共查询到20条相似文献,搜索用时 31 毫秒
1.
Y. S. Montenegro Camacho S. Bensaid G. Piras M. Antonini D. Fino 《Clean Technologies and Environmental Policy》2017,19(5):1437-1447
The development and deployment of energy mix hydrogen production technologies, and the prospect of supplying “green” hydrogen to fuel-cell cars are expected to play significant roles in the near future. The sustainability of the process is a key enabler for a hydrogen-including economy. A techno-economic analysis of the BioRobur technology, which involves the green hydrogen production of 100 N m3 H2/h (5.0 grade), has been performed in this study to provide a basis for comparison between the final cost of the hydrogen and the European target. Moreover, a technology for its eventual implementation has been addressed, in which the weakness and strengths have been identified by means of a SWOT analysis. The cost and supply analysis of this biogas-to-hydrogen production system, via autothermal reforming, indicates that municipal solid waste (MSW) is an important source of the low-cost supply of biogas-derived hydrogen. As far as the market potential is concerned, this analysis suggests that MSW can provide about 286,607 kg/day at 5 €/kg H2 (delivery cost). Additionally, after 10 years of amortization, the final cost to produce 100 N m3/h of H2 would be 2.5 €/kg, which is far lower than the European target for the cost of obtaining H2 through biogas reforming, that is, 5 €/kg of H2. 相似文献
2.
S. Sharma B. Patil A. Pathak S. Ghosalkar H. K. Mohanta B. Roy 《Clean Technologies and Environmental Policy》2018,20(4):695-701
Catalytic activity of cobalt-doped bismuth vanadate [Bi4(V0.90Co0.10)2O11?δ ; BICOVOX] powder, prepared by a solution combustion synthesis and calcined at 800 °C (BICOVOX-800), for hydrogen production using low-temperature steam reforming of ethanol, has been reported in this paper. The effects of reaction temperature (250–400 °C) and feed concentration (H2O/EtOH = 2.5:1 and 23:1 mol ratio) on the steady-state ethanol conversion and selectivity of H2, CO2, CO, and CH4 have been investigated (up to 30 h). It is observed that with an increase in reaction temperature and H2O/EtOH mole ratio, H2 and CO2 selectivity increases and CO and CH4 selectivity decreases. The maximum H2 selectivity and ethanol conversion are observed to be 63 and 88%, respectively, for H2O/EtOH = 23:1 mol ratio at 400 °C. The XRD results show that the fresh BICOVOX-800 has pure γ-phase and is highly crystalline. The used catalyst (more than 150 h total) is detected to have less crystallinity and to partially decompose into Bi2O3 and BiVO4 phases. 相似文献
3.
Jeong Won Ko 《Fullerenes, Nanotubes and Carbon Nanostructures》2017,25(12):710-715
The seed solution was prepared by dissolving hydrogen tetrachloroaurate(III) trihydrate (HAuCl4·3H2O), trisodium citrate dihydrate (C6H5Na3O7·2H2O), and sodium borohydride (NaBH4) in distilled water. The resulting reddish-purple seed solution was stirred for 3 h at room temperature. The growth solution was prepared by mixing hydrogen tetrachloroaurate(III) trihydrate (HAuCl4·3H2O), cetyltrimethylammonium bromide (CTAB, (C16H33)N(CH3)3Br), silver nitrate (AgNO3), hydrochloric acid (HCl), and ascorbic acid (C6H8O6) in distilled water. Subsequently, 100 μL of this seed solution was transferred into 10 mL of the growth solution. The mixed solution was maintained at 30 °C for 3 h to obtain a solution of bipyramidal gold nanoparticles. The bipyramidal gold nanoparticle-[C60] fullerene nanowhisker composites were synthesized by applying the liquid-liquid interfacial precipitation (LLIP) method to a saturated solution of C60 in toluene, the solution of bipyramidal gold nanoparticles, and isopropyl alcohol. The prepared bipyramidal gold nanoparticle-[C60] fullerene nanowhisker composites were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. The catalytic activity of these composites was confirmed in the reduction of 4-nitrophenol by UV-Vis spectroscopy. 相似文献
4.
An economical and feasible route was used to synthesize the fly ash-based mesoporous CdS/Al-MCM-41 nanocomposites via an alkali fusion step to extract of the silicon and aluminum sources from fly ash, and a templating step to assemble nanocomposites at room temperature. The low angle X-ray diffraction and high resolution transmission electron microscopy results indicated that the mesoporous Al-MCM-41 was formed with average pore size of about 3.0 nm and the CdS clusters were assembled in the channels of Al-MCM-41. The results of ultraviolet–visible (Vis) diffuse reflectance spectra and the fluorescence emission spectra revealed that the nanocomposites show a strong absorption edge at 521 nm and a weak photoluminescence peak at 398 nm. The activities of hydrogen production were evaluated by photocatalytic water-splitting under Vis light irradiation, and the CdS/Al-MCM-41 nanocomposites showed the highest H2 evolution in amount of 3.3 mL/g during the reaction time for 6 h due to the synergistic effect between CdS clusters and mesoporous Al-MCM-41 matrix. A mechanism of photocatalytic H2 production was proposed. 相似文献
5.
Xiancong He Honglie Shen Wei Wang Baosen Zhang Yuming Dai Yubao Lu 《Journal of Materials Science: Materials in Electronics》2013,24(2):572-575
Cu2ZnSnS4 (CZTS) films are successfully prepared on Mo substrate by electrochemical epitaxial method. An electrolyte contains 0.124 M CuSO4·5H2O, 0.14 M ZnSO4, 0.13 M SnCl2·2H2O, 0.16 M Na2S2O3·5H2O, 2.25 M NaOH, 1.36 M C6H5Na3O7, 1.00 M C4H6O6. The equilibrium potential for quaternary co-electrodeposited solution is set at ?1.1 ~ ?1.20 V. The results show that elements are deposited in the following sequence: Cu/S/Zn/S/Cu/S/Sn/S…. The ternary and quaternary compounds are formed with the increasing temperature during annealing. Finally the CZTS film can be well formed at 550 °C. The resistivity of CZTS is about 5.6 × 104 Ω cm. 相似文献
6.
Bruno Carlesso Aita Flávio Dias Mayer Diana Tomazi Muratt Michel Brondani Stefen Barbosa Pujol Laura Bedin Denardi Ronaldo Hoffmann Djalma Dias da Silveira 《Clean Technologies and Environmental Policy》2016,18(3):689-703
Biogas has limited use in energy generation mainly due to the presence of hydrogen sulfide (H2S). Currently, most of the techniques employed in the removal of H2S from biogas have a chemical base, with high material costs and generating secondary pollutants. Biological processes for H2S removal have become effective and economical alternative techniques to traditional gas-treatment systems based on physicochemical techniques. Therefore, the aim of this work was to investigate the performance of a bench-scale biofilter for the removal of H2S present in synthetic biogas. In addition, CO2 and CH4 concentrations in the outlet biogas were evaluated. The inoculum used in the experiment was composed of Acidithiobacillus thiooxidans fixed on a packing of wood chips. Synthetic biogas was supplied to the system with a composition of 60 % CH4, 39 % CO2 and 1 % H2S. The biofilter operated continuously for 37 days with an average H2S removal efficiency of 75 ± 13 % and maximum of 97 %. The elimination capacity of the system reached an average of 130 ± 23 g m?3 h?1 and a maximum of 169 g m3 h?1. The biofiltration system showed an average reduction of only 6 % in CH4 concentration from biogas. Thus, besides being efficient in the removal of H2S, the system was able to maintain the biogas energy value. 相似文献
7.
Wonwoo Jeong Cui-Lei Yin Kwan San Hui Kwun Nam Hui Young Rae Cho Kyung Mox Cho 《Journal of Materials Science: Materials in Electronics》2017,28(22):16672-16678
Crystalline Co3O4 nanowire arrays with different morphologies grown on Ni foam were investigated by varying the reaction temperature, the concentration of precursors, and reaction time. The Co3O4 nanowires synthesized under typical reaction condition had a diameter range of approximately 500–900 nm with a length of 17 µm. Electrochemical reduction of hydrogen peroxide (H2O2) of the optimized Co3O4 nanowire electrode was studied by cyclic voltammetry. A high current density of 101.8 mA cm?2 was obtained at ?0.4 V in a solution of 0.4 M H2O2 and 3.0 M NaOH at room temperature compared to 85.8 mA cm?2 at ?0.35 V of the Co3O4 nanoparticle electrode. Results clearly indicated that the Ni foam supported Co3O4 nanowire electrode exhibited superior catalytic activity and mass transport kinetics for H2O2 electrochemical reduction. 相似文献
8.
J. J?rvinen V. V. Khmelenko D. M. Lee J. Ahokas S. Vasiliev 《Journal of Low Temperature Physics》2011,162(3-4):96-104
We describe experiments on hydrogen atoms stabilized in a 100 ??m thick H2 film at temperatures between 0.05 and 2 K. The molecular hydrogen matrix was condensed directly from natural hydrogen gas. The H atoms are produced with a plasma discharge at temperatures below 1 K and studied with electron spin resonance. H densities of 2×1019 cm?3 in solid H2 were reached. As observed earlier in thin H2 films, we found a high stability of atomic populations and strong deviation from Boltzmann statistics of lowest two hyperfine states at the lowest temperatures. In thick films we found that the ESR resonance lines consisted of two closely spaced components with different widths indicating separate regions of high and low concentrations of H atoms in the H2 matrix. Upon warming, the two components show very different rates of recombination with the higher density component having a faster recombination rate at T>1 K. We discuss the atomic interactions and mobility, and also the structure of the samples of H atoms in the H2 matrix. 相似文献
9.
Dumitru Cebrucean Viorica Cebrucean Ioana Ionel Hartmut Spliethoff 《Clean Technologies and Environmental Policy》2017,19(2):451-470
In this paper, the performances of two iron-based syngas-fueled chemical looping (SCL) systems for hydrogen (H2) and electricity production, with carbon dioxide (CO2) capture, using different reactor configurations were evaluated and compared. The first investigated system was based on a moving bed reactor configuration (SCL-MB) while the second used a fluidized bed reactor configuration (SCL-FB). Two modes of operation of the SCL systems were considered, namely, the H2 production mode, when H2 was the desired product from the system, and the combustion mode, when only electricity was produced. The SCL systems were modeled and simulated using Aspen Plus software. The results showed that the SCL system based on a moving bed reactor configuration is more efficient than the looping system with a fluidized bed reactor configuration. The H2 production efficiency of the SCL-MB system was 11 % points higher than that achieved in the SCL-FB system (55.1 % compared to 44.0 %). When configured to produce only electricity, the net electrical efficiency of the SCL-MB system was 1.4 % points higher than that of the SCL-FB system (39.9 % compared to 38.5 %). Further, the results showed that the two chemical looping systems could achieve >99 % carbon capture efficiency and emit ~2 kg CO2/MWh, which is significantly lower than the emission rate of conventional coal gasification-based plants for H2 and/or electricity generation with CO2 capture. 相似文献
10.
Xiran Wang Shizhong Wei Liujie Xu Jiwen Li Xiuqing Li Kangning Shan 《Advanced Powder Technology》2018,29(6):1323-1330
A novel chemical co-precipitation was used to produce W-70%Cu nanocomposite powders with coating structure. The precursors consisting of CuC2O4·xH2O and WO3·2H2O were first synthesized using copper nitrate, ammonium metatungstate(AMT) and oxalic acid as the raw materials at 80?°C for 1.5?h when the concentrations of the reactants were 0.8?mol/L and the hydrogen ion concentration was 1.2?mol/L. The precursors were calcined to produce the powders with different phase components and microstructure at various temperatures. The CuWO4 and CuO nano-powders were obtained at 300?°C, which is colder than the traditional reaction temperature (1000?°C) of CuO?+?WO3 = CuWO4. However, the cubic Cu2O and Cu2WO4 could be formed when the calcining temperature was 600?°C. The hydrogen reduction results show that the calcined powder is reduced to obtain W-Cu composite powder at 750?°C and 800?°C. In reduction process, volatile WO2(OH)2 through chemical vapor transport(CVT) continuously spreads to the copper surface and is reduced to form W and the coated particle is eventually formed. This particle is Cu particle coated by W phase and the interface between W and Cu phases is semi-coherent. It is found that the average particle size of the reduced powder is 30–50?nm observed by TEM images. 相似文献
11.
Shengnan Yan Zhijie Li Hao Li Zhonglin Wu Junqiang Wang Wenzhong Shen Yong Qing Fu 《Journal of Materials Science》2018,53(24):16331-16344
Ultra-sensitive H2S sensors operated at room temperature were fabricated using Ag–In2O3 nanorod composites synthesized using sol–hydrothermal method followed by NaBH4 reduction process. TEM proved that the In2O3 was nanorod structures of?~?110 nm in length and?~?35 nm in diameter. Ag nanoparticles with diameters from 10 to 15 nm homogeneously decorated on the surfaces of the In2O3 naonorods. XRD and XPS analysis proved that the Ag elements existed as zero-valent metallic silver on the surface of the In2O3 nanorods. Ag nanoparticles could enhance the formation of chemisorbed oxygen species and interactions between H2S molecules and oxygen species due to spillover effect, and the electron transfer between Ag and In2O3 nanorods also enhanced the sensing properties. Therefore, the H2S sensors based on the Ag–In2O3 nanorod composites showed significantly improved sensing performance than those based on the pure In2O3 nanorods. The optimized content of Ag nanoparticles is 13.6 wt%. Operated at room temperature, the H2S sensors made of 13.6 wt% Ag–In2O3 nanorod composites exhibited an ultra-high response of 93719 to 20 ppm H2S and a superior detection limit of 0.005 ppm. The sensor also showed good reversibility, good selectivity, excellent reproducibility and stability for detection of H2S gas. 相似文献
12.
P. S. Niphadkar S. K. Chitale S. K. Sonar S. S. Deshpande P. N. Joshi S. V. Awate 《Journal of Materials Science》2014,49(18):6383-6391
TiO2–SiO2 mesoporous composite photocatalysts with different proportions (in wt%) of TiO2 and SiO2 (TiO2–SiO2 = 20:80, 40:60, 60:40, 80:20 and 100:0) were prepared by loading TiO2 on as-synthesized Si–MCM-41 using sol–gel method. The physicochemical properties of composites were investigated by powder X-ray diffraction, N2 adsorption–desorption measurements, transmission electron microscopy and UV–Vis diffuse reflectance spectroscopy. It is revealed that the titanium species are dispersed as TiO2 having interaction with the surface of the support. Even at high TiO2 loading, the mesostructural feature of MCM-41 was found to be intact without pore blockages. The change in morphology of TiO2 particle was observed with increase in TiO2 loading which may be due to different environment for the growth of TiO2. The photocatalytic evaluation of composites was carried out in production of hydrogen by water splitting. Among the prepared samples, mesoporous composite containing 60 % TiO2 (MTi60) has shown the best results (0.08805 mmol of H2/h/g of TiO2) compared to other composite photocatalysts. The catalytic performance of this sample was further enhanced (~8 times) after loading 1 % Pt in water splitting (0.70161 mmol of H2/h/g of TiO2). 1 % Pt loaded on pure TiO2 (MTi100) showed hydrogen evolution of the magnitude 0.26 mmol of H2/h/g of TiO2. TiO2–SiO2 mesoporous composite photocatalyst showed much higher activity (~1.9 times) than amorphous silica-embedded titania catalyst having same composition. 相似文献
13.
T. Prikhna W. Gawalek Y. Savchuk A. Soldatov V. Sokolovsky M. Eisterer H. W. Weber J. Noudem M. Serga V. Turkevich M. Tompsic V. Tkach N. Danilenko W. Goldacker F. Karau I. Fesenko M. Rindfleisch J. Dellith M. Wendt S. You V. Meerovich S. Dub V. Moshchil N. Sergienko A. Kozyrev T. Habisreuther C. Schmidt D. Litzkendorf P. Nagorny V. Sverdun 《Journal of Superconductivity and Novel Magnetism》2011,24(1-2):137-150
The synthesis of MgB2-based materials under high pressure gave the possibility to suppress the evaporation of magnesium and to obtain near theoretically dense nanograined structures with high superconducting, thermal conducting, and mechanical characteristics: critical current densities of 1.8?C1.0×106 A/cm2 in the self-field and 103 A/cm2 in a magnetic field of 8 T at 20 K, 5?C3×105 A/cm2 in self-field at 30 K, the corresponding critical fields being H c2=15 T at 22 K and irreversible fields H irr=13 T at 20 K, and H irr=3.5 T at 30 K, thermal conduction of 53±2 W/(m?K), the Vickers hardness H V =10.12±0.2 GPa under a load of 148.8 N and the fracture toughness K 1C =7.6±2.0 MPa?m0.5 under the same load, the Young modulus E=213 GPa. Estimation of quenching current and AC losses allowed the conclusion that high-pressure-prepared materials are promising for application in transformer-type fault current limiters working at 20?C30 K. 相似文献
14.
Phosphogypsum-based CaSO4·0.5H2O whiskers were successfully prepared in the presence of glycerol by hydrothermal method. The action mechanism of glycerol on the morphology of CaSO4·0.5H2O whiskers was investigated and discussed in detail. The as-prepared products were characterized by X-ray powder diffraction spectrometer, scanning electron microscopy, Fourier transform infrared spectrometer, and thermal analyzer. The main phase of the as-prepared products was CaSO4·0.5H2O, and the morphology was uniform fiber. Moreover, the aspect ratio and productivity of the as-prepared CaSO4·0.5H2O whiskers increased with the concentration of glycerol. Even whiskers with mean length of 38–83 μm, mean width of 1.33–0.73 μm, aspect ratio of 29–118, and productivity of 89–96 % were obtained under the condition of glycerol/water volume ratio of 10–100 %. As far as mechanism was concerned, the hydroxyl groups of glycerol adsorbed and occupied the vacancies of Ca sites on (001) plane of CaSO4·0.5H2O whiskers, and however, on (100) plane, hydroxyl groups of glycerol adsorbed mainly on Ca sites and formed hydrogen bond layered structure on both sides of that, which should be the reason that CaSO4·0.5H2O whiskers grew along the c-axis observed in this study. 相似文献
15.
Qian Jiang Weiyan Wang Yuheng Zeng Wei Xu Jinhua Huang Ti Zhou Weijie Song 《Journal of Materials Science: Materials in Electronics》2014,25(12):5356-5361
In this work, aluminum-doped zinc oxide (AZO)/p-Si heterojunction solar cells were prepared by sputtering of ~120 nm AZO thin films in Ar or Ar–H2 atmosphere on textured p-Si wafers, and the effects of hydrogen incorporation on the solar cell performance were investigated. Results showed that the performance of AZO/p-Si heterojunction solar cells was improved with the increase of hydrogen volume concentration from 0 to 23 %. The AZO:H/p-Si heterojunction solar cells prepared in Ar–23 % H2 exhibited a short-circuit current density of 29 mA/cm2 and a conversion efficiency of 2.84 %. The reflectance measurement indicated that the reflectance of p-Si surface in the range of 400–1,100 nm decreased from 13 to 4 % after AZO:H films coating; and the capacitance–voltage measurement indicated that the density of defect states at AZO/p-Si interface was decreased after hydrogen incorporation. Passivation and antireflection functions can be realized in AZO:H films deposited in Ar–H2, which opens a novel route to prepare cost-effective AZO/p-Si heterojunction solar cells. 相似文献
16.
Najeeb Kaid Nasser Al-Shorgani El-Mubarak Tibin Ehsan Ali Aidil Abdul Hamid Wan Mohtar Wan Yusoff Mohd Sahaid Kalil 《Clean Technologies and Environmental Policy》2014,16(1):11-21
The anaerobic production of biohydrogen from different pretreated agroindustrial wastes, including rice bran (RB), de-oiled RB (DRB), sago starch (SS), and palm oil mill effluent (POME) via Clostridium saccharoperbutylacetonicum N1-4 was investigated in a batch culture system at 30 °C and a pH of 6.2. A yield of 7627, 6995, and 6,363 mL H2/L was obtained from H2SO4 (1 %)-treated DRB (10 %), enzymatically hydrolyzed DRB (10 %) and HCl (1 %)-treated DRB (10 %), respectively; however, untreated DRB (10 %) was able to produce only 3,286 mL H2/L. A strategic treatment of RB (10 %) with HCl (1 %) followed by enzymatic hydrolysis could produce 3,172 mL H2/L. An enzymatically hydrolyzed mixture of each POME and SS (5 %) produced 3,474 mL H2/L, and a remarkable enhancement of H2 production (7,020 mL H2/L) was achieved when the same mixture was subjected to XAD-4 resin treatment. In contrast, the enzymatically hydrolyzed SS (5 %) could produce only 4,628 mL H2/L. Conclusively, it can be stated that agricultural wastes have a potential as substrates for biohydrogen production and that pretreatment with C. saccharoperbutylacetonicum N1-4 can contribute positively to enhancing the production. 相似文献
17.
Liuqing Yang Liyun Cao Jie Fei Haibo Ouyang Cuiyan Li 《Materials at High Temperatures》2013,30(3):283-287
Antioxidant modification for C/C composites by in situ hydrothermal synthesise at 140 °C of a 4ZnO·B2O3·H2O crystallite coating has been successfully achieved. The influence of hydrothermal time on the phase composition, microstructure of the as-prepared Zn4B2O7·H2O (4ZnO·B2O3·H2O), and its antioxidant modification for C/C composites were investigated. Samples were characterised by XRD, SEM, isothermal oxidation test and TG-DSC. Results show that, 4ZnO·B2O3·H2O crystalline coating is achieved on the surface of C/C composites after the hydrothermal treatment at 140 °C for time in the range of 2–12 h. A smooth and crack-free 4ZnO·B2O3·H2O layer can be obtained when the hydrothermal time reaches 8 h. Isothermal oxidation test demonstrates that the oxidation resistance of C/C composites is improved. The as-modified composites exhibit only 1.52 g·cm?2 weight loss after oxidation at 600 °C for 15 h, while the non-modified one shows a 6.57 g·cm?2 weight loss after only 10 h oxidation. For the uncoated C/C composite the oxidation rate is approximately linear with time (non-protective oxidation), thus at 15 h exposure one can estimate the mass loss to be 6.57 g·cm?2 after 10 h for direct comparison with the coated samples. 相似文献
18.
Photocatalytic solar energy conversion to chemical energy attracts great attention due to its high potential in harvesting renewable energy for the future. A ZnS(en)0.5 photocatalyst hybridized with a CdS component was synthesized by solvothermal and precipitation methods to compare the effect of preparation methods on photocatalytic performance. The highest hydrogen production rate (559 μmol g?1 h?1) was achieved from a solvothermally synthesized ZnS(en)0.5?CdS composite at 80 wt% of CdS content under standard 1-sun-irradiation condition (1000 W/m2). Photocatalytic hydrogen production rates from ZnS(en)0.5?CdS photocatalysts were highly associated with degrees of charge separation, crystallinity, reduction power, and light absorption. By comparing two different routes for the synthesis of ZnS(en)0.5?CdS photocatalysts, solvothermally-fabricated material was shown to have a higher photocatalytic activity compared with material fabricated by a precipitation method. This improvement may be due to its excellent crystalline and charge-separation characteristics. 相似文献
19.
Sensitive, convenient and rapid detection of hydrogen peroxide(H_2 O_2) is highly desirable in fields like fundamental biological research, food industries, and clinical environmental analysis. Herein, a hierarchical porous CuO/Cu flower-like active electrode material for non-enzymatic H_2 O_2 sensor was synthesized via a low-cost and one-step chemical oxidation of Cu powder in water bath without surfactants. In order to discuss the growth mechanism of the product, products with different growth time length were fabricated. The electro-catalysis of all products were first exhibited by cyclic-voltammetry,and the product under 6 h reaction shows the best result. The detailed electro-catalytic behaviors of the best product(under 6 h reaction) are characterized by cyclic-voltammetry and amperometry under alkaline conditions. The materials have high sensitivity of 103 μA mM~(-1) cm~(-2)(R~2= 0.9979), low detection limit of 2 μmol/L and wide concentration range(from 2 μmol/L to 19.4 mmol/L). Large specific surface area and stabled nanostructure enabled good features, such as stability and sensitivity for the H_2 O_2 determination. 相似文献
20.
Ilzira Subakova Igor Petukhov Natalia Medvedeva 《Materials and Manufacturing Processes》2015,30(6):766-770
The influence of surfactants and TiO2 sol on mechanical, catalytic, and corrosive properties of electroless Ni–P coatings was investigated. Additives of the surfactants caused the decrease of internal stresses in the Ni–P coatings and smoothing of their surfaces. Incorporation of the TiO2 particles facilitated the rise of microhardness of the Ni–P coatings from 545 ± 11 Hv up to 614 ± 17 Hv. Additives of the surfactants accelerated hydrogen evolution reaction on the composite Ni–P–TiO2 coatings in acid and alkaline media, and increased photocatalytic activity in methylene blue decomposition. Incorporation of the TiO2 particles and application of the surfactants resulted in an improvement in the corrosion resistance of original Ni–P coatings in 0.5 M H2SO4. 相似文献