Hollow structured PtNix alloy as cocatalyst of CdS for hydrogen generation under visible light irradiation |
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| Affiliation: | 1. Henan Engineering Research Center of Resource & Energy Recovery from Waste, Henan University, Kaifeng, 475004, PR China;2. Institute of Functional Polymer Composites, Henan University, Kaifeng, 475004, PR China;1. College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, 350007, China;2. Fuqing Branch of Fujian Normal University, Fuqing, Fujian, 350300, China;3. Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fuzhou, 350007, China;1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, PR China;2. Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, PR China;1. Tomsk Polytechnic University, Lenin Av. 30, Tomsk, 634050, Russia;2. Tomsk State University of Control Systems and Radioelectronics, Lenin Av. 36, Tomsk, 634050, Russia;3. SUAL-PM, Yuzhnaya Str. 2, Shelekhov, 666034, Irkutsk Region, Russia;1. State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, PR China;2. Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Enviroment, Anhui Agricultural University, 130 Changjiang West Road, Hefei, Anhui, 230036, PR China |
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| Abstract: | PtNix hollow nanoparticles (HNPs) as a cocatalyst was synthesized by a galvanic replacement method at room temperature, and then was loaded on CdS. The hollow structure of PtNix alloy was confirmed by TEM and STEM. Photocatalytic hydrogen production reaction was performed for PtNix/CdS catalyst under 300 W Xe lamp (λ ≥ 420 nm). It is noteworthy that PtNi0.5/CdS shows the highest hydrogen evolution activity of 2.9 mmol/h with QE = 51.24% at 420 nm, which is higher than that of situ-photodeposited Pt onto CdS (0.57 mmol/h). The enhancement of hydrogen evolution performance of PtNi0.5/CdS could be attributed to the porous shell and hollow structure of PtNi0.5 NPs, as well as the strong electronic coupling effect between Pt and Ni. Besides, the sheet structure of CdS in some degree promoted the hydrogen production rate. Therefore, the PtNix HNPs could be a promising cocatalyst of CdS for solar driven hydrogen evolution. |
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| Keywords: | Photocatalyst CdS Hydrogen generation |
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