黏土矿物基无机杂化颜料研究进展

近年来,无机杂化颜料成为无机颜料领域的研究热点之一.黏土矿物是储量丰富、廉价且易得的天然纳米物质,因具有独特的纳米片状、棒状和管状结构,成为构筑各种无机杂化颜料的理想基体材料.介绍了黏土矿物的结构特点,综述了黏土矿物基钴蓝、铋黄、铁红和其他色系杂化颜料的研究和应用进展,展望了黏土矿物基无机杂化颜料的未来发展方向.     

有机无机杂化太阳能电池研究进展

简要介绍了有机无机杂化太阳能电池的结构及原理,以及激子的产生、分离及电荷的传输过程,综述了基于Cd基化合物纳米晶的杂化电池、Pb基化合物纳米晶的杂化电池以及其它半导体纳米晶的杂化电池的研究进展,并指出它们的优缺点和改进有机无机杂化电池性能的研究方向.     

无机纳米相-纳米纤维素杂化纳米材料的研究进展

分别介绍了近年来利用贵金属纳米粒子、无机陶瓷纳米相(包括金属氧化物、金属硫化物、黏土类、纳米羟基磷灰石和纳米碳酸钙)、磁性纳米纤维素、碳纳米相与纳米纤维素进行复合的研究进展,并建议加强对纳米纤维素基杂化材料的基础理论研究,改进现有制备方法并开发出更加节能减耗的新方法,以及更多极具应用前景的无机纳米材料实现优势互补的分子级复合,定向设计合成出适用不同场合、满足不同需求的高性能、多功能新型先进复合材料。     

无机纳米相一纳米纤维素杂化纳米材料的研究进展

分别介绍了近年来利用贵金属纳米粒子、无机陶瓷纳米相（包括金属氧化物、金属硫化物、黏土类、纳米羟基磷灰石和纳米碳酸钙）、磁性纳米纤维素、碳纳米相与纳米纤维素进行复合的研究进展,并建议加强对纳米纤维素基杂化材料的基础理论研究,改进现有制备方法并开发出更加节能减耗的新方法,以及更多极具应用前景的无机纳米材料实现优势互补的分子级复合,定向设计合成出适用不同场合、满足不同需求的高性能、多功能新型先进复合材料。     

颜料、颜料制剂及填料

改性磷酸锌的防腐性能研究;研磨到炭黑颜料中用于分散体、涂料、油墨、塑料和橡胶的烟灰黑;有机无机杂化纳米膜包覆型铝粉颜料及其制备方法与应用     

聚合物/CdS纳米杂化材料的组装与应用

聚合物/无机纳米杂化材料兼具聚合物材料的可加工性和无机纳米材料的功能性与结构特征,已成为目前材料学科的研究热点。综述了聚合物/CdS纳米杂化材料的制备方法、表征手段,并对这种杂化材料的应用做了简要介绍。     

纳米材料用于改性水处理中的有机-无机杂化膜的研究进展

通过将亲水性的纳米粒子加入有机高分子膜的制备中得到的有机-无机杂化膜结合了无机膜和有机膜的优点,成为膜技术领域的研究热点之一。在制膜过程中引入的纳米粒子主要包括ZrO_2、TiO_2、Al2O3、SiO_2、石墨烯等,主要通过3种不同方法:无机纳米颗粒可直接加入铸膜液、复合纳米粒子改性、纳米粒子前驱体改性制备有机-无机杂化膜。从理论与应用两个角度对有机-无机杂化膜在提高物理和化学稳定性、分离性能,膜亲水性以及抗污染性能等方面进行了阐述,归纳了有机-无机杂化膜在水处理领域的应用效果以及最新研究进展,并针对杂化膜研究提出了一些建议。     

纳米材料用于改性水处理中的有机-无机杂化膜的研究进展

通过将亲水性的纳米粒子加入有机高分子膜的制备中得到的有机-无机杂化膜结合了无机膜和有机膜的优点,成为膜技术领域的研究热点之一。在制膜过程中引入的纳米粒子主要包括ZrO_2、TiO_2、Al2O3、SiO_2、石墨烯等,主要通过3种不同方法:无机纳米颗粒可直接加入铸膜液、复合纳米粒子改性、纳米粒子前驱体改性制备有机-无机杂化膜。从理论与应用两个角度对有机-无机杂化膜在提高物理和化学稳定性、分离性能,膜亲水性以及抗污染性能等方面进行了阐述,归纳了有机-无机杂化膜在水处理领域的应用效果以及最新研究进展,并针对杂化膜研究提出了一些建议。     

无机矿物黏土负载纳米零价铁技术研究进展

概述了采用无机矿物黏土负载纳米零价铁的原理.对目前国内外6种重要的负载零价铁的无机矿物黏土材料进行了对比分析,包括蒙脱石、累托石、坡缕石、高岭土、膨润土、沸石,并阐述了其中几种矿物黏土负载纳米铁后的形态以及去除污染物的效果.最后对一些最新的矿物在负载纳米铁的应用创新及其应用前景和发展趋势方面进行了展望.     

Sol-Gel纳米无机/有机复合材料的研究进展及其应用

介绍了无机/有机复合纳米杂化材料的主要制备方法Sol-Gel法和用途,综述了Sol-Gel无机/有机复合纳米杂化材料的研究现状以及其最新进展,展望了无机/有机复合纳米杂化材料的发展趋势。     

黏土矿物的结构特征及其吸附二氧化碳的研究进展

天然黏土矿物资源丰富、成本低廉、具有丰富的孔隙结构和稳定的化学性质,是实现减排和碳循环的一类优良固体吸附剂基体材料。本文概述了黏土矿物适用于CO₂固体吸附剂制备的结构特征,对高岭石、埃洛石、蒙脱石、凹凸棒石、海泡石和蛭石等黏土矿物基CO₂固体吸附剂进行了综述。介绍了其在工业烟气捕集及沼气提纯技术中的应用,最后指出合成吸附容量高、选择性强、吸附温区大、适用于产业化应用的黏土矿物基CO₂固体吸附剂并建立理论吸附模型是今后的研究重点。     

二氧化硅改性铝颜料的研究进展

铝颜料因其优良的性能而在各相关领域获得广泛应用,但防腐蚀性能不佳又使其应用受到极大限制.活性二氧化硅包覆铝颜料能够得到均匀致密的包覆膜,使铝颜料具有良好的耐腐蚀性能,因而逐渐成为研究的热点.介绍了铝颜料的表面性质和二氧化硅包覆铝颜料的方法,如无机二氧化硅包覆和有机-无机杂化包覆,并综述了不同催化剂条件下二氧化硅包覆铝颜...     

Hybrid coating pigments of poly(styrene-co-maleimide)/kaolin/alumina trihydrate for paper coating

Novel organic–inorganic hybrid pigments were prepared by in situ imidization of poly(styrene-co-maleic anhydride) (SMA) aqueous dispersion with ammonia in the presence of inorganic pigments, i.e. kaolin (K) or a mixture of kaolin (K)/alumina trihydrate (ATH). The objective was to allow the organic nano-particles of poly(styrene-co-maleimide) (SMI) to precipitate during their formation onto the surface of the inorganic pigment(s) and to investigate their potential in paper coatings. The produced hybrid pigments were characterized by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFT-FTIR), scanning electron microscopy (SEM), wide-angel X-ray diffraction (WXRD) spectroscopy and their particle sizes were determined by dynamic light scattering technique. By FTIR measurements the formation of maleimide was confirmed and the existence of strong hydrogen bonding between organic and inorganic components could also be detected. Whereas, the SEM images revealed that the surface of silicate layers had successfully been to a large extent covered by the organic nano-particles to give raise to novel hybrid particles. In addition, the particle size measurements support the observation that the organic nanoparticles for the most part had been chemically or physically attached to the larger inorganic particles. Thus, this in situ imidization process in the presence of clay particles provides a neat method of dispersing the formed nanoparticles onto the inorganic surface through hydrogen bonding. The produced hybrids were applied as auxiliary pigments in paper coating where they improved gloss without roughening the paper surface.     

Changes in state of combination of inorganic constituents during carbonization of Victorian brown coal

The inorganic constituents of low-rank Victorian brown coal, which are mainly present as inherent inorganic combinations attached to the coal molecule, are different from the minerals present in higher-rank coals. Changes in the state of combination of the inorganics in the chars of these coals have been studied by determining the minerals formed when chars are prepared at various temperatures. It is shown that when brown coals containing inorganic carboxylates are carbonized, the reactive functional groups which are present will begin to decompose below 400 °C and their decomposition is completed by 600 °C. The inorganic elements released will form mineral combinations depending on the carbonizing temperature and the reduction potential of the metal. Sodium carbonate, calcium oxide, magnesium oxide (periclase) and iron oxide (magnetite) are usually the chief minerals that may be formed. Mineral constituents present in the original coal may also change during carbonization. As the temperature increases, hydrated oxides of iron, clay and aluminium will lose water of crystallization and become dehydrated, forming magnetite, dried clay and alumina. Pyrite will lose up to half its sulphur at 400–450 °C. If the carbonization temperature is over 600 °C, metallic iron may be formed from the magnetite, and sodium chloride (and later sodium carbonate) will volatilize. Quartz remains unaltered.     

The catalytic power of inorganic components in the abiotic synthesis of hydroquinone-derived humic polymers

The catalytic power of 14 inorganic materials, namely, 4 synthetic short-range ordered oxides, 4 CBD-treated clay minerals, and 6 primary minerals in the abiotic synthesis of humic acids (HA) through the oxidative polymerization of hydroquinone was investigated. The promoting effect of Mn oxide is much higher than that of short-range ordered oxides of Fe, Al and Si. The accelerating effects of montmorillonite and tephroite are highest among the respective mineral groups studied. Among all inorganic materials studied, the catalytic power of tephroite (Mn₂SiO₄) and especially Mn oxide is most striking. The Mn oxide and tephroite rapidly convert hydroquinone to HA and the IR spectra of these synthesized HA are similar to those of soil HA. Compared to the clay minerals, the transition metal-bearing primary minerals have a stronger promoting effect on the synthesis of hydroquinone-derived HA.The data obtained indicate the sequence of the catalytic power of selected short-range ordered oxides, clay minerals, and primary minerals in the formation of hydroquinone-derived HA. The powerful promoting effects of the Mn oxide and tephroite on the synthesis of HA strongly indicate that Mn-bearing oxides and silicates deserve close attention in the formation of humic substances.     

粘土矿物的药理作用及其医药应用

粘土矿物因有大的比表面积,丰富的孔隙率,良好的吸附性能,较高的吸附容量和离子交换能力等,已作为很多药物的活性成分和药物辅料,被广泛用于胃、肠道疾病,急慢性腹泻,皮肤病及风湿病的治疗。随着人们对粘土矿物性能和治病机理研究的深入,粘土矿物作为天然无毒副作用药物材料的研究越来越受到重视。通过近年来国内外粘土药物研究报道及实验室的研究成果,综合介绍粘土矿物的特点、性能、药理作用及其临床应用,预测粘土矿物在医药、化妆品领域中的应用前景。     

矿物基化学吸附储热技术的研究进展

化学吸附储热技术近年来在太阳能利用和中低温余热领域得到了广泛关注,与传统的显热储热和相变储热技术相比具有储热密度高、储热损失小、可实现冷热双储等优点,然而其传质传热问题和液解问题导致的吸附性能和循环稳定性能的降低限制了其规模化应用。本文综述了利用矿物基多孔结构材料对化学吸附材料进行封装的方法以解决上述问题,总结了近年来石墨、蛭石等不同矿物基化学吸附储热材料的特点及其在化学吸附系统中的应用,主要介绍了矿物基化学吸附材料的两种体系（无机盐-水体系和氯盐-氨体系）的传质传热、化学吸附热等性能,并进一步指出了矿物基化学吸附储热技术未来的发展趋势,提出开发新型矿物基复合材料和优化化学吸附系统是未来的研究热点。     

Effect of the layer charge of clay minerals on optical properties of organic dyes. A review

Interactions between clay minerals and cationic organic dyes cause significant changes in the optical, spectral and chemical properties of the chromophores. These changes are due to the formation of supramolecular assemblies of dye cations, called molecular aggregates. Numerous experiments indicate that dye molecular aggregation is sensitively controlled by the layer charge of a clay mineral. Interpretations are based on a detailed analysis of papers investigating reactions of dyes with clay minerals but also considering the reactions with other inorganic solid materials and templates. Older papers dealing with the subject and alternative interpretations of the phenomenon are analysed and critically reviewed. Significance for clay science, material sciences, nanotechnology and potential industrial applications are discussed.     

蒙脱石制备插层复合材料的研究进展

蒙脱石是一种具有离子交换性的层状硅酸盐粘土矿物,利用其结构特性可以制备插层复合材料。这种通过插层反应得到的复合材料兼有无机主体和客体分子的性质,从而表现出不同于单一组分所具有的催化、吸附以及光、电、磁等性能,在构筑下一代的光学、光电纳米器件,化学或生物传感器,分子识别以及催化等领域存在潜在应用的价值。     

无机层柱粘土矿物材料的制备、表征及应用最新进展

简要说明了无机层状柱撑粘土矿物材料的概念和形成过程,总结了柱撑粘土矿物材料的制备和表征方法.举例详细论证了无机层状柱撑粘土矿物材料的最新研究进展及其广泛应用.指出了目前研究存在的不足,展望了无机层状柱撑粘土矿物材料的研究发展方向及广阔的应用前景.