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分解水 1

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钽基氮氧化物——窄带隙光催化剂用于太阳能制氢 Review

肖慕, 王松灿, Thaweesak Supphasin, 罗彬, 王连洲

《工程（英文）》 2017年第3卷第3期页码 365-378 doi: 10.1016/J.ENG.2017.03.019

摘要：

光催化分解水可以将太阳能直接转化为氢能，是一种有效利用太阳能的途径。开发用于太阳能制氢的高效且稳定的光催化剂是光催化研究领域的重要目标之一。钽基氮氧化物具有窄的带隙宽度，并且光生电子和空穴的势能足够用来分解水，因此该类光催化剂最有可能实现太阳能制氢。到目前为止，全世界的研究小组对钽基氮氧化物光催化剂进行了系统而深入的研究，取得了大量的成果。然而，钽基氮氧化物的太阳能制氢效率还远远低于理论值。如何更好地设计这些材料进而提高其太阳能制氢效率这一命题是十分重要和有意义的。本文总结了钽基氮氧化物用于光催化制氢的研究和发展过程，着重分析了用于提高光催化分解水效率的各种方法。最后，探讨了窄带隙钽基氮氧化物光催化分解水研究领域的未来发展趋势。

关键词：钽基光催化剂窄带隙分解水氢

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Novel strategies to tailor the photocatalytic activity of metal–organic frameworks for hydrogen generation: a mini-review

《能源前沿（英文）》页码 734-746 doi: 10.1007/s11708-022-0840-x

摘要： This review provides a recompilation of the most important and recent strategies employed to increase the efficiency of metal–organic framework (MOF)-based systems toward the photocatalytic hydrogen evolution (PHE) reaction through specific strategies: tailoring the photocatalytic activity of bare MOFs and guest@MOF composites, formation of heterojunctions based on MOFs and various photocatalysts, and inorganic photocatalysts derived from MOFs. According to the data reported in this mini-review, the most effective strategy to improve the PHE of MOFs relies on modifying the linkers with new secondary building units (SBUs). Although several reviews have investigated the photocatalytic activity of MOFs from a general point of view, many of these studies relate this activity to the physicochemical and catalytic properties of MOFs. However, they did not consider the interactions between the components of the photocatalytic material. This study highlights the effects of strength of the supramolecular interactions on the photocatalytic performance of bare and MOF-based materials during PHE. A thorough review and comparison of the results established that metal–nanoparticle@MOF composites have weak van der Waals forces between components, whereas heterostructures only interact with MOFs at the surface of bare materials. Regarding material derivatives from MOFs, we found that pyrolysis destroyed some beneficial properties of MOFs for PHE. Thus, we conclude that adding SBUs to organic linkers is the most efficient strategy to perform the PHE because the SBUs added to the MOFs promote synergy between the two materials through strong coordination bonds.

关键词： metal–organic frameworks (MOFs) photocatalytic hydrogen evolution MOF heterojunctions materials derived from MOFs bandgap recombination

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Fabrication, modification and environmental applications of TiO

S. ROHANI, T. ISIMJAN, A. MOHAMED, H. KAZEMIAN, M. SALEM, T. WANG

《化学科学与工程前沿（英文）》 2012年第6卷第1期页码 112-122 doi: 10.1007/s11705-011-1144-6

摘要： Among the semiconductors, titanium dioxide has been identified as an effective photocatalyst due to its abundance, low cost, stability, and superior electronic energy band structure. Highly ordered nanotube arrays of titania were produced by anodization and mild sonication. The band gap energy of the titania nanotube arrays was reduced to 2.6 eV by co-doping with Fe, C, N atoms using an electrolyte solution containing K Fe(CN) . The photoconversion of phenol in a batch photoreactor increased to more than 18% based on the initial concentration of phenol by using a composite nanomaterial consisting of titania nanotube arrays and Pt/ZIF-8 nanoparticles. A layer-by-layer assembly technique for the deposition of titania nanoparticles was developed to fabricate air filters for the degradation of trace amounts of toluene in the air and preparation of superhyrophobic surfaces for oil-water separation and anti-corrosion surfaces.

关键词： TiO₂ nanotube arrays and nanoparticles anodization bandgap modification layer-by-layer deposition oil-water separation