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Hydrogen 1

MOF heterojunctions 1

Narrow bandgap 1

Tantalum-based photocatalyst 1

TiO₂ nanotube arrays and nanoparticles 1

Water splitting 1

anodization 1

bandgap 1

bandgap modification 1

layer-by-layer deposition 1

materials derived from MOFs 1

metal–organic frameworks (MOFs) 1

oil-water separation 1

photocatalytic hydrogen evolution 1

recombination 1

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Tantalum (Oxy)Nitride: Narrow Bandgap Photocatalysts for Solar Hydrogen Generation Review

Mu Xiao, Songcan Wang, Supphasin Thaweesak, Bin Luo, Lianzhou Wang

Engineering 2017, Volume 3, Issue 3, Pages 365-378 doi: 10.1016/J.ENG.2017.03.019

Abstract: This paper also proposes future trends to explore in the research area of tantalum-based narrow bandgap

Keywords： Tantalum-based photocatalyst Narrow bandgap Water splitting Hydrogen

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Fabrication, modification and environmental applications of TiO

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

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1, Pages 112-122 doi: 10.1007/s11705-011-1144-6

Abstract: 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.

Keywords： TiO₂ nanotube arrays and nanoparticles anodization bandgap modification layer-by-layer deposition

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

Luis A. ALFONSO-HERRERA, Leticia M. TORRES-MARTINEZ, J. Manuel MORA-HERNANDEZ

Frontiers in Energy 2022, Volume 16, Issue 5, Pages 734-746 doi: 10.1007/s11708-022-0840-x

Abstract: 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.

Keywords： frameworks (MOFs) photocatalytic hydrogen evolution MOF heterojunctions materials derived from MOFs bandgap