Simultaneous Realization of Direct Photoinduced Deposition and Improved H<sub>2</sub>-Evolution Performance of Sn-Nanoparticle-Modified TiO<sub>2</sub> Photocatalyst

Gao, Duoduo; Wu, Xinhe; Wang, Ping; Xu, Ying; Yu, Huogen; Yu, Jiaguo

doi:10.1021/acssuschemeng.9b01516

Cited by 93 publications

(45 citation statements)

References 64 publications

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“…Titania has a number of advantages as a photocatalyst such as: environmentally friendly, inexpensive, and good physical/chemical properties . However, its bandgap is too large to absorb visible light and poor surface reactive sites limit its utilization for photocatalysis.…”

Section: Vacancy Engineeringmentioning

confidence: 99%

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

350

252

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Photocatalytic CO2 reduction is an effective means to generate renewable energy. It involves redox reactions, reduction of CO2 and oxidation of water, that leads to the production of solar fuel. Significant research effort has therefore been made to develop inexpensive and practically sustainable semiconductor‐based photocatalysts. The exploration of atomic‐level active sites on the surface of semiconductors can result in an improved understanding of the mechanism of CO2 photoreduction. This can be applied to the design and synthesis of efficient photocatalysts. In this review, atomic‐level reactive sites are classified into four types: vacancies, single atoms, surface functional groups, and frustrated Lewis pairs (FLPs). These different photocatalytic reactive sites are shown to have varied affinity to reactants, intermediates, and products. This changes pathways for CO2 reduction and significantly impacts catalytic activity and selectivity. The design of a photocatalyst from an atomic‐level perspective can therefore be used to maximize atomic utilization efficiency and lead to a high selectivity. The prospects for fabrication of effective photocatalysts based on an in‐depth understanding are highlighted.

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Section: Vacancy Engineeringmentioning

confidence: 99%

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

350

252

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“…A photodeposition technique was also applied by Gao et al . 30 to prepare Sn/TiO 2 photocatalysts with considerably enhanced performance in H 2 generation compared to that of the titanium dioxide base catalyst.…”

Section: Introductionmentioning

confidence: 99%

Degradation and mineralization of 4-tert-butylphenol in water using Fe-doped TiO2 catalysts

Makhatova

Ulykbanova

Sadyk

et al. 2019

Sci Rep

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In the present work, the photocatalytic degradation and mineralization of 4-tert-butylphenol in water was studied using Fe-doped TiO2 nanoparticles under UV light irradiation. Fe-doped TiO2 catalysts (0.5, 1, 2 and 4 wt.%) were prepared using wet impregnation and characterized via SEM/EDS, XRD, XRF and TEM, while their photocatalytic activity and stability was attended via total organic carbon, 4-tert-butyl phenol, acetic acid, formic acid and leached iron concentrations measurements. The effect of H2O2 addition was also examined. The 4% Fe/TiO2 demonstrated the highest photocatalytic efficiency in terms of total organic carbon removal (86%). The application of UV/H2O2 resulted in 31% total organic carbon removal and 100% 4-t-butylphenol conversion, however combining Fe/TiO2 catalysts with H2O2 under UV irradiation did not improve the photocatalytic performance. Increasing the content of iron on the catalyst from 0.5 to 4% considerably decreased the intermediates formed and increased the production of carbon dioxide. The photocatalytic degradation of 4-tert-butylphenol followed pseudo-second order kinetics. Leaching of iron was observed mainly in the case of 4% Fe/TiO2, but it was considered negligible taking into account the iron load on catalysts. The electric energy per order was found in the range of 28–147 kWh/m3/order and increased with increasing the iron content of the catalyst.

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“…Hydrogen carries a high chemical potential energy, which can be converted to electricity or momentum while reacting with oxygen and produce water as a by‐product . While currently most hydrogen is generated by steam reforming, a much greener way would be the photocatalytic splitting of water or other suitable H 2 sources on an illuminated semiconductor …”

Section: Introductionmentioning

confidence: 99%

Photocatalytic H₂ Evolution: Dealloying as Efficient Tool for the Fabrication of Rh‐decorated TiO₂ Nanotubes

et al. 2019

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In this work, we report on a facile and novel method for decorating titanium dioxide (TiO 2 ) nanotubes with Rh nanoparticle-nanonetworks that act as co-catalysts in photocatalytic H 2 generation. In a first step, a TiÀ Rh (0.2 at%) alloy is etched in Kroll's solution leading to a dealloyed surface decorated with a Rh nanoparticle-network of adjustable geometry and loading. By subsequent anodization of the alloy samples, Rh:TiO 2 nanotubes can be grown where the tube mouths are strongly decorated with the Rh nanoparticle network (RhNw). As evident from X-ray photoelectron spectroscopy (XPS) analysis, these Rh oxide Nws are converted to metallic Rh under UV irradiation. As a result, with time a steady increase of the H 2 evolution from the RhNw decorated TiO 2 nanotubes is observed. Nanotubes carrying RhNw yield in photocatalytic experiments a 5-times higher H 2 evolution activity in comparison with nanotubes decorated by conventional Rh-sputtering (the same loading), and show a 228 times higher activity than pristine TiO 2 nanotubes.

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Simultaneous Realization of Direct Photoinduced Deposition and Improved H₂-Evolution Performance of Sn-Nanoparticle-Modified TiO₂ Photocatalyst

Cited by 93 publications

References 64 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Degradation and mineralization of 4-tert-butylphenol in water using Fe-doped TiO2 catalysts

Photocatalytic H₂ Evolution: Dealloying as Efficient Tool for the Fabrication of Rh‐decorated TiO₂ Nanotubes

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Simultaneous Realization of Direct Photoinduced Deposition and Improved H2-Evolution Performance of Sn-Nanoparticle-Modified TiO2 Photocatalyst

Cited by 93 publications

References 64 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Degradation and mineralization of 4-tert-butylphenol in water using Fe-doped TiO2 catalysts

Photocatalytic H2 Evolution: Dealloying as Efficient Tool for the Fabrication of Rh‐decorated TiO2 Nanotubes

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Product

Resources

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Simultaneous Realization of Direct Photoinduced Deposition and Improved H₂-Evolution Performance of Sn-Nanoparticle-Modified TiO₂ Photocatalyst

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Photocatalytic H₂ Evolution: Dealloying as Efficient Tool for the Fabrication of Rh‐decorated TiO₂ Nanotubes