Simultaneously tailor band structure and accelerate charge separation by constructing novel In(OH)3-TiO2 heterojunction for enhanced photocatalytic water reduction

Du, Xinjuan; Hu, Jindou; Xie, Jing; Hao, Aize; Lu, Zhenjiang; Cao, Yali

doi:10.1016/j.apsusc.2022.153305

Cited by 7 publications

(2 citation statements)

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“…In(OH) 3 -TiO 2 heterostructures were also formed for enhanced photocatalytic H 2 evolution. The band-gap tuning and improved charge separation resulted in up to a >15-fold increase in activity compared to commercial P25 [ 167 ].…”

Section: Tio 2 Photocatalysismentioning

confidence: 99%

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

Querebillo

2023

Nanomaterials

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Catalysis on TiO2 nanomaterials in the presence of H2O and oxygen plays a crucial role in the advancement of many different fields, such as clean energy technologies, catalysis, disinfection, and bioimplants. Photocatalysis on TiO2 nanomaterials is well-established and has advanced in the last decades in terms of the understanding of its underlying principles and improvement of its efficiency. Meanwhile, the increasing complexity of modern scientific challenges in disinfection and bioimplants requires a profound mechanistic understanding of both residual and dark catalysis. Here, an overview of the progress made in TiO2 catalysis is given both in the presence and absence of light. It begins with the mechanisms involving reactive oxygen species (ROS) in TiO2 photocatalysis. This is followed by improvements in their photocatalytic efficiency due to their nanomorphology and states by enhancing charge separation and increasing light harvesting. A subsection on black TiO2 nanomaterials and their interesting properties and physics is also included. Progress in residual catalysis and dark catalysis on TiO2 are then presented. Safety, microbicidal effect, and studies on Ti-oxides for bioimplants are also presented. Finally, conclusions and future perspectives in light of disinfection and bioimplant application are given.

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Section: Tio 2 Photocatalysismentioning

confidence: 99%

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

Querebillo

2023

Nanomaterials

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“…The value of n depends on the optical transition type of the semiconductor, while n = 4 and 1 correspond to indirect and direct transitions, respectively. TiO 2 belongs to direct transition semiconductors. − The E g values of TiO 2 , Cu-TiO 2 , and Cu/In-TiO 2 were calculated to be 3.290, 3.285, and 3.269 eV, respectively (Figure b). It is noted that the dual-single-atom-doping Cu and In have no significant impact on the band structures and light absorptions, indicating that the preeminent photocatalytic performance of Cu/In-TiO 2 is not mainly attributed to the improved light adsorption but may mainly originate from charge carriers separation with Cu/In dual-doping.…”

Section: Resultsmentioning

confidence: 99%

Solvent-Free Synthesis of Cu/In Dual-Single-Atom-Doped TiO₂ for Photocatalytic Reduction of Cr (VI) with High Efficiency

Ren,

Tao,

Luo

et al. 2024

ACS Appl. Eng. Mater.

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Recently, photocatalysts with single-atom doping have been highly focused on modulating charge separation and maximizing the reaction active sites that result in efficiency maximization. In this work, Cu and In dual-single-atomdoped mesoporous nano TiO 2 (Cu/In-TiO 2 ) with high crystallinity was prepared through a facile solvent-free self-assembly method by grinding and heating raw materials. The performances of the prepared catalysts were evaluated via photocatalytic reduction of Cr (VI). The results show that both single-atom doping and dual-single-atom doping can improve the photocatalytic activity of TiO 2 significantly, but Cu/In dual-single-atom doping is better than that of single-atom (Cu or In) doping alone, and Cu single-atom doping is better than that of In singleatom doping. The Cu/In-TiO 2 exhibited outstanding photocatalytic activity for the reduction of Cr (VI). Its photocatalytic reduction efficiency is 6.87 times higher than that of pure TiO 2 . More interestingly, its photocatalytic activity is better than that of benchmark reagents of P25 and previously reported similar photocatalysts. The much-improved performance can be mainly ascribed to the Cu and In dual-single-atom doping on TiO 2 , which promote the separation and transfer of the charge carriers and decrease the recombination rate of the charge carriers. This work provides an efficient catalyst for the photocatalytic reduction of Cr (VI) and a simple-effective strategy for the synthesis of highly efficient mesoporous metal oxide nanophotocatalysts and facilitates their applications.

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Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

Yu,

Luan,

Xiao

et al. 2024

Applied Catalysis B: Environment and Energy

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Simultaneously tailor band structure and accelerate charge separation by constructing novel In(OH)3-TiO2 heterojunction for enhanced photocatalytic water reduction

Cited by 7 publications

References 49 publications

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

Solvent-Free Synthesis of Cu/In Dual-Single-Atom-Doped TiO₂ for Photocatalytic Reduction of Cr (VI) with High Efficiency

Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

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Simultaneously tailor band structure and accelerate charge separation by constructing novel In(OH)3-TiO2 heterojunction for enhanced photocatalytic water reduction

Cited by 7 publications

References 49 publications

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

A Review on Nano Ti-Based Oxides for Dark and Photocatalysis: From Photoinduced Processes to Bioimplant Applications

Solvent-Free Synthesis of Cu/In Dual-Single-Atom-Doped TiO2 for Photocatalytic Reduction of Cr (VI) with High Efficiency

Gemstone nanoflower-shaped ZnIn2S4/CuS heterojunction with ultralong lifetime of photoinduced carriers for photocatalytic hydrogen evolution

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Solvent-Free Synthesis of Cu/In Dual-Single-Atom-Doped TiO₂ for Photocatalytic Reduction of Cr (VI) with High Efficiency