Visually resolving the direct Z-scheme heterojunction in CdS@ZnIn2S4 hollow cubes for photocatalytic evolution of H2 and H2O2 from pure water

Zhang, Erhuan; Zhu, Qianhong; Huang, Jianfeng; Liu, Jia; Tan, Guoqiang; Sun, Chengjun; Li, Tao; Liu, Shan; Li, Yuemei; Wang, Hongzhi; Wan, Xiaohua; Wen, Zhenhai; Fan, Fengtao; Zhang, Jiatao; Ariga, Katsuhiko

doi:10.1016/j.apcatb.2021.120213

Cited by 129 publications

(63 citation statements)

References 60 publications

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“…For the heterojunction systems, the spatially resolved surface photovoltage spectroscopy could further give the visualized demonstration on the direct Z ‐scheme mechanism of CdS@ZnIn 2 S 4 particle under dark and illumination (λ = 450 nm) conditions, respectively. [ 135 ] All of these illustrate the great practicality of the SPV technology, especially in the solar‐related fields when coupled with other advanced characterizations.…”

Section: Qualitative and Quantitative Characterizations For Ief Deter...mentioning

confidence: 99%

“…[ 118,131–134 ] The noteworthy merit of the SPV technology is that it could be equipped with or installed into various setups such as the KPFM and STM setup, achieving the ability to study electron dynamics with high time and spatial resolution. [ 84,135 ] When it is equipped with a contactless Kelvin probe, the CPD value could be easily obtained and when it is installed into the KPFM setup, it can also reach spatial resolution, abbreviated as SSPV. For example, through spatially resolved surface photovoltage spectroscopy, pure single‐domain PbTiO 3 crystal was verified to possess both upward band bending and downward band bending on the measured {001} facet on the opposite side due to the affirmed polarization direction along <001> axis, which is responsible for the formed IEF.…”

Section: Qualitative and Quantitative Characterizations For Ief Deter...mentioning

confidence: 99%

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Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Yue

Fan

Xiang

2021

Adv Funct Materials

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Energy‐related problems induced by ever‐continuous fossil consumption have arisen as one of the most challenging issues in the 21st century, imposing urgent demands on advanced materials to achieve high energy utilization and a sustainable society. In various solar energy utilization and solar‐to‐fuel energy conversion processes, charge carriers are the main and inevitable participators, and the charge dynamics related to their generation, migration, separation, and utilization is the key to advance the material design for settling the above issues. Internal electric field (IEF), also named as built‐in electric field, could guide directional migration of charge carriers, achieving effective charge separation, utilization, and prolonged lifetimes. This critical review begins with the discussion on various modulation strategies toward the IEF together with in‐detail elucidated mechanisms on its formation. Some cascade systems for telling the conclusive role from the induced IEF and the intrinsic design strategy are discussed. Then, a summary of the state‐of‐the‐art advances in the characterization means toward the IEF from both quantitative and qualitative perspectives is provided. Finally presented are IEF modulations in several specific energy‐related applications concerning solar cell, photocatalysis, photodetectors, and batteries to better understand its superiority for well‐performed material design, followed by perspectives on future development and opportunities of the IEF design.

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Section: Qualitative and Quantitative Characterizations For Ief Deter...mentioning

confidence: 99%

Section: Qualitative and Quantitative Characterizations For Ief Deter...mentioning

confidence: 99%

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Yue

Fan

Xiang

2021

Adv Funct Materials

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“…[34] Zhang et al successfully obtained CdS@ZnIn 2 S 4 hollow cubes, of which light harvesting ability has been improved. [35] Although these inspiring achievements have been made, there are still many critical issues about optimization of photocatalytic performance of ZnIn 2 S 4 . First, it is a natural consideration to combine the element doping and morphology engineering together because these two methods can promote the photocatalytic activity of photocatalysts from different aspects.…”

Section: Introductionmentioning

confidence: 99%

Bifunctional Cobalt‐Doped ZnIn₂S₄ Hierarchical Nanotubes Endow Noble‐Metal Cocatalyst‐Free Photocatalytic H₂ Production Coupled with Benzyl Alcohol Oxidation

et al. 2022

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Noble metals are widely used as cocatalysts to enhance the performance of photocatalysts, while large‐scale applications of noble metals are restricted due to their scarcity and high cost. In this context, it is an urgent task to design efficient noble‐metal cocatalyst‐free photocatalysts. Herein, the rational design and self‐sacrificial template‐assisted synthesis of cobalt‐doped ZnIn2S4 hierarchical nanotubes (Co‐ZIS HNTs) are presented that can act as a bifunctional photocatalyst for H2 evolution and benzaldehyde production. Comprehensive experimental results indicate that the Co‐ZIS HNTs can lead to the enhanced separation and transfer efficiency of photoinduced carriers. As a result, the Co‐ZIS HNTs exhibit a 1.93 times higher H2 evolution rate than undoped ZnIn2S4 microspheres (ZIS MSs) without any cocatalysts. Impressively, the Co‐ZIS HNTs show remarkable bifunctial photocatalytic activity toward both H2 evolution and benzyl alcohol oxidation. The extraordinary production rates of H2 and benzaldehyde are 2823.7 and 2769.0 μmol h−1 g−1, which are 7.44 and 7.60 times higher than that of bare ZIS MSs under visible light, respectively. This work not only proposes a promising strategy to devise highly active cocatalyst‐free photocatalysts, but also illustrates the potential for H2 evolution coupled with add‐valued products.

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“…discovered that in triethanolamine aqueous solution, the 2D/2D heterogeneous interface created by Ni 1‐x Co x Se−C and ZIS displayed increased hydrogen evolution reaction activity [22] . Furthermore, the CdS@ZIS hollow cubes with Z‐scheme heterojunction had been shown to have excellent charge separation efficiency [23] . However, the hydrogen evolution performance of heterojunction semiconductor photocatalysts still needs to be improved.…”

Section: Introductionmentioning

confidence: 99%

“…[22] Furthermore, the CdS@ZIS hollow cubes with Z-scheme heterojunction had been shown to have excellent charge separation efficiency. [23] However, the hydrogen evolution performance of heterojunction semiconductor photocatalysts still needs to be improved. Based on the above considerations, we put forward the thought of coupling ZIS with ZnS and CNTs to set up a composite photocatalyst for efficient evolution of hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Fast Interlayer Charge Separation and Transmission in ZnIn₂S₄/CNTs/ZnS Heterojunctions for Efficient Photocatalytic Hydrogen Evolution

et al. 2022

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The construction of close contact heterojunction structures is crucial to modify photocatalytic performance. Here a series of heterojunction ZnIn 2 S 4 /CNTs/ZnS nanocomposites for photocatalytic hydrogen evolution were synthesized by a simple thermal reflux approach. The ideal ZnIn 2 S 4 /CNTs/ZnS sample has a photocatalytic hydrogen evolution rate of 0.9363 mmol • g À 1 • h À 1 with favorable cycle stability, which is about 16.9 and 5.5 times that of pure ZnIn 2 S 4 and binary ZnIn 2 S 4 /ZnS. The tight interfacial contact between ZnIn 2 S 4 , ZnS, and CNTs raises photogenerated charge carrier separation efficiency. CNTs have a high electrical conductivity, which allows them to receive and transport photogenerated electrons effectively. Therefore, the recombination of photon-generated charges may be efficaciously restrained, and the accepted electrons can be rapidly transported to reactive sites for production of hydrogen. Simultaneously, density functional theory (DFT) simulations show that introducing CNTs can enhance electronic characteristics and add additional charge carriers. This study shows that well-designed CNTs-based heterojunction structure can effectively promote charge separation in photocatalysis.

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Visually resolving the direct Z-scheme heterojunction in CdS@ZnIn2S4 hollow cubes for photocatalytic evolution of H2 and H2O2 from pure water

Cited by 129 publications

References 60 publications

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Bifunctional Cobalt‐Doped ZnIn₂S₄ Hierarchical Nanotubes Endow Noble‐Metal Cocatalyst‐Free Photocatalytic H₂ Production Coupled with Benzyl Alcohol Oxidation

Fast Interlayer Charge Separation and Transmission in ZnIn₂S₄/CNTs/ZnS Heterojunctions for Efficient Photocatalytic Hydrogen Evolution

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Visually resolving the direct Z-scheme heterojunction in CdS@ZnIn2S4 hollow cubes for photocatalytic evolution of H2 and H2O2 from pure water

Cited by 129 publications

References 60 publications

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Bifunctional Cobalt‐Doped ZnIn2S4 Hierarchical Nanotubes Endow Noble‐Metal Cocatalyst‐Free Photocatalytic H2 Production Coupled with Benzyl Alcohol Oxidation

Fast Interlayer Charge Separation and Transmission in ZnIn2S4/CNTs/ZnS Heterojunctions for Efficient Photocatalytic Hydrogen Evolution

Contact Info

Product

Resources

About

Bifunctional Cobalt‐Doped ZnIn₂S₄ Hierarchical Nanotubes Endow Noble‐Metal Cocatalyst‐Free Photocatalytic H₂ Production Coupled with Benzyl Alcohol Oxidation

Fast Interlayer Charge Separation and Transmission in ZnIn₂S₄/CNTs/ZnS Heterojunctions for Efficient Photocatalytic Hydrogen Evolution