Heterojunction construction on covalent organic frameworks for visible-light-driven H2O2 evolution in ambient air

Xia, Guanglu; Qiu, Jianhao; Zhang, Lu; Dai, Dingliang; Yao, Jianfeng

doi:10.1016/j.colsurfa.2023.131124

“…It resulted in high H 2 O 2 production rate, 2443 μmol g À 1 h À 1 , about 3.3-and 8.7-fold higher than ZnO nanoparticles and TpPa-Cl, respectively. After that, some other COFs hybrids (see Table 1, entries 34-37), such as TiO 2 /COFs, [62] ZnIn 2 S 4 /COFs, [63] CsPbBr 3 /CTF, [64] and TpPaCl 2 /BiOBr, [65] are successively designed to yield high photocatalytic efficiency. This strategy paves a new route to the rational design of COFs photocatalysts and adds variety to the choice of COFs in H 2 O 2 production.…”

Section: Cofs Nanohybridsmentioning

confidence: 99%

“…However, few papers are reported on COFs hybrids. [35,[62][63][64][65][66] Therefore, it's urgent to develop COFs hybrids and introduce more active sites for efficient H 2 O 2 production. Also, the reaction pathway has a significant influence on H 2 O 2 production yield.…”

Section: Perspective and Outlookmentioning

confidence: 99%

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Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Yong,

Ma

2023

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Benefiting from the excellent structural tunability, robust framework, ultrahigh porosity, and rich active sites, covalent organic frameworks (COFs) are widely recognized as promising photocatalysts in chemical conversions, and emerged in the hydrogen peroxide (H2O2) photosynthesis from 2020. H2O2, serving as an environmental‐friendly oxidant and a promising liquid fuel, has attracted increasing researchers to explore its potential. Over the past few years, numerous COFs‐based photocatalysts are developed with encouraging achievements in H2O2 production, whereas no comprehensive review articles exist to summarize this specific and significant area. Herein we provide a systematic overview of the advances and challenges of COFs in photocatalytic H2O2 production. We first introduce the priorities of COFs in H2O2 photosynthesis. Then, various strategies to improve COFs photocatalytic efficiency are discussed. The perspective and outlook for future advances of COFs in this emerging field are finally offered. This timely review will pave the way for the development of highly efficient COFs photocatalysts for practical production of value‐added chemical not limited to H2O2.

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“…Also, due to the porous structure of COFs, it's the perfect platform to introduce co‐catalysts as extra catalytic sites. However, few papers are reported on COFs hybrids [35,62–66] . Therefore, it's urgent to develop COFs hybrids and introduce more active sites for efficient H 2 O 2 production.…”

Section: Perspective and Outlookmentioning

confidence: 99%

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Yong,

Ma

2023

View full text Add to dashboard Cite

Benefiting from the excellent structural tunability, robust framework, ultrahigh porosity, and rich active sites, covalent organic frameworks (COFs) are widely recognized as promising photocatalysts in chemical conversions, and emerged in the hydrogen peroxide (H2O2) photosynthesis from 2020. H2O2, serving as an environmental‐friendly oxidant and a promising liquid fuel, has attracted increasing researchers to explore its potential. Over the past few years, numerous COFs‐based photocatalysts are developed with encouraging achievements in H2O2 production, whereas no comprehensive review articles exist to summarize this specific and significant area. Herein we provide a systematic overview of the advances and challenges of COFs in photocatalytic H2O2 production. We first introduce the priorities of COFs in H2O2 photosynthesis. Then, various strategies to improve COFs photocatalytic efficiency are discussed. The perspective and outlook for future advances of COFs in this emerging field are finally offered. This timely review will pave the way for the development of highly efficient COFs photocatalysts for practical production of value‐added chemical not limited to H2O2.

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“…Photocatalytic hydrogen peroxide production (PHP) has attracted much attention owing to its green, facile, and sustainable process. Apart from the recently explored photocatalysts such as g-C 3 N 4 , , BiVO 4 , WO 3 , and covalent organic frameworks (COFs), ZnIn 2 S 4 (ZIS) has also been proven to be a potential candidate for PHP. − Nevertheless, the sluggish charge carriers still limit the PHP performance of pristine ZnIn 2 S 4 . Therefore, it is imperative to explore strategies to enhance carrier separation as much as possible.…”

Section: Introductionmentioning

confidence: 99%

Intercalation- and Vacancy-Enhanced Internal Electric Fields in ZnIn₂S₄ for Highly Efficient Photocatalytic H₂O₂ Production

Ouyang,

Quan,

Chen

et al. 2023

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Defect engineering and intercalation modification are feasible strategies to enhance the internal electric field (IEF), which is an effective way for steering photogenerated charge kinetics. Herein, ethylene glycol (EG) and Zn vacancy (V Zn ) are successfully introduced into the intra-and interlayers of ZnIn 2 S 4 , respectively, based on the two-dimensional layered structure characteristic of ZnIn 2 S 4 and the special coordination effect between ethylene glycol and Zn 2+ . Comprehensive experimental analysis and theoretical calculations demonstrate that the synergistic effect of EG intercalation and V Zn not only increases the dipole moment inside the unit cell resulting in the enhancement of IEF but also facilitates the kinetics of the 2e − oxygen reduction reaction. Consequently, ZnIn 2 S 4 modified by EG intercalation and V Zn achieves the desired photocatalytic H 2 O 2 production capability (1145.6 μmol/g/h), which is about 4 times that of pristine ZnIn 2 S 4 (294.4 μmol/g/h). This work provides a reference for enhancing the IEF of ZnIn 2 S 4 through intercalation strategies and defect engineering to improve its photocatalytic performance.

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Heterojunction construction on covalent organic frameworks for visible-light-driven H2O2 evolution in ambient air

Cited by 19 publications

References 37 publications

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Intercalation- and Vacancy-Enhanced Internal Electric Fields in ZnIn₂S₄ for Highly Efficient Photocatalytic H₂O₂ Production

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Heterojunction construction on covalent organic frameworks for visible-light-driven H2O2 evolution in ambient air

Cited by 19 publications

References 37 publications

Solar‐to‐H2O2 Catalyzed by Covalent Organic Frameworks

Solar‐to‐H2O2 Catalyzed by Covalent Organic Frameworks

Solar‐to‐H2O2 Catalyzed by Covalent Organic Frameworks

Intercalation- and Vacancy-Enhanced Internal Electric Fields in ZnIn2S4 for Highly Efficient Photocatalytic H2O2 Production

Contact Info

Product

Resources

About

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Solar‐to‐H₂O₂ Catalyzed by Covalent Organic Frameworks

Intercalation- and Vacancy-Enhanced Internal Electric Fields in ZnIn₂S₄ for Highly Efficient Photocatalytic H₂O₂ Production