Lead-free perovskite Cs2AgBiBr6@g-C3N4 Z-scheme system for improving CH4 production in photocatalytic CO2 reduction

Wang, Yingying; Huang, Hanlin; Zhang, Zhenzhen; Wang, Cong; Yang, Yuying; Li, Qi; Xu, Dongsheng

doi:10.1016/j.apcatb.2020.119570

Cited by 232 publications

(133 citation statements)

References 60 publications

Supporting

Mentioning

130

Contrasting

Order By: Relevance

“…Accordingly, both of the CBM and VBM of g‐C 3 N 4 are designed lower than those of halide perovskite 72,74 . If a direct Z‐scheme heterojunction is built, to ensure high photocatalytic activity, the electrons generated on the perovskite should be recombined with the holes generated on the g‐C 3 N 4 , leaving the electrons on the g‐C 3 N 4 and holes on the halide perovskite for catalytic reactions 87 . Xu and coworkers fabricated a nanocomposite of CsPbBr 3 QDs and NH x ‐rich porous g‐C 3 N 4 nanosheets via a facile self‐assembly method, 74 in which the formed unique NBr bond could facilitate charge separation between the two materials and thus prolong the lifetime of photogenerated charge carriers.…”

Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

“…More importantly, when decreasing the CO 2 concentration to 11%, the CsPbBr 3 @g‐C 3 N 4 could still photocatalytically reduce CO 2 to CO and CH 4 at a rate of 7.1 and 1.7 μmol g −1 hour −1 (Figure 3D). Recently, Xu and coworkers constructed a Z‐scheme lead‐free halide perovskite heterojunction comprising of Cs 2 AgBiBr 6 and g‐C 3 N 4 through an in‐situ self‐assembly strategy 87 . The photocatalytic activities for CO 2 reduction were evaluated in a solution of ethyl acetate with methanol as the sacrificial agent under simulated sunlight.…”

Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

See 1 more Smart Citation

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

View full text Add to dashboard Cite

Halide perovskites have attracted increasing scientific interests for photocatalysis because of their remarkable opto‐electronic properties, such as optimal band structures, long charge carrier lifetimes, high photoluminescence quantum yields, and so on. However, pure halide perovskites generally face problems of low stability, lack of active sites, and ineffective extraction of carriers, which limit their applications in photocatalytic reactions. To improve the photocatalytic activity and stability, halide perovskites are composited with other materials. Herein in this mini review, we summarize the recent progresses on the design and development of halide perovskite composites for various photocatalytic reactions including photocatalytic CO2 reduction reaction, photocatalytic hydrogen evolution reaction, photocatalytic pollutant degradation reaction, and so on. Finally, an outlook of halide perovskite for photocatalysis is provided to point up the future challenges and the possible solutions.

show abstract

Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

View full text Add to dashboard Cite

show abstract

“…Recently, a Cs 2 AgBiBr 6 @g‐C 3 N 4 Z‐scheme system in toluene was found to exhibit superior CH 4 production in photocatalytic CO 2 reduction. [ 217 ] The heterojunction between Cs 2 AgBiBr 6 and g‐C 3 N 4 enhanced both the oxidative and the reductive ability, resulting in highly selective conversion.…”

Section: Applications Of Hdpsmentioning

confidence: 99%

Lead‐Free Halide Double Perovskites: Structure, Luminescence, and Applications

Zeng

2020

Small Structures

View full text Add to dashboard Cite

Organic–inorganic halide perovskites have attracted extensive attention due to their excellent optoelectronic properties. However, the toxicity of heavy atom Pb2+ and instability overshadow further commercial applications, motivating researchers to explore alternative analogues to overcome these disadvantages. Lead‐free halide double perovskites (HDPs), sharing similar crystal structures with organic–inorganic halide perovskites, are promising candidates for optoelectronic applications. However, HDPs possess unique properties that are uncommon in organic–inorganic halide perovskites deriving from feasible component engineering and strong electron–phonon interaction. Bright luminescence in HDPs originates from self‐trapped excitons (STEs) and sensitized dopants can cover the full visible and near‐infrared ray (NIR) gamut by modulating parity‐forbidden transitions and the energy‐transfer process. The superior optoelectronic characteristics of HDPs further extend applications on self‐assembly, white‐light phosphors, NIR bioimaging, and scintillators, in comparison to organic–inorganic halide perovskites. Herein, the structural diversity, tunable luminescence, photophysical mechanism of STEs, charge‐carrier dynamics, size effect, and stability issues of HDPs are discussed. The challenges and outlook for further investigations are also given, which may help in discovering new analogues and boosting the photoluminescence quantum yield and stability of HDPs.

show abstract

“…[ 21,22 ] Accordingly, multifarious lead‐free halide perovskites have been exploited and used as catalysts in the field of photocatalysis. [ 23–34 ] Among these lead‐free perovskites, bismuth‐based halide perovskites have received increasing attention owing to their low toxicity and high stability compared with LHPs. In particular, all‐inorganic cesium bismuth halide (Cs 3 Bi 2 X 9 , X = Br or I) perovskite nanocrystals have been actively exploited as photocatalysts for CO 2 reduction, [ 28 ] H 2 evolution, [ 32 ] organic synthesis, [ 25 ] and organic pollutant degradation.…”

Section: Introductionmentioning

confidence: 99%

In Situ Construction of Lead‐Free Perovskite Direct Z‐Scheme Heterojunction Cs₃Bi₂I₉/Bi₂WO₆ for Efficient Photocatalysis of CO₂ Reduction

Liu

et al. 2021

Solar RRL

View full text Add to dashboard Cite

The well‐known toxicity of lead‐halide‐perovskite (LHP) nanocrystals limits their commercial applications in photocatalysis. Herein, an in situ controlled growth strategy is reported for lead‐free perovskite nanocrystals (Cs3Bi2I9) on the surface of ultrathin Bi2WO6 nanosheets through co‐sharing Bi atoms, to generate a direct Z‐scheme heterojunction of Cs3Bi2I9/Bi2WO6. Co‐sharing of the Bi atom can enable intimate contact and strong electron coupling between Cs3Bi2I9 and Bi2WO6, which can effectively promote the interfacial charge transfer between Cs3Bi2I9 and Bi2WO6 complying with a Z‐scheme pathway. The resulting efficient charge transfer and well‐preserved redox ability of Cs3Bi2I9/Bi2WO6 heterojunction endow it with a significant improvement of photocatalytic activity for the conversion of CO2‐to‐CO integrated with water oxidation, exhibiting a fourfold increase compared with pure Cs3Bi2I9 nanocrystals. This study paves a new avenue for the construction of efficient Z‐scheme heterojunction based on lead‐free halide perovskite, which should stimulate further passion on the development of high performance of lead‐free halide perovskite materials for photocatalytic application.

show abstract

Lead-free perovskite Cs2AgBiBr6@g-C3N4 Z-scheme system for improving CH4 production in photocatalytic CO2 reduction

Cited by 232 publications

References 60 publications

Halide perovskite composites for photocatalysis: A mini review

Halide perovskite composites for photocatalysis: A mini review

Lead‐Free Halide Double Perovskites: Structure, Luminescence, and Applications

In Situ Construction of Lead‐Free Perovskite Direct Z‐Scheme Heterojunction Cs₃Bi₂I₉/Bi₂WO₆ for Efficient Photocatalysis of CO₂ Reduction

Contact Info

Product

Resources

About

Lead-free perovskite Cs2AgBiBr6@g-C3N4 Z-scheme system for improving CH4 production in photocatalytic CO2 reduction

Cited by 232 publications

References 60 publications

Halide perovskite composites for photocatalysis: A mini review

Halide perovskite composites for photocatalysis: A mini review

Lead‐Free Halide Double Perovskites: Structure, Luminescence, and Applications

In Situ Construction of Lead‐Free Perovskite Direct Z‐Scheme Heterojunction Cs3Bi2I9/Bi2WO6 for Efficient Photocatalysis of CO2 Reduction

Contact Info

Product

Resources

About

In Situ Construction of Lead‐Free Perovskite Direct Z‐Scheme Heterojunction Cs₃Bi₂I₉/Bi₂WO₆ for Efficient Photocatalysis of CO₂ Reduction