| Download | - View author's version: Air- and water-stable halide perovskite nanocrystals protected with nearly-monolayer carbon nitride for CO₂ photoreduction and water splitting (PDF, 3.5 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/j.apsusc.2022.153276 |
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| Author | Search for: Laishram, Devika; Search for: Zeng, Sheng; Search for: Alam, Kazi M.1; Search for: Kalra, Aarat P.; Search for: Cui, Kai1; Search for: Kumar, Pawan; Search for: Sharma, Rakesh K.; Search for: Shankar, Karthik |
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| Affiliation | - National Research Council Canada. Nanotechnology
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| Funder | Search for: Science and Engineering Research Board; Search for: Alberta Ministry of Advanced Education; Search for: CFREF; Search for: National Research Council of Canada. National Institute for Nanotechnology; Search for: Natural Sciences and Engineering Research Council of Canada; Search for: Canada Foundation for Innovation |
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| Format | Text, Article |
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| Subject | solar fuels; inorganic lead halide perovskite; scanning Kelvin probe force microscopy; n-n heterojunction; isotope labeled mass spectrometry |
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| Abstract | Halide perovskites are exciting candidates for broad-spectrum photocatalysts but have the problem of ambient stability. Protective shells of oxides and polymers around halide perovskite nano- and micro-crystals provide a measure of chemical and photochemical resilience but the photocatalytic performance of perovskites is compromised due to low electron mobility in amorphous oxide or polymer shells and rapid charge carrier recombination on the surface. Herein an in situ surface passivation and stabilization of CsPbBr₃ nanocrystals was achieved using monolayered graphenic carbon nitride (CNM). Extensive characterization of carbon nitride protected CsPbBr₃ nanocrystals (CNMBr) indicated spherical CsPbBr3 nanoparticles encased in a few nm thick g-C₃N₄ sheets facilitating better charge separation via percolation/tunneling of charges on conductive 2D nanosheets. The CNMBr core-shell nanocrystals demonstrated enhanced photoelectrochemical water splitting performance and photocurrent reaching up to 1.55 mA cm⁻². The CNMBr catalyst was successfully deployed for CO₂ photoreduction giving carbon monoxide and methane as the reaction products. |
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| Publication date | 2022-04-04 |
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| Publisher | Elsevier |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Identifier | S0169433222008327 |
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| NRC number | NRC-NANO-174 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | c811c4a7-ce66-4b0e-8be6-3d7fcd88a873 |
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| Record created | 2023-02-03 |
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| Record modified | 2025-11-03 |
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