Amino Acid-Assisted Preparation of Homogeneous PbS/CsPbBr<sub>3</sub> Nanocomposites for Enhanced Photoelectrocatalytic CO<sub>2</sub> Reduction

Wu, Xudong; Xu, Ruijie; Li, Xianli; Zeng, Ruosheng; Luo, Binbin

doi:10.1021/acs.jpcc.2c05413

Cited by 8 publications

(9 citation statements)

References 43 publications

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“…[3,4] As an emerging candidate photocatalyst, perovskite nanocrystals (PNCs) have attracted enormous Recently, the PNC-chalcogenide heterojunctions, like CsPbBr 3 / CdS core/shell, CsPbBr 3 -PbS, CsPbBr 3 -CdSe, and CsPbBr 3 -PbSe, have been developed for photocatalysis. [26][27][28][29] However, the direct growth of PNCs on metal chalcogenide have not yet been well-established.…”

Section: Introductionmentioning

confidence: 99%

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

Wang

Zhang

et al. 2023

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Perovskite nanocrystals (PNCs) are promising candidates for solar‐to‐fuel conversions yet exhibit low photocatalytic activities mainly due to serious recombination of photogenerated charge carriers. Constructing heterojunction is regarded as an effective method to promote the separation of charge carriers in PNCs. However, the low interfacial quality and non‐directional charge transfer in heterojunction lead to low charge transfer efficiency. Herein, a CsPbBr3–CdZnS heterojunction is designed and prepared via an in situ hot‐injection method for photocatalytic CO2 reduction. It is found that the high‐quality interface in heterojunction and anisotropic charge transfer of CdZnS nanorods (NRs) enable efficient spatial separation of charge carriers in CsPbBr3–CdZnS heterojunction. The CsPbBr3–CdZnS heterojunction achieves a higher CO yield (55.8 µmol g−1 h−1) than that of the pristine CsPbBr3 NCs (13.9 µmol g−1 h−1). Furthermore, spectroscopic experiments and density functional theory (DFT) simulations further confirm that the suppressed recombination of charge carriers and lowered energy barrier for CO2 reduction contribute to the improved photocatalytic activity of the CsPbBr3–CdZnS heterojunction. This work demonstrates a valid method to construct high‐quality heterojunction with directional charge transfer for photocatalytic CO2 reduction. This study is expected to pave a new avenue to design perovskite–chalcogenide heterojunction.

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Section: Introductionmentioning

confidence: 99%

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

Wang

Zhang

et al. 2023

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“…Benefiting from the excellent photoelectric properties, lead halide perovskite nanocrystals (PNCs) have achieved great success on applications such as LEDs, lasers, photodetectors, and photocatalysis. − By adopting hot-injection (HI) and ligand-assisted reprecipitation (LARP) methods, , PNCs exhibit near-unity photoluminescence (PL) quantum yield (QY) with tunable emission spanning the whole visible range. Despite the easy preparation and optical regulation, the ionic nature and fragile colloidal stability greatly hamper the synthesis of high quality PNCs.…”

Section: Introductionmentioning

confidence: 99%

Weakening Ligand–Liquid Affinity to Suppress the Desorption of Surface-Passivated Ligands from Perovskite Nanocrystals

Zheng

Lian

et al. 2022

Langmuir

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The interfacial migration of surface-bound ligands highly affects the colloidal stability and optical quality of semiconductor nanocrystals, of which the underlying mechanism is not fully understood. Herein, colloidal CsPbBr3 perovskite nanocrystals (PNCs) with fragile dynamic equilibrium of ligands are taken as the examples to reveal the important role of balancing ligand-solid/solvent affinity in suppressing the desorption of ligands. As a micellar surfactant, glycyrrhizic acid (GA) with bulky hydrophobic and hydrophilic groups exhibits a relatively smaller diffusion coefficient (∼440 μm2/s in methanol) and weaker ligand–liquid affinity than that of conventional alkyl amine and carboxy ligands. Consequently, hydrophilic GA-passivated PNCs (PNCs-GA) show excellent colloidal stability in various polar solvents with dielectric constant ranging from 2.2 to 32.6 and efficient photoluminescence with a quantum yield of 85.3%. Due to the suppressed desorption of GA, the morphological and optical properties of PNCs-GA are well maintained after five rounds purification and two months long-term storage. At last, hydrophilic PNCs-GA are successfully patterned through inkjet- and screen-printing technology. These findings offer deep insights into the interfacial chemistry of colloidal NCs and provide a universal strategy for preparing high-quality hydrophilic PNCs.

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“…[ 20,21 ] Therefore, it is worth noting that material design plays an important role in PEC CO 2 reduction reactions. In this regard, there has been intensive investigation within the PEC and photocatalytic materials, including metal oxides, [ 22,23 ] chalcogenides, [ 21,24 ] carbon‐based materials, [ 25,26 ] metal complexes, [ 27,28 ] perovskites, [ 29 ] MXenes, [ 30 ] and so on for the transformation of CO 2 into chemical fuels. However, single metal oxide materials such as TiO 2 , WO 3 , Bi 2 O 3 , and so on possess low light absorption ability in the visible region, poor charge separation, and insufficient active sites on the surface of the catalyst, leading to low PEC performance.…”

Section: Introductionmentioning

confidence: 99%

Elemental‐Doped Catalysts for Photoelectrochemical CO₂ Conversion to Solar Fuels

Hiragond,

Kim,

Kim

et al. 2024

Solar RRL

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Solar‐driven photoelectrochemical (PEC) CO2 conversion to valuable chemicals, combining the advantages of photocatalysis and electrocatalysis, represents a promising approach towards establishing a carbon‐neutral society and harnessing solar energy. Photoelectrode materials doped with metals and/or non‐metals have shown promise in achieving high CO2 reduction efficiency. Metal or non‐metal doping entails introducing a heteroelement into the semiconductor, thereby modifying the band potentials of the semiconductor through the addition of a defective state. This alteration may improve the charge transfer kinetics of the catalysis. Furthermore, doping aids in creating active CO2 adsorption offers anchoring sites for CO2 molecules, and can promote product selectivity. This review aims to provide a concise summary of elemental‐doped photoelectrodes for converting CO2 into fuels through photoelectrochemical processes. We discuss several key factors affecting the performance of PEC CO2 reduction, including the interaction of reactants with catalysts, reaction conditions, and the impact of the photoelectrode. Moreover, we discussed various PEC CO2 reduction systems, with a specific focus on enhancing the efficiency of CO2 reduction. Finally, we provide a summary of key considering aspects for further development of the PEC CO2 reduction.This article is protected by copyright. All rights reserved.

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Amino Acid-Assisted Preparation of Homogeneous PbS/CsPbBr₃ Nanocomposites for Enhanced Photoelectrocatalytic CO₂ Reduction

Cited by 8 publications

References 43 publications

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

Weakening Ligand–Liquid Affinity to Suppress the Desorption of Surface-Passivated Ligands from Perovskite Nanocrystals

Elemental‐Doped Catalysts for Photoelectrochemical CO₂ Conversion to Solar Fuels

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Amino Acid-Assisted Preparation of Homogeneous PbS/CsPbBr3 Nanocomposites for Enhanced Photoelectrocatalytic CO2 Reduction

Cited by 8 publications

References 43 publications

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO2 Reduction

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO2 Reduction

Weakening Ligand–Liquid Affinity to Suppress the Desorption of Surface-Passivated Ligands from Perovskite Nanocrystals

Elemental‐Doped Catalysts for Photoelectrochemical CO2 Conversion to Solar Fuels

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Amino Acid-Assisted Preparation of Homogeneous PbS/CsPbBr₃ Nanocomposites for Enhanced Photoelectrocatalytic CO₂ Reduction

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

In Situ Constructed Perovskite–Chalcogenide Heterojunction for Photocatalytic CO₂ Reduction

Elemental‐Doped Catalysts for Photoelectrochemical CO₂ Conversion to Solar Fuels