Hybrid Organic–Inorganic Materials and Composites for Photoelectrochemical Water Splitting

Singh, Simrjit; Chen, Hongjun; Shahrokhi, Shamim; Wang, Luyuan Paul; Lin, Chun‐Ho; Hu, Long; Guan, Xinwei; Xu, Zhichuan J.; Wu, Tom

doi:10.1021/acsenergylett.0c00327

Cited by 124 publications

(79 citation statements)

References 79 publications

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“…Photocatalytic hydrogen evolution reaction offers a simple and cost‐effective approach for large‐scale hydrogen production 98 . Recently halide perovskites have triggered enormous interests in the scientific community for photocatalytic hydrogen evolution 99 . The first application of an organic‐inorganic perovskite to photocatalytically produce hydrogen was performed in a saturated organic‐inorganic perovskite solution of HI 68 .…”

Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

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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.

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Section: Photocatalytic Applications Of Halide Perovskite Compositesmentioning

confidence: 99%

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

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“…Heterostructured catalysts facilitate the adsorption of reaction intermediates because of the strong electronic interactions at the interfaces and the synergistic effects of diverse components, resulting in enhanced activity and improved stability. 34,176,177 The integration of catalysts with suitable conductive substrates could further improve the catalytic performance owing to the optimal exposure of active sites and rapid electron transfer. For example, Feng et al studied the Cu nanodots (Cu NDs) embedded Ni 3 S 2 nanotubes fabricated through a chemical reduction approach.…”

Section: Heterostructurementioning

confidence: 99%

Design and operando/in situ characterization of precious‐metal‐free electrocatalysts for alkaline water splitting

et al. 2020

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Electrochemical water splitting has attracted considerable attention for the production of hydrogen fuel by using renewable energy resources. However, the sluggish reaction kinetics make it essential to explore precious-metal-free electrocatalysts with superior activity and long-term stability. Tremendous efforts have been made in exploring electrocatalysts to reduce the energy barriers and improve catalytic efficiency. This review summarizes different categories of precious-metal-free electrocatalysts developed in the past 5 years for alkaline water splitting. The design strategies for optimizing the electronic and geometric structures of electrocatalysts with enhanced catalytic performance are discussed, including composition modulation, defect engineering, and structural engineering. Particularly, the advancement of operando/in situ characterization techniques toward the understanding of structural evolution, reaction intermediates, and active sites during the water splitting process are summarized. Finally, current challenges and future perspectives toward achieving efficient catalyst systems for industrial applications are proposed. This review will provide insights and strategies to the design of precious-metalfree electrocatalysts and inspire future research in alkaline water splitting.

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“…These advantages include adjustable bandgaps, [ 1 ] high electron/hole mobility, [ 2 ] higher light absorption efficiency, [ 3 ] large carrier diffusion length, [ 4 ] high extinction coefficients, and defect‐tolerated preparation. [ 5 ] In various applications such as solar cells, [ 1c,6 ] photodetectors, [ 7 ] electrical storage, [ 8 ] light‐emitting diodes, [ 9 ] lasers, [ 10 ] photocatalytic degradation, [ 11 ] photoelectrochemical water splitting, [ 12 ] the architecture, and morphology of these halide perovskites are critical to their performance. For instance, CH 3 NH 3 PbBr 3 in the form of quantum dots provides a significantly enhanced photoluminescence quantum yield of more than 20%.…”

Section: Introductionmentioning

confidence: 99%

Surfactant‐Free, One‐Step Synthesis of Lead‐Free Perovskite Hollow Nanospheres for Trace CO Detection

Cao

et al. 2021

Advanced Materials

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Owing to their special photoelectric properties, halide perovskites have always attracted research attention. Hollow‐structured halide perovskites have many practical applications but are challenging to prepare as most template methods violate their poor chemical and thermal stability. In this study, novel halide perovskite Cs2PdBr6 hollow nanospheres are prepared using a template‐free method; specifically, large quantities of highly pure lead‐free halide perovskite Cs2PdBr6 hollow nanospheres are produced at 30 °C without a surfactant. These ultrapure nanospheres exhibit superiority in chemresistive detection of CO with a detection limit of 50 ppb, which is the lowest among all the reported CO sensing materials. Moreover, in situ sum‐frequency‐generation spectra and density functional theory calculations reveal that the high sensitivity is attributable to the large specific surface area and surfactant‐free surface of rich Br− vacancies that favor CO binding. Overall, this work provides insight on regulation of the halide perovskite structure and the use of hollow spheres in gas‐sensing applications.

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Hybrid Organic–Inorganic Materials and Composites for Photoelectrochemical Water Splitting

Cited by 124 publications

References 79 publications

Halide perovskite composites for photocatalysis: A mini review

Halide perovskite composites for photocatalysis: A mini review

Design and operando/in situ characterization of precious‐metal‐free electrocatalysts for alkaline water splitting

Surfactant‐Free, One‐Step Synthesis of Lead‐Free Perovskite Hollow Nanospheres for Trace CO Detection

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