Highly stable halide perovskites for photocatalysis <i>via</i> multi-dimensional structure design and <i>in situ</i> phase transition

Gong, Yiqin; Ye, Fan; Zhu, Qiliang; Yan, Wei; Shen, Jianhua; Xue, Kan‐Hao; Zhu, Yihua; Li, Chunzhong

doi:10.1039/d2dt01639g

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…It was interesting to find that the optimal THAI 0.5 Br 0.5 -passivated electrode exhibited a lot of hexagonal sheet-like particles on the surface, which may correlate with the formation of FAPbBr 3 crystals. [62][63][64][65] Meanwhile, these hexagonal sheet-like particles would provide extra electro-active sites than the others and have a good intra-particle charge transfer between the outer FAPbBr 3 crystals and the inner FA(Pb 1−x Ge x )I 3 films. On the other hand, the electrodes passivated by THA-Br 0.5 Cl 0.5 (Fig.…”

Section: Morphologymentioning

confidence: 99%

Surfactant effects on electrochemically durable lead halide perovskite electro-catalysts

et al. 2023

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Section: Morphologymentioning

confidence: 99%

Surfactant effects on electrochemically durable lead halide perovskite electro-catalysts

et al. 2023

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“…(g) Schematic illustration of the band diagram of cubic CsPbBr 3 quantum dots and tetragonal CsPb 2 Br 5 nanosheets vs a vacuum (right) and NHE, pH = 7 (left). Reproduced with permission from ref . Copyright 2022 The Royal Society of Chemistry.…”

Section: Potential Applications Of Unconventional-phase Nanomaterialsmentioning

confidence: 99%

“…In another work, Gong et al . employed a surficial molecular modification strategy and a multi-dimensional structure design to enhance the performance of CsPbBr 3 quantum dots for photocatalysis . 2-Phenylethanamine bromide was used to passivate the bromide vacancies on the surface of CsPbBr 3 quantum dots.…”

Section: Potential Applications Of Unconventional-phase Nanomaterialsmentioning

confidence: 99%

Recent Progress on Phase Engineering of Nanomaterials

Yun,

Ge,

Shi

et al. 2023

Chem. Rev.

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As a key structural parameter, phase depicts the arrangement of atoms in materials. Normally, a nanomaterial exists in its thermodynamically stable crystal phase. With the development of nanotechnology, nanomaterials with unconventional crystal phases, which rarely exist in their bulk counterparts, or amorphous phase have been prepared using carefully controlled reaction conditions. Together these methods are beginning to enable phase engineering of nanomaterials (PEN), i.e. , the synthesis of nanomaterials with unconventional phases and the transformation between different phases, to obtain desired properties and functions. This Review summarizes the research progress in the field of PEN. First, we present representative strategies for the direct synthesis of unconventional phases and modulation of phase transformation in diverse kinds of nanomaterials. We cover the synthesis of nanomaterials ranging from metal nanostructures such as Au, Ag, Cu, Pd, and Ru, and their alloys; metal oxides, borides, and carbides; to transition metal dichalcogenides (TMDs) and 2D layered materials. We review synthesis and growth methods ranging from wet-chemical reduction and seed-mediated epitaxial growth to chemical vapor deposition (CVD), high pressure phase transformation, and electron and ion-beam irradiation. After that, we summarize the significant influence of phase on the various properties of unconventional-phase nanomaterials. We also discuss the potential applications of the developed unconventional-phase nanomaterials in different areas including catalysis, electrochemical energy storage (batteries and supercapacitors), solar cells, optoelectronics, and sensing. Finally, we discuss existing challenges and future research directions in PEN.

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Structural Modification Strategies, Interfacial Charge‐Carrier Dynamics, and Solar Energy Conversion Applications of Organic–Inorganic Halide Perovskite Photocatalysts

Feng

Mak

et al. 2023

Small Methods

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Over the past few decades, organic–inorganic halide perovskites (OIHPs) as novel photocatalyst materials have attracted intensive attention for an impressive variety of photocatalytic applications due to their excellent photophysical (chemical) properties. Regarding practical application and future commercialization, the air–water stability and photocatalytic performance of OIHPs need to be further improved. Accordingly, studying modification strategies and interfacial interaction mechanisms is crucial. In this review, the current progress in the development and photocatalytic fundamentals of OIHPs is summarized. Furthermore, the structural modification strategies of OIHPs, including dimensionality control, heterojunction design, encapsulation techniques, and so on for the enhancement of charge‐carrier transfer and the enlargement of long‐term stability, are elucidated. Subsequently, the interfacial mechanisms and charge‐carrier dynamics of OIHPs during the photocatalytic process are systematically specified and classified via diverse photophysical and electrochemical characterization methods, such as time‐resolved photoluminescence measurements, ultrafast transient absorption spectroscopy, electrochemical impedance spectroscopy measurements, transient photocurrent densities, and so forth. Eventually, various photocatalytic applications of OIHPs, including hydrogen evolution, CO2 reduction, pollutant degradation, and photocatalytic conversion of organic matter.

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Highly stable halide perovskites for photocatalysis via multi-dimensional structure design and in situ phase transition

Abstract: Lead halide perovskite CsPbBr3 quantum dots (QDs) possess several desirable features which enable them to be promising candidates for photocatalysis. However, their instability caused by inherent liquid-like ionic property hampers...

Cited by 4 publications

References 44 publications

Surfactant effects on electrochemically durable lead halide perovskite electro-catalysts

Surfactant effects on electrochemically durable lead halide perovskite electro-catalysts

Recent Progress on Phase Engineering of Nanomaterials

Structural Modification Strategies, Interfacial Charge‐Carrier Dynamics, and Solar Energy Conversion Applications of Organic–Inorganic Halide Perovskite Photocatalysts

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