An overview of photocatalysis facilitated by 2D heterojunctions

Su, Tongming; Qin, Zhangfeng; Ji, Hongbing; Wu, Zili

doi:10.1088/1361-6528/ab3f15

Cited by 70 publications

(33 citation statements)

References 188 publications

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“…[ 108 ] According to previous reports, forming type II heterojunctions and/or p–n heterojunctions can efficiently facilitate the PEC performance of 2D metal oxide/sulfide–based photoanodes. [ 109 ] In this section, we summarize the recent representative works on the construction of heterojunction photoanodes in Table 4 .…”

Section: Strategies For Improving Pec Performance Of 2d Photoanodesmentioning

confidence: 99%

Two‐Dimentional Nanostructured Metal Oxide/Sulfide–Based Photoanode for Photoelectrochemical Water Splitting

Tian

2020

Solar RRL

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The utilization of solar energy plays a vital role in relieving energy crisis and associated environmental problems. Photoelectrochemical (PEC) water splitting, which can directly transform solar energy into clean hydrogen energy, is one of the most promising strategies to utilize solar energy. 2D nanostructured metal oxides/sulfides have been widely applied as photoanodes in PEC cells due to their unique configuration and features, which can efficiently improve light absorption, enlarge electrode/electrolyte contacting interfaces, and promote carrier transfer and injection. This article begins with the introduction of performance parameters, carrier dynamics measurement, and mechanism exploration techniques for photoanodes, which is followed by an overview of research progress in using 2D nanostructure metal oxides/sulfides to fabricate efficient photoanodes for PEC water splitting. Subsequently, the recent representative strategies to optimize the PEC performance of 2D metal oxides/sulfides photoanodes, including structure engineering, defect engineering, element doping, heterojunction construction, and surface modification, are summarized. Finally, the exciting advances and future research directions for designing highly efficient 2D photoanodes are provided.

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Section: Strategies For Improving Pec Performance Of 2d Photoanodesmentioning

confidence: 99%

Two‐Dimentional Nanostructured Metal Oxide/Sulfide–Based Photoanode for Photoelectrochemical Water Splitting

Tian

2020

Solar RRL

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“…For example, the 2D/2D heterojunction owns a large contact interface that can create more charge transfer channels, and the intimate interface and strong interaction in the 2D/2D heterostructure can shorten the charge transfer distance and promote charge transfer. [ 29–33 ] Profiting from these features, the 2D/2D Z‐scheme heterojunction has emerged as a promising system and many related studies have been reported in recent years. Although some excellent reviews have systematically summarized the research progress of 2D/2D heterojunction or Z‐scheme heterojunction photocatalysts, [ 27,29,34–36 ] a comprehensive review of 2D/2D Z‐scheme heterojunctions has not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

“…[ 29–33 ] Profiting from these features, the 2D/2D Z‐scheme heterojunction has emerged as a promising system and many related studies have been reported in recent years. Although some excellent reviews have systematically summarized the research progress of 2D/2D heterojunction or Z‐scheme heterojunction photocatalysts, [ 27,29,34–36 ] a comprehensive review of 2D/2D Z‐scheme heterojunctions has not yet been reported. In addition, so far it is still controversial in identifying the Z‐scheme or type II heterojunctions in some cases in the literature.…”

Section: Introductionmentioning

confidence: 99%

Advances in 2D/2D Z‐Scheme Heterojunctions for Photocatalytic Applications

2020

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Semiconductor‐based photocatalysis technology has attracted widespread attention due to its great potential for solving both energy and environmental problems through direct utilization of inexhaustible solar energy. Among various photocatalysts, 2D/2D Z‐scheme heterojunctions exhibit superior performance in various photocatalytic applications, due to their large interfacial contact and rapid Z‐scheme charge transfer with the efficient separation of photogenerated charge carriers and maximized redox ability. In this review, the historical development of, requirements for the formation of, and identification methods of Z‐scheme heterojunctions are first introduced, followed by the summary of important advantages of 2D materials and 2D/2D heterojunctions in photocatalysis. Subsequently, a special focus is put on the recent advances of 2D/2D Z‐scheme heterojunctions for photocatalytic applications, including photocatalytic H2 production, CO2 reduction, and degradation of pollutants. Finally, a brief summary and perspectives on the challenges and future research topics of 2D/2D Z‐scheme heterojunction photocatalysts are presented.

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“…To solve these problems, photocatalysts have been developed for different applications, such as hydrogen evolution, pollutant treatment, antibiosis, cancer therapy, and so on. [1][2][3][4][5][6][7][8][9] Graphitic carbon nitride, a polymeric semiconductor, became one of the most promising photocatalysts since Wang's group reported this material for hydrogen production from water under visible light. 10 It should be noted that graphitic carbon nitride is often wrongly named "g-C 3 N 4 " in the literature, but "perfect" g-C 3 N 4 has not been synthesized so far.…”

Section: Introductionmentioning

confidence: 99%