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

Liu, Xiaolei; Zhang, Qingzhe; Ma, Dongling

doi:10.1002/solr.202000397

Cited by 91 publications

(86 citation statements)

References 187 publications

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“…[8,9] For Z-scheme mechanism, SC II with the higher Fermi level spontaneously ensures its electron flow to SC I through the interface of SC II-SC I until the two Fermi energies with same level (Figure 2a,b). Positive and negative charges gather at interface areas near SC II and SC I due to the Fermi level difference between SC II and SC I, [10] respectively, thus generating an internal electric field (IEF). Photoirradiated electrons transfer from CB of SC I to SC II VB with IEF action in Figure 2c.…”

Section: Introductionmentioning

confidence: 99%

S‐Scheme Photocatalytic Systems

et al. 2021

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Recently, step‐scheme (S‐scheme) photocatalysts have received widespread attention in the field of solar fuel development and transformation because of efficient charge spatial separation along with strong redox capabilities. Herein, the development history of S‐scheme photocatalysts is summarized and reviewed, from Z‐scheme photocatalysts to S‐scheme photocatalysts. Advantages of S‐scheme photocatalysts are also discussed in depth and detail, including design principles and construction strategies as well as charge transfer mechanisms. In addition, identification characterizations for S‐scheme photocatalysts and their solar energy conversion applications are also reviewed. Finally, conclusions and outlooks for solar energy conversion challenges are demonstrated. It provides insights and up‐to‐date information to enable the scientific community to fully tap into the potential of S‐scheme photocatalysts in renewable energy generation and environmental remediation.

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Section: Introductionmentioning

confidence: 99%

S‐Scheme Photocatalytic Systems

et al. 2021

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“…In addition, because of the electrostatic repulsion between the same kind of charges, it is difficult to migrate and enrich electrons and holes. For overcoming the shortcomings of type II junction, Z-scheme that is similar to plant photosynthesis has attracted intense attentions [196][197][198][199][200]. In comparison with the traditional type II semiconductor heterojunction, Z-scheme junction can not only achieve efficient charge separation, but also retain the inherent redox abilities of photocatalyst.…”

Section: Semiconductor Heterojunctionmentioning

confidence: 99%

Recent advances on Bi2WO6-based photocatalysts for environmental and energy applications

Chen

Liu

et al. 2021

Chinese Journal of Catalysis

227

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Bismuth tungstate (Bi2WO6) has become a research hotspot due to its potential in photocatalytic energy conversion and environmental purification. Nevertheless, the limited light absorption and fast recombination of photogenerated carriers hinder the further improvement of the photocatalytic performance of Bi2WO6. Herein, we provide a systematic review for the recent advances on Bi2WO6-based photocatalysts. It starts with the crystal structure, optical properties and photocatalytic fundamentals of Bi2WO6. Then, we focus on the modification strategies of Bi2WO6 based on morphology control, atomic modulation and composite fabrication for diverse photocatalytic applications, such as organic synthesis, water splitting, CO2 reduction, water treatment, air purification, bacterial inactivation, etc. Finally, some current challenges and future development prospects are proposed. We expect that this review can provide a useful reference and guidance for the development of efficient Bi2WO6 photocatalysts.

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“…The Z‐scheme heterojunction not only promotes the separation and transfer of charge carriers, but also simultaneously preserves the excellent redox capacity of each component, which is more beneficial to upgrade the photocatalytic activity. [ 111–114 ] The Z‐scheme photocatalysts with an electron mediator can boost the charge transfer. Because of the outstanding conductivity, metal conductors (Au, Ag, Pt, and Bi) can be utilized as electron mediator, improving the charge transfer via the Z‐scheme bridge.…”

Section: Strategies For Enhancing Photocatalytic Activity Of Metallic Bi‐based Photocatalystsmentioning

confidence: 99%

Recent Progress on Metallic Bismuth‐Based Photocatalysts: Synthesis, Construction, and Application in Water Purification

Zhang

et al. 2021

Solar RRL

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Semiconductor photocatalysis technology is considered to be a promising technique to solve increasingly serious environmental pollution. Metallic bismuth (Bi)‐based photocatalysts have received much attention due to their extensive applications in environmental remediation because metallic Bi can function as a cocatalyst or a direct plasmonic photocatalyst to accelerate the photogenerated charge separation and thus improve their photocatalytic activity. In the last decade, enormous efforts have been made to seek excellent metallic Bi‐based photocatalysts as well as reveal the corresponding photocatalytic reaction mechanism for the degradation of organic pollutants in water. Herein, the unique electronic and optical properties and main synthesis methods of metallic Bi, as well as the detailed strategies and technology routes are timely summarized and discussed to enhance the photocatalytic activity of metallic Bi‐based photocatalysts in water purification. Finally, the future development and challenges of metallic Bi‐based photocatalysts are briefly discussed, summarized, and prospected.

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

Cited by 91 publications

References 187 publications

S‐Scheme Photocatalytic Systems

S‐Scheme Photocatalytic Systems

Recent advances on Bi2WO6-based photocatalysts for environmental and energy applications

Recent Progress on Metallic Bismuth‐Based Photocatalysts: Synthesis, Construction, and Application in Water Purification

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