Remarkable photocatalytic activity enhancement of CO2 conversion over 2D/2D g-C3N4/BiVO4 Z-scheme heterojunction promoted by efficient interfacial charge transfer

Lu, Mengfei; Li, Qiaoqiao; Zhang, Chengliang; Fan, Xiaoxing; Li, Lei; Dong, Yuming; Chen, Guoqing; Shi, Haifeng

doi:10.1016/j.carbon.2020.01.038

Cited by 173 publications

(65 citation statements)

References 61 publications

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“…Therefore, various tactics have been applied to boost its activity, such as nonmetal doping [29], noble metal deposition [30,31], and heterojunction construction [32][33][34][35]. The construction of a 2D/2D heterostructure photocatalyst is generally considered the best way to achieve the efficient separation of photoinduced electrons and holes, and finally strengthen its photocatalytic activity [26,[36][37][38]. Wang et al [39] constructed an ultrathin g-C3N4/Bi2WO6 composite via a bottom-up route, and the IBF degradation efficiency of 25% g-C3N4/Bi2WO6 reached 96%.…”

Section: Introductionmentioning

confidence: 99%

Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity

Zhang

Liu

2021

Chinese Journal of Catalysis

213

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The design and construction of heterojunction photocatalysts, which possess a staggered energy band structure and appropriate interfacial contact, is an effective way to achieve outstanding photocatalytic performance. In this study, 2D/2D BiOBr/g-C3N4 heterojunctions were successfully obtained by a convenient in situ self-assembly route. Under simulated sunlight irradiation, 99% of RhB (10 mg•L -1 , 100 mL) was efficiently degraded by 1.5-BiOBr/g-C3N4 within 30 min, which is better than the performance of both BiOBr and g-C3N4, and it has superior stability. In addition, the composite also exhibits enhanced photocatalytic activity for H2 production. The enhanced activity can be attributed to the intimate interface contact, the larger surface area, and the highly efficient separation of photoinduced electron-hole pairs. Based on the experimental results, a novel S-scheme model was proposed to illuminate the transfer process of charge carriers. This study presents a simple way to develop novel step-scheme photocatalysts for environmental and related applications.

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Section: Introductionmentioning

confidence: 99%

Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity

Zhang

Liu

2021

Chinese Journal of Catalysis

213

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“…For example, Lu et al prepared a 2D/2D g‐C 3 N 4 /BiVO 4 Z‐scheme heterojunction with efficient interfacial charge transfer for significantly improved photocatalytic CO 2 reduction performance. [ 155 ] The ultrathin g‐C 3 N 4 nanosheets were synthesized by the direct calcination of the mixed dicyandiamide and NH 4 Cl (the mass ratio was 1:10) at 550 °C for 4 h, and the 2D/2D g‐C 3 N 4 /BiVO 4 composite ( Figure a) was prepared via a one‐step hydrothermal method by adding the prepared g‐C 3 N 4 into the precursor solution of BiVO 4 . Figure 18b,c displays the photocatalytic CO 2 reduction activities of the as‐prepared samples under visible light irradiation.…”

Section: Advances In 2d/2d Z‐scheme Heterojunctions For Photocatalytimentioning

confidence: 99%

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

Liu

Zhang

2020

Solar RRL

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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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“…Time-resolved fluorescence (TRF) spectroscopy and transient absorption spectroscopy (TA) are two of the most common methods used to study these processes. In the field of surface hybridization applied in the field of photocatalysis, the former has been widely used, [131][132][133][134][135] but the latter is less attributed to the complexity of the test. To confirm the electron injection from the light-excited porphyrin dye ( 1 ZnP*) into the TiO 2 particles, the TRF measurements for ZnP CNPA -| TiO 2 , ZnP CNPA films without TiO 2 and ZnP CNPA dissolved in dimethylformamide were carried out.…”

Section: Carrier Dynamicsmentioning

confidence: 99%

Photocatalytic activity enhanced via surface hybridization

Guo

et al. 2020

Carbon Energy

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Surface hybrid inorganic semiconductors photocatalysts with π conjugated structure have recently been widely used in the field of photocatalytic environmental remediation and energy conversion. Surface hybridization is considered to be an efficient way to significantly enhance the photocatalytic activity by several times, completely inhibit photocorrosion of inorganic photocatalysts and expand the spectral response range of photocatalysts. This review provides a comprehensive overview of the surface hybridization definition, the principle of enhancing photocatalytic performance and the control factors of surface hybridization to promote photoactivity. Summarize the preparation and structural identification method of the surface hybrid photocatalyst. Special emphasis is placed on the various photocatalytic system construction of surface hybridization. The development of surface hybrid photocatalysts for pollutant degradation and energy conversion are further presented. Finally, the challenges and future development prospects of surface hybridization in photocatalysis are discussed. We hope this critical review can provide a clear picture of the state‐of‐the‐art achievements and facilitate the applications of surface hybrid photocatalysts in environmental remediation and energy conversion.

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Remarkable photocatalytic activity enhancement of CO2 conversion over 2D/2D g-C3N4/BiVO4 Z-scheme heterojunction promoted by efficient interfacial charge transfer

Cited by 173 publications

References 61 publications

Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity

Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity

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

Photocatalytic activity enhanced via surface hybridization

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