g-C3N4/ITO/Co-BiVO4 Z-scheme composite for solar overall water splitting

Dai, Dujuan; Wang, Peng; Bao, Xiaolei; Xu, Yayang; Wang, Zhaoqi; Guo, Yuhao; Wang, Zeyan; Zheng, Zhaoke; Liu, Yuanyuan; Cheng, Hefeng; Huang, Baibiao

doi:10.1016/j.cej.2021.134476

Cited by 44 publications

(16 citation statements)

References 47 publications

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“…The separation efficiency of the photogenerated carrier determines the photocatalytic activity of semiconductors [48–50] . The photocurrent response experiments were employed to explore the ability of Co−Co PBA and Zn−Co PBA cocatalysts to promote the separation of photogenerated carriers of BiVO 4 .…”

Section: Resultsmentioning

confidence: 99%

“…The separation efficiency of the photogenerated carrier determines the photocatalytic activity of semiconductors. [48][49][50] The photocurrent response experiments were employed to explore the ability of CoÀ Co PBA and ZnÀ Co PBA cocatalysts to promote the separation of photogenerated carriers of BiVO 4 . The increased photocurrent of BiVO 4 after loading PBA cocatalysts suggests a more effective separation of photogenerated carriers and better photocatalytic water oxidation activity (Figure 7a).…”

Section: Interpretation For the Promoted Photocatalytic Activity Of Bivomentioning

confidence: 99%

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Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Meng

Zhang

et al. 2022

Chemistry A European J

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The efficiency of photocatalytic overall water splitting reactions is usually limited by the high energy barrier and complex multiple electron‐transfer processes of the oxygen evolution reaction (OER). Although bismuth vanadate (BiVO4) as the photocatalyst has been developed for enhancing the kinetics of the water oxidation reaction, it still suffers from challenges of fast recombination of photogenerated electron‐hole pairs and poor photocatalytic activity. Herein, six MII‐CoIII Prussian blue analogues (PBAs) (M=Mn, Fe, Co, Ni, Cu and Zn) cocatalysts are synthesized and deposited on the surface of BiVO4 for boosting the surface catalytic efficiency and enhancing photogenerated carries separation efficiency of BiVO4. Six MII‐CoIII PBAs@BiVO4 photocatalysts all demonstrate increased photocatalytic water oxidation performance compared to that of BiVO4 alone. Among them, the Co−Co PBA@BiVO4 photocatalyst is employed as a representative research object and is thoroughly characterized by electrochemistry, electronic microscope as well as multiple spectroscopic analyses. Notably, BiVO4 coupling with Co−Co PBA cocatalyst could capture more photons than that of pure BiVO4, facilitating the transfer of photogenerated charge carriers between BiVO4 and Co−Co PBA as well as the surface catalytic efficiency of BiVO4. Overall, this work would promote the synthesis strategy development for exploring new types of composite photocatalysts for water oxidation.

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Section: Resultsmentioning

confidence: 99%

Section: Interpretation For the Promoted Photocatalytic Activity Of Bivomentioning

confidence: 99%

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Meng

Zhang

et al. 2022

Chemistry A European J

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“…25 ms-BiVO 4 is usually used as the photocatalyst for oxidizing water or organics, while the reduction of CO 2 to CO can be hardly realized on ms-BiVO 4 due to its positive CB potential (0.33 V, vs. NHE). 26,27 However, our group has previously reported that the lattice mismatch strain between the substrate layer SnO 2 and the epitaxial growth layer BiVO 4 can effectively change the CB edge energy level of tetragonal BiVO 4 , thus enhancing the reducing ability. 28–30 This observation prompts us to test the possibility of photocatalytic reduction of CO 2 using tetragonal BiVO 4 .…”

Section: Introductionmentioning

confidence: 99%

Facilitating space charge directional separation for enhancing photocatalytic CO₂ reduction over tetragonal BiVO₄

Dai

et al. 2022

Catal. Sci. Technol.

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“…It is an effective way to composite different materials to overcome their respective defects. Some researchers have prepared different composites, such as g-C 3 N 4 /MoS 2 [23], g-C 3 N 4 /BiOBr [24], and g-C 3 N 4 /BiVO 4 [25], which show superior photocatalytic performance. The material composite of BiPO 4 and g-C 3 N 4 can compensate for each other's defects and take advantage of the high carrier separation efficiency of BiPO 4 and the wide range of light absorption of g-C 3 N 4 [26].…”

Section: Introductionmentioning

confidence: 99%

Degradation of Tetracycline Hydrochloride by a Novel CDs/g-C3N4/BiPO4 under Visible-Light Irradiation: Reactivity and Mechanism

Qian

Jiang³

et al. 2022

Catalysts

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In recent years, with the large-scale use of antibiotics, the pollution of antibiotics in the environment has become increasingly serious and has attracted widespread attention. In this study, a novel CDs/g-C3N4/BiPO4 (CDBPC) composite was successfully synthesized by a hydrothermal method for the removal of the antibiotic tetracycline hydrochloride (TC) in water. The experimental results showed that the synthesized photocatalyst was crystalline rods and cotton balls, accompanied by overlapping layered nanosheet structures, and the specific surface area was as high as 518.50 m2/g. This photocatalyst contains g-C3N4 and bismuth phosphate (BiPO4) phases, as well as abundant surface functional groups such as C=N, C-O, and P-O. When the optimal conditions were pH 4, CDBPC dosage of 1 g/L, and TC concentration of 10 mg/L, the degradation rate of TC reached 75.50%. Active species capture experiments showed that the main active species in this photocatalytic system were holes (h+), hydroxyl radicals, and superoxide anion radicals. The reaction mechanism for the removal of TC by CDBPC was also proposed. The removal of TC was mainly achieved by the synergy between the adsorption of CDBPC and the oxidation of both holes and hydroxyl radicals. In this system, TC was adsorbed on the surface of CDBPC, and then the adsorbed TC was degraded into small molecular products by an attack with holes and hydroxyl radicals and finally mineralized into carbon dioxide and water. This study indicated that this novel photocatalyst CDBPC has a huge potential for antibiotic removal, which provides a new strategy for antibiotic treatment of wastewater.

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g-C3N4/ITO/Co-BiVO4 Z-scheme composite for solar overall water splitting

Cited by 44 publications

References 47 publications

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Facilitating space charge directional separation for enhancing photocatalytic CO₂ reduction over tetragonal BiVO₄

Degradation of Tetracycline Hydrochloride by a Novel CDs/g-C3N4/BiPO4 under Visible-Light Irradiation: Reactivity and Mechanism

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g-C3N4/ITO/Co-BiVO4 Z-scheme composite for solar overall water splitting

Cited by 44 publications

References 47 publications

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO4

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO4

Facilitating space charge directional separation for enhancing photocatalytic CO2 reduction over tetragonal BiVO4

Degradation of Tetracycline Hydrochloride by a Novel CDs/g-C3N4/BiPO4 under Visible-Light Irradiation: Reactivity and Mechanism

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Product

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Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Prussian Blue Type Cocatalysts for Enhancing the Photocatalytic Water Oxidation Performance of BiVO₄

Facilitating space charge directional separation for enhancing photocatalytic CO₂ reduction over tetragonal BiVO₄