Enhanced photocatalytic activities of a hierarchical ZnO/V<sub>2</sub>C MXene hybrid with a close coupling heterojunction for the degradation of methyl orange, phenol and methylene blue dye

Zhou, Weibing; Yu, Bo; Zhu, Jiaoqun; Li, Kang; Tian, Shouqin

doi:10.1039/d2nj02658a

Cited by 7 publications

(1 citation statement)

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“…MXene has been successfully applied as a co-catalyst in TiO 2 [ 26 ], BiOCl [ 27 ], g-C 3 N 4 [ 28 ], and these composites exhibited better photocatalytic performance. ZnO/MXene hybrids with a graded flower-like structure in our previous work [ 29 ] also showed excellent photocatalytic activity due to 2D/2D heterostructure with efficient charge transfer. The ZnO nanosheets were obtained by using zinc acetate as the zinc source with a large thickness.…”

Section: Introductionmentioning

confidence: 81%

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Zhou,

Sun,

et al. 2024

Materials

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Photocatalysis performs excellently when degrading organic pollutants, but the photocatalytic degradation rate is not high for most photocatalysts due to their narrow sunlight adsorption range and high recombination rate of electron hole pairs. Herein, we use V2C-MXene with a wide sunlight adsorption range to couple ZnO porous nanosheets and form ZnO/MXene hybrids using a facile electrostatic self-assembly method. The ZnO/MXene hybrids acquired demonstrated improved photochemical efficiency in breaking down methylene blue (MB) when contrasted with porous ZnO nanosheets. The degradation rate of MB reached 99.8% under UV irradiation for 120 min after the ZnO/MXene hybrid formation, while 38.6% was attained by the ZnO porous nanosheets. Moreover, photodegradation rate constants (k) were calculated as 3.05 × 10−3 and 5.42 × 10−2 min−1 for ZnO porous nanosheets and ZnO/MXene hybrids, respectively, indicating that the photodegradation performance was enhanced by 17.8 times after the modification of V2C. This was probably because the modification of V2C can increase the specific surface area to provide more sites for MB adsorption, widen the sunlight adsorption range to produce good photothermal effect, and facilitate the transfer of photogenerated carriers in ZnO to promote the reaction of more photogenerated carriers with MB. Hence, this work offers a simple approach to creating effective photocatalysts for breaking down organic contaminants.

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Section: Introductionmentioning

confidence: 81%

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Zhou,

Sun,

et al. 2024

Materials

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Enhanced photocatalytic degradation of organic dyes by dual heterojunction of ZnO/NiWO4/V2C MXene

Zhou,

Sun,

Xiang

et al. 2025

Applied Surface Science

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Revolutionizing industrial wastewater Treatment: MXenes conquer organic pollutants in a paradigm shifting breakthrough towards Sustainability

Bendi,

Chauhan,

Vashisth

et al. 2024

Chemical Engineering Journal

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Enhanced photocatalytic activities of a hierarchical ZnO/V₂C MXene hybrid with a close coupling heterojunction for the degradation of methyl orange, phenol and methylene blue dye

Abstract: The rapid conversion of refractory organic dyes to CO2 and H2O by photocatalytic technology is an important way for water environment recovery, but it is still a major challenge due...

Cited by 7 publications

References 64 publications

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Enhanced photocatalytic degradation of organic dyes by dual heterojunction of ZnO/NiWO4/V2C MXene

Revolutionizing industrial wastewater Treatment: MXenes conquer organic pollutants in a paradigm shifting breakthrough towards Sustainability

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Enhanced photocatalytic activities of a hierarchical ZnO/V2C MXene hybrid with a close coupling heterojunction for the degradation of methyl orange, phenol and methylene blue dye

Abstract: The rapid conversion of refractory organic dyes to CO2 and H2O by photocatalytic technology is an important way for water environment recovery, but it is still a major challenge due...

Cited by 7 publications

References 64 publications

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

Enhanced photocatalytic degradation of organic dyes by dual heterojunction of ZnO/NiWO4/V2C MXene

Revolutionizing industrial wastewater Treatment: MXenes conquer organic pollutants in a paradigm shifting breakthrough towards Sustainability

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Enhanced photocatalytic activities of a hierarchical ZnO/V₂C MXene hybrid with a close coupling heterojunction for the degradation of methyl orange, phenol and methylene blue dye