Jie He, Lin Liu, Ning Fu, Yarong Zhao, Linlin Zhang, Lele Feng, Guixiang Teng, Xingang Li* and Chun Zhang*,
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Construction of Sulfur-Vacancy-Modified 0D/2D S-Scheme Heterojunction for Enhancing Photocatalytic Cr(VI) Reduction
The rational design and construction of S-scheme heterojunctions represent an effective strategy for enhancing the photocatalytic efficiency. Nevertheless, the challenge of enabling efficient charge migration at the interface persists. Herein, a 0D/2D S-scheme heterojunction photocatalyst incorporating 0D Ag quantum dots and S-vacancy-modified Bi2S3 quantum dots with 2D MnFe2O4 ultrathin nanosheets (AgQDs/BQDs-SV/MFO) is designed and constructed via photoinduced decomposition-defect engineering strategy. Theoretical calculations and experimental results demonstrate the presence of quantum dots, S vacancies, and nanosheet structure in the AgQDs/BQDs-SV/MFO heterojunction significantly improves light harvesting, charge separation, and transfer dramatically, resulting in a high-efficiency photocatalytic degradation rate (99.5%) toward Cr(VI) under visible light irradiation (λ ≥ 420 nm) at 30 min with excellent stability. This work provides new insights for constructing effective photocatalysts for purifying Cr wastewater for environmental remediation.
期刊介绍:
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.