This study explores the significant reduction effect of g-CN-modified MoS on Cr in water, attributed to its piezo-photocatalytic activity. Electrochemical tests indicate that, compared to pure MoS, the built-in electric field formed by the g-CN/MoS heterojunction effectively promotes the transfer rate of photogenerated charge carriers, thereby enhancing the reduction efficiency of Cr. Furthermore, applying mechanical force further strengthens the built-in electric field of the g-CN/MoS heterojunction, accelerating the transfer rate of photogenerated charge carriers and regulating the arrangement of the semiconductor material band structure. Moreover, cytotoxicity experiments demonstrate that the Cr solution at tested concentrations treated with the g-CN/MoS piezo-photocatalytic system exhibited negligible toxic effect on Hep-G2 cells compared to before reaction, making it an environmentally friendly choice for water treatment. The research results are of significant importance for designing efficient catalysts for environmental remediation, as well as for biological and medical applications.

中文翻译：

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通过 g-C3N4/MoS2 压电光催化中的协同电场效应增强电子转移以去除六价铬

本研究探讨了 g-CN 修饰的 MoS 对水中 Cr 的显着还原作用，这归因于其压电光催化活性。电化学测试表明，与纯MoS相比，g-CN/MoS异质结形成的内建电场有效促进了光生载流子的传输速率，从而提高了Cr的还原效率。此外，施加机械力进一步增强了g-CN/MoS异质结的内建电场，加速了光生载流子的传输速率并调节了半导体材料能带结构的排列。此外，细胞毒性实验表明，与反应前相比，用g-CN/MoS压电光催化系统处理的测试浓度的Cr溶液对Hep-G2细胞的毒性作用可以忽略不计，使其成为水处理的环保选择。研究结果对于设计用于环境修复以及生物和医学应用的高效催化剂具有重要意义。