Wei Wenxian, Zhang Zhenxin, You Guoxiang, Shan Yun, Xu Zuozheng
Testing Center, Yangzhou University Yangzhou Jiangsu 225009 China.
Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University Nanjing Jiangsu 210098 China.
RSC Adv. 2019 Sep 12;9(49):28768-28774. doi: 10.1039/c9ra05644k. eCollection 2019 Sep 9.
The exploitation of stable and earth-abundant photocatalysts with high catalytic activity remains a significant challenge for removing heavy metals from wastewater. Different from complex nanostructuring, this work focuses on a simple and feasible way to design catalysts. Herein, MoO nanosheets were fabricated and grown vertically on the surface of a quartz tablet using a one-step chemical vapor deposition method. The morphology, construction and optical properties of the MoO were characterized by XRD, XPS, SEM, HRTEM and UV-Vis methods, and the possible growth mechanism was also discussed. It can be found that the MoO nanosheets exhibited significantly enhanced visible light photocatalytic reduction capacity with stable recyclability to Cr(vi). The results show that the MoO nanosheets can be used as a cost-effective and recyclable photocatalyst for the removal of Cr(vi) from water. Our findings provide new inspiration for the design of new types of catalysts.
开发具有高催化活性的稳定且储量丰富的光催化剂仍然是从废水中去除重金属的一项重大挑战。与复杂的纳米结构不同，这项工作专注于一种简单可行的催化剂设计方法。在此，采用一步化学气相沉积法在石英片表面制备并垂直生长了MoO纳米片。通过XRD、XPS、SEM、HRTEM和UV-Vis方法对MoO的形貌、结构和光学性质进行了表征，并讨论了可能的生长机制。结果发现，MoO纳米片对Cr(Ⅵ)表现出显著增强的可见光光催化还原能力以及稳定的可回收性。结果表明，MoO纳米片可作为一种经济高效且可回收的光催化剂用于从水中去除Cr(Ⅵ)。我们的研究结果为新型催化剂的设计提供了新的灵感。
