School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China; Department of Physics, Zhejiang Normal University, Jinhua, 321004, China.
School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, China; College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, China.
Chemosphere. 2019 Aug;228:212-218. doi: 10.1016/j.chemosphere.2019.04.121. Epub 2019 Apr 19.
In this work, it is found that the hydrothermally-synthesized bismuth oxychloride can behave both the piezocatalysis and photocatalysis for the Rhodamine B dye decomposition. ∼99% decomposition efficiency is achieved after both vibrating and lighting the Rhodamine B dye solution for ∼96 min with the addition of bismuth oxychloride catalyst, while the ∼72% and ∼26% decomposition efficiencies are obtained for only photocatalysis or only piezocatalysis respectively. In bi-catalysis, the mechanical strain produced due to vibration will directly provide an electric field that will increase the separation between the photo-induced electron-hole pairs, yielding to the enhanced decomposition performance of bi-catalysis. There is no significant change in the bi-catalytic performance of bismuth oxychloride nanomaterial observed after being recycled four times. Bismuth oxychloride catalyst is potential for the bi-catalytic decomposition treatment of wastewater through harvesting both the environmental vibration energy and light energy.
在这项工作中，人们发现水热合成的氯氧化铋既能表现出压电催化作用，也能表现出光催化作用，可用于分解罗丹明 B 染料。在向罗丹明 B 染料溶液中添加氯氧化铋催化剂并振动和光照约 96 分钟后，可实现约 99%的分解效率，而仅进行光催化或仅进行压电催化，分别可获得约 72%和约 26%的分解效率。在双催化中，由于振动产生的机械应变会直接提供电场，从而增加光诱导电子-空穴对的分离，从而提高双催化的分解性能。四次回收后，氯氧化铋纳米材料的双催化性能没有明显变化。氯氧化铋催化剂有望通过同时收集环境振动能和光能，用于废水的双催化分解处理。
