Chen Yaqi, Zhang Linrong, Wang Jin, Sheng Huixiang, Wang Kaili, Wang Junjie, He Shunhao, Yu Liuyingzi, Lu Gang
Key Laboratory of Flexible Electronics (KLoFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.
Key Laboratory of Flexible Electronics (KLoFE) and Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China; National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China.
J Colloid Interface Sci. 2022 Nov;625:59-69. doi: 10.1016/j.jcis.2022.05.163. Epub 2022 May 31.
Interface/emulsion catalysis is an effective approach for many organic and inorganic chemical reactions. Positioning catalysts at the interface is essential for highly efficient interface/emulsion catalysis. The sheet-like Janus nanostructures may have great advantages in stabilizing emulsions and improving reaction efficiency. In this work, by using a simple emulsion reaction and photodeposition, we successfully prepare the Janus nanosheets with opposite sides composed of AuNPs/PdNPs and reduced graphene oxide (rGO) respectively, referred to as AuNP-rGO/PdNP-rGO Janus nanosheets. Due to the distinct hydrophilicities on opposite sides, the prepared Janus nanosheets demonstrate high efficiency in emulsion stabilization and emulsion catalysis. By introducing the prepared PdNP-rGO and AuNP-rGO Janus nanosheets in emulsion reactions, highly efficient hydrogenation of p-nitroanisole and photocatalytic degradation of Nile red are demonstrated. This work provides a simple and cost-effective method to prepare Janus nanosheets and realize highly efficient emulsion reactions, and this strategy can be extended to promote many other interface/emulsion reactions.
界面/乳液催化是许多有机和无机化学反应的有效方法。将催化剂定位在界面上对于高效的界面/乳液催化至关重要。片状Janus纳米结构在稳定乳液和提高反应效率方面可能具有很大优势。在这项工作中，通过简单的乳液反应和光沉积，我们成功制备了两面分别由AuNPs/PdNPs和还原氧化石墨烯（rGO）组成的Janus纳米片，即AuNP-rGO/PdNP-rGO Janus纳米片。由于两侧具有不同的亲水性，制备的Janus纳米片在乳液稳定和乳液催化方面表现出高效率。通过在乳液反应中引入制备的PdNP-rGO和AuNP-rGO Janus纳米片，证明了对硝基苯甲醚的高效氢化和尼罗红的光催化降解。这项工作提供了一种简单且经济高效的方法来制备Janus纳米片并实现高效乳液反应，并且这种策略可以扩展到促进许多其他界面/乳液反应。
