Guo Jiahao, Cao Yitao, Shi Run, Waterhouse Geoffrey I N, Wu Li-Zhu, Tung Chen-Ho, Zhang Tierui
Key Laboratory of Photochemical Conversion and Optoelectronic Material, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
Angew Chem Int Ed Engl. 2019 Jun 17;58(25):8443-8447. doi: 10.1002/anie.201902791. Epub 2019 May 14.
Synthesizing nanomaterials with anisotropic architectures, especially two-dimensional (2D) nanosheets (NSs), is a key focus of materials science research. Metal sulfide nanosheets (MSNSs) are typically obtained involving exfoliation of bulk metal sulfides with layered structures. The synthesis of NSs of intrinsically non-layered metal sulfides has received relatively less attention. Metal alkanethiolates with lamellar structures are now shown to serve as effective scaffolds for constructing NSs. A novel photochemical step was employed to transform 2D metal thiolates into MSNSs. By this strategy the 2D nature of metal thiolate precursors was preserved in the final products, resulting in the successful synthesis of NSs of binary PbS, CdS, and Cu S , as well as ternary wurtzite CuInS , Cu SnS . Results encourage the wider utilization of photochemical strategies in the synthesis of anisotropic MSNSs.
合成具有各向异性结构的纳米材料，尤其是二维（2D）纳米片（NSs），是材料科学研究的一个关键重点。金属硫化物纳米片（MSNSs）通常是通过对具有层状结构的块状金属硫化物进行剥离而获得的。本征非层状金属硫化物纳米片的合成受到的关注相对较少。现已表明，具有层状结构的金属硫醇盐可作为构建纳米片的有效支架。采用了一种新颖的光化学步骤将二维金属硫醇盐转化为MSNSs。通过这种策略，金属硫醇盐前体的二维性质在最终产物中得以保留，从而成功合成了二元PbS、CdS和CuS以及三元纤锌矿型CuInS、CuSnS的纳米片。这些结果鼓励在各向异性MSNSs的合成中更广泛地应用光化学策略。
