Bai Xiaopeng, Lam Shiu Hei, Hu Jingtian, Chui Ka Kit, Zhu Xiao-Ming, Shao Lei, Chow Tsz Him, Wang Jianfang
Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China.
State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao SAR 999078, China.
ACS Appl Mater Interfaces. 2023 Dec 6;15(48):55856-55869. doi: 10.1021/acsami.3c13479. Epub 2023 Nov 20.
Transferring traditional plasmonic noble metal nanomaterials from the laboratory to industrial production has remained challenging due to the high price of noble metals. The development of cost-effective non-noble-metal alternatives with outstanding plasmonic properties has therefore become essential. Herein, we report on the gram-scale production of differently shaped TiN nanoparticles with strong plasmon-enabled broadband light absorption, including differently sized TiN nanospheres, nanobipyramids, and nanorod arrays. The TiN nanospheres and nanobipyramids are further coembedded in highly porous poly(vinyl alcohol) films to function as a photothermal material for solar seawater desalination. A seawater evaporation rate of 3.8 kg m h is achieved, which marks the record performance among all plasmonic solar seawater desalination systems reported so far. The removal percentage of phenol reaches 98.3%, which is attributed to the joint action of the excellent photocatalytic ability and the superhydrophilicity of the porous TiN-based composite film.
由于贵金属价格高昂，将传统的等离子体贵金属纳米材料从实验室规模扩大到工业生产一直具有挑战性。因此，开发具有出色等离子体特性的经济高效的非贵金属替代品变得至关重要。在此，我们报告了克级规模生产具有强等离子体驱动宽带光吸收的不同形状的TiN纳米颗粒，包括不同尺寸的TiN纳米球、纳米双锥体和纳米棒阵列。TiN纳米球和纳米双锥体进一步共嵌入高度多孔的聚乙烯醇薄膜中，用作太阳能海水淡化的光热材料。实现了3.8 kg m⁻² h⁻¹的海水蒸发速率，这是迄今为止报道的所有等离子体太阳能海水淡化系统中的最高性能记录。苯酚的去除率达到98.3%，这归因于多孔TiN基复合膜优异的光催化能力和超亲水性的共同作用。
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