Song Wenjie, Wang Huihui, Zhang Ziqi, Cao Yang, Zhang Mingxin, Zhang Ping, Zhang Yongming, Liu Zhongxin, Shen Yijun, Huang Wei
State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, PR China.
State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan Provincial Key Lab of Fine Chemistry, School of Chemical Engineering and Technology, Hainan University, Haikou, Hainan 570228, PR China; Qiongtai Normal University, Key Laboratory of Child Cognition & Behavior Development of Hainan Province, Haikou, Hainan 571127, PR China.
J Colloid Interface Sci. 2023 Nov 15;650(Pt B):1044-1051. doi: 10.1016/j.jcis.2023.07.044. Epub 2023 Jul 16.
Solar interfacial evaporation is one of the most efficient and environmentally-friendly clean freshwater production technologies. Plasma metal nanoparticles are excellent optical absorption materials, but their high cost and inherent resonance narrow bandwidth absorption limit their application. In this work, commercial cellulose papers are used as substrates to synthesize Ag-Ni/cellulose paper by the seed-mediated method. The Ag-Ni/cellulose paper exhibits high light absorption at the full wavelength (200-2500 nm) resulting from the synergistic effect of localized surface plasmon resonance (LSPR) of Ag NPs and the interband transitions (IBTs) of Ni. Under one-sun irradiation (1 kW m), the energy utilization efficiency of Ag-Ni/cellulose paper is as high as 93.8%, and the water evaporation rate is 1.87 kg m h. Diffusion inhibition experiment results show that the Ag-Ni/cellulose paper exhibits excellent antibacterial performance, and the antibacterial performance is highly related with Ag NPs content. These provide new opportunities for commercial production of competitive cost, green, and portable solar evaporators for different application sceneries.
太阳能界面蒸发是最高效且环保的清洁淡水生产技术之一。等离子体金属纳米颗粒是优异的光吸收材料，但其高成本和固有的共振窄带宽吸收限制了它们的应用。在这项工作中，商用纤维素纸用作基底，通过种子介导法合成了Ag-Ni/纤维素纸。由于Ag纳米颗粒的局域表面等离子体共振（LSPR）和Ni的带间跃迁（IBT）的协同效应，Ag-Ni/纤维素纸在全波长（200 - 2500 nm）范围内表现出高光吸收。在一个太阳辐照（1 kW m）下，Ag-Ni/纤维素纸的能量利用效率高达93.8%，水蒸发速率为1.87 kg m h。扩散抑制实验结果表明，Ag-Ni/纤维素纸具有优异的抗菌性能，且抗菌性能与Ag纳米颗粒含量高度相关。这些为商业生产具有成本竞争力、绿色且便携的太阳能蒸发器以用于不同应用场景提供了新机遇。
