文献类型：期刊文献

英文题名：A gravity-driven high-flux catalytic filter prepared using a naturally three-dimensional porous rattan biotemplate decorated with Ag nanoparticles

作者：Li, Jingpeng[1,2] Ma, Rumin[1] Lu, Yun[3] Wu, Zaixing[1] Su, Minglei[2] Jin, Kexia[2] Qin, Daochun[2] Zhang, Rong[2] Bai, Ruihua[1] He, Sheng[1] Chen, Yuhe[1] Jiang, Zehui[2]

第一作者：Li, Jingpeng

通信作者：Li, JP[1];Chen, YH[1];Li, JP[2];Qin, DC[2];Jiang, ZH[2]

机构：[1]China Natl Bamboo Res Ctr, Bamboo State Forestry Adm, Engn Technol Res Ctr Bldg & Decorating Mat, Key Lab High Efficient Proc Bamboo Zhejiang Prov, Hangzhou 310012, Peoples R China;[2]Int Ctr Bamboo & Rattan, Key Lab Bamboo & Rattan Sci & Technol, Beijing 100102, Peoples R China;[3]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2020

卷号：22

期号：20

起止页码：6846-6854

外文期刊名：GREEN CHEMISTRY

收录：;EI(收录号：20204509461183);Scopus(收录号：2-s2.0-85095133916);WOS:【SCI-EXPANDED(收录号:WOS:000579757000043)】；

基金：This work was supported by the Fundamental Research Funds for the Central Non-Profit Research Institution of CAF (CAFYBB2017MA023) and the Zhejiang Provincial Natural Science Foundation of China (LQ20C160002). The authors would like to thank Teacher Rong from Zhejiang University for support of the SEM analysis.

语种：英文

外文关键词：Ammonia - Catalyst activity - Cost effectiveness - Efficiency - Metal nanoparticles - Microchannels - Nanocatalysts - Silver nanoparticles

摘要：Plant-based natural biotemplates are increasingly gaining popularity for the development of catalytic filters in water treatment owing to their unique features, such as exquisite microstructures, renewable properties, and environmental friendliness. However, the development of catalytic filters, not limited to plant-based filters, to achieve both super-high water flux and excellent treatment efficiency, particularly under gravity-driven conditions, remains challenging. Therefore, herein, an efficient gravity-driven catalytic filter was fabricated using a naturally three-dimensional (3D) porous rattan biotemplate for water treatment. After reducing Ag(NH3)(2)(+) ions via an in situ process that did not involve the addition of reductants or stabilizers, Ag nanoparticles (NPs) were immobilized in the inner microchannel of the porous rattan cane. The intrinsically aligned microchannels in the vascular bundles of rattan (diameter 24-420 mu m) acted as reaction compartments for the immobilization and stabilization of Ag NPs. Furthermore, the 3D Ag/rattan filter exhibited excellent gravity-driven catalytic activity (up to 97.2% treatment efficiency for a high water flux of 7471 L m(-2) h(-1)), good recyclability, high water permeability, and stability toward 4-nitrophenol reductions. These excellent properties were attributed to the synergistic effect of the evenly distributed nanosized Ag catalysts and microchannel structures of rattan. Rattan materials are abundantly available and naturally porous, and they can readily serve as cost-effective, nontoxic, biodegradable, and sustainable sources in numerous catalytic applications.