New insights into nanostructure/functionality-dependent catalysis of pollutants by arc-designing graphite-encapsulated silver nanoparticles
文献类型:期刊论文
作者 | Wang, Tianhui1,3; Xiao, Jiang4; Yang, Xiaoli2; Zhao, Yonghui1,3; Hu, Rui1; Ding, Jianjun1; Gong, Yi1; Tian, Xingyou1 |
刊名 | CHEMICAL ENGINEERING JOURNAL |
出版日期 | 2022-02-15 |
卷号 | 430 |
ISSN号 | 1385-8947 |
关键词 | Arc nanosynthesis Nanostructure tailoring Surface amination Catalysis reduction Efficient adsorption Synergistic integration |
DOI | 10.1016/j.cej.2021.132774 |
通讯作者 | Hu, Rui(ruihu@rntek.cas.cn) |
英文摘要 | Encapsulation of plasmonic nanoparticles in nanoshells is a promising strategy to overcome their oxidationcoalescence in the heterogeneous catalysis process. Tailoring of nanostructure/functionality to enable the efficient synergistic integration of core and shell is highly desired to enhance the plasmonic catalysis. This study applied a one-step arc discharge to design graphite-encapsulated silver (Ag@G) catalysts with tunable morphologies (14.3-46.9 nm of cores, 1.38-3.43 nm of shells) and surface functionalities (hydrophobization, or amination with maximum 2.70 x 1017/mg of Ag@G). Highly nanostructure/functionality-dependent catalysis of aquatic pollutants was established. Specifically, tailoring defective shells with thinner thickness enabled the efficient synergism of strong 7C-7C coordination of 4-nitrophenol and effective electron transfer of donors. Aminated Ag@G with ultrathin shells presented an optimal reduction for Cr(VI), establishing a negative relation of thickness with formic acid-induced reduction. Amino with proper densities (9.6-20.9/nm2) induced the capture of Cr(VI) ultrafast. Moreover, reductive N heteroatoms with proper densities (e.g., 27.7 of N/nm2) provided abundant lone pair electrons without the dramatic decline of conductivity, ensuring a favorable reduction of Cr (VI). Since arc discharge was versatile for the industrial production of nanomaterials, our work would trigger a new upsurge to arc-design nanostructures/functionalities for the catalysis and decontamination. |
WOS关键词 | CORE-SHELL NANOPARTICLES ; AG NANOPARTICLES ; LASER-ABLATION ; METAL ; REDUCTION ; DEGRADATION ; TRANSITION ; PARTICLES ; EVOLUTION ; THICKNESS |
资助项目 | National Natural Science Foundation of China[21875257] |
WOS研究方向 | Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000729469100001 |
资助机构 | National Natural Science Foundation of China |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126444] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Hu, Rui |
作者单位 | 1.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 2.North China Univ Water Resources & Elect Power, Sch Environm & Municipal Engn, Zhengzhou 450045, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Tianhui,Xiao, Jiang,Yang, Xiaoli,et al. New insights into nanostructure/functionality-dependent catalysis of pollutants by arc-designing graphite-encapsulated silver nanoparticles[J]. CHEMICAL ENGINEERING JOURNAL,2022,430. |
APA | Wang, Tianhui.,Xiao, Jiang.,Yang, Xiaoli.,Zhao, Yonghui.,Hu, Rui.,...&Tian, Xingyou.(2022).New insights into nanostructure/functionality-dependent catalysis of pollutants by arc-designing graphite-encapsulated silver nanoparticles.CHEMICAL ENGINEERING JOURNAL,430. |
MLA | Wang, Tianhui,et al."New insights into nanostructure/functionality-dependent catalysis of pollutants by arc-designing graphite-encapsulated silver nanoparticles".CHEMICAL ENGINEERING JOURNAL 430(2022). |
入库方式: OAI收割
来源:合肥物质科学研究院
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