Lignin-coordinated highly dispersed Pd-Zn alloy nanocluster supported on N-doped nanolayer carbon and its application in hexavalent chromium detoxification
文献类型： 外文期刊
作者： Zhang, Wenhui 1 ; Dong, Ruonan 1 ; Wang, Lulu 1 ; Wang, Guanhua 1 ; Xue, Zhenglong 1 ; Sui, Wenjie 2 ; Jia, Hongyu 3 ; Si, Chuanling 1 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll Light Ind Sci & Engn, State Key Lab Biobased Fiber Mfg Technol, Tianjin Key Lab Pulp & Paper,China Light Ind Key L, Tianjin 300457, Peoples R China
2.Tianjin Univ Sci & Technol, Coll Food Sci & Engn, State Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China
3.Shandong Acad Agr Sci, Jinan 250132, Shandong, Peoples R China
4.TEDA, 29 13th Ave, Tianjin 300457, Peoples R China
关键词： Lignin; N-doped lignin-derived carbon nanospheres; Pd-Zn alloy nanoclusters catalysts
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）
ISSN： 0141-8130
年卷期： 2023 年 244 卷
页码：
收录情况： SCI
摘要： As a renewable and low-cost biomacromolecule with high aromaticity and carbon content, lignin is a promising raw material for preparation of versatile carbon materials. Herein, we present a facile one-pot approach to prepare Pd-Zn alloy nanocluster catalysts supported on N-doped lignin-derived nanolayer carbon through facile pyrolysis of melamine-mixed lignin-Pd-Zn complex. The dispersion of the Pd-Zn alloy nanoclusters could be effectively modulated by varying the addition of melamine and the molar ratio of Pd and Zn salts. Pd-Zn alloy nanocluster catalysts (Pd-Zn29@N10C) with ultra-small particle size (about 0.47 nm) were prepared when 10 times of melamine (relative to lignin weight) was added and the molar ratio of Pd and Zn salts was 1:29. Thereby, the catalyst presented superior catalytic activity for reduction of Cr(VI) to harmfulless Cr(III), significantly better than the two references Zn@N10C (without Pd addition) and Pd-Zn29@C (without N doping), as well as the commercial Pd/C. In addition, thanks to the strong anchoring of the Pd-Zn alloy on the N-doped nanolayer support, the Pd-Zn29@N10C catalysts also exhibited good reusability. Consequently, the current study provides a straightforward and feasible method for producing highly dispersed Pd-Zn alloy nanoclusters by lignin coordination, and further demonstrates its excellent applicability in hexavalent chromium reduction.
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