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Chemistry and Industry of Forest Products ›› 2019, Vol. 39 ›› Issue (4): 35-41.doi: 10.3969/j.issn.0253-2417.2019.04.005

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Preparation of Sliver Nanoparticles by Lignin Under Solar Light Irradiation

Qingtong ZHANG1,2,Xiaojing YUN1,2,Depeng YAN1,2,Mingfu LI1,2,Shuangfei WANG1,2,Douyong MIN1,2,*()   

  1. 1. College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
    2. Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning 530004, China
  • Received:2019-04-09 Online:2019-08-25 Published:2019-08-23
  • Contact: Douyong MIN E-mail:mindouyong@gxu.edu.cn
  • Supported by:


Bagasse Kraft black liquor lignin was used as raw material to prepare lignin nanoparticles(LNPs) which was stably dispersed in water. Then, LNPs were used as reductant and stabilizer to reduce Ag+ into Ag nanoparticles(AgNPs) under ambient solar light irradiation. The optimal reaction conditions for the synthesis of AgNPs were the concentration of AgNO3:25 mmol/L, the mass concentration of LNPs suspension:100 g/L, and the solar light irradiation time of 10 min with the solar intensity of (900±100) W/m2. Under the optimal conditions, the average size of the synthesized AgNPs was 15.3 nm. HRTEM and element mapping analysis showed that the synthesized AgNPs were entangled by lignin. The electronegative groups of lignin provided AgNPs an abundant negative surface charge with the Zata potential of -24 mV.The electronic doubly layer repulsion hindered the aggregation of AgNPs and stabilized AgNPs in water.

Key words: lignin nanoparticles, sliver nanoparticles, solar, catalysis

CLC Number: