title: Facile and green synthesis of cellulose nanocrystal-supported gold nanoparticles with superior catalytic activity.
abstract: The emphasis of science and technology shifts toward environmentally friendly and sustainable resources and processes. Herein, we report a facile, one-pot and green synthesis of biomaterial-supported gold nanoparticles (AuNPs) with superior catalytic activity. Cellulose nanocrystal (CNC)-supported AuNPs were prepared by heating the aqueous mixture of HAuCl4, CNCs and polyethylene glycol, avoiding toxic chemicals, extreme condition and complicated procedure. The resultant CNC-supported AuNPs exhibited catalytic activities for the reduction of 4-nitrophenol by sodium borohydride. The maximum apparent rate constant reached 1.47×10(-2)s(-1), and the turnover frequency reached 641h(-1). The superior catalytic performance can be ascribed to the large amount of highly dispersed AuNPs with few nanometers in size which are loaded on CNCs. About 90% of the AuNPs are smaller than 10nm, and nearly 60% of the AuNPs are smaller than 5nm. The synthesis is eco-friendly, facile and low-cost, thus has great potential for industrial and medical applications.
authors.affiliation: Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Yan
authors.affiliation: Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, PR China.
authors.forename: Chang
authors.initials: C
authors.lastname: Chen
authors.affiliation: Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, PR China.
authors.forename: Ling
authors.initials: L
authors.lastname: Wang
authors.affiliation: Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200444, PR China; Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai 200072, PR China.
authors.forename: Dan
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Research Center for Composite Materials, Shanghai University, Shanghai 200444, PR China. Electronic address: aijun.li@shu.edu.cn.
authors.forename: Ai-Jun
authors.initials: AJ
authors.lastname: Li
authors.affiliation: Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, PR China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Yao
authors.affiliation: Nano Science and Technology Research Center, Shanghai University, Shanghai 200444, PR China. Electronic address: shiliyi@shu.edu.cn.
authors.forename: Li-Yi
authors.initials: LY
authors.lastname: Shi
mesh_terms: D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D060326:Chemistry Techniques, Synthetic; D006046:Gold / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods*; D006358:Hot Temperature; D053768:Metal Nanoparticles / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D009596:Nitrophenols / Q000737:chemistry; D010084:Oxidation-Reduction; D011092:Polyethylene Glycols / Q000737:chemistry
chemical_list: D009596:Nitrophenols; D011092:Polyethylene Glycols; D006046:Gold; D002482:Cellulose; C024836:4-nitrophenol
keywords: 4-Nitrophenol; Cellulose nanocrystals; Gold nanoparticles; Green synthesis; One-pot; Polyethylene glycol