Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Electric-field-assisted facile synthesis of metal nanoparticles
AU - Zhou, Qi
AU - Zhang, Jingjing
AU - Saba, Tony
AU - Yue, Zhen
AU - Li, Wei
AU - Anderson, James A.
AU - Wang, Xiaodong
PY - 2019/1/7
Y1 - 2019/1/7
N2 - The use of electric field represents a promising strategy to overcome the existing challenges in synthesizing metal nanoparticles. A facile and clean method for the preparation of water-soluble metal nanoparticles with a narrow particle distribution is reported here based on the electric-field-driven phase-inversion procedure. Bioderived chitosan was used to stabilize the metal nanoparticles, and formic acid was employed as both a solvent (for the polymer) and a reductant (for the metal). The electric field has been characterized to modify the hydrogen bonds of the chitosan and promote the stabilization and reduction of metal nanoparticles. Taking silver as an example, the nanoparticles obtained lay in the range of 2–6 nm with a mean size of 3.4 nm. The produced chitosan/Ag nanocomposites can be used in homogeneous (water-soluble) form for catalysis and heterogeneous form (as a solid film) for antibiosis. Exceptional performance in the selective regeneration of cofactor NADH (turnover frequency (TOF) = 582 h–1) and an improved antibacterial performance were attained. Successful preparation of metallic Cu, Au, and Pt nanoparticles (∼1–2 nm) confirms the universality of this method for synthesizing functional nanomaterials with various potential applications.
AB - The use of electric field represents a promising strategy to overcome the existing challenges in synthesizing metal nanoparticles. A facile and clean method for the preparation of water-soluble metal nanoparticles with a narrow particle distribution is reported here based on the electric-field-driven phase-inversion procedure. Bioderived chitosan was used to stabilize the metal nanoparticles, and formic acid was employed as both a solvent (for the polymer) and a reductant (for the metal). The electric field has been characterized to modify the hydrogen bonds of the chitosan and promote the stabilization and reduction of metal nanoparticles. Taking silver as an example, the nanoparticles obtained lay in the range of 2–6 nm with a mean size of 3.4 nm. The produced chitosan/Ag nanocomposites can be used in homogeneous (water-soluble) form for catalysis and heterogeneous form (as a solid film) for antibiosis. Exceptional performance in the selective regeneration of cofactor NADH (turnover frequency (TOF) = 582 h–1) and an improved antibacterial performance were attained. Successful preparation of metallic Cu, Au, and Pt nanoparticles (∼1–2 nm) confirms the universality of this method for synthesizing functional nanomaterials with various potential applications.
KW - Chitosan
KW - Nanocomposites
KW - Noble metal
KW - NADH
KW - Catalysis
U2 - 10.1021/acssuschemeng.8b04927
DO - 10.1021/acssuschemeng.8b04927
M3 - Journal article
VL - 7
SP - 1271
EP - 1278
JO - ACS Sustainable Chemistry and Engineering
JF - ACS Sustainable Chemistry and Engineering
SN - 2168-0485
IS - 1
ER -