Starch-supported gold nanoparticles and their use in 4-nitrophenol reduction
نویسندگان
چکیده
منابع مشابه
Gold nanoparticles supported on titania for the reduction of p-nitrophenol
Supported gold nanoparticles on titania have been prepared using the deposition-precipitation method at several pH levels. The effects of pH on gold loading, particle size and particle size distribution are studied, both below and above the isoelectric point of TiO2. The effects of adjusting the pH before and after the addition of the support to gold chloride solution are also investigated. Gol...
متن کاملCatechin-capped gold nanoparticles: green synthesis, characterization, and catalytic activity toward 4-nitrophenol reduction
An eco-friendly approach is described for the green synthesis of gold nanoparticles using catechin as a reducing and capping agent. The reaction occurred at room temperature within 1 h without the use of any external energy and an excellent yield (99%) was obtained, as determined by inductively coupled plasma mass spectrometry. Various shapes of gold nanoparticles with an estimated diameter of ...
متن کاملGreen synthesis of gold nanoparticles using aspartame and their catalytic activity for p-nitrophenol reduction
We demonstrated a facile and environmental-friendly approach to form gold nanoparticles through the reduction of HAuCl4 by aspartame. The single-crystalline structure was illustrated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The energy-dispersive X-ray spectroscopy (EDS) and Fourier transform infrared (FTIR) results indicated that aspartame played a pivotal role in ...
متن کاملIn situ recyclable gold nanoparticles using CO2-switchable polymers for catalytic reduction of 4-nitrophenol.
CO(2)-switchable gold nanoparticles (AuNPs) were prepared by functionalizing AuNPs with CO(2)-switchable polymers. Their dispersion-re-dispersion in and separation from aqueous solution can be easily and reproducibly adjusted by CO(2) bubbling through and removal from the solution, enabling unique CO(2) controllable, efficient in situ recycling of NPs. As compared to non-functionalized AuNPs, t...
متن کاملCatalytic reduction of 4-nitrophenol with gold nanoparticles synthesized by caffeic acid
In this study, various concentrations of caffeic acid (CA) were used to synthesize gold nanoparticles (CA-AuNPs) in order to evaluate their catalytic activity in the 4-nitrophenol reduction reaction. To facilitate catalytic activity, caffeic acid was removed by centrifugation after synthesizing CA-AuNPs. The catalytic activity of CA-AuNPs was compared with that of centrifuged CA-AuNPs (cf-CA-Au...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Saudi Chemical Society
سال: 2017
ISSN: 1319-6103
DOI: 10.1016/j.jscs.2015.11.001