Synthesis of Ag-Ag2S Janus nanoparticles supported on an environmentally benign cellulose template and their catalytic applications

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Title:	Synthesis of Ag-Ag2S Janus nanoparticles supported on an environmentally benign cellulose template and their catalytic applications
Authors:	戴帕克;Dutta, Dipanka;Hazarika, Rupjyoti;Dutta, Pallavi Dowarah;Goswami, Tridip;Sengupta, Pinaki;Dutta, Dipak Kumar
Contributors:	資訊電機學院電機工程學系
Keywords:	aqueous solutions;bamboos;Bambusa tulda;catalysts;catalytic activity;cellulose;coprecipitation;energy-dispersive X-ray analysis;nanoparticles;p-nitrophenol;scanning electron microscopy;silver;sodium hydroxide;sulfides;transmission electron microscopy;ultraviolet-visible spectroscopy;X-ray diffraction;X-ray photoelectron spectroscopy
Date:	2016-01-01
Issue Date:	2026-04-23 14:45:37 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： Synthesis of Ag–Ag 2 S Janus nanoparticles (JNP) by a one step co-precipitation technique using a NaOH–thiourea–urea aqueous solution has been reported. The NaOH in cellulose solution acted as the precipitant of Ag–Ag 2 S nanoparticles and environmentally benign cellulose was used as a template to promote the growth of nanoparticles. The cellulose was extracted from Bambusa tulda , a locally available bamboo species and was carried out by adopting a green approach using a combination of both chemical and biochemical treatment. The synthesized Ag–Ag 2 S JNP was characterized by UV-Visible spectroscopy, powder XRD, TEM, SEM-EDX and XPS analysis. The TEM study reveals that most of the Ag–Ag 2 S JNP were spherical in shape and fall in the size range of 10–15 nm. XRD analysis of the Ag–Ag 2 S JNP shows diffraction peaks for the (111), (200) and (220) planes of a face centered cubic Ag 0 crystal along with the characteristic peaks due to Ag 2 S, which provide evidence for the coexistence of Ag 2 S and Ag on the cellulose support. The method offers a facile and green pathway for the fabrication of Ag–Ag 2 S JNP and the synthesized Ag–Ag 2 S JNP were employed as a heterogeneous catalyst in a model reaction based on the reduction of p -nitrophenol to p -aminophenol. The metal nanocatalysts could be recycled and reused several times without significant loss of their catalytic activities. 出版日期： 2016-01-01 出處： RSC advances, 2016-01, Vol.6 (88), p.85173-85181 資源來源： Royal Society of Chemistry 識別號： ISSN: 2046-2069 識別號： EISSN: 2046-2069 識別號： DOI: 10.1039/C6RA16941D
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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