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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50709

Title: Synthesis and enhanced humidity detection response of nanoscale Au-particle-decorated ZnS spheres
Authors: Yuan-Chang Liang
S. L. Liu
Contributors: 國立臺灣海洋大學:材料工程研究所
Keywords: Nanoparticle
Structure
Sulfide
Surface modification
Date: 2014-12
Issue Date: 2018-10-22T02:55:54Z
Publisher: Nanoscale Research Letters
Abstract: Abstract: We successfully prepared Au-nanoparticle-decorated ZnS (ZnS-Au) spheres by sputtering Au ultrathin films on surfaces of hydrothermally synthesized ZnS spheres and subsequently postannealed the samples in a high-vacuum atmosphere. The Au nanoparticles were distributed on ZnS surfaces without substantial aggregation. The Au nanoparticle diameter range was 5 to 10 nm. Structural information showed that the surface of the annealed ZnS-Au spheres became more irregular and rough. A humidity sensor constructed using the Au-nanoparticle-decorated ZnS spheres demonstrated a substantially improved response to the cyclic change in humidity from 11% relative humidity (RH) to 33% to 95% RH at room temperature. The improved response was associated with the enhanced efficiency of water molecule adsorption onto the surfaces of the ZnS because of the surface modification of the ZnS spheres through noble-metal nanoparticle decoration.
Relation: 9(1)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50709
Appears in Collections:[材料工程研究所] 期刊論文

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