ZnO nanoflowers with single crystal structure towards enhanced gas sensing and photocatalysis

2015 ◽  
Vol 17 (45) ◽  
pp. 30300-30306 ◽  
Author(s):  
Sha Zhang ◽  
Hsueh-Shih Chen ◽  
Katarzyna Matras-Postolek ◽  
Ping Yang
Keyword(s):  
Crystal Structure ◽  
Graphene Oxide ◽  
Single Crystal ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Photocatalytic Performance ◽  
Gas Sensing ◽  
High Crystallinity ◽  
Reduced Graphene ◽  
Average Size

Single crystal ZnO nanoflowers composed of small ZnO nanoparticles with high crystallinity and grown along the {100} facet with an average size of 60 nm have a much better gas sensing response. ZnO–reduced graphene oxide (RGO) composites showed enhanced photocatalytic performance.

SYNTHESIS OF ZnO NANOPARTICLES-REDUCED GRAPHENE OXIDE COMPOSITES AND THEIR INTRINSIC GAS SENSING PROPERTIES

2014 ◽  
Vol 21 (06) ◽  
pp. 1450086 ◽  
Author(s):  
ABU SADAT MOHAMMAD IFTEKHAR UDDIN ◽  
DUY-THACH PHAN ◽  
GWIY-SANG CHUNG
Keyword(s):  
Crystal Structure ◽  
Electron Microscopy ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Gas Sensing ◽  
Preferential Attachment ◽  
Zno Nps ◽  
Reduced Graphene ◽  
Reducing Gases

A ZnO nanoparticles (NPs)/reduced graphene oxide (rGO) composite was fabricated via a simple one-step solvothermal method with graphene oxide (GO) and Zn ( NO 3)2 ⋅ 6 H 2 O as the precursors. The morphology, crystal structure and optical properties of the synthesized materials were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Raman spectroscopy and photoluminescence (PL) spectroscopy. The synthesized composite exhibited rGO layers assorted with tiny ZnO NPs. rGO supposedly acted as a template in the solvothermal process, that may promote the preferential attachment of ZnO NPs and prevented the agglomeration of ZnO NPs in the synthesized composite. It was also found that the electrical properties of the composite improved markedly with bare ZnO NPs, without significantly changing the morphology and crystal structure of the ZnO NPs. The main aim of this research is to develop an efficient sensor and to understand the effect of graphene in sensing characteristics. The synthesized composite was exposed to H 2, CO and C 2 H 2 gases to confirm its feasibility for gas sensing, and the results showed preferential detection of reducing gases at low temperature.

Reduced graphene oxide decorated with CuO–ZnO hetero-junctions: towards high selective gas-sensing property to acetone

2014 ◽  
Vol 2 (43) ◽  
pp. 18635-18643 ◽  
Author(s):  
Chao Wang ◽  
Junwu Zhu ◽  
Shiming Liang ◽  
Huiping Bi ◽  
Qiaofeng Han ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Gas Sensing ◽  
Ternary Composite ◽  
Sensing Properties ◽  
Reduced Graphene

The CuO–ZnO/rGO ternary composite is successfully prepared, in which valid p–n junctions exist between CuO and ZnO nanoparticles with the aid of rGO sheets. The presence of p–n junctions enables such a composite to possess outstanding sensing properties to acetone.

Enhanced gas sensing and photocatalytic activity of reduced graphene oxide loaded TiO2 nanoparticles

2021 ◽  
pp. 138897
Author(s):  
Suresh Sagadevan ◽  
J. Anita Lett ◽  
Getu Kassegn Weldegebrieal ◽  
Md Rokon ud Dowla Biswas ◽  
Won Chun Oh ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene

scholarly journals Reduced graphene oxide for fiber-optic toluene gas sensing

2016 ◽  
Vol 24 (25) ◽  
pp. 28290 ◽  
Author(s):  
Yi Xiao ◽  
Jianhui Yu ◽  
Long Shun ◽  
Shaozao Tan ◽  
Xiang Cai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Fiber Optic ◽  
Gas Sensing ◽  
Reduced Graphene

Polymer Foam-Supported Chemically Reduced Graphene Oxide Conductive Networks for Gas Sensing

2018 ◽  
Vol 18 (4) ◽  
pp. 2965-2970 ◽  
Author(s):  
Jiajia Song ◽  
Yanyan Wang ◽  
Feng Zhang ◽  
Yan Ye ◽  
Yanhua Liu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Polymer Foam ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide

scholarly journals Simple synthesis of ZnO nanoparticles on N-doped reduced graphene oxide for the electrocatalytic sensing of l-cysteine

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35004-35011 ◽  
Author(s):  
Suling Yang ◽  
Gang Li ◽  
Chen Qu ◽  
Guifang Wang ◽  
Dan Wang
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Simple Synthesis ◽  
Zno Nanoparticle ◽  
Reduced Graphene ◽  
One Step

A new kind of ZnO nanoparticle/N-doped reduced graphene oxide nanocomposite (ZnONPs/N-rGO) was synthesized through a low temperature, low-cost and one step hydrothermal process.

Study on gas sensing of reduced graphene oxide/ZnO thin film at room temperature

2017 ◽  
Vol 240 ◽  
pp. 870-880 ◽  
Author(s):  
Yong Zhou ◽  
Xiaogang Lin ◽  
Yang Wang ◽  
Guoqing Liu ◽  
Xiangyi Zhu ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Thin Film ◽  
Reduced Graphene
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