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[期刊论文]

Cu2+-Doped SnO2 Nanograin/Polypyrrole Nanospheres with Synergic Enhanced Properties for Ultrasensitive Room-Temperature H2S Gas Sensing

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author:

Shu, Jian (Shu, Jian.) [1] | Qiu, Zhenli (Qiu, Zhenli.) [2] | Lv, Shuzhen (Lv, Shuzhen.) [3] | Unfold

Indexed by:

EI Scopus SCIE

Abstract:

The organic inorganic nanohybrids are emerging as one of the most attractive sensing materials in the area of gas sensors and usually exhibit some advanced properties because of synergetic/complementary effects between organic molecules and inorganic components. This work demonstrates a novel class of organic-inorganic nanohybrids, Cu2+-doped SnO2 nanograin/poly pyrrole nanospheres, for the sensitive room-temperature H2S gas sensing. Doping Cu2+ in SnO2 nanograins remarkably enhances the surface potential barrier by tailoring surface defects. After polymerizing pyrrole surrounded nanograins in aqueous media to form the organic-inorganic nanohybrids, the resulting nano-heterojunctions further improve the sensitivity. Additionally, the nano hybrids-based sensor provides high surface area and abounding reaction sites to accelerate gas diffusion and adsorption as well as the electron transfer. Compare with pristine SnO2 nanograins alone, the sensitivity of using the nanohybrids increases 7 times for the detection of 50-ppm of H2S. The response and recovery rate can increase 27 and 22 times at room temperature, respectively. Significantly, this work provides an attractive material for the real-time monitoring of H2S, whereas the insights into organic-inorganic composite interactions within the sensing mechanism may pave the way for designing functional materials with tailored properties.

Community:

  • [ 1 ] [Shu, Jian]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Qiu, Zhenli]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Lv, Shuzhen]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Zhang, Kangyao]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Tang, Dianping]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China

Reprint 's Address:

  • 唐点平

    [Tang, Dianping]Fuzhou Univ, Key Lab Analyt Sci Food Safety & Biol MOE & Fujia, State Key Lab Photocatalysis Energy & Environm, Dept Chem, Fuzhou 350116, Fujian, Peoples R China

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Source :

ANALYTICAL CHEMISTRY

ISSN: 0003-2700

Year: 2017

Issue: 20

Volume: 89

Page: 11135-11142

6 . 0 4 2

JCR@2017

6 . 8 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:226

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 118

SCOPUS Cited Count: 120

30 Days PV: 3

Online/Total:2/10894164
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