Enhancement of gas-sensing abilities in p-type ZnWO4 by local modification of Pt nanoparticles
Copyright © 2016 Elsevier B.V. All rights reserved..
Semiconducting ZnWO4 nanorods and nanoparticles are synthesized by adjusting the composition of the reaction solvent. The effect of Pt nanoparticles on the sensing property of ZnWO4 nanostructures were evaluated and investigated systemically in the first time. Pure ZnWO4 nanostructures exhibited the highest sensitivity towards ethanol against Volatile Organic Compounds (methanol, acetone). Their lower limit of detection can reach 100 ppm for ethanol at temperature of about 23 °C. Pt nanoparticles play a positive effect in improving the sensitivity of ZnWO4 towards H2. After loading of Pt nanoparticles, the response of ZnWO4 nanorods towards 1.5% H2 increased from 1.4 to 12.5 at room temperature. In addition, the structure exhibits more significant promoting effect than nanoparticle structure because of their different microstructure and exposed crystallographic planes. Furthermore, Pt nanoparticles could eliminate the effect of ambient humidity to avoid the baseline shift. The gas sensing mechanism of PtZnWO4 nanocomposites is discussed detailedly at the same time. The generation of Schottky barrier at the interface between metal and semiconductor, as well as the formation of PtO on the surface of Pt nanoparticles contribute to the enhanced sensing response.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2016 |
|---|---|
| Erschienen: |
2016 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:927 |
|---|---|
| Enthalten in: |
Analytica chimica acta - 927(2016) vom: 13. Juli, Seite 107-16 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Li, Cong [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
Ethanol |
|---|
| Anmerkungen: |
Date Completed 04.01.2018 Date Revised 04.01.2018 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1016/j.aca.2016.04.050 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM260851116 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM260851116 | ||
| 003 | DE-627 | ||
| 005 | 20231224194304.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231224s2016 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1016/j.aca.2016.04.050 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n0869.xml |
| 035 | |a (DE-627)NLM260851116 | ||
| 035 | |a (NLM)27237843 | ||
| 035 | |a (PII)S0003-2670(16)30523-2 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Li, Cong |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Enhancement of gas-sensing abilities in p-type ZnWO4 by local modification of Pt nanoparticles |
| 264 | 1 | |c 2016 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 04.01.2018 | ||
| 500 | |a Date Revised 04.01.2018 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Copyright © 2016 Elsevier B.V. All rights reserved. | ||
| 520 | |a Semiconducting ZnWO4 nanorods and nanoparticles are synthesized by adjusting the composition of the reaction solvent. The effect of Pt nanoparticles on the sensing property of ZnWO4 nanostructures were evaluated and investigated systemically in the first time. Pure ZnWO4 nanostructures exhibited the highest sensitivity towards ethanol against Volatile Organic Compounds (methanol, acetone). Their lower limit of detection can reach 100 ppm for ethanol at temperature of about 23 °C. Pt nanoparticles play a positive effect in improving the sensitivity of ZnWO4 towards H2. After loading of Pt nanoparticles, the response of ZnWO4 nanorods towards 1.5% H2 increased from 1.4 to 12.5 at room temperature. In addition, the structure exhibits more significant promoting effect than nanoparticle structure because of their different microstructure and exposed crystallographic planes. Furthermore, Pt nanoparticles could eliminate the effect of ambient humidity to avoid the baseline shift. The gas sensing mechanism of PtZnWO4 nanocomposites is discussed detailedly at the same time. The generation of Schottky barrier at the interface between metal and semiconductor, as well as the formation of PtO on the surface of Pt nanoparticles contribute to the enhanced sensing response | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Ethanol | |
| 650 | 4 | |a Gas sensor | |
| 650 | 4 | |a Highly sensitivity | |
| 650 | 4 | |a Hydrogen | |
| 650 | 4 | |a Pt-ZnWO(4) | |
| 700 | 1 | |a Liang, Yanqin |e verfasserin |4 aut | |
| 700 | 1 | |a Mao, Jing |e verfasserin |4 aut | |
| 700 | 1 | |a Ling, Lan |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Zhenduo |e verfasserin |4 aut | |
| 700 | 1 | |a Yang, Xianjin |e verfasserin |4 aut | |
| 700 | 1 | |a Zhu, Shengli |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Zhaoyang |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Analytica chimica acta |d 1966 |g 927(2016) vom: 13. Juli, Seite 107-16 |w (DE-627)NLM000012637 |x 1873-4324 |7 nnns |
| 773 | 1 | 8 | |g volume:927 |g year:2016 |g day:13 |g month:07 |g pages:107-16 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1016/j.aca.2016.04.050 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 927 |j 2016 |b 13 |c 07 |h 107-16 | ||