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Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen.
ACS Appl Mater Interfaces 2016; 8(16):10413-21AA

Abstract

We report for the first time the successful synthesis of palladium (Pd) nanoparticle (NP)-decorated tungsten trioxide (WO3) nanoneedles (NNs) via a two-step aerosol-assisted chemical vapor deposition approach. Morphological, structural, and elemental composition analysis revealed that a Pd(acac)2 precursor was very suitable to decorate WO3 NNs with uniform and well-dispersed PdO NPs. Gas-sensing results revealed that decoration with PdO NPs led to an ultrasensitive and selective hydrogen (H2) gas sensor (sensor response peaks at 1670 at 500 ppm of H2) with low operating temperature (150 °C). The response of decorated NNs is 755 times higher than that of bare WO3 NNs. Additionally, at a temperature near that of the ambient temperature (50 °C), the response of this sensor toward the same concentration of H2 was 23, which is higher than that of some promising sensors reported in the literature. Finally, humidity measurements showed that PdO/WO3 sensors displayed low-cross-sensitivity toward water vapor, compared to bare WO3 sensors. The addition of PdO NPs helps to minimize the effect of ambient humidity on the sensor response.

Authors+Show Affiliations

MINOS-EMaS, Universitat Rovira i Virgili , Avenida Països Catalans 26, 43007 Tarragona, Spain.MINOS-EMaS, Universitat Rovira i Virgili , Avenida Països Catalans 26, 43007 Tarragona, Spain. Laboratoire des Sciences de l'Information et des Systèmes (LSIS), Aix-Marseille University , 13284 Marseille, France.Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom.Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom.SIX Research Centre, Brno University of Technology , Technická 10, Brno CZ-61600, Czech Republic.MINOS-EMaS, Universitat Rovira i Virgili , Avenida Països Catalans 26, 43007 Tarragona, Spain.Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom.Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom. GC University , Katchery Road, Lahore 54000, Pakistan.Department of Solid-State Physics, Jožef Stefan Institute , Jamova cesta 39, 1000 Ljubljana, Slovenia.Materia Nova, Univeristé de Mons , Parc Initialis, Avenue N. Copernic, 1, B-7000 Mons, Belgium.Department of Chemistry, University College London , 20 Gordon Street, London WC1H 0AJ, United Kingdom.MINOS-EMaS, Universitat Rovira i Virgili , Avenida Països Catalans 26, 43007 Tarragona, Spain.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

27043301

Citation

Annanouch, Fatima E., et al. "Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen." ACS Applied Materials & Interfaces, vol. 8, no. 16, 2016, pp. 10413-21.
Annanouch FE, Haddi Z, Ling M, et al. Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen. ACS Appl Mater Interfaces. 2016;8(16):10413-21.
Annanouch, F. E., Haddi, Z., Ling, M., Di Maggio, F., Vallejos, S., Vilic, T., ... Llobet, E. (2016). Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen. ACS Applied Materials & Interfaces, 8(16), pp. 10413-21. doi:10.1021/acsami.6b00773.
Annanouch FE, et al. Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen. ACS Appl Mater Interfaces. 2016 04 27;8(16):10413-21. PubMed PMID: 27043301.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Aerosol-Assisted CVD-Grown PdO Nanoparticle-Decorated Tungsten Oxide Nanoneedles Extremely Sensitive and Selective to Hydrogen. AU - Annanouch,Fatima E, AU - Haddi,Z, AU - Ling,M, AU - Di Maggio,F, AU - Vallejos,S, AU - Vilic,T, AU - Zhu,Y, AU - Shujah,T, AU - Umek,P, AU - Bittencourt,C, AU - Blackman,C, AU - Llobet,E, Y1 - 2016/04/18/ PY - 2016/4/5/entrez PY - 2016/4/5/pubmed PY - 2016/4/5/medline KW - aerosol-assisted CVD KW - gas sensor KW - nanoneedles KW - nanoparticles SP - 10413 EP - 21 JF - ACS applied materials & interfaces JO - ACS Appl Mater Interfaces VL - 8 IS - 16 N2 - We report for the first time the successful synthesis of palladium (Pd) nanoparticle (NP)-decorated tungsten trioxide (WO3) nanoneedles (NNs) via a two-step aerosol-assisted chemical vapor deposition approach. Morphological, structural, and elemental composition analysis revealed that a Pd(acac)2 precursor was very suitable to decorate WO3 NNs with uniform and well-dispersed PdO NPs. Gas-sensing results revealed that decoration with PdO NPs led to an ultrasensitive and selective hydrogen (H2) gas sensor (sensor response peaks at 1670 at 500 ppm of H2) with low operating temperature (150 °C). The response of decorated NNs is 755 times higher than that of bare WO3 NNs. Additionally, at a temperature near that of the ambient temperature (50 °C), the response of this sensor toward the same concentration of H2 was 23, which is higher than that of some promising sensors reported in the literature. Finally, humidity measurements showed that PdO/WO3 sensors displayed low-cross-sensitivity toward water vapor, compared to bare WO3 sensors. The addition of PdO NPs helps to minimize the effect of ambient humidity on the sensor response. SN - 1944-8252 UR - https://www.unboundmedicine.com/medline/citation/27043301/Aerosol_Assisted_CVD_Grown_PdO_Nanoparticle_Decorated_Tungsten_Oxide_Nanoneedles_Extremely_Sensitive_and_Selective_to_Hydrogen_ L2 - https://dx.doi.org/10.1021/acsami.6b00773 DB - PRIME DP - Unbound Medicine ER -