Sökning: onr:"swepub:oai:DiVA.org:uu-320156" > On-chip growth of p...
Fältnamn | Indikatorer | Metadata |
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000 | 03472naa a2200361 4500 | |
001 | oai:DiVA.org:uu-320156 | |
003 | SwePub | |
008 | 170416s2017 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3201562 URI |
024 | 7 | a https://doi.org/10.1016/j.ijhydene.2017.05.1352 DOI |
040 | a (SwePub)uu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Jiao, Mingzhiu Uppsala universitet,Mikrosystemteknik4 aut0 (Swepub:uu)minji258 |
245 | 1 0 | a On-chip growth of patterned ZnO nanorod sensors with PdO decoration for enhancement of hydrogen-sensing performance |
264 | 1 | b Elsevier BV,c 2017 |
338 | a print2 rdacarrier | |
520 | a In this study, we used a low-temperature hydrothermal technique to fabricate arrays of sensors with ZnO nanorods grown on-chip. The sensors on the glass substrate then were sputter decorated with Pd at thicknesses of 2, 4, and 8 nm and annealed at 650 °C in air for an hour. Scanning electron microscopy, high resolution transmission microscopy, X-ray diffraction, and surface analysis by X-ray photoelectron spectroscopy characterization demonstrated that decoration of homogenous PdO nanoparticles on the surface of ZnO nanorods had been achieved. The sensors were tested against three reducing gases, namely hydrogen, ethanol, and ammonia, at 350, 400, and 450 °C. The ZnO nanorods decorated with PdO particles from the 2 and 4 nm layers showed the highest responses to H2 at 450 and 350 °C, respectively. These samples also generally exhibited better selectivity for hydrogen than for ethanol and ammonia at the same concentrations and at all tested temperatures. However, the ZnO nanorods decorated with PdO particles from the 8 nm layer showed a reverse sensing behaviour compared with the first two. The sensing mechanism behind these phenomena is discussed in the light of the spillover effect of hydrogen in contact with the PdO particles as well as the negative competition of the PdO thin film formed between the sensor electrodes during sputter decoration, Pd-Zn heterojunction that forms at high temperature and thus influences the conductivity of the ZnO nanorods. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Materialteknikx Annan materialteknik0 (SwePub)205992 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Other Materials Engineering0 (SwePub)205992 hsv//eng |
653 | a Hydrogen-sensing at high temperature; On-chip hydrothermal growth; ZnO nanorods; Sputter-decoration; PdO nanoparticles | |
700 | 1 | a Nguyen, Van Duyu Hanoi Univ Sci & Technol, ITIMS, Hanoi, Vietnam4 aut |
700 | 1 | a Nguyen, Viet Chienu Hanoi Univ Sci & Technol, ITIMS, Hanoi, Vietnam4 aut |
700 | 1 | a Nguyen, Duc Hoau Hanoi Univ Sci & Technol, ITIMS, Hanoi, Vietnam4 aut |
700 | 1 | a Nguyen, Van Hieuu Hanoi Univ Sci & Technol, ITIMS, Hanoi, Vietnam4 aut |
700 | 1 | a Hjort, Klas,d 1964-u Uppsala universitet,Mikrosystemteknik4 aut0 (Swepub:uu)klashjor |
700 | 1 | a Nguyen, Hugo,d 1955-u Uppsala universitet,Mikrosystemteknik4 aut0 (Swepub:uu)hugonguy |
710 | 2 | a Uppsala universitetb Mikrosystemteknik4 org |
773 | 0 | t International journal of hydrogen energyd : Elsevier BVg 42:25, s. 16294-16304q 42:25<16294-16304x 0360-3199x 1879-3487 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-320156 |
856 | 4 8 | u https://doi.org/10.1016/j.ijhydene.2017.05.135 |
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