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Sökning: onr:"swepub:oai:DiVA.org:liu-117212" > Cobalt oxide magnet...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003828naa a2200409 4500
001oai:DiVA.org:liu-117212
003SwePub
008150421s2015 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1172122 URI
0247 a https://doi.org/10.1007/s12648-014-0594-32 DOI
040 a (SwePub)liu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Ali, A.u Riphah Int University, Pakistan4 aut
2451 0a Cobalt oxide magnetic nanoparticles-chitosan nanocomposite based electrochemical urea biosensor
264 c 2014-09-24
264 1b Springer Verlag (Germany),c 2015
338 a print2 rdacarrier
500 a Funding Agencies|King Saud University, Deanship of Scientific Research, College of Science Research Center
520 a In this study, a potentiometric urea biosensor has been fabricated on glass filter paper through the immobilization of urease enzyme onto chitosan/cobalt oxide (CS/Co3O4) nanocomposite. A copper wire with diameter of 500 mu m is attached with nanoparticles to extract the voltage output signal. The shape and dimensions of Co3O4 magnetic nanoparticles are investigated by scanning electron microscopy and the average diameter is approximately 80-100 nm. Structural quality of Co3O4 nanoparticles is confirmed from X-ray powder diffraction measurements, while the Raman spectroscopy has been used to understand the chemical bonding between different atoms. The magnetic measurement has confirmed that Co3O4 nanoparticles show ferromagnetic behavior, which could be attributed to the uncompensated surface spins and/or finite size effects. The ferromagnetic order of Co3O4 nanoparticles is raised with increasing the decomposition temperature. A physical adsorption method is adopted to immobilize the surface of CS/Co3O4 nanocomposite. Potentiometric sensitivity curve has been measured over the concentration range between 1 x 10(-4) and 8 x 10(-2) M of urea electrolyte solution revealing that the fabricated biosensor holds good sensing ability with a linear slope curve of similar to 45 mV/decade. In addition, the presented biosensor shows good reusability, selectivity, reproducibility and resistance against interferers along with the stable output response of similar to 12 s.
650 7a TEKNIK OCH TEKNOLOGIERx Elektroteknik och elektronik0 (SwePub)2022 hsv//swe
650 7a ENGINEERING AND TECHNOLOGYx Electrical Engineering, Electronic Engineering, Information Engineering0 (SwePub)2022 hsv//eng
653 a Potentiometric biosensors; Metal oxide; Nanoparticles and urea sensing
7001 a Israr-Qadir, Muhammadu Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan4 aut0 (Swepub:liu)muhqa30
7001 a Wazir, Z.u Riphah Int University, Pakistan4 aut
7001 a Tufail, M.u Riphah Int University, Pakistan4 aut
7001 a Ibupoto, Zafar Hussainu Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan4 aut0 (Swepub:liu)zafib04
7001 a Jamil-Rana, Sadafu Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan4 aut0 (Swepub:liu)sadra54
7001 a Atif, M.u King Saud University, Saudi Arabia; National Institute Lasers and Optron, Pakistan4 aut
7001 a Khan, S. A.u National Centre Phys, Pakistan4 aut
7001 a Willander, Magnusu Linköpings universitet,Fysik och elektroteknik,Tekniska högskolan4 aut0 (Swepub:liu)magwi72
7102 a Riphah Int University, Pakistanb Fysik och elektroteknik4 org
7730 t Indian Journal of Physicsd : Springer Verlag (Germany)g 89:4, s. 331-336q 89:4<331-336x 0973-1458x 0974-9845
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-117212
8564 8u https://doi.org/10.1007/s12648-014-0594-3

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