02630nas a2200241   4500008004100000022001400041245009400055210006900149260000800218300001200226490000700238520179800245100002902043700001602072700002602088700002502114700001802139700002502157700003102182700002802213700002802241856011902269       2023                        eng d  a0022-246100aGas sensors and factors influencing sensing mechanism with a special focus on MOS sensors0 aGas sensors and factors influencing sensing mechanism with a spe  cJAN  a559-5820 v583 a<p>
	Industrialization and its progress are very important for the economy and to move towards prosperity, stimulating innovation and creating jobs. Nonetheless, industrialization has negative impacts, if not done judiciously, such as pollution, increased greenhouse gas emissions, and global warming. Therefore, amenity-with-security is of fundamental significance in a new and dynamic lifestyle. A gas sensor is one of the crucial devices for monitoring and subsequently preserving the clean atmosphere among a number of other safety technologies. In-depth assessments of gas sensors and their necessity in the environment (air) pollution are provided in the current review. With a special emphasis on metal oxide semiconductor (MOS)-based gas sensors, the review includes a thorough study of gas sensors and the factors relating to sensing mechanisms. It not only describes the basic concepts and brief history of gas sensors, but also highlights the schemes responsible for improving the gas sensing properties and state-of-art literature review. These schemes include (1) surface engineering/morphological tuning and (2) bulk and surface doping. To keep scientific rigour and in-depth analyses, this review focuses on these two schemes only. In the doping area, the emphasis is given on graphene loading, decorated with nanoparticles of noble metals, spillover mechanism, and heterojunction (p-n, n-n, and p-p) formation. The conclusion summarizes the most optimized MOS gas sensors with enhanced gas sensing capabilities. The emphasis is given to formulate the article in such a way that it will be useful for the beginners who wish to explore the gas sensor research field, as well as to the established researchers to further improve the sensing capabilities of MOS gas sensors.</p>
1 aNadargi, Digambar, Y. Y.1 aUmar, Ahmad1 aNadargi, Jyoti, D. D.1 aLokare, Smita, A. A.1 aAkbar, Sheikh1 aMulla, Imtiaz, S. S.1 aSuryavanshi, Sharad, S. S.1 aBhandari, Nagesh, L. L.1 aChaskar, Manohar, G. G.  uhttps://library.ncl.res.in/content/gas-sensors-and-factors-influencing-sensing-mechanism-special-focus-mos-sensors02037nas a2200229   4500008004100000022001400041245008500055210006900140260000800209300000900217490000700226520126700233100002601500700002301526700002601549700002301575700002201598700001601620700003101636700002801667856011201695       2023                        eng d  a0957-452200aGreen synthesis of GO-loaded Ag/ZnO nanocomposites for methyl orange degradation0 aGreen synthesis of GOloaded AgZnO nanocomposites for methyl oran  cJUL  a15680 v343 a<p>
	Nature is a perfect laboratory for creating novel nanomaterials for a variety of applications. A robust green synthesis approach to GO-loaded Ag/ZnO nanocomposite materials using medicinal plant extraction and their potential application in methyl orange dye degradation are reported. The straightforward technique employs zinc and silver nitrate precursors in an aqueous solution of medicinal plant extract, causing the precipitation process. Prior to photocatalytic investigations, the physico-chemical properties of the material are analysed using TG-DTA, XRD, FE-SEM, TEM, EDAX and BET. The developed material showcase hexagonal wurtzite structure of ZnO, with face-centered-cubic phase of Ag and AgCl. All the samples exhibit aggregated, irregular rounded grains, as expected in the precipitation synthesis process. Pristine ZnO showed 15.5% degradation efficiency towards methyl orange, which was further improved by doping Ag from 0.5 to 2 mol%. The catalyst with 1 mol% Ag doping resulted in the better photocatalytic activity (26.30%), which has again improved by loading the GO (27.46%). The outcome of this study provides the new insights to GO-loaded Ag/ZnO nanocomposites by green synthesis route, in view of photocatalytic applications.</p>
1 aNadargi, Digambar, Y.1 aNadargi, Jyoti, D.1 aTamboli, Mohaseen, S.1 aTamboli, Asiya, M.1 aMulla, Imitaz, S.1 aUmar, Ahmad1 aTruong, Nguyen, Tam Nguyen1 aSuryavanshi, Sharad, S.  uhttps://library.ncl.res.in/content/green-synthesis-go-loaded-agzno-nanocomposites-methyl-orange-degradation