J
Jayappa Manjanna
Researcher at Rani Channamma University, Belgaum
Publications - 87
Citations - 2574
Jayappa Manjanna is an academic researcher from Rani Channamma University, Belgaum. The author has contributed to research in topics: Chemistry & Ascorbic acid. The author has an hindex of 24, co-authored 73 publications receiving 1903 citations. Previous affiliations of Jayappa Manjanna include Iwate University & Bhabha Atomic Research Centre.
Papers
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Journal ArticleDOI
Microwave assisted rapid synthesis and biological evaluation of stable copper nanoparticles using T. arjuna bark extract
S. Yallappa,Jayappa Manjanna,M.A. Sindhe,N. D. Satyanarayan,Siddanakoppalu N. Pramod,K. Nagaraja +5 more
TL;DR: The in vitro antimicrobial activity is found to be effective for CuNPs dried at RT when compared to CuNPS dried at 70 °C, and CuNBP shows very good antioxidant property.
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Recovery of valuable metal ions from the spent lithium-ion battery using aqueous mixture of mild organic acids as alternative to mineral acids
TL;DR: In this paper, a well characterized cathode material (LiCoO2) recovered from spent lithium-ion battery is dissolved in aqueous mixture of citric acid (chelating agent) and ascorbic acid (reductant) at 80°C.
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Dissolution of cathode active material of spent Li-ion batteries using tartaric acid and ascorbic acid mixture to recover Co
TL;DR: In this article, a mixture of tartaric acid and ascorbic acid was used to dissolve the LiCoO2 collected from spent lithium-ion batteries (LIBs).
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Phytosynthesis of stable Au, Ag and Au-Ag alloy nanoparticles using J. sambac leaves extract, and their enhanced antimicrobial activity in presence of organic antimicrobials.
TL;DR: The phytosynthesized NPs showed enhanced antimicrobial activity (∼1-4-fold increase in zone of inhibition) in combination with antimicrobials against test strains, and could be used as effective growth inhibitors for various microorganisms.
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Use of mild organic acid reagents to recover the Co and Li from spent Li-ion batteries
TL;DR: The reductive-complexing dissolution mechanism is proposed here, which converts the dissolved Co(III)- to Co(II)-L (L=IDA or MA) thereby selective recovery of Co as Co( II)-oxalate is possible.