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Potbhare AK, Chaudhary RG, Chouke PB, Yerpude S, Mondal A, Sonkusare VN, Rai AR, Juneja HD. Phytosynthesis of nearly monodisperse CuO nanospheres using Phyllanthus reticulatus/Conyza bonariensis and its antioxidant/antibacterial assays. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 99:783-793. [PMID: 30889753 DOI: 10.1016/j.msec.2019.02.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 01/28/2023]
Abstract
In the present article we have developed an eco-friendly, phytosynthetic, cost-effective and straightforward method for the synthesis of nearly monodisperse CuO nanospheres (NSP) using leaf extracts of medicinal plants Phyllanthus reticulatus (PR) and Conyza bonariensis (CB) as novel green reducing agents. Copper nitrate (Cu (NO3)2) was used as a precursor. The stoichiometric ratio of both leaf extracts (PR/CB) and Cu(NO3)2 was standardized for the synthesis of NSP. During formation of CuO NSP, a color of solution gradually changed from light greenish-blue to black with a number of intermediate stages and it correlated to the reduction reaction catalyzed by phytochemicals. As-synthesized materials were characterized in detail at the structural, electronic level and morphological authentication by XRD, FT-IR, EDS, UV-DRS, Raman, XPS, SEM, TEM, BET and AFM. SEM studies of phytosynthesized materials revealed nearly monodisperse nanospheres, while TEM rendered average particles size 4-14 nm. Also, AFM profiles suggested a homogenized nature of the nanospheres. Then, the antioxidant property was obtained by α, α-diphenyl-β-picrylhydrazyl (DPPH). Ethanolic, methanolic extracts were used for the antioxidant activity, while ascorbic acid was used as a standard medium. Each plant extract exhibited noteworthy antioxidant activity. Moreover, the antibacterial activity of CuO NSP (PR/CB) was tested against human pathogenic bacteria viz. gram-positive Staphylococcus aureus, Klebsiella pneumoniae, and gram-negative Escherichia coli. Result rendered effective antibacterial activity against Escherichia coli.
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Affiliation(s)
- Ajay K Potbhare
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee 441001, Maharashtra, India
| | - Ratiram Gomaji Chaudhary
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee 441001, Maharashtra, India.
| | - Prashant B Chouke
- Post Graduate Department of Chemistry, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee 441001, Maharashtra, India
| | - Sachin Yerpude
- Post Graduate Department of Microbiology, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee 441001, Maharashtra, India
| | - Aniruddha Mondal
- Discipline of Inorganic Materials and Catalysis, Academy of Scientific and Innovative Research, CSIR-Central Salt and Marine Chemical Research Institute, Bhavnagar 364002, Gujarat, India
| | - Vaishali N Sonkusare
- Post Graduate Department of Chemistry, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India
| | - Alok R Rai
- Post Graduate Department of Microbiology, Seth Kesarimal Porwal College of Arts, Science and Commerce, Kamptee 441001, Maharashtra, India
| | - Harjeet D Juneja
- Post Graduate Department of Chemistry, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India
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Lin BC, Chen SY, Shen P. (Zn,H)-codoped copper oxide nanoparticles via pulsed laser ablation on Cu-Zn alloy in water. NANOSCALE RESEARCH LETTERS 2012; 7:272. [PMID: 22647312 PMCID: PMC3444393 DOI: 10.1186/1556-276x-7-272] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Accepted: 05/07/2012] [Indexed: 06/01/2023]
Abstract
Nanosized (5 to 10 nm) amorphous and crystalline nanocondensates, i.e., metallic α-phase of Zn-Cu alloy in face-centered cubic structure and (Zn,H)-codoped cuprite (Cu2O) with high-pressure-favored close-packed sublattice, were formed by pulsed laser ablation on bulk Cu65Zn35 in water and characterized by X-ray/electron diffractions and optical spectroscopy. The as-fabricated hybrid nanocondensates are darkish and showed photoluminescence in the whole visible region. Further dwelling of such nanocondensates in water caused progressive formation of a rice-like assembly of (Zn,H)-codoped tenorite (CuO) nanoparticles with (001), (100), and {111} preferred orientations, (111) tilt boundary, yellowish color, and minimum bandgap narrowing down to ca. 2.7 eV for potential photocatalytic applications.
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Affiliation(s)
- Bo-Cheng Lin
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
| | - Shuei-Yuan Chen
- Department of Mechanical and Automation Engineering, I-Shou University, Kaohsiung, 84001, Taiwan
| | - Pouyan Shen
- Department of Materials and Optoelectronic Science, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan
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