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Adraoui I, Jaafar B. Sustainable management of water resources and assessment of the vulnerability of Moroccan oases to climate change. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:17981-17993. [PMID: 36705828 DOI: 10.1007/s11356-023-25498-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 01/18/2023] [Indexed: 01/28/2023]
Abstract
In the oases of Morocco, climate trends show an increase in average temperatures of 2.2 °C and exacerbated precipitation by + 20% between 2020 and 2050 according to climate change scenarios. The consequences of these changes have a clear decrease in water availability and an increase in water needs. Therefore, analyzing water resource capacity and searching for adequate solutions to water scarcity in oases are essential for developing drylands. In this study, we assess the possible effects of climate change on water scarcity and the oasis ecosystem and its components. The calculated water stress index (WSI) remains very low due to a decrease in the resource impacted by the combined increase in precipitation and temperature. The obtained results indicate that for scenario 1 the WSI varies from 904 to 699 m3/inhab/year in 2030 and for scenario 2 the WSI varies between 583 in 2030 and 451 m3/inhab/year in 2050. The water availability indicator takes a value in scenario 1 of 75% for Zagora and 50% for Ouarzazate at the horizons 2030 and 2050, then increase in scenario 2 to 89% for Zagora and 78% for Ouarzazate at the horizons2030 and 2050. These results were used to develop the adaptation process, which aims to identify needs, activities, and projects in the short, medium, and long term at the horizons 2030 and 2050. In addition, it could shed light on sustainable development in this region. In addition, this study could be a reference for researchers and a decision-support document for decision-makers to place economic development within an environmental management framework.
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Affiliation(s)
- Imane Adraoui
- Laboratory of Materials and Biotechnology and Environment (LBME), Ibn Zohr University, Agadir, Morocco.
- Faculty of Applied Sciences-Ait Melloul, Ibn Zohr University, Agadir, Morocco.
| | - Brahim Jaafar
- Laboratory of Terrestrial Ecology, Faculty of Sciences Semlalia, Cadi Ayad University, Marrakech, Morocco
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Ganeshbabu M, Priya JS, Manoj GM, Puneeth NPN, Shobana C, Shankar H, Selvan RK. Photocatalytic degradation of fluoroquinolone antibiotics using chitosan biopolymer functionalized copper oxide nanoparticles prepared by facile sonochemical method. Int J Biol Macromol 2023; 253:127027. [PMID: 37751823 DOI: 10.1016/j.ijbiomac.2023.127027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/31/2023] [Accepted: 09/20/2023] [Indexed: 09/28/2023]
Abstract
Photocatalytic degradation is an excellent method for removing pharmaceutical residues due to their simplicity, ecological benignity, high efficiency, and exceptional stability. Herein, we demonstrate the sonochemically synthesised chitosan biopolymer functionalized copper oxide nanoparticles as an efficient photocatalyst for the degradation of fluoroquinolone-based antibiotics. The X-ray diffraction Rietveld refinement revealed the formation of single-phase copper oxide (CuO) with a monoclinic structure. The presence of biopolymer functionalization was corroborated by Fourier Transform Infrared spectroscopy by observing the -NH2 and -OH functional groups. The high-resolution transmission electron microscopic images inferred that Chitosan functionalized copper oxide (C-CuO) particles are nano-sized with a smooth texture and aggregation-free particles. The strong absorbance and the broad photoluminescence emission in the ultraviolet-visible region confirm the suitability of CuO and C-CuO nanoparticles for photocatalytic applications. The catalytic activity was studied against fluoroquinolone-based antibiotics such as ciprofloxacin and norfloxacin under direct sunlight illumination. Interestingly, the C-CuO catalyst demonstrated 71.07 % (@140 min.) and 71.9 % (@60 min.) of degradation for ciprofloxacin and norfloxacin, respectively. The obtained photocatalytic activity of the prepared CuO and C-CuO catalysts was superior to the CuO particles prepared by the coprecipitation method (CC-CuO).
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Affiliation(s)
- M Ganeshbabu
- Energy Storage and Conversion Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - J Shiva Priya
- Energy Storage and Conversion Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - G Murali Manoj
- Department of Physics, KPR Institute of Engineering and Technology, Coimbatore 641407, India
| | - N Prasanna Naga Puneeth
- Energy Storage and Conversion Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641046, Tamil Nadu, India
| | - C Shobana
- Department of Zoology, Kongunadu Arts and Science College, G.N. Mills, Coimbatore 641 029, India
| | - H Shankar
- Department of Physics, KPR Institute of Engineering and Technology, Coimbatore 641407, India.
| | - R Kalai Selvan
- Energy Storage and Conversion Devices Laboratory, Department of Physics, Bharathiar University, Coimbatore 641046, Tamil Nadu, India.
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Wary RR, Narzary M, Brahma BB, Brahma D, Kalita P, Buzar Baruah M. Nanostructural Design of ZnO Using an Agro-Waste Extract for a Sustainable Process and Its Photocatalytic Activity. ACS APPLIED BIO MATERIALS 2023; 6:4645-4661. [PMID: 37938913 DOI: 10.1021/acsabm.3c00412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
The use of agro-waste extracts (AWEs) as a sustainable medium for developing cost-effective and ecologically friendly nanomaterials has piqued the interest of current researchers. Herein, waste extracts from papaya barks, banana peels, thumba plants, and snail shells were used for synthesizing ZnO nanostructures via a hydrothermal method, followed by calcination at 400 °C. The crystallinity and pure wurtzite phase formation of ZnO nanostructures were confirmed via X-ray diffraction. ZnO nanostructures with various morphologies such as tight sheet-like, spherical, porous sheet-like, and bracket-shaped, comprising small interconnected particles with a highly catalytically active exposed (0001) facet, were observed via field emission scanning electron microscopy and transmission electron microscopy. The formation mechanism of the various morphologies of the ZnO nanostructures was proposed. Ultraviolet-visible spectra showed different absorption band edges of ZnO nanostructures with a bandgap in the range of 3.17-3.27 eV. Photoluminescence studies showed the presence of various defect states such as oxygen and zinc vacancies and oxygen and zinc interstitials on ZnO nanostructures, which are usually observed in traditionally prepared ZnO. The photocatalytic activity of ZnO nanostructures was evaluated under direct sunlight using rhodamine B (RhB) and Congo red (CR) dyes as probe pollutants. Furthermore, prepared ZnO nanostructures could potentially adsorb anionic dyes (e.g., CR) in the absence of light. Superoxide and hydroxide radicals played a vital role in the photocatalytic activity of ZnO. The photocatalyst could be reused for up to three cycles, indicating its stability. Therefore, this study reports the diverse use of AWEs as cost-effective media for nanomaterial synthesis.
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Affiliation(s)
- Riu Riu Wary
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Mousumi Narzary
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Bidhu Bhusan Brahma
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Dulu Brahma
- Department of Chemistry, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Pranjal Kalita
- Department of Chemistry, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
| | - Manasi Buzar Baruah
- Department of Physics, Central Institute of Technology Kokrajhar (Deemed to be University, MoE, Govt. of India), Kokrajhar 783370, Assam, India
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Palei NN, Krishnan SN, Jayaraman R, Reddy SH, Balaji A, Samanta MK, Mohanta BC. Green Synthesis of Silver Nanoparticles of Vernonia cinerea Leaf Extract and their In vitro Cytotoxicity Activity against Neuroblastoma SHSY-5Y Cell Lines, Antimicrobial and Antioxidant Studies. RECENT PATENTS ON NANOTECHNOLOGY 2023; 17:270-280. [PMID: 35619324 DOI: 10.2174/1872210516666220520144453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 03/18/2022] [Accepted: 04/01/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Green syntheses of silver nanoparticles using plant extracts have potential anti- cancer, antimicrobial, and antioxidant properties, among other aspects. The aim of the present patent study was to synthesize silver nanoparticles (AgNPs) using Vernonia cinerea plant extract. METHODS The AgNPs were successfully prepared and characterized using UV-Vis Spectrophotometer, particle size, Zeta potential, Transmission electron microscopy (TEM), Energy-dispersive x-ray analysis (EDAX), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectrometry. The in vitro cytotoxicity study was performed using neuroblastoma SHSY-5Y cell lines. Moreover, antimicrobial and antioxidant activity studies were also performed for AgNPs. RESULTS The size of AgNPs determined through the dynamic light scattering (DLS) technique was 49.5 nm and the zeta potential was -36.8 mV. The synthesized AgNPs were checked using UV-Visible spectroscopy at ƛmax 439 nm. The color was changed from green to dark brown, indicating the formation of AgNPs. The TEM study revealed that the nanoparticles were spherical in shape. The XRD pattern of AgNPs produced in this experiment was apparently crystalline. The results of FTIR study revealed that the majority of the obtained peaks correspond to the polyphenols, triterpenoids, and alkaloids which were abundant in the corresponding to the V. cinerea leaf extract and support to the formation of AgNPs. The cytotoxicity effect of the V. cinerea plant extract and biosynthesized AgNPs was found to be dosedependent. From the results of antimicrobial studies, it was reported that the gram negative bacteria were found to be more susceptible compared to the gram positive bacteria. Moreover, the results of antioxidant study revealed that the AgNPs showed good antioxidant activity (77.21%) in comparison to the V. cinerea plant extract (56.13%). CONCLUSION Based on the results, it could be concluded that the green synthesized silver nanoparticles showed promising anticancer, antioxidant, and anti-bacterial activities as compared to the plain V. cineria plant extract.
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Affiliation(s)
- Narahari N Palei
- School of Pharmacy, The Neotia University, Sarisha, West Bengal, 743 368, India
| | - S Navaneetha Krishnan
- Department of Phamacology, Dr. Kalam College of Pharmacy, Thanjavur, Tamil Nadu, 614 623, India
| | - R Jayaraman
- Department of Phamacology, Sree Vidyanikethan College of Pharmacy, Tirupati, Andhra Pradesh, 517102, India
| | - S Hemanth Reddy
- Department of Phamacology, Sree Vidyanikethan College of Pharmacy, Tirupati, Andhra Pradesh, 517102, India
| | - Anna Balaji
- Department of Phamacology, Sree Vidyanikethan College of Pharmacy, Tirupati, Andhra Pradesh, 517102, India
| | - Malay K Samanta
- School of Pharmacy, The Neotia University, Sarisha, West Bengal, 743 368, India
| | - Bibhash C Mohanta
- College of Pharmacy, Teerthanker Mahaveer University, Moradabad, Uttar Pradesh, 244001, India
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Prinith NS, Manjunatha JG, Albaqami MD, Mohamed Tighezza A, Sillanpää M. Electrochemical Analysis of Food additive Vanillin using Poly (Aspartic Acid) Modified Graphene and Graphite composite Paste Sensor. ChemistrySelect 2022. [DOI: 10.1002/slct.202203572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Nambudumada S. Prinith
- Department of Chemistry, FMKMC College Constituent College of Mangalore University, Madikeri Karnataka India
| | - Jamballi G. Manjunatha
- Department of Chemistry, FMKMC College Constituent College of Mangalore University, Madikeri Karnataka India
| | - Munirah D. Albaqami
- Department of Chemistry, College of Science King Saud University Riyadh 11451 Saudi Arabia
| | - Ammar Mohamed Tighezza
- Department of Chemistry, College of Science King Saud University Riyadh 11451 Saudi Arabia
| | - Mika Sillanpää
- Department of Biological and Chemical Engineering Aarhus University, Norrebrogade 44 8000 Aarhus C Denmark
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Venkatesan S, Suresh S, Ramu P, Arumugam J, Thambidurai S, Pugazhenthiran N. Methylene Blue Dye Degradation Potential of Zinc Oxide Nanoparticles Bioreduced using Solanum trilobatum Leaf Extract. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bin Mobarak M, Hossain MS, Chowdhury F, Ahmed S. Synthesis and characterization of CuO nanoparticles utilizing waste fish scale and exploitation of XRD peak profile analysis for approximating the structural parameters. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Truong TT, Le TH, Pham TD. Adsorption characteristics of Copper (II) ion on Cu-doped ZnO nanomaterials based on green synthesis from Piper Chaudocanm L. leaves extract. Colloid Polym Sci 2022. [DOI: 10.1007/s00396-022-05028-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Nguyen NTT, Nguyen LM, Nguyen TTT, Liew RK, Nguyen DTC, Tran TV. Recent advances on botanical biosynthesis of nanoparticles for catalytic, water treatment and agricultural applications: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 827:154160. [PMID: 35231528 DOI: 10.1016/j.scitotenv.2022.154160] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Green synthesis of nanoparticles using plant extracts minimizes the usage of toxic chemicals or energy. Here, we concentrate on the green synthesis of nanoparticles using natural compounds from plant extracts and their applications in catalysis, water treatment and agriculture. Polyphenols, flavonoid, rutin, quercetin, myricetin, kaempferol, coumarin, and gallic acid in the plant extracts engage in the reduction and stabilization of green nanoparticles. Ten types of nanoparticles involving Ag, Au, Cu, Pt, CuO, ZnO, MgO, TiO2, Fe3O4, and ZrO2 with emphasis on their formation mechanism are illuminated. We find that green nanoparticles serve as excellent, and recyclable catalysts for reduction of nitrophenols and synthesis of organic compounds with high yields of 83-100% and at least 5 recycles. Many emerging pollutants such as synthetic dyes, antibiotics, heavy metal and oils are effectively mitigated (90-100%) using green nanoparticles. In agriculture, green nanoparticles efficiently immobilize toxic compounds in soil. They are also sufficient nanopesticides to kill harmful larvae, and nanoinsecticides against dangerous vectors of pathogens. As potential nanofertilizers and nanoagrochemicals, green nanoparticles will open a revolution in green agriculture for sustainable development.
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Affiliation(s)
- Ngoan Thi Thao Nguyen
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City 700000, Viet Nam
| | - Luan Minh Nguyen
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; Department of Chemical Engineering and Processing, Nong Lam University, Thu Duc District, Ho Chi Minh City 700000, Viet Nam
| | - Thuy Thi Thanh Nguyen
- Faculty of Science, Nong Lam University, Thu Duc District, Ho Chi Minh City 700000, Viet Nam
| | - Rock Keey Liew
- Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; NV WESTERN PLT, No. 208B, Jalan Macalister, Georgetown 10400, Pulau Pinang, Malaysia
| | - Duyen Thi Cam Nguyen
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam.
| | - Thuan Van Tran
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam; NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, Ho Chi Minh City 755414, Viet Nam.
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Adsorption of methylene blue onto synthesized Co3O4, NiO, CuO and ZnO nanoparticles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-021-02424-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Recent Advances in the One-Pot Synthesis of Coumarin Derivatives from Different Starting Materials Using Nanoparticles: A Review. Top Catal 2022. [DOI: 10.1007/s11244-022-01571-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Design of Zn1−xCuxO Nanocomposite Ag-Doped as an Efficient Antimicrobial Agent. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02131-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Pushpanjali PA, Manjunatha JG, Hareesha N, Girish T, Al-Kahtani AA, Tighezza AM, Ataollahi N. Electrocatalytic Determination of Hydroxychloroquine Using Sodium Dodecyl Sulphate Modified Carbon Nanotube Paste Electrode. Top Catal 2022:1-9. [PMID: 35075339 PMCID: PMC8769944 DOI: 10.1007/s11244-022-01568-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2021] [Indexed: 12/19/2022]
Abstract
Selective, sensitive, easy, and fast voltammetric techniques were developed for the analysis of Hydroxychloroquine (HCQ). These analysis were carried out at sodium dodecyl sulphate modified carbon nanotube paste electrode (SDSMCNTPE) using an aqueous 0.2 M phosphate buffer solution as supporting electrolyte. The field emission-scanning electron microscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy were used for material characterization. A minute quantity of the SDS surfactant was sufficient to convey an outstanding electrocatalytic action to the electrochemical oxidation nature of HCQ. The HCQ molecule parades only electrochemical oxidation (irreversible) with the transfer of two electrons. The detection of HCQ was carried out through CV method at SDSMCNTPE and bare carbon nanotube paste electrode (BCNTPE). The corresponding analytical curve offered a decent linear nature in the considered HCQ concentration range (10-40 µM) and the detection limit was found to be 0.85 µM. The significant peak to peak split-up was observed between HCQ and interferents with a decent sensitivity and stability. The SDSMCNTPE to be an approachable electrode for the usage in the examination of HCQ independently and in the presence of paracetamol (PC) and ascorbic acid (AA). Thus, they were used to determine HCQ in pharmaceutical formulations and the results that showed good agreement with comparative methods. Furthermore, a mechanism for HCQ electro-oxidation was proposed.
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Affiliation(s)
- P. A. Pushpanjali
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka India
| | - J. G. Manjunatha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka India
| | - N. Hareesha
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka India
| | - T. Girish
- Department of Chemistry, FMKMC College, Constituent College of Mangalore University, Madikeri, Karnataka India
| | - Abdullah A. Al-Kahtani
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451 Saudi Arabia
| | - Ammar Mohamed Tighezza
- Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451 Saudi Arabia
| | - Narges Ataollahi
- Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano, 77, 38123 Trento, Italy
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Avar B, Panigrahi M, Soguksu AK, Rajendrachari S, Gundes A. Photocatalytic Activity of Soft Magnetic Fe80−xCoxZr10Si10 (x = 0, 40, and 80) Nanocrystalline Melt-Spun Ribbons. Top Catal 2022. [DOI: 10.1007/s11244-022-01569-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Enhanced Photocatalytic Activity of Hydrothermally Synthesized Perovskite Strontium Titanate Nanocubes. Top Catal 2022. [DOI: 10.1007/s11244-021-01558-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Electrochemical sensing of antibiotic drug amoxicillin in the presence of dopamine at simple and selective carbon paste electrode activated with cetyltrimethylammonium bromide surfactant. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02870-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides. Catalysts 2021. [DOI: 10.3390/catal11070806] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Green manufacturing of catalysts enables sustainable advanced oxidation processes and water treatment processes for removing trace contaminants such as pesticides. An environmentally friendly biosynthesis process produced high-surface-area CuO and NiO nanocatalysts using phytochemicals in the Capparis decidua leaf extract, which served as a reductant and influenced catalyst shape. Capparis decidua is a bushy shrub, widely distributed in dry and arid regions of Africa, Pakistan, India, Egypt, Jordan, Sudan, Saudi Arabia. The synthesized CuO and NiO nanoparticles were characterized by UV-vis spectroscopy (UV-vis), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) and thermo-gravimetric analysis/differential thermal analysis (TGA/DTA). The produced nanoparticles were spherical and flower-like in shape and have a characteristic face-centered cubic structure of CuO and NiO. Biosynthesized catalysts were photoactive and degraded recalcitrant pesticide Lambda-cyhalothrin (L-CHT). Photocatalytic degradation of L-CHT was affected by the initial L-CHT concentration, solution pH levels between 5 and 9, and photocatalyst concentration. The L-CHT removal percentage attained by CuO photocatalyst (~99%) was higher than for NiO photocatalyst (~89%). The degradation of L-CHT follows a pseudo-first-order kinetic model, and the apparent rate constant (kapp) decreased from 0.033 min−1 for CuO to 0.0084 min−1 for NiO photocatalyst. The novel flower-shaped nanoparticles demonstrated high stability in water and recyclability for removing L-CHT pesticide contamination in water.
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Polymerized carbon nanotube paste electrode as a sensing material for the detection of adrenaline with folic acid. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02756-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Pushpanjali PA, Manjunatha JG, Amrutha BM, Hareesha N. Development of carbon nanotube-based polymer-modified electrochemical sensor for the voltammetric study of Curcumin. ACTA ACUST UNITED AC 2020. [DOI: 10.1080/14328917.2020.1842589] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Pemmatte A. Pushpanjali
- Department of Chemistry, FMKMC College, Madikeri, Mangalore University Constituent College, India
| | - Jamballi G. Manjunatha
- Department of Chemistry, FMKMC College, Madikeri, Mangalore University Constituent College, India
| | - Balliamada M. Amrutha
- Department of Chemistry, FMKMC College, Madikeri, Mangalore University Constituent College, India
- Department of Chemistry, NMAM Institute of Technology, Nitte, India
| | - Nagarajappa Hareesha
- Department of Chemistry, FMKMC College, Madikeri, Mangalore University Constituent College, India
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