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Kolhe ND, Walekar LS, Kadam AN, Kulkarni MA, Parbat HA, Misra M, Lokhande BJ, Lee SW, Patil V, Mhamane D, Mali MG. Facile construction of multifunctional xNiCo 2O 4/BiVO 4 heterojunction with accelerated charge transfer for efficient photocatalytic treatment of Cr (VI), MB and TC under visible light. Chemosphere 2024; 352:141353. [PMID: 38307337 DOI: 10.1016/j.chemosphere.2024.141353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 11/09/2023] [Accepted: 01/31/2024] [Indexed: 02/04/2024]
Abstract
The release of industrial effluents, comprising of organic dyes, antibiotics, and heavy metals poses substantial environmental and ecological threats. Among the different approaches, the utilization of heterogeneous photocatalysis based on semiconducting metal oxides is of paramount important to removal of organic ( MB dye and TC antibiotic) and inorganic pollutants ( Cr (VI) ) in wastewater. In this work, a new approach for creating type-II heterojunction photocatalysts named xNiCo2O4/BiVO4 or BNC is suggested. The as-prepared samples were thoroughly examined by means of several sophisticated analytical tools to investigate their physicochemical properties. These composites were utilized in the decomposition of MB dye, TC drug and the reduction of Cr (VI) under visible light irradiation. According to the findings, the creation of type-II heterojunction at BiVO4-NiCo2O4 interface greatly improved charge transportation while successfully preventing electron-hole recombination. Among the various composites studied, BNC-2 demonstrated an enhanced photocatalytic activity towards degradation of MB and TC, which were found to be 91 % over a period of 150 min and 95 % within only 60 min, respectively. Moreover, the photocatalytic reduction of Cr (VI) was accomplished 96 % within just 25 min. Additionally, it is discovered that BNC-2 displayed promising photostability and recyclability with a retention of >90 % after five consecutive cycles. The enhanced photocatalytic activity of BNC-2 is evidently attributed to the expedited separation and transfer of charges, as proven by photocurrent measurement, photoluminescence and electrochemical impedance spectroscopy analyses. Hence, the current amalgamation of NiCo2O4 and BiVO4 heterojunction composite has paved novel paths towards photocatalytic removal of organic as well as inorganic contaminants.
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Affiliation(s)
- Nagesh D Kolhe
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, 413255, Maharashtra, India
| | - Laxman S Walekar
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, 413255, Maharashtra, India
| | - Abhijit N Kadam
- Department of Chemistry, John Wilson Education Society's, Wilson College (Autonomous), Mumbai, Maharashtra, 400007, India; Department of Chemical and Biological Engineering, Gachon University-1342 Seongnamdaero, Sujeong-gu, Seongnam-si, 13120, South Korea
| | - Makarand A Kulkarni
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, 413255, Maharashtra, India
| | - Harichandra A Parbat
- Department of Chemistry, John Wilson Education Society's, Wilson College (Autonomous), Mumbai, Maharashtra, 400007, India
| | - Mrinmoy Misra
- Department of Mechatronics Engineering, Manipal University Jaipur, Jaipur, India
| | - Balkrishna J Lokhande
- School of Physical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, 413 255, Maharashtra, India
| | - Sang-Wha Lee
- Department of Chemical and Biological Engineering, Gachon University-1342 Seongnamdaero, Sujeong-gu, Seongnam-si, 13120, South Korea
| | - Vaishali Patil
- Engineering and Applied Science Department, Vishwakarma Institute of Information Technology, Pune, Maharashtra, 411 048, India
| | - Dattakumar Mhamane
- Department of Chemistry, Sangameshwar College (Autonomous), Solapur, 413001, Maharashtra, India.
| | - Mukund G Mali
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur, 413255, Maharashtra, India.
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Gunjal DB, Walekar LS, Pawar SP, Anbhule PV, Mali MG, Dhulap VP, Sohn D, Mahajan PG, Lee KH, Shejwal RV, Kolekar GB. Sawmill waste derived carbon dots as a fluorescent probe for synthetic dyes in soft drinks. Sci Rep 2021; 11:17996. [PMID: 34504276 PMCID: PMC8429643 DOI: 10.1038/s41598-021-97552-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 05/07/2021] [Indexed: 12/03/2022] Open
Abstract
Herein, for the first time the carbon dots (CDs) were synthesized by reflux method from sawmill waste material. We also represent a novel strategy based on fluorescent CDs for determination of ponceau 4R and allura red dyes in soft drinks. Interestingly, both the dyes were sensitive and showed effective fluorescence quenching of the CDs owing to the interaction between them. The analytical applicability of CDs were evaluated for detection of both the dyes with a good linear relationship between the concentration range of 0.0 to 3.0 µg mL-1 and having detection limit 0.45 and 0.47 µg mL-1 for allura red and ponceau 4R dyes respectively. Meanwhile, the potential application of this novel fluorescent probe for dyes determination in real samples was validated in different soft drink samples with good accuracy and precision. Thus, these findings provides new insights for the potential risk assessment of both the dyes. Moreover, CDs acted as an excellent fluorescent material in cellular imaging owing to their cellular uptake and localization.
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Affiliation(s)
- Datta B Gunjal
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, 416004, India
- Department of Chemistry, Lal Bahadur Shastri College of Arts, Science and Commerce, Satara, Maharashtra, 415002, India
| | - Laxman S Walekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, 416004, India
| | - Samadhan P Pawar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, 416004, India
| | - Prashant V Anbhule
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, 416004, India
| | - Mukund G Mali
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar, Solapur University, Solapur, Maharashtra, 413255, India
| | - Vinayak P Dhulap
- School of Earth Sciences, Punyashlok Ahilyadevi Holkar, Solapur University, Solapur, Maharashtra, 413255, India
| | - Daewon Sohn
- Department of Chemistry and the Research Institute for Convergence of Basic Science, Hanyang University, Seoul, 04763, Republic of Korea
| | - Prasad G Mahajan
- Vidya Prathisthan's Arts, Commerce and Science College, Vidyanagari, Baramati, Maharashtra, 413133, India
| | - Ki Hwan Lee
- Department of Chemistry, Kongju National University, Gongju, Chungnam, 32588, Republic of Korea
| | - Rajendra V Shejwal
- Department of Chemistry, Lal Bahadur Shastri College of Arts, Science and Commerce, Satara, Maharashtra, 415002, India.
| | - Govind B Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur, Maharashtra, 416004, India.
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Walekar LS, Zheng M, Zheng L, Long M. Selenium and nitrogen co-doped carbon quantum dots as a fluorescent probe for perfluorooctanoic acid. Mikrochim Acta 2019; 186:278. [PMID: 30969370 DOI: 10.1007/s00604-019-3400-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 04/01/2019] [Indexed: 01/01/2023]
Abstract
Highly fluorescent carbon quantum dots co-doped with selenium and nitrogen (SeN-CQDs) were fabricated via a one-pot hydrothermal route using selenomethionine as the sole precursor. The SeN-CQDs aggregates have sizes between 30 and 45 nm and display blue fluorescence with a quantum yield of 8% at excitation/emission wavelengths of 350/445 nm. The fluorescence is pH dependent and decreases under acidic conditions. The doping of the CQDs with selenium and nitrogen was proven by X-ray photoelectron spectroscopy (XPS). Fluorescence is selectively quenched by perfluorooctanoic acid (PFOA), and this is accompanied by a decreased fluorescence lifetime. Quenching is not due to aggregation in view of the unaltered sizes of nanoparticles as revealed by TEM and DLS analyses. UV-vis absorption titration suggested the formation of an excited state complex between SeN-CQDs and PFOA, and quenching originates from the internal electron transfer in the excited state complex. The method was used to detect PFOA quantitatively in the linear range of 10-70 μM with a 1.8 μM detection limit. The nanoprobe has a high selectivity for PFOA over potentially interfering molecules. The practicability of the method was ascertained by accurate detection of PFOA in real samples by the standard addition method. The method may be further improved by tuning the interaction between PFOA and SeN-CQDs through optimizing the doping and the surface composition of the SeN-CQDs. Graphical abstract Schematic presentation of a fluorometric method for perfluorooctanoic acid detection by using a selenium and nitrogen co-doped carbon quantum dots as the fluorescent probe.
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Affiliation(s)
- Laxman S Walekar
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Mingda Zheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Longhui Zheng
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
| | - Mingce Long
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China. .,Key Laboratory for Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China.
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Patil SK, Patil SA, Vadiyar MM, Awale DV, Sartape AS, Walekar LS, Kolekar GB, Ghorpade UV, Kim JH, Kolekar SS. Tailor-made dicationic ionic liquid as a fluorescent sensor for detection of hydroquinone and catechol. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.08.119] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pawar SP, Walekar LS, Gunjal DB, Dalavi DK, Gore AH, Anbhule PV, Patil SR, Kolekar GB. Fluorescence-based sensor for selective and sensitive detection of amoxicillin (Amox) in aqueous medium: Application to pharmaceutical and biomedical analysis. LUMINESCENCE 2017; 32:918-923. [DOI: 10.1002/bio.3271] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/15/2016] [Accepted: 12/03/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Samadhan P. Pawar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Laxman S. Walekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Dattatray B. Gunjal
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Dattatray K. Dalavi
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Anil H. Gore
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Prashant V. Anbhule
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Shivajirao R. Patil
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
| | - Govind B. Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry; Shivaji University; Kolhapur Maharashtra India
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Pawar SP, Walekar LS, Kondekar UR, Gunjal DB, Gore AH, Anbhule PV, Patil SR, Kolekar GB. CdS nanocrystals as fluorescent probe for detection of dolasetron mesylate in aqueous solution: Application to biomedical analysis. J Pharm Anal 2016; 6:410-416. [PMID: 29404011 PMCID: PMC5762932 DOI: 10.1016/j.jpha.2016.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 07/10/2016] [Accepted: 07/11/2016] [Indexed: 11/23/2022] Open
Abstract
A simple and straightforward method for the determination of dolasetron mesylate (DM) in aqueous solution was developed based on the fluorescence quenching of 3-Mercaptopropionic acid (MPA) capped CdS quantum dots (QDs). The structure, morphology, and optical properties of synthesized QDs were characterized by using UV-Vis absorption spectroscopy, fluorescence spectroscopy, transmission electron microscopy (TEM) and dynamic light scattering (DLS) measurements. Under the optimum conditions, the MPA-CdS QDs fluorescence probe offered good sensitivity and selectivity for detecting DM. The probe provided a highly specific selectivity and a linear detection of DM in the range of 2-40 µg/mL with detection limit (LOD) 1.512 µg/mL. The common excipients did not interfere in the proposed method. The fluorescence quenching mechanism of CdS QDs is also discussed. The developed sensor was applied to the quantification of DM in urine and human serum sample with satisfactory results.
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Affiliation(s)
| | | | | | | | | | | | | | - Govind B. Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India
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Walekar LS, Pawar SP, Gore AH, Suryawanshi VD, Undare SS, Anbhule PV, Patil SR, Kolekar GB. Surfactant stabilized AgNPs as a colorimetric probe for simple and selective detection of hypochlorite anion (ClO−) in aqueous solution: Environmental sample analysis. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2015.11.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Suryawanshi VD, Walekar LS, Gore AH, Anbhule PV, Kolekar GB. Spectroscopic analysis on the binding interaction of biologically active pyrimidine derivative with bovine serum albumin. J Pharm Anal 2016; 6:56-63. [PMID: 29403963 PMCID: PMC5762442 DOI: 10.1016/j.jpha.2015.07.001] [Citation(s) in RCA: 211] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 07/11/2015] [Accepted: 07/14/2015] [Indexed: 12/02/2022] Open
Abstract
A biologically active antibacterial reagent, 2-amino-6-hydroxy-4-(4-N, N-dimethylaminophenyl)-pyrimidine-5-carbonitrile (AHDMAPPC), was synthesized. It was employed to investigate the binding interaction with the bovine serum albumin (BSA) in detail using different spectroscopic methods. It exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus which are common food poisoning bacteria. The experimental results showed that the fluorescence quenching of model carrier protein BSA by AHDMAPPC was due to static quenching. The site binding constants and number of binding sites (n≈1) were determined at three different temperatures based on fluorescence quenching results. The thermodynamic parameters, enthalpy change (ΔH), free energy (ΔG) and entropy change (ΔS) for the reaction were calculated to be 15.15 kJ/mol, -36.11 kJ/mol and 51.26 J/mol K according to van't Hoff equation, respectively. The results indicated that the reaction was an endothermic and spontaneous process, and hydrophobic interactions played a major role in the binding between drug and BSA. The distance between donor and acceptor is 2.79 nm according to Förster's theory. The alterations of the BSA secondary structure in the presence of AHDMAPPC were confirmed by UV-visible, synchronous fluorescence, circular dichroism (CD) and three-dimensional fluorescence spectra. All these results indicated that AHDMAPPC can bind to BSA and be effectively transported and eliminated in the body. It can be a useful guideline for further drug design.
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Affiliation(s)
| | | | | | | | - Govind B. Kolekar
- Fluorescence Spectroscopy Research Laboratory, Department of Chemistry, Shivaji University, Kolhapur 416 004, Maharashtra, India
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Undare SS, Valekar NJ, Patravale AA, Jamale DK, Vibhute SS, Walekar LS, Kolekar GB, Deshmukh M, Anbhule PV. Synthesis, anti-inflammatory, ulcerogenic and cyclooxygenase activities of indenopyrimidine derivatives. Bioorg Med Chem Lett 2016; 26:814-818. [DOI: 10.1016/j.bmcl.2015.12.088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 12/02/2015] [Accepted: 12/25/2015] [Indexed: 12/13/2022]
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Undare SS, Valekar NJ, Patravale AA, Jamale DK, Vibhute SS, Walekar LS, Kolekar GB, Deshmukh MB, Anbhule PV. One-pot synthesis and in vivo biological evaluation of new pyrimidine privileged scaffolds as potent anti-inflammatory agents. Res Chem Intermed 2015. [DOI: 10.1007/s11164-015-2281-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Walekar LS, Kondekar UR, Gore AH, Pawar SP, Sudarsan V, Anbhule PV, Patil SR, Kolekar GB. Ultrasensitive, highly selective and naked eye colorimetric recognition ofd-penicillamine in aqueous media by CTAB capped AgNPs: applications to pharmaceutical and biomedical analysis. RSC Adv 2014. [DOI: 10.1039/c4ra05741d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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