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Khose RV, Lokhande KD, Bhakare MA, Dhumal PS, Wadekar PH, Some S. Boron Nitride doped Chitosan Functionalized Graphene for an Efficient Dye Degradation. ChemistrySelect 2021. [DOI: 10.1002/slct.202101611] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rahul V. Khose
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Kshama D. Lokhande
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Madhuri A. Bhakare
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Pratik S. Dhumal
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Pravin H. Wadekar
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Surajit Some
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology Matunga, Mumbai 400 019 India
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Khose RV, Bondarde MP, Wadekar PH, Some S. Synthesis of High Concentration Stable Water Dispersion of Exfoliated Activated Graphite for Supercapacitor Application. ChemistrySelect 2021. [DOI: 10.1002/slct.202101794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Rahul V. Khose
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
| | - Mahesh P. Bondarde
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
| | - Pravin H. Wadekar
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
| | - Surajit Some
- Department of Speciality Chemicals Technology Institute of Chemical Technology Mumbai 400 019 India
- Department of Specialty Chemicals Technology Institute of Chemical Technology, Matunga Mumbai 400 019 India
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Khose RV, Chakraborty G, Bondarde MP, Wadekar PH, Ray AK, Some S. Red-fluorescent graphene quantum dots from guava leaf as a turn-off probe for sensing aqueous Hg(ii). NEW J CHEM 2021. [DOI: 10.1039/d0nj06259f] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we have prepared red-fluorescent graphene quantum dots and utilized as a highly selective and sensitive fluorescence turn-off probe for detection of the toxic metal ion Hg2+ from guava leaf extract.
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Affiliation(s)
- Rahul V. Khose
- Department of Speciality chemicals Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
| | - Goutam Chakraborty
- Laser and Plasma Technology Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
| | - Mahesh P. Bondarde
- Department of Speciality chemicals Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
| | - Pravin H. Wadekar
- Department of Speciality chemicals Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
| | - Alok K. Ray
- Laser and Plasma Technology Division
- Bhabha Atomic Research Centre
- Mumbai 400085
- India
- Professor
| | - Surajit Some
- Department of Speciality chemicals Technology
- Institute of Chemical Technology
- Mumbai 400019
- India
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Wadekar PH, Khose RV, Pethsangave DA, Some S. One‐step Preparation of Conducting Polymer/Metal Oxide Doped RGO Trinary Composite for Supercapacitor Applications. ChemistrySelect 2020. [DOI: 10.1002/slct.202002911] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Pravin H. Wadekar
- Department of Dyestuff Technology Institute of Chemical Technology Matunga Mumbai 400 019 India
| | - Rahul V. Khose
- Department of Dyestuff Technology Institute of Chemical Technology Matunga Mumbai 400 019 India
| | | | - Surajit Some
- Department of Dyestuff Technology Institute of Chemical Technology Matunga Mumbai 400 019 India
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Wadekar PH, Ghosh A, Khose RV, Pethsangave DA, Mitra S, Some S. A novel chemical reduction/co-precipitation method to prepare sulfur functionalized reduced graphene oxide for lithium-sulfur batteries. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136147] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Khose RV, Wadekar PH, Pethsangave DA, Chakraborty G, Ray AK, Some S. Novel approach towards the synthesis of highly efficient flame retardant electrode and oil/organic solvent absorber. Chemosphere 2020; 246:125785. [PMID: 31927374 DOI: 10.1016/j.chemosphere.2019.125785] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/11/2019] [Revised: 12/27/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
We have developed a facile one pot process to synthesize an ultra-light functionalized spongy graphene (FSG). This is the first approach to use carbon based flame retardant spongy material as an electrode to build completely flame retardant supercapacitor (FRS) also as an oil/organic solvent absorber. The fully FRS concept has created by the compilation of as-prepared FSG with flame retardant separator and electrolyte. As-prepared FSG contained high amount of phosphorus and nitrogen functional groups, which makes it potent flame retardant electrochemical material, to use it as an efficient FR electrode. Flame test of FSG revealed that it doesn't catch fire for ∼1500 s. Also, FSG was able to sustain flame retardancy at a temperature as high as 1500 °C for continuous exposure of ∼300 s. FSG used as an electrode for symmetric capacitor possessing maximum specific capacitance of 494.3 F g-1 at a current density 1 A g-1. Corresponding high energy density and power density values are 55.6 Wh kg-1 and 1799 W kg-1. It shows cycling stability of 86.1% after 5000 cycles at current density of 10 A g-1. The electrochemical property of FSG was also confirmed using three electrode system. Flame retardant FSG material was also used for the absorption and recovery of oil and organic solvents. FSG has high oil and organic solvent sorption capacity in the range of 40-70 g/g, also can be reused for minimum 10 cycles. Such approach has great significance for multifunctional graphene based nanocomposites will open the new window for large-scale applications.
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Affiliation(s)
- Rahul V Khose
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Pravin H Wadekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Dattatray A Pethsangave
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai, 400019, India
| | - Goutam Chakraborty
- Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | - Alok K Ray
- Laser and Plasma Technology Division, Bhabha Atomic Research Centre, Mumbai, 400085, India; Homi Bhabha National Institute (HBNI), Mumbai, 400094, India
| | - Surajit Some
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai, 400019, India.
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Pethsangave DA, Khose RV, Wadekar PH, Kulal DK, Some S. One‐Pot Synthetic Approach for Magnetically Separable Graphene Nanocomposite for Dye Degradation. ChemistrySelect 2020. [DOI: 10.1002/slct.201903966] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Rahul V. Khose
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Pravin H. Wadekar
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Dnyaneshwar K. Kulal
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
| | - Surajit Some
- Department of Dyestuff TechnologyInstitute of Chemical Technology Matunga, Mumbai 400 019 India
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Wadekar PH, Khose RV, Pethsangave DA, Some S. One-Pot Synthesis of Sulfur and Nitrogen Co-Functionalized Graphene Material using Deep Eutectic Solvents for Supercapacitors. ChemSusChem 2019; 12:3326-3335. [PMID: 31077560 DOI: 10.1002/cssc.201900953] [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] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 04/27/2019] [Indexed: 05/06/2023]
Abstract
A green approach to the synthesis of sulfur and nitrogen co-functionalized reduced graphene oxide (SN-rGO) is presented; it involves the reduction of graphene oxide (GO) using a deep eutectic solvent (DES) as chemical reducing agent and dopant. For the first time, a DES of choline chloride and sodium sulfide comprising cheap and safe components is introduced, and is both highly effective and reusable as a reducing agent for the production of SN-rGO. The DES is utilized as a solvent as well as reducing agent and dopant to generate SN-rGO. This DES is highly efficient in removing oxygen functionalities from GO and for subsequent sulfur and nitrogen functionalization for high energy-storage efficiency. The reduction ability of this DES is confirmed with five consecutive cycles, which adds to its sustainability and recyclability in the development of energy-storage devices. SN-rGO exhibits a high specific capacitance of 509 F g-1 at 1 A g-1 , which corresponds to high energy and power densities of 57.3 Wh kg-1 and 1804.7 W kg-1 , respectively. This simple and green method for direct reduction of GO with sulfur and nitrogen functionalization on the graphene surface can provide cost-effective bulk production of a nanocarbon template for energy storage applications.
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Affiliation(s)
- Pravin H Wadekar
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai-, 400 019, India
| | - Rahul V Khose
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai-, 400 019, India
| | - Dattatray A Pethsangave
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai-, 400 019, India
| | - Surajit Some
- Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai-, 400 019, India
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Kulal DK, Khose RV, Pethsangave DA, Wadekar PH, Some S. Biomass‐Derived Lignocellulosic Graphene Composite: Novel Approach for Removal of Oil and Organic Solvent. ChemistrySelect 2019. [DOI: 10.1002/slct.201900115] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dnyaneshwar K. Kulal
- Department of Dyestuff TechnologyInstitute of Chemical Technology, Matunga Mumbai-400 019 India
| | - Rahul V. Khose
- Department of Dyestuff TechnologyInstitute of Chemical Technology, Matunga Mumbai-400 019 India
| | | | - Pravin H. Wadekar
- Department of Dyestuff TechnologyInstitute of Chemical Technology, Matunga Mumbai-400 019 India
| | - Surajit Some
- Department of Dyestuff TechnologyInstitute of Chemical Technology, Matunga Mumbai-400 019 India
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Wadekar PH, Ahirrao DJ, Khose RV, Pethsangave DA, Jha N, Some S. Synthesis of Aqueous Dispersible Reduced Graphene Oxide by the Reduction of Graphene Oxide in Presence of Carbonic Acid. ChemistrySelect 2018. [DOI: 10.1002/slct.201800221] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pravin H. Wadekar
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
| | - Dinesh J. Ahirrao
- Department of Physics; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
| | - Rahul V. Khose
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
| | - Dattatray A. Pethsangave
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
| | - Neetu Jha
- Department of Physics; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
| | - Surajit Some
- Department of Dyestuff Technology; Institute of Chemical Technology, Matunga; Mumbai-400 019 India
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Pethsangave DA, Khose RV, Wadekar PH, Some S. Deep Eutectic Solvent Functionalized Graphene Composite as an Extremely High Potency Flame Retardant. ACS Appl Mater Interfaces 2017; 9:35319-35324. [PMID: 28901747 DOI: 10.1021/acsami.7b09587] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We report a simple and green approach to develop the deep eutectic solvent functionalized graphene derivative as an effective flame retardant. The deep eutectic solvent functionalized graphene oxide (DESGO) was synthesized by introducing nitrogen-supported phosphorus functional groups on the surface of graphene derivative via a deep eutectic solvent, which is prepared by the treatment of monosodium dihydrogen orthophosphate and choline chloride. Subsequently, the resultant DESGO material is characterized by X-ray photoelectron spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis, and scanning electron microscopy. The as prepared DESGO solution coated cloth piece was sustaining its initial shape and size by releasing a little amount of smoke at the early stage without catching fire for more than 540 s (9 min), whereas the pristine cloth is totally burned out within 10 s, leaving small amounts of black mass. This simple method of directly functionalized deep eutectic solvent on a graphene oxide surface can be a common process for the cost-effective bulk production of a nano carbon template for extremely high potency, nontoxic flame retardant applications.
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Affiliation(s)
- Dattatray A Pethsangave
- Department of Dyestuff Technology, Institute of Chemical Technology , Matunga, Mumbai 400 019, India
| | - Rahul V Khose
- Department of Dyestuff Technology, Institute of Chemical Technology , Matunga, Mumbai 400 019, India
| | - Pravin H Wadekar
- Department of Dyestuff Technology, Institute of Chemical Technology , Matunga, Mumbai 400 019, India
| | - Surajit Some
- Department of Dyestuff Technology, Institute of Chemical Technology , Matunga, Mumbai 400 019, India
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