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Atchudan R, Perumal S, Jebakumar Immanuel Edison TN, Aldawood S, Vinodh R, Sundramoorthy AK, Ghodake G, Lee YR. Facile synthesis of novel molybdenum disulfide decorated banana peel porous carbon electrode for hydrogen evolution reaction. CHEMOSPHERE 2022; 307:135712. [PMID: 35843438 DOI: 10.1016/j.chemosphere.2022.135712] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/24/2022] [Accepted: 07/11/2022] [Indexed: 06/15/2023]
Abstract
Hydrogen is one of the cleanest renewable and environmentally friendly energy resource that can be generated through water splitting. However, hydrogen evolution occurs at high overpotential, and efficient hydrogen evolution catalysts are desired to replace state-of-the-art catalysts such as platinum. In the present work, a novel molybdenum disulfide decorated banana peel porous carbon (MoS2@BPPC) catalyst has been developed using banana peel carbon and molybdenum disulfide (MoS2) for hydrogen evolution reaction (HER). Banana peel porous carbon (BPPC) was initially synthesized from the banana peel (biowaste) by a simple carbonization method. Subsequently, 20 wt% of bare MoS2 was distributed on the pristine BPPC matrix using the dry-impregnation method. The resulting MoS2@BPPC composites were systematically investigated to determine the morphology and structure. Finally, using a three-electrode cell system, pristine BPPC, bare MoS2, and MoS2@BPPC composite were used as HER electrocatalysts. The developed MoS2@BPPC composite showed greater HER activity and possessed excellent stability in the acid solution, including an overpotential of 150 mV at a current density of -10 mA cm-2, and a Tafel slope of 51 mV dec-1. This Tafel study suggests that the HER takes place by Volmer-Heyrovsky mechanism with a rate-determining Heyrovsky step. The excellent electrochemical performance of MoS2@BPPC composite for HER can be ascribed to its unique porous nanoarchitecture. Further, due to the synergetic effect between MoS2 and porous carbon. The HER activity using the MoS2@BPPC electrode advises that the prepared catalyst may hold great promise for practical applications.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Suguna Perumal
- Department of Chemistry, Sejong University, Seoul, 143-747, Republic of Korea
| | | | - S Aldawood
- Department of Physics and Astronomy, College of Science, P.O. BOX 2455, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Rajangam Vinodh
- School of Electrical and Computer Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Ashok K Sundramoorthy
- Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai, 600077, Tamil Nadu, India
| | - Gajanan Ghodake
- Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, 10326, Gyeonggi-do, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Atchudan R, Perumal S, Edison TNJI, Albasher G, Sundramoorthy AK, Vinodh R, Lee YR. Lotus-biowaste derived sulfur/nitrogen-codoped porous carbon as an eco-friendly electrocatalyst for clean energy harvesting. ENVIRONMENTAL RESEARCH 2022; 214:113910. [PMID: 35870499 DOI: 10.1016/j.envres.2022.113910] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 06/15/2023]
Abstract
Recent research is focused on biomass-derived porous carbon materials for energy harvesting (hydrogen evolution reaction) because of their cost-effective synthesis, enriched with heteroatoms, lightweight, and stable properties. Here, the synthesis of porous carbon (PC) materials from lotus seedpod (LP) and lotus stem (LS) is reported by the pyrolysis method. The porous and graphitic structure of the prepared LP-PC and LS-PC materials were confirmed by field emission scanning electron microscopy, transmission electron microscopy with selected area electron diffraction, X-ray diffraction, and nitrogen adsorption-desorption measurements. Heteroatoms in LP-PC and LS-PC materials were investigated by attenuated total reflection-Fourier transform infrared and X-ray photoelectron spectroscopy. The specific surface area of LP-PC and LS-PC were calculated as 457 and 313 m2 g-1, respectively. Nitrogen and sulfur enriched LP-PC and LS-PC materials were found to be effective electrocatalysts for hydrogen evolution reactions. LP-PC catalyst showed a very low overpotential of 111 mV with the Tafel slope of 69 mV dec-1, and LS-PC catalyst achieved a Tafel slope of 85 mV dec-1 with a low overpotential of 135 mV. This work is expected to be extended for the development of biomass as a sustainable porous carbon electrocatalyst with a tunable structure, elements, and electronic properties. Furthermore, preparing carbon materials from the biowaste and applying clean energy harvesting might reduce environmental pollution.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Suguna Perumal
- Department of Chemistry, Sejong University, Seoul, 143747, Republic of Korea.
| | | | - Gadah Albasher
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ashok K Sundramoorthy
- Department of Prosthodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Velappanchavadi, Chennai, 600077, Tamil Nadu, India
| | - Rajangam Vinodh
- School of Electrical and Computer Engineering, Pusan National University, Busan, 46241, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Niu J, Wang H, Chen J, Chen X, Han X, Liu H. Bio-inspired zwitterionic copolymers for antifouling surface and oil-water separation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127016] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Perumal S, Atchudan R, Cheong IW. Recent Studies on Dispersion of Graphene-Polymer Composites. Polymers (Basel) 2021; 13:2375. [PMID: 34301133 PMCID: PMC8309616 DOI: 10.3390/polym13142375] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/16/2021] [Accepted: 07/17/2021] [Indexed: 12/23/2022] Open
Abstract
Graphene is an excellent 2D material that has extraordinary properties such as high surface area, electron mobility, conductivity, and high light transmission. Polymer composites are used in many applications in place of polymers. In recent years, the development of stable graphene dispersions with high graphene concentrations has attracted great attention due to their applications in energy, bio-fields, and so forth. Thus, this review essentially discusses the preparation of stable graphene-polymer composites/dispersions. Discussion on existing methods of preparing graphene is included with their merits and demerits. Among existing methods, mechanical exfoliation is widely used for the preparation of stable graphene dispersion, the theoretical background of this method is discussed briefly. Solvents, surfactants, and polymers that are used for dispersing graphene and the factors to be considered while preparing stable graphene dispersions are discussed in detail. Further, the direct applications of stable graphene dispersions are discussed briefly. Finally, a summary and prospects for the development of stable graphene dispersions are proposed.
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Affiliation(s)
- Suguna Perumal
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Daegu 41566, Korea
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea;
| | - Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea;
| | - In Woo Cheong
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Daegu 41566, Korea
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Perumal S, Gangadaran P, Bae YW, Ahn BC, Cheong IW. Noncovalent Functionalized Graphene Nanocarriers from Graphite for Treating Thyroid Cancer Cells. ACS Biomater Sci Eng 2021; 7:2317-2328. [PMID: 33872491 DOI: 10.1021/acsbiomaterials.1c00067] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Here, biocompatible graphene (G) nanocarriers decorated with iron oxide nanoparticles (IONPs) were prepared using 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) and poly(ethylene glycol) monomethacrylate (PEGMA). For this, we report the use of graphite directly instead of graphene oxide or reduced graphene oxide. Graphene nanocarrier (in situ GIOPMPC) was prepared in one-pot by in situ copolymerization of MPC and PEGMA monomers in the presence of IONPs and G. GIOPMCP nanocarriers were prepared by sonication using PMPC-co-PEGMA copolymers in the presence of IONPs and G. The prepared graphene nanocarriers were thoroughly characterized by various techniques. The analyses confirmed the successful preparation of nanocarriers with even distributions of PMPC-co-PEGMA and IONPs on surface G. The IONPs were coordinated through the phosphate groups in PMPC. Excellent dispersibility of the graphene nanocarriers in water enabled drug delivery applications. The prepared nanocarriers did not show significant cytotoxicity to the thyroid cancer cells up to 8 mg/mL (IC50: 38.26 mg/mL). Thyroid cancer cells were stably transduced with a bioluminescent reporter to monitor cell cytotoxicity. Doxorubicin (DOX) was loaded onto in situ GIOPMPC nanocarriers at two different concentrations and was successfully delivered to thyroid cancer cells, resulting in strong cytotoxicity. Moreover, signaling mechanistic analyses showed apoptosis activation, inhibition of anti-apoptosis and proliferation, and increased DNA damage in the thyroid cancer cells.
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Affiliation(s)
- Suguna Perumal
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 41566, Republic of Korea
| | - Prakash Gangadaran
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea.,BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - Ye Won Bae
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 41566, Republic of Korea
| | - Byeong-Cheol Ahn
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea.,BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Sciences, School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea.,Department of Nuclear Medicine, Kyungpook National University Hospital, Daegu 41944, Republic of Korea
| | - In Woo Cheong
- Department of Applied Chemistry, School of Engineering, Kyungpook National University, Buk-gu, Daehak-ro 80, Daegu 41566, Republic of Korea
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Yoon IH, Yoon SB, Sihn Y, Choi MS, Jung CH, Choi WK. Stabilizing decontamination foam using surface-modified silica nanoparticles containing chemical reagent: foam stability, structures, and dispersion properties. RSC Adv 2021; 11:1841-1849. [PMID: 35424110 PMCID: PMC8693613 DOI: 10.1039/d0ra07644a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/30/2020] [Indexed: 12/20/2022] Open
Abstract
The stabilization of decontamination foams containing a chemical reagent is a crucial requirement for their use in the decontamination of nuclear power plants. We have investigated the effects on decontamination foam stability of adding silica nanoparticles (NPs) modified with various functional groups, namely propyl (–CH3), amine (–NH2), and thiol (–SH) groups. The surface properties of these silica NPs were characterized with ATR-FTIR, solid NMR, and TGA analyses. We also established that the agglomeration in such foams of the amine-modified silica NPs is weaker than that of the other modified silica NPs due to their thorough dispersion in the liquid film. Further, the foam containing amine-modified silica NPs was found to be stable for 60 min at a pH of 2, i.e. under decontamination conditions. The bubble structure analysis showed that this decontamination foam has a bubble count that is approximately 5–8 times higher than the foams containing NPs modified with the other functional groups, which indicates that the decontamination foam with amine-modified silica NPs has the best foam structure of the three investigated foams. The well-dispersed and smaller amine-modified silica NPs enhance the foam stability by providing a barrier between the gas bubbles and delaying their coalescence. In contrast, the thiol- and propyl-modified silica NPs form aggregates with large diameters that reduce the maximum capillary pressure of coalescence and hence decrease the foam stability. The stabilization of decontamination foams containing a chemical reagent is a crucial requirement for their use in the decontamination of nuclear power plants.![]()
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Affiliation(s)
- In-Ho Yoon
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute 111, Daedeok-daero 989 Beon-gil, Yuseong-gu Daejeon 305-353 Republic of Korea +82-42-868-8281
| | - Suk Bon Yoon
- Decommissioning Research Institute Preparation Unit, Korea Hydro & Nuclear Power Co., Ltd. (KHNP) Gyeongju 38120 Republic of Korea
| | - Youngho Sihn
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute 111, Daedeok-daero 989 Beon-gil, Yuseong-gu Daejeon 305-353 Republic of Korea +82-42-868-8281
| | - Man-Soo Choi
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute 111, Daedeok-daero 989 Beon-gil, Yuseong-gu Daejeon 305-353 Republic of Korea +82-42-868-8281
| | - Chong-Hun Jung
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute 111, Daedeok-daero 989 Beon-gil, Yuseong-gu Daejeon 305-353 Republic of Korea +82-42-868-8281
| | - Wang-Kyu Choi
- Decommissioning Technology Research Division, Korea Atomic Energy Research Institute 111, Daedeok-daero 989 Beon-gil, Yuseong-gu Daejeon 305-353 Republic of Korea +82-42-868-8281
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Patil R, Bahadur P, Tiwari S. Dispersed graphene materials of biomedical interest and their toxicological consequences. Adv Colloid Interface Sci 2020; 275:102051. [PMID: 31753296 DOI: 10.1016/j.cis.2019.102051] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/04/2019] [Accepted: 10/17/2019] [Indexed: 02/07/2023]
Abstract
Graphene is one-atom thick nanocarbon displaying a unique honeycomb structure and extensive conjugation. In addition to high surface area to mass ratio, it displays unique optical, thermal, electronic and mechanical properties. Atomic scale tunability of graphene has attracted immense research interest with a prospective utility in electronics, desalination, energy sectors, and beyond. Its intrinsic opto-thermal properties are appealing from the standpoint of multimodal drug delivery, imaging and biosensing applications. Hydrophobic basal plane of sheets can be efficiently loaded with aromatic molecules via non-specific forces. With intense biomedical interest, methods are evolving to produce defect-free and dispersion stable sheets. This review summarizes advancements in synthetic approaches and strategies of stabilizing graphene derivatives in aqueous medium. We have described the interaction of colloidal graphene with cellular and sub-cellular components, and subsequent physiological signaling. Finally, a systematic discussion is provided covering toxicological challenges and possible solutions on utilizing graphene formulations for high-end biomedical applications.
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Nitrogen-doped reduced graphene oxide as a sensing platform for detection of guanine and application in cell necrosis. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00856-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Prabhu SM, Khan A, Hasmath Farzana M, Hwang GC, Lee W, Lee G. Synthesis and characterization of graphene oxide-doped nano-hydroxyapatite and its adsorption performance of toxic diazo dyes from aqueous solution. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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