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Kizhepat S, Rasal AS, Chodankar NR, Demissie GG, Dwivedi KA, Dirersa WB, Chiang CY, Chang JY. Optimizing Energy Solutions: Mott-Schottky Engineered 1D/3D CoWO 4(OH) 2·H 2O/MoS 2 Heterostructure for Advanced Energy Storage and Conversion Application. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404954. [PMID: 39314023 DOI: 10.1002/smll.202404954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 09/13/2024] [Indexed: 09/25/2024]
Abstract
Heterostructure engineering offers a powerful approach to creating innovative electrocatalysts. By combining different materials, it can achieve synergistic effects that enhance both charge storage and electrocatalytic activity. In this work, it is capitalized on this concept by designing a 1D/3D CoWO4(OH)2·H2O/molybdenum disulfide (CTH/MoS2) heterostructure. It is achieved this by in situ depositing 3D MoS2 nanoflowers on 1D CTH nanorods. To explore the impact of precursor choice, various sulfur (S) sources is investigated. Interestingly, the S precursor influenced the dimensionality of the MoS2 component. For example, L-cysteine (L-cys), and glutathione (GSH) resulted in 0D morphologies, thiourea (TU) led to a 2D structure, and thioacetamide (TAA) yielded a desirable 3D architecture. Notably, the 1D/3D CTH/MoS2-TAA heterostructure exhibited exceptional performance in both supercapacitors (SCs) and quantum dot-sensitized solar cells (QDSSCs). This achievement can be attributed to several factors: the synergetic effect between 1D CTH and 3D MoS2, improved accessibility due to the multi-dimensional structure, and a tailored electronic structure facilitated by the Mott-Schottky (M-S) interaction arising from the different material Fermi levels. This interaction further enhances conductivity, ultimately leading to the observed high specific capacity in SCs (154.44 mAh g-1 at 3 mA cm-2) and remarkable photovoltaic efficiency in QDSSCs (6.48%).
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Affiliation(s)
- Shamsa Kizhepat
- Nano Chemistry Lab, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Akash S Rasal
- Nano Chemistry Lab, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Nilesh R Chodankar
- Department of Mechanical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, UAE
| | - Girum Getachew Demissie
- Nano Chemistry Lab, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Kavya Arun Dwivedi
- Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Worku Batu Dirersa
- Nano Chemistry Lab, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Chia-Ying Chiang
- Sustainable Engineering Lab., Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
| | - Jia-Yaw Chang
- Nano Chemistry Lab, Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan
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2
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Nguyen DN, Fadel M, Chenevier P, Artero V, Tran PD. Water-Splitting Artificial Leaf Based on a Triple-Junction Silicon Solar Cell: One-Step Fabrication through Photoinduced Deposition of Catalysts and Electrochemical Operando Monitoring. J Am Chem Soc 2022; 144:9651-9660. [PMID: 35623012 DOI: 10.1021/jacs.2c00666] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Solar hydrogen generation via water splitting using a monolithic photoelectrochemical cell, also called artificial leaf, could be a powerful technology to accelerate the transition from fossil to sustainable energy sources. Identification of scalable methods for the fabrication of monolithic devices and gaining insights into their operating mode to identify solutions to improve performance and stability represent great challenges. Herein, we report on the one-step fabrication of a CoWO|ITO|3jn-a-Si|Steel|CoWS monolithic device via the simple photoinduced deposition of CoWO and CoWS as oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalyst layers, respectively, onto an illuminated ITO|3jn-a-Si|Steel solar cell using a single-deposition bath containing the [Co(WS4)2]2- complex. In a pH 7 phosphate buffer solution, the best device achieved a solar-to-hydrogen conversion yield of 1.9%. Evolution of the catalyst layers and that of the 3jn-a-Si light-harvesting core during the operation of the monolithic device are examined by conventional tools such as scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and inductively coupled plasma optical emission spectroscopy (ICP-OES) together with a bipotentiostat measurement. We demonstrate that the device performance degrades due to the partial dissolution of the catalyst. Still, this degradation is healable by simply adding [Co(WS4)2]2- to the operating solution. However, modifications on the protecting indium-doped tin oxide (ITO) layer are shown to initiate irreversible degradation of the 3jn-a-Si light-harvesting core, resulting in a 10-fold decrease of the performances of the monolithic device.
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Affiliation(s)
- Duc N Nguyen
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi 100000, Vietnam.,Université Grenoble Alpes, CNRS, CEA; IRIG; Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, Grenoble 38000, France
| | - Mariam Fadel
- Université Grenoble Alpes, CNRS, CEA; IRIG; Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, Grenoble 38000, France
| | - Pascale Chenevier
- Université Grenoble Alpes, CNRS, CEA, IRIG; SyMMES, 17 rue des Martyrs, Grenoble 38000, France
| | - Vincent Artero
- Université Grenoble Alpes, CNRS, CEA; IRIG; Laboratoire de Chimie et Biologie des Métaux, 17 rue des Martyrs, Grenoble 38000, France
| | - Phong D Tran
- University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi 100000, Vietnam
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3
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Madhu R, Karmakar A, Kumaravel S, Sankar SS, Bera K, Nagappan S, Dhandapani HN, Kundu S. Revealing the pH-Universal Electrocatalytic Activity of Co-Doped RuO 2 toward the Water Oxidation Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:1077-1091. [PMID: 34951298 DOI: 10.1021/acsami.1c20752] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Electrocatalytic water splitting has gained vast attention in recent decades for its role in catalyzing hydrogen production effectively as an alternative to fossil fuels. Moreover, the designing of highly efficient oxygen evolution reaction (OER) electrocatalysts across the universal pH conditions was more challengeable as in harsh anodic potentials, it questions the activity and stability of the concerned catalyst. Generally, geometrical engineering and electronic structural modulation of the catalyst can effectively boost the OER activity. Herein, a Co-doped RuO2 nanorod material is developed and used as an OER electrocatalyst at different pH conditions. Co-RuO2 exhibits a lower overpotential value of 238 mV in an alkaline environment (1 M KOH) with a Tafel slope value of 48 mV/dec. On the other hand, in acidic, neutral, and near-neutral environments, it required overpotentials of 328, 453, and 470 mV, respectively, to attain a 10 mA/cm2 current density. It is observed that doping of Co into the RuO2 could synergistically increase the active sites with the enhanced electrophilic nature of Ru4+ to accelerate OER in all of the pH ranges. This study finds the applicability of earth-abundant-based metals like Co to be used in universal pH conditions with a simple doping technique. Further, it assured the stable nature in all pH electrolytes and needs to be further explored with other metals in the future.
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Affiliation(s)
- Ragunath Madhu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Arun Karmakar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Sangeetha Kumaravel
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Selvasundarasekar Sam Sankar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Krishnendu Bera
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Sreenivasan Nagappan
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Hariharan N Dhandapani
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
| | - Subrata Kundu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, Tamil Nadu 630003, India
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Liu J, Li H, Cai J, Liu J, Liu Y, Sun Z, He X, Qu D, Li X. Enhanced oxygen evolution performance by partial phase transformation of cobalt/nickel carbonate hydroxide nanosheet arrays in Fe-containing alkaline electrolyte. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01558c] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we employ a partial phase conversion strategy to transform cobalt/nickel carbonate hydroxide (CoxNiyCH) nanosheet arrays in Fe-containing KOH electrolyte. The optimized sample exhibits a remarkable electrocatalytic activity (η50 =...
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5
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Madhu R, Karmakar A, Karthick K, Sam Sankar S, Kumaravel S, Bera K, Kundu S. Metallic Gold-Incorporated Ni(OH) 2 for Enhanced Water Oxidation in an Alkaline Medium: A Simple Wet-Chemical Approach. Inorg Chem 2021; 60:15818-15829. [PMID: 34601871 DOI: 10.1021/acs.inorgchem.1c02571] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of a highly efficient electrocatalyst for the oxygen evolution reaction (OER) with a lower overpotential and high intrinsic activity is highly challenging owing to its sluggish kinetic behavior. As an alternative to the state-of-the-art OER catalyst, recently, transition-metal-based hydroxide materials have been shown to play important roles for the same. Owing to the high earth abundance of various Ni-based hydroxide and its derivatives, these are known to be highly studied materials for the OER. Herein, we report a simple wet-chemical synthesis of metallic gold-incorporated (by varying the concentration of Au3+ ions) Ni(OH)2 nanosheets as an active and stable electrocatalyst for the OER in 1 M KOH medium. The Au-Ni(OH)2 (2) catalyst demanded a low overpotential of 288 mV to attain a geometric current density of 10 mA/cm2 with a lower Tafel value of 55 mV/dec compared to bare Ni(OH)2 with a lower mass loading of only 0.1 mg/cm2. Tafel slope analysis reveals that the incorporation of metallic gold on the hydroxide surfaces could alter the mechanistic pathways of the overall OER reaction. It has been proposed that the incorporation of metallic gold over the Ni(OH)2 surfaces led to a change in the electronic structure of the electroactive nickel sites (Jahn-Teller distortion), which favors the OER by electronic aspects.
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Affiliation(s)
- Ragunath Madhu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Arun Karmakar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Kannimuthu Karthick
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Selvasundarasekar Sam Sankar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Sangeetha Kumaravel
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Krishnendu Bera
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Subrata Kundu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
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6
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Vernekar D, Dayyan M, Ratha S, Rode CV, Haider M, Khan TS, Jagadeesan D. Direct Oxidation of Cyclohexane to Adipic Acid by a WFeCoO(OH) Catalyst: Role of Brønsted Acidity and Oxygen Vacancies. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01464] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Dnyanesh Vernekar
- Chemical Engineering and Process Development Division, CSIR National Chemical Laboratory, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - Mohammad Dayyan
- Chemical Engineering and Process Development Division, CSIR National Chemical Laboratory, Pune 411008, Maharashtra, India
| | - Satyajit Ratha
- School of Basic Sciences, Indian Institute of Technology Bhubaneshwar, Bhubaneswar 752050, Odisha, India
| | - Chandrashekhar V. Rode
- Chemical Engineering and Process Development Division, CSIR National Chemical Laboratory, Pune 411008, Maharashtra, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, Uttar Pradesh, India
| | - M.Ali Haider
- Department of Chemical Engineering, Indian Institute of Technology Delhi, New Delhi 110016, Delhi, India
| | - Tuhin Suvra Khan
- Light Stock Processing Division, CSIR Indian Institute of Petroleum, Dehradun 248005, Uttarakhand, India
| | - Dinesh Jagadeesan
- Department of Chemistry, Indian Institute of Technology Palakkad, Palakkad 678 557, Kerala, India
- Environmental Sciences and Sustainable Engineering Center (ESSENCE), Indian Institute of Technology, Palakkad 678 557, Kerala, India
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7
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Madhu R, Karmakar A, Karthick K, Kumaravel S, Sam Sankar S, Prajapati D, Kundu S. Fabrication of highly stable platinum organosols over DNA-scaffolds for enriched catalytic and SERS applications. Dalton Trans 2021; 50:7198-7211. [PMID: 33899068 DOI: 10.1039/d1dt00653c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of nanomaterials (NMs) in various applications via multidisciplinary approaches is highly necessary in this era. In this line, the impact of noble metals in organic media for both catalysis and surface-enhanced Raman spectroscopic (SERS) studies is most interesting and also has a wider scope in various fields. Nonetheless, the catalytic reduction of aromatic nitro compounds is difficult with poor solubility in aqueous media, and reduction also is less feasible in the absence of noble metal-based catalysts. Thus, the choice of noble metal-based catalysts for the catalytic reduction of nitro compounds in organic media is one of the emerging methods with high selectivity towards products. Moreover, the superior catalytic activity of Pt NPs provides a higher rate constant value with a low dielectric constant of organic solvents. Herein, for the first time, we synthesised highly stable metallic Pt nanoparticles (NPs) anchored on bio-scaffold deoxyribonucleic acid (DNA) for two different applications. The advantage of highly controlled nucleation of NPs over DNA in organic media results in a spherical morphology with a particle diameter of 2.47 ± 2.11 nm and 2.84 ± 1.14 nm. A stable colloidal solution of Pt NPs was prepared by a simple wet chemical sodium borohydride reduction method within 15 minutes from the start of the reaction. Two sets of Pt NPs were synthesised by varying the molar ratio of the concentration of DNA to PtCl4 concentration and were named Pt@DNA (0.05 M) and Pt@DNA (0.06 M), respectively. The prepared Pt@DNA was effectively studied for two potential applications such as the SERS studies and catalytic reduction of nitro compounds. In catalysis, a higher catalytic rate was observed in the case of 4-nitrophenol (4-NP) at a rate of 8.43 × 10-2 min-1. In the SERS study, the reduction of the interparticle distance to below 5 nm facilitates the creation of a large number of hot spots for probe detection. Here, we used 10-3 M methylene blue (MB) as a probe molecule, and the enhancement factor (EF) value was calculated at different concentrations ranging from 10-3 M to 10-6 M. The highest enhancement factor (EF) value obtained was 2.91 × 105 for Pt@DNA (0.05 M). The as-synthesised stable Pt@DNA organosol can be exploited for other potential applications related to energy, sensor and medicinal fields in the near future.
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Affiliation(s)
- Ragunath Madhu
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arun Karmakar
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kannimuthu Karthick
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sangeetha Kumaravel
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Selvasundarasekar Sam Sankar
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Devendra Prajapati
- Central Instrumentation Facility (CIF), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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8
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Karmakar A, Karthick K, Sankar SS, Kumaravel S, Ragunath M, Kundu S. Surface Decoration of DNA-Aided Amorphous Cobalt Hydroxide via Ag + Ions as Binder-Free Electrodes toward Electrochemical Oxygen Evolution Reaction. Inorg Chem 2021; 60:2680-2693. [PMID: 33534570 DOI: 10.1021/acs.inorgchem.0c03569] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Out of various available methods, generation of hydrogen by electrocatalytic water splitting is the most accepted one which consists of two half-cell reactions, viz, oxygen evolution reaction (OER) at the anode and hydrogen evolution reaction at the cathode. OER is a complex four-electron transfer process, and to sustain the spontaneous generation of hydrogen at the cathode, it is urgent to develop some earth-abundant, low-cost electrode materials. Recently, use of cobalt-based hydroxide as the electrode substrate has taken much consideration and has been fabricated over various substrates. Because of various structural disorders, internal resistance, and dependence on the electrode, the binder substrate makes their applications limited. Here, in this work, to remove structural disorder and to increase electrical conductivity, we have incorporated silver ions into amorphous Co(OH)2, which turns to be a highly active OER electrocatalyst. Also, for the first time, we have developed hydroxide-based materials by using DNA as a stabilizer, and most importantly, using DNA gives an immense opportunity to run long-term OER applications without using an external binder such as nafion. Moreover, for the first time, these DNA-based materials were coated on nickel foam mainly to eliminate the low conductive nature of Ag2O. The synthesized catalyst showed a very high OER activity, and to reach 50 mA/cm2 current density, it needs only 260 mV as overpotential. The amorphous nature of hydroxide-based materials gives a higher opportunity toward the electrolyte to bind on the surface of a catalyst to run the OER with less applied overpotentials.
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Affiliation(s)
- Arun Karmakar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Kannimuthu Karthick
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Selvasundarasekar Sam Sankar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Sangeetha Kumaravel
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Madhu Ragunath
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Subrata Kundu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.,Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
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9
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Kumaravel S, Saravanan KK, Evangeline BE, Niharika V, Jayakumar R, Kundu S. DNA-based low resistance palladium nano-spheres for effective hydrogen evolution reaction. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00986a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Highly stable and less resistance Pd/DNA NSs are designed for HER in acidic medium and require a low overpotential (η10) of 79 mV. DNA plays multiple roles such as stabilizer, structure-directing agent and binder in the fabrication of electrodes.
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Affiliation(s)
- Sangeetha Kumaravel
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Karthik Kumaran Saravanan
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Bariki Eunice Evangeline
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Vennala Niharika
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Rishivandhiga Jayakumar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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10
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Kumaravel S, Thiruvengetam P, Karthick K, Sankar SS, Karmakar A, Kundu S. Green and sustainable route for oxidative depolymerization of lignin: New platform for fine chemicals and fuels. Biotechnol Prog 2020; 37:e3111. [PMID: 33336509 DOI: 10.1002/btpr.3111] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/26/2020] [Accepted: 12/08/2020] [Indexed: 01/08/2023]
Abstract
Depolymerization of lignin biomass to its value-added chemicals and fuels is pivotal for achieving the goals for sustainable society, and therefore has acquired key interest among the researchers worldwide. A number of distinct approaches have evolved in literature for the deconstruction of lignin framework to its mixture of complex constituents in recent decades. Among the existing practices, special attention has been devoted for robust site selective chemical transformation in the complex structural frameworks of lignin. Despite the initial challenges over a period of time, oxidation and oxidative cleavage process of aromatic building blocks of lignin biomass toward the fine chemical synthesis and fuel generation has improved substantially. The development has improved in terms of cost effectiveness, milder reaction conditions, and purity of compound individuals. These aforementioned oxidative protocols mainly involve the breaking of C-C and C-O bonds of complex lignin frameworks. More precisely in the line with environmentally friendly greener approach, the catalytic oxidation/oxidative cleavage reactions have received wide spread interest for their mild and selective nature toward the lignin depolymerization. This mini-review aims to provide an overview of recent developments in the field of oxidative depolymerization of lignin under greener and environmentally benign conditions. Also, these oxidation protocols have been discussed in terms of scalability and recyclability as catalysts for different fields of applications.
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Affiliation(s)
- Sangeetha Kumaravel
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630003, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | | | - Kannimuthu Karthick
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630003, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Selvasundarasekar Sam Sankar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630003, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Arun Karmakar
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630003, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Subrata Kundu
- Electrochemical Process Engineering (EPE) Division, CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi, 630003, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Kumaravel S, Kumar MP, Thiruvengetam P, Bandla N, Sankar SS, Ravichandran S, Kundu S. Intervening Bismuth Tungstate with DNA Chain Assemblies: A Perception toward Feedstock Conversion via Photoelectrocatalytic Water Splitting. Inorg Chem 2020; 59:14501-14512. [PMID: 32924460 DOI: 10.1021/acs.inorgchem.0c02296] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An advanced approach with DNA-mediated bismuth tungstate (Bi2WO6) one-dimensional (1-D) nanochain assemblies for hydrogen production with 5-fold enhanced photoelectrochemical (PEC) water splitting reaction is presented. The creation of new surface states upon DNA modification mediates the electron transfer in a facile manner for a better PEC process. The UV-Vis-DRS analysis results a red shift in the optical absorption phenomenon with the interference of DNA modification on Bi2WO6, and, thus, the band gap was tuned from 3.05 eV to 2.71 eV. The applied bias photon-to-current efficiency (ABPE) was calculated and shows a maximum for the Bi2WO6@DNA-2 (25.22 × 10-4%), compared to pristine Bi2WO6 (7.76 × 10-4%). Furthermore, the idea of practical utility of produced hydrogen from PEC is established for the first time with photocatalytic feedstock conversion to platform chemicals using cinnamaldehyde, 2-hydroxy-1-phenylethanone, and 2-(3-methoxyphenoxy)-1-phenylethanone in large scale by hydrogenation and/or hydrogenolysis reactions under eco-friendly green conditions with external hydrogen pressure in an aqueous mixture. Also, the recyclability experiment delivered good yields, which further confirm the robustness of the developed catalyst.
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Affiliation(s)
- Sangeetha Kumaravel
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - M Praveen Kumar
- Electro Inorganic Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi-630003, Tamil Nadu, India
| | | | - Nischala Bandla
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Selvasundarasekar Sam Sankar
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Subbiah Ravichandran
- Electro Inorganic Division, CSIR-Central Electrochemical Research Institute (CSIR-CECRI), Karaikudi-630003, Tamil Nadu, India
| | - Subrata Kundu
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi-630003, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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Kumaravel S, Karthick K, Thiruvengetam P, Johny JM, Sankar SS, Kundu S. Tuning Cu Overvoltage for a Copper–Telluride System in Electrocatalytic Water Reduction and Feasible Feedstock Conversion: A New Approach. Inorg Chem 2020; 59:11129-11141. [DOI: 10.1021/acs.inorgchem.0c01648] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sangeetha Kumaravel
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghazizbad 201002, India
| | - Kannimuthu Karthick
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghazizbad 201002, India
| | | | - Jinta Merlin Johny
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Selvasundarasekar Sam Sankar
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghazizbad 201002, India
| | - Subrata Kundu
- Materials Electrochemistry Division (MED), CSIR-Central Electrochemical Research Institute (CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghazizbad 201002, India
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