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Das KK, Mohanty UA, Paramanik L, Sahoo DP, Parida K. Facile fabrication of B-rGO/ZnFe 2O 4 p-n heterojunction-based S-scheme exciton engineering for photocatalytic Cr(vi) reduction: kinetics, influencing parameters and detailed mechanism. RSC Adv 2024; 14:20312-20327. [PMID: 38919280 PMCID: PMC11197843 DOI: 10.1039/d4ra03049d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 06/12/2024] [Indexed: 06/27/2024] Open
Abstract
The fabrication of p-n heterostructures was found to be an effective strategy to stimulate the interfacial exciton shipment and photocatalytic reactions. Herein, we report a p-n junction synthesized by combining p-type boron-doped reduced graphene oxide (B-rGO) with an n-type ZnFe2O4 semiconducting material for Cr(vi) reduction under LED light irradiation. The band structures of ZnFe2O4 and B-rGO were evaluated using UV-vis spectroscopy, Mott-Schottky (M-S) plots and photocurrent studies. The results indicated that ZnFe2O4 and B-rGO exhibit a conventional type-II charge transfer, and the Fermi-level (E F) of ZnFe2O4 was found to be much lower than that of the B-rGO material. Based on these investigations, an S-scheme charge-migration pathway was suggested and demonstrated by the photocatalytic activity and nitroblue tetrazolium (NBT) chloride experiments. The optimal 2 wt% B-rGO/ZnFe2O4 heterojunction exhibits the highest photocatalytic performance, i.e. 84% of Cr(vi) reduction in 90 min under 20 W LED light irradiation with a rate constant of 0.0207 min-1, which was 4.6- and 2.15-fold greater than that of ZnFe2O4 (ZnF) and B-rGO, respectively. The intimate interfacial contact, excellent photon-harvesting properties, effective exciton segregation and availability of active electrons are some factors responsible for enhanced photocatalytic Cr(vi) reduction. In order to fulfill the demand of applied waste-water management, the influences of various photocatalyst amounts, pH values and co-exiting ions on photocatalytic activities were evaluated. Finally, this work provides a way to fabricate S-scheme-based p-n-heterostructures for photocatalytic wastewater treatment.
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Affiliation(s)
- Kundan Kumar Das
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University) Bhubaneswar-751030 Odisha India +91-674-2581637 +91-674-2379425
| | - Upali Aparajita Mohanty
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University) Bhubaneswar-751030 Odisha India +91-674-2581637 +91-674-2379425
| | - Lekha Paramanik
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University) Bhubaneswar-751030 Odisha India +91-674-2581637 +91-674-2379425
| | - Dipti Prava Sahoo
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University) Bhubaneswar-751030 Odisha India +91-674-2581637 +91-674-2379425
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University) Bhubaneswar-751030 Odisha India +91-674-2581637 +91-674-2379425
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Priyadarshini N, Mansingh S, Das KK, Garg R, Sumit, Parida K, Parida K. Macroscopic Spontaneous Piezopolarization and Oxygen-Vacancy Coupled Robust NaNbO 3/FeOOH Heterojunction for Pharmaceutical Drug Degradation and O 2 Evolution: Combined Experimental and Theoretical Study. Inorg Chem 2024; 63:256-271. [PMID: 38112438 DOI: 10.1021/acs.inorgchem.3c03085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Prompt recombination of photoproduced charges in bulk and surface of a photocatalyst significantly impedes catalytic efficiency. To address these challenges, FeOOH nanorods (NRs) anchored NaNbO3 (NNO) piezoelectric microcubes (MCs) have been fabricated for ciprofloxacin (CIP) degradation and oxygen evolution through water splitting by coupling macroscopic spontaneous piezoelectric polarization and a built-in electric field. The local electric field induced by surface oxygen vacancies (Ovs) and orientation of FeOOH NRs over NNO MCs afford the polarization electric field a significant boost, driving the quick separation/migration of charge carriers from bulk to the surface. The polarized NNO/FeOOH composite with ample Ovs demonstrates an outstanding piezophotocatalytic CIP degradation of 93% in 1 h, higher than pristine materials (NNO and FeOOH), and a high O2 evolution rate of 1155 μmol h-1. The effect of piezoelectric polarization on the catalytic activity is supplemented by theoretical simulations. This work offers an avenue for selective pollutant remediation and water splitting through the rational design of piezoelectric polarization-mediated heterostructure systems with surface Ovs.
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Affiliation(s)
- Newmoon Priyadarshini
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha 751030, India
| | - Sriram Mansingh
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha 751030, India
| | - Kundan Kumar Das
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha 751030, India
| | - Romy Garg
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Mohali, Punjab 140306, India
| | - Sumit
- Accelerator Physics and Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Kaushik Parida
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh 247001, India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha 751030, India
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3
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Zhang J, Yue L, Zeng Z, Zhao C, Fang L, Hu X, Lin H, Zhao L, He Y. Preparation of NaNbO 3 microcube with abundant oxygen vacancies and its high photocatalytic N 2 fixation activity in the help of Pt nanoparticles. J Colloid Interface Sci 2023; 636:480-491. [PMID: 36652823 DOI: 10.1016/j.jcis.2023.01.049] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023]
Abstract
In this study, the photocatalytic N2 immobilization performance of NaNbO3 is enhanced via oxygen vacancy introduction and Pt loading. The designed Pt-loaded NaNbO3 with rich oxygen defects (Pt/O-NaNbO3) is synthesized by combining ion-exchange and photodeposition methods. Characterization result indicates that the O-NaNbO3 has hollow microcube morphology and higher surface area than NaNbO3. The introduced oxygen defects greatly affect the energy band structure. The band gap is slightly narrowed and the conduction band is raised, allowing O-NaNbO3 to generate electrons with strong reducibility. Moreover, the oxygen defects reduced the work function of NaNbO3, leading to increased charge separation in the bulk phase. The loaded Pt nanoparticles can further increase the surface charge separation via the formed Schottky barriers between Pt and O-NaNbO3, which was thought to be the primary cause of the increased photocatalytic activity. Additionally, the oxygen vacancies and metal Pt also contribute to the adsorption and activation of N2. Under the combined effect of the above changes, Pt/O-NaNbO3 presents much higher photoactivity than NaNbO3. The optimized NH3 production rate reaches 293.3 μmol/L g-1h-1 under simulated solar light, which is approximately 2.2 and 20.2 times higher than that of O-NaNbO3 and NaNbO3, respectively. This research offers a successful illustration of how to improve photocatalytic N2 fixation and may shed some light on how to design and construct efficient photocatalysts by combining several techniques.
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Affiliation(s)
- Jiayu Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Lin Yue
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Zhihao Zeng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Chunran Zhao
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Linjiang Fang
- Department of Arts and Sciences, University of Washington, Seattle, WA 98195, USA
| | - Xin Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China
| | - Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Leihong Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China.
| | - Yiming He
- Department of Materials Science and Engineering, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China; Key Laboratory of Solid State Optoelectronic Devices of Zhejiang Province, Zhejiang Normal University, Yingbin Road 688, Jinhua 321004, China.
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Kamari V, Sharma A, Kumar N, Sillanpää M, Makgwane PR, Ahmaruzzaman M, Hosseini-Bandegharaei A, Rani M, Chinnumuthu P. TiO2-CeO2 assisted heterostructures for photocatalytic mitigation of environmental pollutants: A comprehensive study on band gap engineering and mechanistic aspects. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Prusty D, Mansingh S, Parida KM. Synthesis of Z-schemes 0D–3D heterojunction bi-functional photocatalyst with ZnInCuS alloyed QDs supported BiOI MF for H 2O 2 production and N 2 fixation. Catal Sci Technol 2023. [DOI: 10.1039/d2cy02107b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Photocatalytic H2O2 and NH3 production on Zn–Cu–In–S QDs coupled with BiOI MFs via a Z-scheme charge transfer dynamic.
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Affiliation(s)
- Deeptimayee Prusty
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - Sriram Mansingh
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - K. M. Parida
- Centre for Nanoscience and Nanotechnology, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar-751030, Odisha, India
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6
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Madaan V, Mohan B, Bhankar V, Ranga R, Kumari P, Singh P, Sillanpää M, Kumar A, Solovev AA, Kumar K. Metal-Decorated CeO2 nanomaterials for photocatalytic degradation of organic pollutants. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Prusty D, Mansingh S, Priyadarshini N, Parida KM. Defect Control via Compositional Engineering of Zn-Cu-In-S Alloyed QDs for Photocatalytic H 2O 2 Generation and Micropollutant Degradation: Affecting Parameters, Kinetics, and Insightful Mechanism. Inorg Chem 2022; 61:18934-18949. [DOI: 10.1021/acs.inorgchem.2c02977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Deeptimayee Prusty
- Centre for Nanoscience and Nanotechnology, Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar751030, Odisha, India
| | - Sriram Mansingh
- Centre for Nanoscience and Nanotechnology, Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar751030, Odisha, India
| | - Newmoon Priyadarshini
- Centre for Nanoscience and Nanotechnology, Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar751030, Odisha, India
| | - K. M. Parida
- Centre for Nanoscience and Nanotechnology, Siksha “O” Anusandhan (Deemed to be University), Bhubaneswar751030, Odisha, India
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Guo Z, Wu Y, Sun C, Wang J, Li Q. Regulating polymerization degree of heptazines in carbon nitride with fumaric acid to enhance photocatalytic activity. CHEMOSPHERE 2022; 307:136210. [PMID: 36041526 DOI: 10.1016/j.chemosphere.2022.136210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 08/04/2022] [Accepted: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Carbon nitride (CN) has a wide range of applications in photocatalytic treatment of environmental pollution. One of key challenges in the field is to conveniently prepare CN with tunable band gap towards efficient pollution degradation, which can be overcome by regulating the polymerization degree of its heptazines. Herein, a facile and green strategy to construct CN through co-firing urea, melamine and fumaric acid was reported. By simply inducing appropriate amount of fumaric acid during amidation reaction between fumaric acid and amino groups, the distance between heptazines of CN could be modified to obtain optimized polymerization degree and morphology. Among the considered CN systems, the modulated CN sample with the doped ratio of 2.50: 0.50: 0.03 m urea/m melamine/m fumaric acid (CNF30) displayed remarkable photocatalytic ability due to the largest specific surface area, the lowest photoluminescence emission intensity, and narrowest band gap, which led to the highest 98.0% methyl orange degradation within 60 min under a 10 W lamp and room temperature with the harmless and valuable carboxylic acids products. This study provides a new sight for the design of photocatalysts with tunable band structure towards green and efficient photocatalytic degradation of environmental pollution.
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Affiliation(s)
- Zhenlong Guo
- College of Science, Beijing Forestry University, Beijing, 100083, China; College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Forest Food Processing and Safety, Beijing, 100083, China
| | - Yi Wu
- College of Science, Beijing Forestry University, Beijing, 100083, China; College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Forest Food Processing and Safety, Beijing, 100083, China
| | - Changxia Sun
- College of Science, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Forest Food Processing and Safety, Beijing, 100083, China
| | - Jiaqi Wang
- College of Science, Beijing Forestry University, Beijing, 100083, China.
| | - Qiang Li
- College of Science, Beijing Forestry University, Beijing, 100083, China; Beijing Key Laboratory of Forest Food Processing and Safety, Beijing, 100083, China.
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Nayak S, Parida K. Superlative photoelectrochemical properties of 3D MgCr-LDH nanoparticles influencing towards photoinduced water splitting reactions. Sci Rep 2022; 12:9264. [PMID: 35661140 PMCID: PMC9166737 DOI: 10.1038/s41598-022-13457-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 05/12/2022] [Indexed: 11/10/2022] Open
Abstract
In the present work, we report the synthesis of single system three-dimensional (3D) open porous structure of MgCr-LDH nanoparticles in a substrate-free path by using one-step formamide assisted hydrothermal reaction followed by visible light irradiation for significant photoelectrochemical (PEC) properties that manifest towards photocatalytic H2 and O2 production. The as-prepared nanostructured materials were characterized by various physico-chemical characterization techniques. Moreover, this unique synthetic approach produces 3D open porous network structure of MgCr-LDH nanoparticles, which were formed by stacking of numerous 2D nanosheets, for effective light harvestation, easy electronic channelization and unveil superlative PEC properties, including high current density (6.9 mA/cm2), small Tafel slope of 82 mV/decade, smallest arc of the Nyquist plot (59.1 Ω cm−2) and photostability of 6000 s for boosting water splitting activity. In addition, such perfectly self-stacked 2D nanosheets in 3D MgCr-LDH possess more surface active defect sites as enriched 50% oxygen vacancy resulting a good contact surface within the structure for effective light absorption along with easy electron and hole separation, which facilitates the adsorption of protons and intermediate for water oxidation. Additionally, the Cr3+ as dopant pull up the electrons from water oxidation intermediates, thereby displaying superior photocatalytic H2 and O2 production activity of 1315 μmol/h and 579 μmol/h, respectively. Therefore, the open 3D morphological aspects of MgCr-LDH nanoparticles with porous network structure and high surface area possess more surface defect sites for electron channelization and identified as distinct novel features of this kind of materials for triggering significant PEC properties, along with robustly enhance the photocatalytic water splitting performances.
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Affiliation(s)
- Susanginee Nayak
- Centre for Nano Science and Nano Technology, Institute of Technical Education and Research (ITER), Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751030, India.
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology, Institute of Technical Education and Research (ITER), Siksha 'O' Anusandhan Deemed to Be University, Bhubaneswar, Odisha, 751030, India.
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Das KK, Mansingh S, Sahoo DP, Mohanty R, Parida K. Engineering an oxygen-vacancy-mediated step-scheme charge carrier dynamic coupling WO 3−X/ZnFe 2O 4 heterojunction for robust photo-Fenton-driven levofloxacin detoxification. NEW J CHEM 2022. [DOI: 10.1039/d2nj00067a] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Schematic representation of the photo-Fenton degradation of levofloxacin under solar-light illumination.
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Affiliation(s)
- Kundan Kumar Das
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - Sriram Mansingh
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - Dipti Prava Sahoo
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - Ritik Mohanty
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University), Bhubaneswar-751030, Odisha, India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, SOA (Deemed to be University), Bhubaneswar-751030, Odisha, India
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Sahoo SS, Mansingh S, Babu P, Parida K. Black titania an emerging photocatalyst: review highlighting the synthesis techniques and photocatalytic activity for hydrogen generation. NANOSCALE ADVANCES 2021; 3:5487-5524. [PMID: 36133264 PMCID: PMC9419872 DOI: 10.1039/d1na00477h] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/12/2021] [Indexed: 05/19/2023]
Abstract
The TiO2 semiconductor photocatalyst is in the limelight of sustainable energy research in recent years because of its beneficial properties. However, its wide band-gap and rapid exciton recombination rate makes it a lame horse, and reduces its photocatalytic efficiency. Recently, researchers have developed facile methods for lowering the band-gap, so that it captures a wide range of solar spectrum, but the efficiency is still way behind the target value. After the discovery of black titania (B-TiO2), the associated drawbacks of white TiO2 and its modified forms were addressed to a large extent because it not only absorbs photons in a broad spectral range (UV to IR region), but also modifies the structural and morphological features, along with the electronic properties of the material, significantly boosting the catalytic performance. Hence, B-TiO2 effectively converts solar energy into renewable chemical energy i.e. green fuel H2 that can ultimately satisfy the energy crisis and environmental pollution. However, the synthesis techniques involved are quite tedious and challenging. Hence, this review summarizes various preparation methods of B-TiO2 and the involved characterization techniques. It also discusses the different modification strategies adopted to improve the H2 evolution activity, and hopes that this review acts as a guiding tool for researchers working in this field.
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Affiliation(s)
- Suman Sekhar Sahoo
- Centre for Nanoscience and Nanotechnology, Siksha O Anusandhan (Deemed to be University) Bhubaneswar-751030 Odisha India
| | - Sriram Mansingh
- Centre for Nanoscience and Nanotechnology, Siksha O Anusandhan (Deemed to be University) Bhubaneswar-751030 Odisha India
| | - Pradeepta Babu
- Centre for Nanoscience and Nanotechnology, Siksha O Anusandhan (Deemed to be University) Bhubaneswar-751030 Odisha India
| | - Kulamani Parida
- Centre for Nanoscience and Nanotechnology, Siksha O Anusandhan (Deemed to be University) Bhubaneswar-751030 Odisha India
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Extracts of Pelargonium hortorum: A natural and efficient fluid for fast and eco-friendly biosynthesis of CeO2 nanoparticles for antioxidant and photocatalytic applications. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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13
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Catalytic performance of Ni/CeO2 catalysts prepared from different routes for CO2 methanation. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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