1
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Chaudhari S, Patil V, Jadhav V, Walekar L, Kadam AN, Patil V, Ali R, Tamboli MS, Kim HK, Mhamane DS, Mali MG. Linker Encouraged Solid State Synthesis of MOF Derived Z-Scheme NiCo 2O 4/NiO/C toward Efficient Removal of Organic and Inorganic Pollutants from Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39239682 DOI: 10.1021/acs.langmuir.4c02616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
Here, we represent a solid-state route for the construction of MOF derived multifunctional Z-scheme NiCo2O4/NiO/C applied for the photocatalytic removal of methylene blue (dye) and tetracycline (drug) and the reduction of Cr(VI) (heavy metal). The developed solid-state method yielded a highly effective NiCo2O4/NiO/C catalyst by mechanically grinding independently produced Ni and Co-MOFs and subsequently pyrolyzing them. The use of different linkers in the Ni MOF (H3-BTC linker) and Co-MOF (2-methylimidazole linker) proved to be effective in constructing the NiCo2O4/NiO/C composite, ensuring a nonaggregated distribution on a carbon framework. Such a synthesized Z-scheme NiCo2O4/NiO/C composite has performed exceptionally well to achieve excellent degradation of MB (98.23% in 120 min) and TC (92.85% in 25 min) and Cr(VI) reduction (98.22% in 20 min), with excellent recyclability and stability. The NiCo2O4/NiO/C composite, synthesized using Ni and Co-MOFs prepared with different linkers, outperformed its counterpart prepared using Ni and Co-MOFs with identical linkers (either 2-methylimidazole or H3BTC). This study paves the way for the future synthesis of MOF derived bimetallic composites for photocatalytic applications.
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Affiliation(s)
- Sagar Chaudhari
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur 413255, India
| | - Vinod Patil
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur 413255, India
| | - Vishal Jadhav
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur 413255, India
| | - Laxman Walekar
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur 413255, India
| | - Abhijit Nanaso Kadam
- Department of Chemistry, John Wilson Education Society's, Wilson College (Autonomous), Mumbai, Maharashtra 400007, India
| | - Vaishali Patil
- Engineering and Applied Science Department, Vishwakarma Institute of Information Technology, Pune, Maharashtra 411 048, India
| | - Raisuddin Ali
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohaseen S Tamboli
- Korea Institute of Energy Technology (KENTECH), 21 KENTECH-gil, Naju, Jeollanam-do 58330, Republic of Korea
| | - Hyun-Kyung Kim
- Department of Battery Convergence Engineering, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon 24341, Republic of Korea
| | - Dattakumar S Mhamane
- Department of Chemistry, Sangameshwar College (Autonomous), Solapur 413001, India
| | - Mukund G Mali
- School of Chemical Sciences, Punyashlok Ahilyadevi Holkar Solapur University, Solapur 413255, India
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2
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Guo Q, Yan C, Huang Z, Liu Y, Cheng D, Lu C, Ran J, Yang Y. g-C 3N 4 nanosheet supported NiCo 2O 4 nanoparticles for boosting degradation of tetracycline under visible light and ultrasonic irradiation. NANOSCALE 2024; 16:12957-12966. [PMID: 38898817 DOI: 10.1039/d4nr01611d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The doping of semiconductor materials through some facile and appropriate methods holds significant promise in enhancing the catalytic performance of catalysts. Herein, NiCo2O4/g-C3N4 composite catalysts were synthesized via a high-energy ball milling method. The microstructure and physicochemical characterization of the as-prepared composites confirmed the successful loading of NiCo2O4 nanoparticles onto the g-C3N4 nanosheets. The NiCo2O4/g-C3N4 composites showed excellent catalytic effect under visible light/ultrasonic irradiation, and the efficiency of tetracycline hydrochloride (TCH) degradation reached 90% within 15 min. The optical properties of g-C3N4 nanosheets were improved by doping, and the diffusion of active materials and carrier migration rate were improved by ultrasonic assistance. Possible catalytic mechanisms and potential pathways of the NiCo2O4/g-C3N4 composites for the degradation of TCH triggered by visible light/ultrasonic irradiation were proposed. This study provides a new strategy for energy-assisted photocatalytic degradation of organic pollutants.
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Affiliation(s)
- Qingfeng Guo
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
- Engineering Research Center for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430200, China
| | - Changwang Yan
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
| | - Zhenqian Huang
- Hubei Key Laboratory of Biomass Fiber and Ecological Dyeing and Finishing, Wuhan Textile University, Wuhan 430020, China.
| | - Yujie Liu
- Hubei Key Laboratory of Biomass Fiber and Ecological Dyeing and Finishing, Wuhan Textile University, Wuhan 430020, China.
| | - Deshan Cheng
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
| | - Chaoyang Lu
- Qianshui (Hubei) Environmental Technology Co., Ltd, Tianmen 431700, China
| | - Jianhua Ran
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
- Hubei Key Laboratory of Biomass Fiber and Ecological Dyeing and Finishing, Wuhan Textile University, Wuhan 430020, China.
| | - Yingkui Yang
- State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
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Das S, Ahn YH. Preparation of P-doped CdS nanorods as an efficient photocatalyst for the degradation of the emerging pollutant tetracycline antibiotic under blue LED light irradiation. Dalton Trans 2022; 51:13646-13656. [PMID: 36040135 DOI: 10.1039/d2dt02299k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Excessive drug usage and sewage discharges containing antibiotics have caused water contamination due to the rapid growth of pharmaceutical industries. Tetracycline (TC) is one of the most frequently applied antibiotics having a significant impact on the aquatic environment, water quality and human health and thus effective approaches for TC removal from water are urgently needed. Here, we have fabricated P-doped CdS (CdS-P0.8) nanorods (NRs) by one-step thermal phosphorization treatment for TC degradation through photocatalytic reaction in the presence of blue and white LED light irradiation. Synthesized photocatalysts were characterized to authenticate the incorporation of P atoms on the CdS NR surface using XPS, XRD, ICP-OES and EDX mapping analyses. CdS-P0.8 NRs have greater photocatalytic activity for tetracycline degradation under blue LED light irradiation. TC degradation on CdS-P0.8 NRs followed pseudo-first order kinetics for both LED light sources. In the presence of blue LED light at an intensity of 10 mW cm-2, TC degradation efficiency and pseudo-first order rate constants of CdS-P0.8 NRs for the photocatalytic degradation reaction reached 95.4% and 0.13396 min-1 in 20 minutes without any supplemental oxygen sources. Scavenging experiments demonstrate that reactive oxygen species are produced during the photocatalytic degradation of tetracycline. As a result, due to the extensive utilization of photogenerated oxidative species such as h+, O2˙- and OH˙, CdS-P0.8 NRs demonstrated high photocatalytic tetracycline degradation efficiency in 20 minutes. Our findings shed more light on nonmetal P doping on CdS materials and other semiconductors, exploring new possibilities for photocatalytic degradation to efficiently reduce the amount and toxicity of TC antibiotics in wastewater.
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Affiliation(s)
- Sankar Das
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
| | - Young-Ho Ahn
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
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Feng T, Li H, Gao R, Su G, Wang W, Dong B, Cao L. Manganese Cadmium Sulfide Nanoparticles Solid Solution on Cobalt Acid Nickel Nanoflakes: A Robust Photocatalyst for Hydrogen Evolution. CHEMSUSCHEM 2022; 15:e202200288. [PMID: 35266300 DOI: 10.1002/cssc.202200288] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/04/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic water splitting for hydrogen evolution is one of the most promising methods to mitigate environmental and energy-related issues. In this study, manganese cadmium sulfide (Mnx Cd1-x S) solid solution is used to construct a p-n heterostructure with NiCo2 O4 through a hydrothermal method. The Mn0.25 Cd0.75 S/NiCo2 O4 composites are used for photocatalytic hydrogen evolution reaction, and the optimal hydrogen rate with 40 mg of Mn0.25 Cd0.75 S/NiCo2 O4 40 mg (MCS/NCO 40) is 61159 μmol g-1 h-1 , which is about 16.3 times than that of pure Mn0.25 Cd0.75 S. After combining with NiCo2 O4 , the light absorption scale, the separation efficiency of photogenerated carriers, and the reaction kinetics are enhanced. Moreover, the band offset of MCS/NCO composites is calculated by the core level alignment method, demonstrating the formation of a p-n heterostructure. The built-in electric field from the p-n heterostructure drives charge transfer and enhances separation efficiency, which results in improved photocatalytic performance.
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Affiliation(s)
- Ting Feng
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
| | - Haiyan Li
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
| | - Rongjie Gao
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
| | - Ge Su
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
| | - Wei Wang
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
- Aramco Research Center, Boston, Aramco Services Company, 02139, Cambridge, MA, USA
| | - Bohua Dong
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
| | - Lixin Cao
- College of Materials Science and Engineering, Ocean University of China, Songling road No. 238, QingDao city, P. R. China
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Yadav K, Raut SS, Patro TU, Abhyankar AC, Kulkarni PS. Annealing Temperature- and Morphology-Controlled Development of Nickel Cobaltite Nanoneedles for Photocatalytic Degradation of Nitroaromatics. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c05046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaumudi Yadav
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Sandesh S. Raut
- Energy and Environment Laboratory, Department of Applied Chemistry, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - T. Umasankar Patro
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Ashutosh C. Abhyankar
- Department of Metallurgical & Materials Engineering, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
| | - Prashant S. Kulkarni
- Energy and Environment Laboratory, Department of Applied Chemistry, Ministry of Defence, Defence Institute of Advanced Technology (DU), Pune 411 025, India
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6
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Das S, Ahn YH. Synthesis and application of CdS nanorods for LED-based photocatalytic degradation of tetracycline antibiotic. CHEMOSPHERE 2022; 291:132870. [PMID: 34774615 DOI: 10.1016/j.chemosphere.2021.132870] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/08/2021] [Accepted: 11/08/2021] [Indexed: 06/13/2023]
Abstract
With the rapid development of pharmaceutical industrialization, increased consumption of drugs and discharged sewage contains antibiotics that lead to water contamination. For this purpose, removal of antibiotics from aquatic environment is emphasizing the need to produce clean water using easy separable catalysts through photocatalytic water remediation and thus the semiconductor photocatalysts have presently gained fascinating unprecedented research attention. Herein, we present the synthesis of semiconductor CdS nanorods by a facile hydrothermal procedure using ethylene diamine as a coordinating agent. Then, we subsequently studied the photocatalytic activity of CdS nanorods under blue and white LED light irradiation for the degradation of tetracycline antibiotic as a model compound. The light dependent photocatalytic activity of CdS nanorods demonstrated that CdS nanorods possess higher catalytic efficiency in presence of blue light compared to white light toward the photocatalytic degradation of tetracycline antibiotic. We have also studied the photocatalytic activity in presence of various light intensity. These CdS nanorods exhibited the highest tetracycline degradation efficacy of 95.6% within 60 min in presence of blue light (intensity: 200W/m2) without any supplementary oxygen sources during the degradation reaction. The photocatalytic mechanism of the tetracycline degradation has been elucidated by scavenging experiment. The experimental results indicate the formation of reactive oxygen species during photocatalytic degradation of tetracycline antibiotic. This work represents an alternative route to develop heterogeneous photocatalyst for antibiotics degradation due to the outstanding efficiency and stability of the CdS nanorods as well as easy separation through simple filtration method. It is anticipated that this work will shed light in the practical applications of CdS nanorods for environmental remediation through wastewater treatment.
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Affiliation(s)
- Sankar Das
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, South Korea
| | - Young-Ho Ahn
- Department of Civil Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
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7
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Liu N, Li X, Wang Y, Zhu B, Tian Y, Lang J, Yang J. Photocatalyst prepared by NiCo2O4/CNQDs modified carbon fabric heterojunctions enhanced visible-light-driven photocatalytic degradation of Methyl Orange. CrystEngComm 2022. [DOI: 10.1039/d2ce00183g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As this point, A novel photocatalyst was reported by us, cobalt nickel tetroxide (NiCo2O4)/g-C3N4 quantum dots (CNQDs) heterojunctions on carbon cloth (CC). NiCo2O4 nanosheets and NiCo2O4/CNQDs were grown on carbon...
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Yadav K, Bagal R, Parmar S, Patro TU, Abhyankar AC. In Situ Coating of Needle-like NiCo 2O 4 Magnetic Nanoparticles on Lightweight Reticulated Vitreous Carbon Foam toward Achieving Improved Electromagnetic Wave Absorption. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaumudi Yadav
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune 411025, India
| | - Rohit Bagal
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune 411025, India
| | - Saurabh Parmar
- Department of Applied Physics, Defence Institute of Advanced Technology (DU), Girinagar, Pune 411025, India
| | - T. Umasankar Patro
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune 411025, India
| | - Ashutosh C. Abhyankar
- Department of Metallurgical and Materials Engineering, Defence Institute of Advanced Technology (DU), Girinagar, Pune 411025, India
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9
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Zhu M, Liu Y, Chen M, Xu Z, Li L, Liu R, He W, Zhou Y, Bai Y. Toward Efficient Oil Energy Recovery: Eco-Friendly Fabrication of a Biomimetic Durable Metal Mesh with a Moss-Like Silver Nanocluster Structure. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8776-8788. [PMID: 34266237 DOI: 10.1021/acs.langmuir.1c01125] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
With the purpose of oil energy recovery as well as achieving efficiency of oil/water separation, hydrophobic mesh materials have attracted extensive attention. However, fabrication of the current methods is not environmentally friendly, has high energy consumption, and creates serious pollution. Inspired by lotus leaves and rose petals, a biomimetic superhydrophobic surface was fabricated prepared on a stainless steel mesh by an in situ chemical reduction method with simple operation and mild conditions. The results of SEM, XRD, and XPS demonstrated that the mesh shows a stable and uniform moss-like rough structured surface. The SSM/Ag/ODA mesh, which was modified by moss-like Ag nanoclusters and low surface energy agents, has excellent superhydrophobicity with an excellent oil/water separation efficiency that reached up to 99.8%. The silver mirror phenomenon formed by the Ag nanoclusters further confirmed that silver ions were reduced and attached to the surface of the mesh. Moreover, the mesh can maintain superhydrophobicity under harsh conditions, such as a high concentration of a salty solution, organic solvents, alkaline, acidic solution, and even long-time UV irradiation, etc. More importantly, the modified mesh has excellent physical stability, in which the water contact angle on the mesh can be maintained above 150° after harsh mechanical wear. The hydrophobic mesh showed great potential to be applied for highly efficient oil/water separation and oil energy recovery even under complex and harsh conditions.
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Affiliation(s)
- Meng Zhu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Yucheng Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
- Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Mingyan Chen
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
- Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Zhiheng Xu
- AMPrint Center, Rochester Institute of Technology, New York, New York 14623, United States
| | - Lingli Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
- Research Institute of Industrial Hazardous Waste Disposal and Resource Utilization, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Rui Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Wei He
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
| | - Ying Zhou
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Yang Bai
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
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10
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Chang TC, Lu YT, Lee CH, Gupta JK, Hardwick LJ, Hu CC, Chen HYT. The Effect of Degrees of Inversion on the Electronic Structure of Spinel NiCo 2O 4: A Density Functional Theory Study. ACS OMEGA 2021; 6:9692-9699. [PMID: 33869949 PMCID: PMC8047663 DOI: 10.1021/acsomega.1c00295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
In this study, electronic structure calculations and Bader charge analysis have been completed on the inverse, intermediate, and normal spinel structures of NiCo2O4 in both primitive and conventional cells, using density functional theory with Hubbard U correction. Three spinel structures have been computed in the primitive cell, where the fully inverse spinel, 50% intermediate spinel, and normal spinel can be acquired by swapping Ni and Co atoms on tetrahedral and octahedral sites. Furthermore, NiCo2O4 with different degrees of inversion in the conventional cells was also investigated, along with their doping energies. Confirmed by the assigned formal charges, magnetic moments, and decomposed density of state, our results suggest that the electronic properties of Ni and Co on the tetrahedral site can be altered by swapping Ni and Co atoms, whereas both Ni and Co on the octahedral site are uninfluenced. A simple and widely used model, crystal field theory, is also compared with our calculations and shows a consistent prediction about the cation distribution in NiCo2O4. This study analyzes the correlation between cation arrangements and formal charges, which could potentially be used to predict the desired electronic properties of NiCo2O4 for various applications.
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Affiliation(s)
- Tzu-Chien Chang
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 300044, Taiwan
| | - Yi-Ting Lu
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 300044, Taiwan
- Stephenson
Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Liverpool L69 7ZF, U.K.
| | - Chih-Heng Lee
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 300044, Taiwan
| | - Jyoti K. Gupta
- Stephenson
Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Liverpool L69 7ZF, U.K.
| | - Laurence J. Hardwick
- Stephenson
Institute for Renewable Energy, Department of Chemistry, University of Liverpool, Liverpool L69 7ZF, U.K.
| | - Chi-Chang Hu
- Department
of Chemical Engineering, National Tsing
Hua University, Hsinchu 300044, Taiwan
| | - Hsin-Yi Tiffany Chen
- Department
of Engineering and System Science, National
Tsing Hua University, Hsinchu 300044, Taiwan
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Emerging Hybrid Nanocomposite Photocatalysts for the Degradation of Antibiotics: Insights into Their Designs and Mechanisms. NANOMATERIALS 2021; 11:nano11030572. [PMID: 33668837 PMCID: PMC7996256 DOI: 10.3390/nano11030572] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/10/2021] [Accepted: 02/22/2021] [Indexed: 01/13/2023]
Abstract
The raising occurrence of antibiotics in the global water bodies has received the emerging concern due to their potential threats of generating the antibiotic-resistive and genotoxic effects into humans and aquatic species. In this direction, the solar energy assisted photocatalytic technique offers a promising solution to address such emerging concern and paves ways for the complete degradation of antibiotics with the generation of less or non-toxic by-products. Particularly, the designing of hybrid photocatalyticcomposite materials has been found to show higher antibiotics degradation efficiencies. As the hybrid photocatalysts are found as the systems with ideal characteristic properties such as superior structural, surface and interfacial properties, they offer enhanced photoabsorbance, charge-separation, -transfer, redox properties, photostability and easy recovery. In this context, this review study presents an overview on the recent developments in the designing of various hybrid photocatalytic systems and their efficiency towards the degradation of various emerging antibiotic pharmaceutical contaminants in water environments.
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Manchala S, Gandamalla A, Vempuluru NR, Muthukonda Venkatakrishnan S, Shanker V. High potential and robust ternary LaFeO 3/CdS/carbon quantum dots nanocomposite for photocatalytic H 2 evolution under sunlight illumination. J Colloid Interface Sci 2020; 583:255-266. [PMID: 33002697 DOI: 10.1016/j.jcis.2020.08.125] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 08/15/2020] [Accepted: 08/31/2020] [Indexed: 11/26/2022]
Abstract
Exploitation of the novel, robust, and advanced photocatalytic systems with high efficiency is the present demand for clean, green, and sustainable energy production. Carbon quantum dots (CQDs) have attracted tremendous interest in efficient H2 evolution from photocatalysis due to its remarkable visible-light harvesting and electron transport properties. Here, for the first time, a smart ternary nanocomposite comprises encapsulated CQDs with LaFeO3 spherical nanoparticles and CdS nanorods is synthesized by a simple hydrothermal procedure for the efficient photocatalytic H2 evolution under sunlight illumination. PXRD, FT-IR, FE-SEM, TEM, and XPS studies are performed to ensure the successful fabrication of ternary LaFeO3/CdS/CQD nanocomposite. The efficient H2 evolution rate (HER) of 25,302 μmol h-1 gcat-1 is achieved for LaFeO3/CdS/CQD nanocomposite, which is 602.4, 2.6, 29.8, 2.0 and 1.1 times higher than that of pristine LaFeO3, pristine CdS, and composites such as LaFeO3/CdS, LaFeO3/CQD, and CdS/CQD. Photocurrent and lifetime PL studies reveal, encapsulation of CQDs with the LaFeO3/CdS heterojunction can facilitate easy and efficient separation of photo-generated excitons. Altogether the fabrication of CQDs provides an ideal avenue for the development of high potential advanced photocatalytic systems for sustainable H2 production with remarkable efficiencies.
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Affiliation(s)
- Saikumar Manchala
- Department of Chemistry, National Institute of Technology, Warangal 506004, Telangana, India; Centre for Advanced Materials, National Institute of Technology, Warangal 506004, Telangana, India; Department of Chemistry, Indian Insititute of Technology, Hauz Khas, New Delhi 110016, India
| | - Ambedkar Gandamalla
- Department of Chemistry, National Institute of Technology, Warangal 506004, Telangana, India; Centre for Advanced Materials, National Institute of Technology, Warangal 506004, Telangana, India
| | - Navakoteswara Rao Vempuluru
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science and Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516005, Andhra Pradesh, India
| | - Shankar Muthukonda Venkatakrishnan
- Nano Catalysis and Solar Fuels Research Laboratory, Department of Materials Science and Nanotechnology, Yogi Vemana University, Vemanapuram, Kadapa 516005, Andhra Pradesh, India
| | - Vishnu Shanker
- Department of Chemistry, National Institute of Technology, Warangal 506004, Telangana, India; Centre for Advanced Materials, National Institute of Technology, Warangal 506004, Telangana, India.
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