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Khaladkar SR, Maurya O, Gund G, Sinha B, Dubal D, Deshmukh R, Kalekar A. Extrinsic Pseudocapacitive NiSe/rGO/g-C 3N 4 Nanocomposite for High-Performance Hybrid Supercapacitors. ACS APPLIED MATERIALS & INTERFACES 2024; 16:11408-11420. [PMID: 38410916 DOI: 10.1021/acsami.3c16010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Battery-type materials with ultrahigh energy density show great potential for hybrid supercapacitors (HSCs). In this work, we have developed a nickel selenide (NiSe)/reduced graphene oxide (rGO)/graphitic carbon nitride (g-C3N4) ternary composite as a promising positive electrode for hybrid supercapacitors (HSCs). The extended π-conjugated planar layers of g-C3N4 promote strong interconnectivity with rGO, which further enhances surface area, surface free energy, and efficient electron/ionic path. Additionally, it establishes clear ion diffusion pathways, serving as ion reservoirs during charge and discharge and facilitating efficient redox reactions. As a result, the NiSe/g-C3N4/rGO nanocomposite electrode displayed a specific capacity of 412.6 mA h g-1 at 1 A g-1. Later, the HSC device was assembled using the nanocomposite as the positive electrode and activated carbon as the negative electrode, which delivered an energy density of 65.2 Wh kg-1 at a power density of 750 W kg-1. Notably, the HSC device maintained excellent cyclic stability, preserving 93.3% of its initial performance and Coulombic efficiency of 86.6% for 10,000 charge-discharge cycles at 5 A g-1. These findings underscore the potential utility of NiSe/g-C3N4/rGO as a versatile and effective electrode material for the strategic development of HSC devices.
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Affiliation(s)
- Somnath R Khaladkar
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra 400019, India
| | - Oshnik Maurya
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra 400019, India
| | - Girish Gund
- Department of Physics, Mahatma Phule Arts, Science and Commerce College, Panvel, Mumbai, Maharashtra 410206, India
| | - Bhavesh Sinha
- National Center for Nanoscience and Nanotechnology, University of Mumbai, Mumbai, Maharashtra 400032, India
| | - Deepak Dubal
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Rajendra Deshmukh
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra 400019, India
| | - Archana Kalekar
- Department of Physics, Institute of Chemical Technology (ICT), Matunga, Mumbai, Maharashtra 400019, India
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2
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Shajahan S, Mohammad AH. Development of Co 3O 4/TiO 2/rGO photocatalyst for efficient degradation of pharmaceutical pollutants with effective charge carrier recombination suppression. ENVIRONMENTAL RESEARCH 2023; 235:116535. [PMID: 37399985 DOI: 10.1016/j.envres.2023.116535] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/21/2023] [Accepted: 06/30/2023] [Indexed: 07/05/2023]
Abstract
Pharmaceutical contaminations in the water resources becomes very serious global environmental issue. Therefore, these pharmaceutical molecules should be removed from the water resources. In the current work, 3D/3D/2D-Co3O4/TiO2/rGO nanostructures were synthesized through a facile self-assembly-assisted solvothermal method for an effective removal of pharmaceutical contaminations. The nanocomposite was finely optimized through the response surface methodology (RSM) technique with different initial reaction parameters and different molar ratios. Various characterization techniques were used to understand the physical and chemical properties of 3D/3D/2D heterojunction and its photocatalytic performance. The degradation performance of ternary nanostructure was rapidly increased owing formation of 3D/3D/2D heterojunction nanochannels. The 2D-rGO nanosheets play an essential role in trapping photoexcited charge carriers to reduce the recombination process rapidly as confirmed by photoluminescence analysis. Tetracycline and ibuprofen were used as model carcinogen molecules to examine the degradation efficiency of Co3O4/TiO2/rGO under visible light irradiation using halogen lamp. The intermediates produced during the degradation process were studied using LC-TOF/MS analysis. The pharmaceutical molecules tetracycline and ibuprofen follows pseudo first order kinetics model. The photodegradation results show that the 6:4 M ratio of Co3O4:TiO2 with 5% rGO exhibits 12.4 times and 12.3 higher degradation ability than pristine Co3O4 nanostructures against tetracycline and ibuprofen, respectively. These results shows high efficiency of Co3O4/TiO2/rGO composite against the degradation of tetracycline and ibuprofen.
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Affiliation(s)
- Shanavas Shajahan
- Department of Chemistry, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Abu Haija Mohammad
- Department of Chemistry, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Advanced Materials Chemistry Center (AMCC), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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3
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Bharagav U, Ramesh Reddy N, Nava Koteswara Rao V, Ravi P, Sathish M, Rangappa D, Prathap K, Shilpa Chakra C, Shankar MV, Appels L, Aminabhavi TM, Kakarla RR, Mamatha Kumari M. Bifunctional g-C 3N 4/carbon nanotubes/WO 3 ternary nanohybrids for photocatalytic energy and environmental applications. CHEMOSPHERE 2023; 311:137030. [PMID: 36334741 DOI: 10.1016/j.chemosphere.2022.137030] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 09/08/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Ternary nanohybrids based on mesoporous graphitic carbon nitride (g-C3N4) were synthesized and presented for developing stable and efficient Hydrogen (H2) production system. Based on photocatalytic activity, optimization was performed in three different stages to develop carbon nanotubes (CNTs) and WO3 loaded g-C3N4 (CWG-3). Initially, the effect of exfoliation was investigated, and a maximum specific surface area of 100.77 m2/g was achieved. 2D-2D interface between WO3 and g-C3N4 was targeted and achieved, to construct a highly efficient direct Z-scheme heterojunction. Optimized binary composite holds the enhanced activity of about 2.6 folds of H2 generation rates than the thermally exfoliated g-C3N4. Further, CNT loading towards binary composite in an optimized weight ratio enhances the activity by 6.86 folds than the pristine g-C3N4. Notably, optimized ternary nanohybrid generates 15,918 μmol h-1. g-1cat of molecular H2, under natural solar light irradiation with 5 vol% TEOA as a sacrificial agent. Constructive enhancements deliver remarkable H2 production and dye degradation activities. Results evident that, the same system can be useful for pilot-scale energy generation and other photocatalytic applications as well.
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Affiliation(s)
- U Bharagav
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516 005, Andhra Pradesh, India
| | - N Ramesh Reddy
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516 005, Andhra Pradesh, India
| | - V Nava Koteswara Rao
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516 005, Andhra Pradesh, India
| | - P Ravi
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute- Karaikudi, Tamil Nadu, India
| | - M Sathish
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute- Karaikudi, Tamil Nadu, India
| | - Dinesh Rangappa
- Visvesvaraya Center for Nano Science and Technology, Visvesvaraya Technological University, Muddenahalli, Chikkaballapura, Karnataka, India
| | - K Prathap
- Centre for Advanced Studies in Electronics Science and Technology (CASEST), School of Physics, University of Hyderabad, Gachibowli, Hyderabad, India
| | - Ch Shilpa Chakra
- Jawaharlal Nehru Technological University Hyderabad (JNTUH), Kukatpally, Hyderabad, Telangana, India
| | - M V Shankar
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516 005, Andhra Pradesh, India
| | - Lise Appels
- KU Leuven, Department of Chemical Engineering, Process and Environmental Technology Lab, Jan Pieter De Nayerlaan 5, B-2860, Sint-Katelijne-Waver, Belgium
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, 580031, Karnataka, India; School of Engineering, University of Petroleum and Energy Studies, Dehradun, India.
| | - Raghava Reddy Kakarla
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia.
| | - M Mamatha Kumari
- Nanocatalysis and Solar Fuels Research Laboratory, Department of Materials Science & Nanotechnology, Yogi Vemana University, Kadapa, 516 005, Andhra Pradesh, India.
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Azami MS, Jalil AA, Hassan NS, Hussain I, Fauzi AA, Aziz MAA. Green carbonaceous material‒fibrous silica-titania composite photocatalysts for enhanced degradation of toxic 2-chlorophenol. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125524. [PMID: 33647620 DOI: 10.1016/j.jhazmat.2021.125524] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/12/2021] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
In this work, fibrous silica-titania (FST) was successfully prepared by the microemulsion method prior to the addition of three types of carbonaceous materials: graphitic-carbon nitride, g-C3N4 (CN), graphene nanoplatelets (GN), and multi-wall carbon nanotubes, MWCNT (CNT), via a solid-state microwave irradiation technique. The catalysts were characterized using XRD, FESEM, TEM, FTIR, UV-Vis DRS, N2 adsorption-desorption, XPS and ESR, while their photoactivity was examined on the degradation of toxic 2-chlorophenol (2-CP). The result demonstrated that the initial reaction rate was in the following order: CNFST (5.1 × 10-3 mM min-1) > GNFST (2.5 × 10-3 mM min-1) > CNTFST (2.3 × 10-3 mM min-1). The best performance was due to the polymeric structure of g-C3N4 with a good dispersion of C and N on the surface FST. This dispersion contributed towards an appropriate quantity of defect sites, as a consequence of the greater interaction between g-C3N4 and the FST support, that led to narrowed of band gap energy (2.98 eV to 2.10 eV). The effect of scavenger and ESR studies confirmed that the photodegradation over CNFST occurred via a Z-scheme mechanism. It is noteworthy that the addition of green carbonaceous materials on the FST markedly enhanced the photodegradation of toxic 2-CP.
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Affiliation(s)
- M S Azami
- Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor Bahru, Johor, Malaysia.
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - I Hussain
- Faculty of Science, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - A A Fauzi
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
| | - M A A Aziz
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, 81310 UTM Johor Bahru, Johor, Malaysia
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5
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Jain A, Kumar A, Kaur H, Krishnan V. Strategic combination of ultra violet-visible-near infrared light active materials towards maximum utilization of full solar spectrum for photocatalytic chromium reduction. CHEMOSPHERE 2021; 267:128884. [PMID: 33190910 DOI: 10.1016/j.chemosphere.2020.128884] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 10/27/2020] [Accepted: 11/03/2020] [Indexed: 06/11/2023]
Abstract
Maximum utilization of the full solar spectrum has been considered as a holy grail in the field of photocatalysis and has emerged important in the recent years, as the world needs to move towards renewable energy sources and also to maintain environmental health. In the search for a sustainable solution, we have come up with a strategic combination of materials, which can be active under all the three regions, namely ultraviolet (UV), visible and near infrared (NIR) of the sunlight. Specifically, we have developed a series of nanocomposites comprising of two dimensional nanosheets of zinc oxide (ZnO) and graphitic carbon nitride (GCN), and successfully coupled them with upconversion nanoparticles (UCNP). These nanocomposites have been successfully utilized for the photocatalytic chromium (Cr(VI)) reduction. The prepared nanocomposites exhibit an excellent photocatalytic activity toward reduction of Cr(VI) under different light region. A plausible mechanism for the photocatalytic process has been proposed based on the detailed study. This work is expected to pave way for the strategic design and development of many photocatalytic systems, which can utilize sunlight to the maximum extent.
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Affiliation(s)
- Abhishek Jain
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Ajay Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Harpreet Kaur
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, 175075, Himachal Pradesh, India.
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6
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Liu Q, Zhou L, Gao J, Wang S, Liu L, Liu S. Surface chemistry-dependent activity and comparative investigation on the enhanced photocatalytic performance of graphitic carbon nitride modified with various nanocarbons. J Colloid Interface Sci 2020; 569:12-21. [PMID: 32097798 DOI: 10.1016/j.jcis.2020.02.075] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 11/19/2022]
Abstract
Organic contaminants, dyes and antibiotics, discharged in wastewater systems, have posed great threats to the sustainability of the ecosystem. This study was performed to prepare graphitic carbon nitride (GCN) nanocomposites modified by nanocarbons, including carbon quantum dots (CQD), carbon nanotube (CNT), reduced graphene oxide (rGO), and carbon nanospheres (CNS), by a straightforward one-pot method. The characterization results suggest that after the modification with nanocarbons, GCN demonstrated slight red shift and stronger light absorption. The resultant photocatalysts revealed prominent performances for total photodegradation of organic contaminants. The degradation processes were investigated by in situ electron paramagnetic resonance (EPR). The mechanistic studies on the enhanced photoelectrochemical and photocatalytic performances were also conducted. Results indicate that GCN modified by the nanocarbon spheres displayed a substantial improvement in the degradation of sulfachloropyridazine (SCP) and dyes, compared favourably with other GCN samples modified by carbon nanotubes, quantum dots and layered graphene oxide. The photocatalytic degradation difference is mainly stemmed from the higher contents of COOH and CO functional groups. The intimate contact or interaction between the two phases of GCN and nanocarbon in the nanocomposites may further improve the activity. This work provides insight in the design of highly efficient metal-free photocatalysts to better utilise the clean and free solar energy for environmental remediation.
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Affiliation(s)
- Qiaoran Liu
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, WA 6102, Australia
| | - Li Zhou
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, WA 6102, Australia
| | - Jun Gao
- School of Chemical and Biological Engineering, Shandong University of Science and Technology, PR China
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide SA 5005, Australia.
| | - Lihong Liu
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, WA 6102, Australia
| | - Shaomin Liu
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, WA 6102, Australia; Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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7
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Liu Q, Tian H, Dai Z, Sun H, Liu J, Ao Z, Wang S, Han C, Liu S. Nitrogen-doped Carbon Nanospheres-Modified Graphitic Carbon Nitride with Outstanding Photocatalytic Activity. NANO-MICRO LETTERS 2020; 12:24. [PMID: 34138065 PMCID: PMC7770884 DOI: 10.1007/s40820-019-0358-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 12/08/2019] [Indexed: 06/12/2023]
Abstract
Metals and metal oxides are widely used as photo/electro-catalysts for environmental remediation. However, there are many issues related to these metal-based catalysts for practical applications, such as high cost and detrimental environmental impact due to metal leaching. Carbon-based catalysts have the potential to overcome these limitations. In this study, monodisperse nitrogen-doped carbon nanospheres (NCs) were synthesized and loaded onto graphitic carbon nitride (g-C3N4, GCN) via a facile hydrothermal method for photocatalytic removal of sulfachloropyridazine (SCP). The prepared metal-free GCN-NC exhibited remarkably enhanced efficiency in SCP degradation. The nitrogen content in NC critically influences the physicochemical properties and performances of the resultant hybrids. The optimum nitrogen doping concentration was identified at 6.0 wt%. The SCP removal rates can be improved by a factor of 4.7 and 3.2, under UV and visible lights, by the GCN-NC composite due to the enhanced charge mobility and visible light harvesting. The mechanism of the improved photocatalytic performance and band structure alternation were further investigated by density functional theory (DFT) calculations. The DFT results confirm the high capability of the GCN-NC hybrids to activate the electron-hole pairs by reducing the band gap energy and efficiently separating electron/hole pairs. Superoxide and hydroxyl radicals are subsequently produced, leading to the efficient SCP removal.
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Affiliation(s)
- Qiaoran Liu
- Department of Chemical Engineering, Curtin University, Perth, WA, 6845, Australia
| | - Hao Tian
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, People's Republic of China
| | - Zhenghua Dai
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Hongqi Sun
- School of Engineering, Edith Cowan University, Joondalup, WA, 6027, Australia
| | - Jian Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, People's Republic of China
| | - Zhimin Ao
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
| | - Shaobin Wang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA, 5005, Australia.
| | - Chen Han
- Department of Chemical Engineering, Curtin University, Perth, WA, 6845, Australia
| | - Shaomin Liu
- Department of Chemical Engineering, Curtin University, Perth, WA, 6845, Australia.
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8
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Choi DS, Lee H, Tieves F, Lee YW, Son EJ, Zhang W, Shin B, Hollmann F, Park CB. Bias-Free In Situ H2O2 Generation in a Photovoltaic-Photoelectrochemical Tandem Cell for Biocatalytic Oxyfunctionalization. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04454] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Da Som Choi
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Hojin Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Florian Tieves
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Yang Woo Lee
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Eun Jin Son
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Wuyuan Zhang
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Byungha Shin
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
| | - Frank Hollmann
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Chan Beum Park
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 335 Science Road, Daejeon 34141, Republic of Korea
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9
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Lima MJ, Pastrana-Martínez LM, Sampaio MJ, Dražić G, Silva AMT, Faria JL, Silva CG. Selective Production of Benzaldehyde Using Metal-Free Reduced Graphene Oxide/Carbon Nitride Hybrid Photocatalysts. ChemistrySelect 2018. [DOI: 10.1002/slct.201800962] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Maria J. Lima
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM); Faculdade de Engenharia; Universidade do Porto, Rua Dr. Roberto Frias s/n; 4200-465 Porto Portugal
| | - Luisa M. Pastrana-Martínez
- Carbon Materials Research Group; Department of Inorganic Chemistry; Faculty of Sciences; University of Granada, Campus Fuentenueva s/n; 18071 Granada Spain
| | - Maria J. Sampaio
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM); Faculdade de Engenharia; Universidade do Porto, Rua Dr. Roberto Frias s/n; 4200-465 Porto Portugal
| | - Goran Dražić
- Department of Materials Chemistry; National Institute of Chemistry, Hajdrihova 19, Ljubljana; Slovenia
| | - Adrián M. T. Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM); Faculdade de Engenharia; Universidade do Porto, Rua Dr. Roberto Frias s/n; 4200-465 Porto Portugal
| | - Joaquim L. Faria
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM); Faculdade de Engenharia; Universidade do Porto, Rua Dr. Roberto Frias s/n; 4200-465 Porto Portugal
| | - Cláudia G. Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM); Faculdade de Engenharia; Universidade do Porto, Rua Dr. Roberto Frias s/n; 4200-465 Porto Portugal
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10
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Guo Y, Wang R, Wang P, Li Y, Wang C. Developing polyetherimide/graphitic carbon nitride floating photocatalyst with good photodegradation performance of methyl orange under light irradiation. CHEMOSPHERE 2017; 179:84-91. [PMID: 28364650 DOI: 10.1016/j.chemosphere.2017.03.085] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 01/26/2017] [Accepted: 03/21/2017] [Indexed: 06/07/2023]
Abstract
Polyetherimide-graphitic carbon nitride (PEI-g-C3N4) floating photocatalyst has been synthesized by using polyetherimide (PEI) as linker to bind graphitic carbon nitride (g-C3N4) together. XRD and XPS analysis for PEI-g-C3N4 show that the interaction between PEI and g-C3N4 does not disturb the structure of g-C3N4. FTIR, TEM and theoretical results suggest that the long chain PEI binds g-C3N4 particles together to form PEI-g-C3N4 via hydrogen bonding interaction. Based on photodegradation results of methyl orange (MO), PEI can not photodegrade MO and just works as linker in PEI-g-C3N4, while the photodegradation performance of PEI-g-C3N4 is from the contribution of g-C3N4. Total organic carbon (TOC) analysis show that nearly 47% organic carbon has been converted into inorganic carbon after photodegradation, suggesting that PEI-g-C3N4 can destroy both NN bond and aromatic rings in MO under light irradiation. The photodegradation efficiency (91%) of MO by g-C3N4 is higher than that (80%) by PEI-g-C3N4 with stirring. But, the photodegradation efficiency (37%) of MO by g-C3N4 is lower than that (55%) by PEI-g-C3N4 without stirring. This is the advantage of floating photocatalyst with respect to the powder photocatalyst since the former can utilize more solar energy than the latter when stirring is not available.
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Affiliation(s)
- Yong Guo
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education, College of Environment, Hohai University, PR China.
| | - Ruxia Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education, College of Environment, Hohai University, PR China
| | - Peifang Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education, College of Environment, Hohai University, PR China.
| | - Yi Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education, College of Environment, Hohai University, PR China
| | - Chao Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of Education, College of Environment, Hohai University, PR China
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11
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Hussin F, Lintang HO, Lee SL, Yuliati L. Photocatalytic synthesis of reduced graphene oxide-zinc oxide: Effects of light intensity and exposure time. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.03.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Nanocarbons with Different Dimensions as Noble-Metal-Free Co-Catalysts for Photocatalysts. Catalysts 2016. [DOI: 10.3390/catal6080111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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13
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Ong WJ, Tan LL, Ng YH, Yong ST, Chai SP. Graphitic Carbon Nitride (g-C3N4)-Based Photocatalysts for Artificial Photosynthesis and Environmental Remediation: Are We a Step Closer To Achieving Sustainability? Chem Rev 2016; 116:7159-329. [DOI: 10.1021/acs.chemrev.6b00075] [Citation(s) in RCA: 4328] [Impact Index Per Article: 541.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Wee-Jun Ong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Yun Hau Ng
- Particles
and Catalysis Research Group (PARTCAT), School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Siek-Ting Yong
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
| | - Siang-Piao Chai
- Multidisciplinary
Platform of Advanced Engineering, Chemical Engineering Discipline,
School of Engineering, Monash University, Jalan Lagoon Selatan, Bandar Sunway, 47500 Selangor, Malaysia
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