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Taha M, Khalid A, Elmahgary MG, Medany SS, Attia YA. Fabricating a 3D floating porous PDMS - Ag/AgBr decorated g-C 3N 4 nanocomposite sponge as a re-usable visible light photocatalyst. Sci Rep 2024; 14:4184. [PMID: 38378707 PMCID: PMC10879194 DOI: 10.1038/s41598-024-54500-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/13/2024] [Indexed: 02/22/2024] Open
Abstract
In this study, polymeric graphitic carbon nitride (g-C3N4) semiconductors was synthesized via a thermal condensation method. Subsequently, Ag/AgBr nanoparticles with varying ratios were decorated onto the g-C3N4 surface using the water/oil emulsion method. The resulting nanocomposites were characterized using XRD for phase identification and structural analysis, HR-TEM and SEM&EDAX for morphological structure, particle size, and elemental composition analysis, and XPS for investigating the chemical state and electronic structure. The impact of Ag/AgBr content on the optical properties of g-C3N4 were also studied such as (optical bandgap (Eg), refractive index (n), extinction coefficient (k), optical conductivity (σopt) and dielectric function (ε*)), Electrochemical impedance spectroscopy (EIS), PL spectroscopy and Chrono-amperometric investigations were conducted to assess the charge transfer capabilities and long-term durability of the prepared nanocomposites. The results revealed a reduction in Ag/AgBr particle size with an increase in g-C3N4 content, accompanied by a decrease in the optical bandgap from 2.444 eV to 2.393 eV. Furthermore, the nanocomposites exhibited enhanced degradation efficiencies of RhB dye, with the highest tested content of Ag/AgBr achieving 100% degradation after 120 min of irradiation. However, the challenge of catalyst separation after the degradation process remained. To address this issue, we developed a novel approach by impregnating Ag/AgBr@g-C3N4 photocatalyst onto a floating porous sponge using a simple sugar-template technique, offering potential as a reusable photocatalyst material. Furthermore, the 3D PDMS - Ag/AgBr@g-C3N4 photocatalyst was evaluated and found to maintain nearly the same photocatalytic efficiency for up to 5 consecutive cycles.
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Affiliation(s)
- Mohamed Taha
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt.
| | - A Khalid
- Department of Basic Engineering Sciences, Faculty of Engineering (Shoubra), Benha University, Benha, Egypt
| | - Maryam G Elmahgary
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA
- Chemical Engineering Department, The British University in Egypt (BUE), Elshrouk City, Cairo, Egypt
| | - Shymaa S Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Yasser A Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza, 12613, Egypt
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2
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Tarighati Sareshkeh A, Seyed Dorraji MS, Karami Z, Shahmoradi S, Fekri E, Daneshvar H, Rasoulifard MH, Karimov DN. Preparation of high-crystalline and non-metal modified g-C 3N 4 for improving ultrasound-accelerated white-LED-light-driven photocatalytic performances. Sci Rep 2023; 13:15079. [PMID: 37699970 PMCID: PMC10497575 DOI: 10.1038/s41598-023-41473-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/27/2023] [Indexed: 09/14/2023] Open
Abstract
As a non-metallic organic semiconductor, graphitic carbon nitride (g-C3N4) has received much attention due to its unique physicochemical properties. However, the photocatalytic activity of this semiconductor faces challenges due to factors such as low electronic conductivity and limited active sites provided on its surface. The morphology and structure of g-C3N4, including macro/micro morphology, crystal structure and electronic structure can affect its catalytic activity. Non-metallic heteroatom doping is considered as an effective method to tune the optical, electronic and other physicochemical properties of g-C3N4. Here, we synthesized non-metal-doped highly crystalline g-C3N4 by one-pot calcination method, which enhanced the photocatalytic activity of g-C3N4 such as mesoporous nature, reduced band gap, wide-range photousability, improved charge carrier recombination, and the electrical conductivity was improved. Hence, the use of low-power white-LED-light illumination (λ ≥ 420 nm) and ultrasound (US) irradiation synergistically engendered the Methylene Blue (MB) mineralization efficiency elevated to 100% within 120 min by following the pseudo-first-order mechanism under the following condition (i.e., pH 11, 0.75 g L-1 of O-doped g-C3N4 and S-doped g-C3N4, 20 mg L-1 MB, 0.25 ml s-1 O2, and spontaneous raising temperature). In addition, the rapid removal of MB by sonophotocatalysis was 4 times higher than that of primary photocatalysis. And radical scavenging experiments showed that the maximum distribution of active species corresponds to superoxide radical [Formula: see text]. More importantly, the sonophotocatalytic degradation ability of O-doped g-C3N4 and S-doped g-C3N4 was remarkably sustained even after the sixth consecutive run.
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Affiliation(s)
- Abdolreza Tarighati Sareshkeh
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Mir Saeed Seyed Dorraji
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran.
| | - Zhaleh Karami
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Saeedeh Shahmoradi
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Elnaz Fekri
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Hoda Daneshvar
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Mohammad Hossein Rasoulifard
- Applied Chemistry Research Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
| | - Denis N Karimov
- Federal Scientific Research Center "Crystallography and Photonics", Russian Academy of Sciences, Leninsky Prospekt 59, 119333, Moscow, Russia.
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3
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Wang P, Han X, Zheng X, Wang Z, Li C, Zhao Z. Removal of Tetracycline Hydrochloride by Photocatalysis Using Electrospun PAN Nanofibrous Membranes Coated with g-C3N4/Ti3C2/Ag3PO4. Molecules 2023; 28:molecules28062647. [PMID: 36985618 PMCID: PMC10057984 DOI: 10.3390/molecules28062647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/07/2023] [Accepted: 03/11/2023] [Indexed: 03/17/2023] Open
Abstract
In order to improve the photocatalytic performance of g-C3N4, the g-C3N4/Ti3C2/Ag3PO4 S-type heterojunction catalyst was prepared by electrostatic assembly method, and then the g-C3N4/Ti3C2/Ag3PO4/PAN composite nanofiber membrane was prepared by electrospinning technology. The morphology and chemical properties of the nanofiber membrane were characterized by SEM, FTIR, and XRD, and the photocatalytic degradation of tetracycline hydrochloride (TC) in water by the nanofiber membrane was investigated. The results showed that g-C3N4/Ti3C2/Ag3PO4 could be successfully loaded on PAN and uniformly distributed on the surface of composite nanofiber membrane by electrospinning technology. Increasing the amount of loading and catalyst, lowering the pH value and TC concentration of the system were conducive to the oxidation and degradation of TC. The nano-fiber catalytic membrane had been recycled five times and found to have excellent photocatalytic stability and reusability. The study of catalytic mechanism showed that h+, •OH and •O2− were produced and participated in the oxidation degradation reaction of TC, and •O2− plays a major role in catalysis. Therefore, this work provides a new insight into the construction of high-performance and high-stability photocatalytic system by electrospinning technology.
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Affiliation(s)
- Peng Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
- Anhui Province College of Anhui Province College Key Laboratory of Textile Fabrics, Wuhu 241000, China
| | - Xu Han
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
| | - Xianhong Zheng
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zongqian Wang
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
| | - Changlong Li
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
- Anhui Province College of Anhui Province College Key Laboratory of Textile Fabrics, Wuhu 241000, China
- Correspondence: (C.L.); (Z.Z.)
| | - Zhiqi Zhao
- School of Textile and Garment, Anhui Polytechnic University, Wuhu 241000, China
- Correspondence: (C.L.); (Z.Z.)
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Recent Advances in g-C 3N 4-Based Materials and Their Application in Energy and Environmental Sustainability. Molecules 2023; 28:molecules28010432. [PMID: 36615622 PMCID: PMC9823828 DOI: 10.3390/molecules28010432] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/22/2022] [Accepted: 12/25/2022] [Indexed: 01/05/2023] Open
Abstract
Graphitic carbon nitride (g-C3N4), with facile synthesis, unique structure, high stability, and low cost, has been the hotspot in the field of photocatalysis. However, the photocatalytic performance of g-C3N4 is still unsatisfactory due to insufficient capture of visible light, low surface area, poor electronic conductivity, and fast recombination of photogenerated electron-hole pairs. Thus, different modification strategies have been developed to improve its performance. In this review, the properties and preparation methods of g-C3N4 are systematically introduced, and various modification approaches, including morphology control, elemental doping, heterojunction construction, and modification with nanomaterials, are discussed. Moreover, photocatalytic applications in energy and environmental sustainability are summarized, such as hydrogen generation, CO2 reduction, and degradation of contaminants in recent years. Finally, concluding remarks and perspectives on the challenges, and suggestions for exploiting g-C3N4-based photocatalysts are presented. This review will deepen the understanding of the state of the art of g-C3N4, including the fabrication, modification, and application in energy and environmental sustainability.
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Sharma MD, Basu M. Nanosheets of In 2S 3/S-C 3N 4-Dots for Solar Water-Splitting in Saline Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12981-12990. [PMID: 36218026 DOI: 10.1021/acs.langmuir.2c02390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Hydrogen generation from splitting of water under the photoelectrochemical (PEC) pathway is considered as the most promising strategy for covering the upcoming fuel crisis by taking care of all environmental issues. In this context, In2S3 can be explored as it is a visible light-active semiconductor with an appropriate band alignment with the water redox potential. Herein, In2S3 nanosheets are developed by the chemical method. The nanosheets of In2S3 absorb high visible light due to the manifold inside scattering and reflection. The PEC activity of In2S3 is enhanced because of the increase in the light absorbance of the materials. In the present work, at 1.18 V versus RHE in 3.5 wt % NaCl, a maximum 2.07 mA/cm2 photocurrent density can be achieved by In2S3 nanosheets. However, In2S3 suffers strongly due to photo-corrosion. To improve the efficacy of the In2S3 nanosheets in saline water, the charge-carrier transportation ability of In2S3 is aimed to increase by decorating S-C3N4-dots on In2S3. The heterostructure of type-II is developed by sensitization of S-C3N4-dots on In2S3. It increases both the transportation of charge carriers as well as separation. In the heterostructure, the transient decay time (τ) increases, which indicates a decrease in photogenerated charge-carrier recombination. S-C3N4-dots also act as an optical antenna and increase the range of visible light absorbance of In2S3. The heterostructure can generate ∼2.38-fold higher photocurrent density of 1.18 V versus RHE in 3.5 wt % NaCl. The photoconversion efficiency of the heterostructure is 0.88% at 0.95 V versus RHE. The nanosheets of In2S3 and In2S3/S-C3N4-dots are stable, and photocurrent density is measured up to 2700 s under continuous back-illumination conditions.
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Affiliation(s)
- Mamta Devi Sharma
- Department of Chemistry, BITS Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Mrinmoyee Basu
- Department of Chemistry, BITS Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
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6
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Porcu S, Secci F, Ricci PC. Advances in Hybrid Composites for Photocatalytic Applications: A Review. Molecules 2022; 27:molecules27206828. [PMID: 36296421 PMCID: PMC9607189 DOI: 10.3390/molecules27206828] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/07/2022] [Accepted: 10/09/2022] [Indexed: 11/16/2022] Open
Abstract
Heterogeneous photocatalysts have garnered extensive attention as a sustainable way for environmental remediation and energy storage process. Water splitting, solar energy conversion, and pollutant degradation are examples of nowadays applications where semiconductor-based photocatalysts represent a potentially disruptive technology. The exploitation of solar radiation for photocatalysis could generate a strong impact by decreasing the energy demand and simultaneously mitigating the impact of anthropogenic pollutants. However, most of the actual photocatalysts work only on energy radiation in the Near-UV region (<400 nm), and the studies and development of new photocatalysts with high efficiency in the visible range of the spectrum are required. In this regard, hybrid organic/inorganic photocatalysts have emerged as highly potential materials to drastically improve visible photocatalytic efficiency. In this review, we will analyze the state-of-art and the developments of hybrid photocatalysts for energy storage and energy conversion process as well as their application in pollutant degradation and water treatments.
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Affiliation(s)
- Stefania Porcu
- Department of Physics, University of Cagliari, S.P. No. 8 Km 0.700, 09042 Monserrato, Italy
| | - Francesco Secci
- Department of Chemical and Geological Science, University of Cagliari, S.P. No. 8 Km 0.700, 09042 Monserrato, Italy
| | - Pier Carlo Ricci
- Department of Physics, University of Cagliari, S.P. No. 8 Km 0.700, 09042 Monserrato, Italy
- Correspondence: ; Tel.: +39-070675-4821
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7
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Yao J, Wang L, Zhou H, Xie Z, Zeng X, Liu C. Cuprous oxide coated silver/graphitic carbon nitride/cadmium sulfide nanocomposite heterostructure: Specific recognition of carcinoembryonic antigen through sandwich-type mechanism. J Colloid Interface Sci 2022; 616:858-871. [PMID: 35257935 DOI: 10.1016/j.jcis.2021.11.103] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 11/17/2021] [Accepted: 11/18/2021] [Indexed: 01/10/2023]
Abstract
The development of the effective diagnostic method for the determination of cancer biomarkers is one of the most promising strategies for early clinical diagnosis of cancer. Here, based on the preparation of heterogeneous cuprous oxide coated silver (Ag@Cu2O) nanocomposites/graphitic carbon nitride (g-C3N4)/cadmium sulfide (CdS) nanoarrays structure, a highly sensitive photoelectrochemical (PEC) biosensor for the examination of carcinoembryonic antigen (CEA) has been constructed successfully. The combination of photoactive semiconductor materials g-C3N4 and CdS increases the electron transfer rate between them and enhances their photocurrent response, thus greatly increasing the concentration detection range. At the same time, the specific recognition between antigen and antibody is used to form a sandwich structure secondary antibody (Ab2)/CEA/antibody (Ab1). And because Ag@Cu2O has the function of absorbing light and consuming electron donor. Therefore, the successful measurement of CEA was achieved by labeling Ag@Cu2O on Ab2 and finally immobilizing it on the sensor to correlate the current reduction with the CEA concentration. The sandwich PEC biosensor proposed by this signal amplification strategy under optimal conditions has good analytical performance for CEA, with a wide linear detection range (from 10-5 to 1 ng/mL) and a low detection limit of 0.0011 pg/mL. The PEC biosensor constructed by this method showed high sensitivity, excellent anti-interference ability, favourable repeatability, and good stability.
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Affiliation(s)
- Jun Yao
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China; State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, People's Republic of China.
| | - Li Wang
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Hongyan Zhou
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Zhuang Xie
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Xiang Zeng
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China
| | - Chaohui Liu
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, People's Republic of China
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8
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Chen Q, Liang W, Shi X, Yang M, Qin X, Jiang L, Jia C, Chen F, Luo D. Photodegradation and in‐Situ SERS Monitoring Properties of Ag@AgCl Anchored on Sea Urchin‐shaped Fe
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@C/1D PANI Nanoparticles**. ChemistrySelect 2022. [DOI: 10.1002/slct.202104495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Qingtao Chen
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Weiwei Liang
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Xiangdong Shi
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Maosen Yang
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Xiaoyun Qin
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Liying Jiang
- Department of Electrical and Information Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Chunxiao Jia
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Fenghua Chen
- Department of Materials and Chemical Engineering Zhengzhou University of Light Industry 450002 Zhengzhou China
| | - Dan Luo
- CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences 100083 Beijing China
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9
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Azhdari A, Azizi N, Sanaeishoar H, Tahanpesar E. Sb(III)-Impregnated Magnetic Carbon Nitride Nanosheets: Preparation, Characterization, and Evaluation of Its Catalytic Activity for Synthesis of Imidazo-Pyridines. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2036776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Asieh Azhdari
- Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - Najmedin Azizi
- Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
| | - Haleh Sanaeishoar
- Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
| | - Elham Tahanpesar
- Department of Chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
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10
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Taha M, Mohamed YMA, Medany SS, Attia YA. Nano Ag/AgBr/g-C 3N 4 catalyzed the production of hydrogen and reduction of d-glucose to sorbitol under visible light irradiation. NEW J CHEM 2022. [DOI: 10.1039/d2nj03422k] [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
In this study, the polymeric graphitic carbon nitride (g-C3N4) was modified by anchoring Ag/AgBr to improve its charge separation efficiency.
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Affiliation(s)
- Mohamed Taha
- National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt
| | | | - Shymaa S. Medany
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Yasser A. Attia
- National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt
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11
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Giant enhanced photocatalytic H2O2 production over hollow hexagonal prisms carbon nitride. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.09.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Aseervatham G SB, Devanesan AA, Ali DJ. Nanobiocatalysts and photocatalyst in dye degradation. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2021-0059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In the modern era, the world today is in a mission for a new method of environmental bioremediation in faltering the damage, especially in polluted water. Recently, the global direction is regulated toward an alteration from the usual chemical-based methods to a supplementary ecofriendly green alternative. In this perspective, biocatalysts are appreciated as an economical and clean substitute which was meant to catalyze degradation of unmanageable chemicals in a rapid, green and ecologically stable manner. Among the various sources of water pollution, the textile manufacturing industries were thought to be a major dispute due to release of effluents in natural water bodies such as rivers. Other industries like paper, pulp and tannery pharmaceutical industries were also responsible in contaminating the water bodies. Photocatalysis was considered as an auspicious method for the removal of dyes from the natural bodies, specifically those with hard organic compounds; using enzymes. The present chapter briefly emphasizes on the effective methods used for degradation of dye effluents; their importance of photocatalytic and biocatalytic solution to the current environmental difficulties and future opportunities are discussed.
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Affiliation(s)
- Smilin Bell Aseervatham G
- PG and Research Department of Biotechnology & Bioinformatics , Holy Cross College (Autonomous) , Tiruchirappalli 620002 , Tamil Nadu , India
| | - Arul Ananth Devanesan
- Department of Biotechnology , Karpagam Academy of Higher Education , Pollachi Main Road, Eachanari Post , Coimbatore 641021 , Tamil Nadu , India
| | - Doulathunnisa Jaffar Ali
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University , Nanjing , Jiangsu , 210096 , China
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Nguyen MB, Le GH, Nguyen TD, Nguyen QK, Pham TTT, Lee T, Vu TA. Bimetallic Ag-Zn-BTC/GO composite as highly efficient photocatalyst in the photocatalytic degradation of reactive yellow 145 dye in water. JOURNAL OF HAZARDOUS MATERIALS 2021; 420:126560. [PMID: 34274809 DOI: 10.1016/j.jhazmat.2021.126560] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/05/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
Agx-Zn100-x-BTC/GO composites (BTC: benzene-1,3,5-tricarboxylic, GO: graphene oxide) with different Ag/Zn molar ratios were synthesized using microwave-assisted hydrothermal treatment. The Agx-Zn100-x-BTC/GO exhibited excellent photocatalytic performance in the reactive yellow 145 dye (RY-145) degradation under irradiation of visible light with nearly 100% of RY-145 removal after 35 min, as compared to Zn-BTC/GO and Ag-BTC/GO. Reactive oxygen species scavenging assays have shown that the holes (h+) and superoxide radical anion (O2-•) play a primary role in RY-145 degradation. Based on the band structure of materials, the Z-scheme photocatalytic mechanism was suggested. The effect of catalyst dosage, pH and dye concentration on the efficiency of photocatalytic activity of bimetallic Ag50-Zn50-BTC/GO was also investigated. The improvement in photocatalytic activity of bimetallic Ag50-Zn50-BTC/GO could be given by the synergism of (i) absorption of visible light confirmed by UV-Vis diffuse reflectance spectra; (ii) the increased lifetime as evidenced by photoluminescence spectra and transient photocurrent response; (iii) the increased oxygen vacancy defects as confirmed by X-ray photoelectron spectroscopy results. The degradation pathway of RY-145 dye was also predicted based on liquid chromatography-mass spectrometer analysis. The removed chemical oxygen demand, biological oxygen demand, total organic carbon outcomes indicated the high mineralization ability for RY-145 degradation over Ag50-Zn50-BTC/GO.
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Affiliation(s)
- Manh B Nguyen
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet street, Cau Giay, Ha Noi, Viet Nam; Hanoi University of Science and Technology (HUST), 01 Dai Co Viet Road, Ha Noi City, Viet Nam
| | - Giang H Le
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet street, Cau Giay, Ha Noi, Viet Nam
| | - Trinh Duy Nguyen
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea; Institute of Environmental Sciences, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam.
| | - Quang K Nguyen
- MIREA Russian Technological University, Moscow 119571, Russia
| | - Trang T T Pham
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet street, Cau Giay, Ha Noi, Viet Nam
| | - Taeyoon Lee
- Department of Environmental Engineering, College of Environmental and Marine, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Republic of Korea
| | - Tuan A Vu
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet street, Cau Giay, Ha Noi, Viet Nam
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Kuna E, Mrdenovic D, Jönsson-Niedziółka M, Pieta P, Pieta IS. Bimetallic nanocatalysts supported on graphitic carbon nitride for sustainable energy development: the shape-structure-activity relation. NANOSCALE ADVANCES 2021; 3:1342-1351. [PMID: 36132874 PMCID: PMC9416898 DOI: 10.1039/d0na01063d] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/06/2021] [Accepted: 01/19/2021] [Indexed: 06/16/2023]
Abstract
The catalytic performance of metal nanoparticles (NPs), including activity, selectivity, and durability, depends on their shape and structure at the molecular level. Consequently, metal NPs of different size and shape, e.g., nanobelts, nanocubes, nanoflakes, and nanowires, demonstrate different reactivity and provide different reaction rates depending on the facet exposed. In this context, the present review aims to summarize the shape-structure-activity relation of metallic nanocatalysts. Moreover, keeping in mind that the application of noble metal catalysts is expensive, we would like to draw the reader's attention to bimetallic nanocatalysts supported on graphitic carbon nitride. One of the advantages of these systems is the possibility to minimize the use of noble metals by introducing another metal either to the parent NPs and/or modifying the support materials. The development and optimization of bimetallic nanocatalysts might provide the new class of materials with superior, tunable performance, thermal stability and reduced costs compared to presently available commercial catalysts. Therefore, further application of these bimetallic composites for sustainable development in energy, green chemicals/fuels and environmental protection will be discussed.
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Affiliation(s)
- Ewelina Kuna
- Institute of Physical Chemistry Polish Academy of Sciences 01-224 Warsaw Poland
| | - Dusan Mrdenovic
- Institute of Physical Chemistry Polish Academy of Sciences 01-224 Warsaw Poland
| | | | - Piotr Pieta
- Institute of Physical Chemistry Polish Academy of Sciences 01-224 Warsaw Poland
| | - Izabela S Pieta
- Institute of Physical Chemistry Polish Academy of Sciences 01-224 Warsaw Poland
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Rani E, Talebi P, Cao W, Huttula M, Singh H. Harnessing photo/electro-catalytic activity via nano-junctions in ternary nanocomposites for clean energy. NANOSCALE 2020; 12:23461-23479. [PMID: 33211053 DOI: 10.1039/d0nr05782g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Though solar energy availability is predicted for centuries, the diurnal and asymmetrical nature of the sun across the globe presents significant challenges in terms of harvesting sunlight. Photo/electro-catalysis, currently believed to be the bottleneck, promises a potential solution to these challenges along with a green and sustainable environment. This review aims to provide the current highlights on the application of inorganic-semiconductor-based ternary nanocomposites for H2 production and pollutant removal. Various engineering strategies employing integration of 2D materials, 1D nanorods, and/or 0D nanoparticles with inorganic semiconductors to create multiple nano-junctions have been developed for the excellent photocatalytic activity. Following a succinct description of the latest progress in photocatalysts, a discussion on the importance of ternary electrocatalysts in the field of next-generation supercapacitors has been included. Finally, the authors' perspectives are considered briefly, including future developments and critical technical challenges in the ever-growing field of photo/electro-catalysis.
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Affiliation(s)
- Ekta Rani
- Nano and Molecular Systems Research Unit, University of Oulu, FIN-90014, Finland.
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16
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Bai X, Wang X, Lu X, Liang Y, Li J, Wu L, Li H, Hao Q, Ni BJ, Wang C. Surface defective g-C 3N 4-xCl x with unique spongy structure by polarization effect for enhanced photocatalytic removal of organic pollutants. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122897. [PMID: 32516728 DOI: 10.1016/j.jhazmat.2020.122897] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Natural sponge is an ancient marine organism with a single lamellar structure, on which there are abundant porous channels to compose full-fledged spatial veins. Illumined by the natural spongy system, herein, the Cl doped surface defective graphite carbon nitride (g-C3N4-xClx) was constructed through microwave etching. In this process, microwave with HCl was employed to produce surface defects and peel bulk g-C3N4 to form natural spongy structured g-C3N4-xClx with three-dimensional networks. The spongy structure of the photocatalyst could provide abundant and unobstructed pathways for the transfer and separation of electron-hole pairs, and it was beneficial for photocatalytic reaction. The spongy defective g-C3N4-xClx achieved excellent degradation of diclofenac sodium (100%), bisphenol A (88.2%), phenol (85.7%) and methylene blue (97%) solution under simulated solar irradiation, respectively. The chlorine atoms were introduced into the g-C3N4 skeleton in microwave field with HCl, forming C-Cl bonds and surface polarization field, which could significantly accelerate the separation of photogenerated electrons and holes. As an efficient and universal approach, microwave etching can be generally used to create surface defects for most photocatalysts, which may have potential applications in environmental purification, energy conversion and photodynamic therapy.
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Affiliation(s)
- Xiaojuan Bai
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China.
| | - Xuyu Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Xiongwei Lu
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Yunjie Liang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
| | - Junqi Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China
| | - Liyuan Wu
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China
| | - Haiyan Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Advanced Innovation Center For Future Urban Design, Beijing, 100044, China.
| | - Qiang Hao
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney, NSW 2007, Australia
| | - Bing-Jie Ni
- Centre for Technology in Water and Wastewater (CTWW), School of Civil and Environmental Engineering, University of Technology Sydney (UTS), Sydney, NSW 2007, Australia
| | - Chongchen Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
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Corredor J, Perez-Peña E, Rivero MJ, Ortiz I. Performance of rGO/TiO 2 Photocatalytic Membranes for Hydrogen Production. MEMBRANES 2020; 10:membranes10090218. [PMID: 32882856 PMCID: PMC7558141 DOI: 10.3390/membranes10090218] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 11/16/2022]
Abstract
Although there are promising environmental and energy characteristics for the photocatalytic production of hydrogen, two main drawbacks must be overcome before the large- scale deployment of the technology becomes a reality, (i) the low efficiency reported by state of the art photocatalysts and, (ii) the short life time and difficult recovery of the photocatalyst, issues that need research and development for new high performance catalysts. In this work 2% rGO/TiO2 composite photocatalysts were supported over Nafion membranes and the performance of the photocatalytic membrane was tested for hydrogen production from a 20% vol. methanol solution. Immobilization of the composite on Nafion membranes followed three different simple methods which preserve the photocatalyst structure: solvent-casting (SC), spraying (SP), and dip-coating (DP). The photocatalyst was included in the matrix membrane using the SC method, while it was located on the membrane surface in the SP and DP membranes showing less mass transfer limitations. The performance of the synthesized photocatalytic membranes for hydrogen production under UVA light irradiation was compared. Leaching of the catalytic membranes was tested by measuring the turbidity of the solution. With respect to catalyst leaching, both the SC and SP membranes provided very good results, the leaching being lower with the SC membrane. The best results in terms of initial hydrogen production rate (HPR) were obtained with the SP and DP membrane. The SP was selected as the most suitable method for photocatalytic hydrogen production due to the high HPR and the negligible photocatalyst leaching. Moreover, the stability of this membrane was studied for longer operation times. This work helps to improve the knowledge on the application of photocatalytic membranes for hydrogen production and contributes in facilitating the large-scale application of this process.
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18
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Mohammadi P, Heravi MM, Sadjadi S. Green synthesis of Ag NPs on magnetic polyallylamine decorated g-C 3N 4 by Heracleum persicum extract: efficient catalyst for reduction of dyes. Sci Rep 2020; 10:6579. [PMID: 32313151 PMCID: PMC7171167 DOI: 10.1038/s41598-020-63756-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/02/2020] [Indexed: 11/09/2022] Open
Abstract
Silver nanoparticles were immobilized on magnetic polyallylamine (PAA) decorated g-C3N4 by using Heracleum persicum extract as a biological reducing and stabilizing agent. The resulting nanocomposite, Fe3O4-g-C3N4-TCT-PAA-Ag, was then characterized using BET, VSM, XRD, TGA, FTIR, TEM, EDS and ICP. The catalytic performance of the synthesized nanocatalyst was considered in the reduction of rhodamine B, and methyl orange in the presence of sodium borohydride in the aqueous medium at room temperature. The results showed that Fe3O4-g-C3N4-TCT-PAA-Ag nanocomposite could promote both reduction reactions efficiently in very short reaction times (70-100 s). In addition, Fe3O4-g-C3N4-TCT-PAA-Ag could be magnetically recovered and recycled for several cycles with no significant decrease in its catalytic performance. Using the experimental results, the rate constant, enthalpy, and entropy of the reduction reactions of both dyes were estimated.
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Affiliation(s)
- Pourya Mohammadi
- Department of Chemistry, School of Science, Alzahra University, PO Box 1993891176, Vanak, Tehran, Iran
| | - Majid M Heravi
- Department of Chemistry, School of Science, Alzahra University, PO Box 1993891176, Vanak, Tehran, Iran.
| | - Samahe Sadjadi
- Gas Conversion Department, Faculty of Petrochemicals, Iran polymer and Petrochemicals Institute, 15 km Tehran-Karaj Highway, Pajuhesh Science and Technology Park, Pajuhesh Boulevard, postal cod; 14977-13115, PO Box 14975-112, Tehran, Iran.
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