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Ashraf M, Ali R, Khan I, Ullah N, Ahmad MS, Kida T, Wooh S, Tremel W, Schwingenschlögl U, Tahir MN. Bandgap Engineering of Melon using Highly Reduced Graphene Oxide for Enhanced Photoelectrochemical Hydrogen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2301342. [PMID: 37548517 DOI: 10.1002/adma.202301342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 06/30/2023] [Indexed: 08/08/2023]
Abstract
The uncondensed form of polymeric carbon nitrides (PCN), generally known as melon, is a stacked 2D structure of poly(aminoimino)heptazine. Melon is used as a photocatalyst in solar energy conversion applications, but suffers from poor photoconversion efficiency due to weak optical absorption in the visible spectrum, high activation energy, and inefficient separation of photoexcited charge carriers. Experimental and theoretical studies are reported to engineer the bandgap of melon with highly reduced graphene oxide (HRG). Three HRG@melon nanocomposites with different HRG:melon ratios (0.5%, 1%, and 2%) are prepared. The 1% HRG@melon nanocomposite shows higher photocurrent density (71 µA cm-2 ) than melon (24 µA cm-2 ) in alkaline conditions. The addition of a hole scavenger further increases the photocurrent density to 630 µA cm-2 relative to the reversible hydrogen electrode (RHE). These experimental results are validated by calculations using density functional theory (DFT), which revealed that HRG results in a significant charge redistribution and an improved photocatalytic hydrogen evolution reaction (HER).
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Affiliation(s)
- Muhammad Ashraf
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dharan, 31261, Kingdom of Saudi Arabia
| | - Roshan Ali
- Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Ibrahim Khan
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Nisar Ullah
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dharan, 31261, Kingdom of Saudi Arabia
| | - Muhammad Sohail Ahmad
- International Research Organization for Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
- Institute of Industrial Nanomaterials, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
| | - Tetsuya Kida
- International Research Organization for Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
- Institute of Industrial Nanomaterials, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555, Japan
- Department of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Sanghyuk Wooh
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Wolfgang Tremel
- Chemistry Department, Johannes Gutenberg-University, Duesbergweg 10-14, D-55128, Mainz, Germany
| | - Udo Schwingenschlögl
- Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | - Muhammad Nawaz Tahir
- Chemistry Department, King Fahd University of Petroleum & Minerals, Dharan, 31261, Kingdom of Saudi Arabia
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
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Gao J, Qian X, Wei Q, Chen Z, Liu C, Wang W, Chen J, Chen X, Liu Y, Wei G. Construction of core-shell cesium lead bromide-silica by precipitation coating method with applications in aqueous photocatalysis. J Colloid Interface Sci 2022. [DOI: 10.1016/j.jcis.2022.05.116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Lin B, Xia M, Xu B, Chong B, Chen Z, Yang G. Bio-inspired nanostructured g-C3N4-based photocatalysts: A comprehensive review. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64110-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Du S, He T, Nie H, Yang G. High-Performance Wigs via the Langmuir-Blodgett Deposition of Keratin/Graphene Oxide Nanocomposite. ACS APPLIED MATERIALS & INTERFACES 2022; 14:27233-27241. [PMID: 35656923 DOI: 10.1021/acsami.2c05965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Wigs provide a common service as hair accessories in people's daily life. However, the traditional wigs, regardless of the matrices derived from human hair or synthetic fibers, are faced with limitations such as short service life, dry and brittle texture, and static electricity. In this work, we described a new strategy for surface coating of wigs via the Langmuir-Blodgett (LB) technique using a nanocomposite composed of hair-derived keratin and graphene oxide (Ker/GO). In contrast to the conventionally used immersion method, this strategy achieved a significantly higher surface coverage with a close-packed structure and controlled deposition layers of the coating, thus delivering high performances, including greatly enhanced ultraviolet (UV) resistance, antistatic electricity, heat dissipation, hydroscopicity, and moisturizing ability, and durability against washing, for both the human hair and synthetic-fiber-based wigs.
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Affiliation(s)
- Shan Du
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road No. 2999, Shanghai 201620, China
| | - Tiantian He
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road No. 2999, Shanghai 201620, China
| | - Huali Nie
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road No. 2999, Shanghai 201620, China
| | - Guang Yang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, North Ren Min Road No. 2999, Shanghai 201620, China
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Sabry N, Hussien MS, Yahia I. Eco-friendly synthesis of g-carbon nitride coated graphene nanocomposites for superior visible photodegradation of hydroquinone: Physicochemical mechanisms and photo-Fenton effect. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2021.113734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Environment Friendly g-C3N4-Based Catalysts and Their Recent Strategy in Organic Transformations. HIGH ENERGY CHEMISTRY 2022. [PMCID: PMC8960706 DOI: 10.1134/s0018143922020102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Organic molecules synthesized in an environmentally friendly manner have excellent therapeutic potential. The entire preparation technique was examined in the existence of a light source, implying that light has been replaced by heating and the usage of dangerous chemicals has decreased, resulting in less pollution of the environment. The advantages of these nanocarbon catalysts include high efficiency, environmentally friendly synthesis, eco-friendly, inexpensive, and non-corrodible. In organic transformations, solid metal base/metal-free catalysts produce better results. Here, the metal-free semiconductor g-C3N4 was used to demonstrate the catalytic behavior of organic conversions. g-C3N4 is a two-dimensional material and a p‑type semiconductor to enhance the photocatalytic activity. The excellent properties of g-C3N4 sheet lead to the support of metals to form metal-organic frameworks. Most of the reactions gained positive response under visible light irradiation. This review will inspire readers in widen the applications of g-C3N4 based catalyst in various organic transformation reactions.
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Jilani A, Hussain SZ, Melaibari AA, Abu-Hamdeh NH. Development and Mechanistic Studies of Ternary Nanocomposites for Hydrogen Production from Water Splitting to Yield Sustainable/Green Energy and Environmental Remediation. Polymers (Basel) 2022; 14:polym14071290. [PMID: 35406164 PMCID: PMC9003420 DOI: 10.3390/polym14071290] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 12/04/2022] Open
Abstract
Photocatalysts lead vitally to water purifications and decarbonise environment each by wastewater treatment and hydrogen (H2) production as a renewable energy source from water-photolysis. This work deals with the photocatalytic degradation of ciprofloxacin (CIP) and H2 production by novel silver-nanoparticle (AgNPs) based ternary-nanocomposites of thiolated reduce-graphene oxide graphitic carbon nitride (AgNPs-S-rGO2%@g-C3N4) material. Herein, the optimised balanced ratio of thiolated reduce-graphene oxide in prepared ternary-nanocomposites played matchlessly to enhance activity by increasing the charge carriers’ movements via slowing down charge-recombination ratios. Reduced graphene oxide (rGO), >2 wt.% or <2 wt.%, rendered H2 production by light-shielding effect. As a result, CIP degradation was enhanced to 95.90% by AgNPs-S-rGO2%@g-C3N4 under the optimised pH(6) and catalyst dosage(25 mg/L) irradiating beneath visible-light (450 nm, 150 watts) for 70 min. The chemical and morphological analysis of AgNPs-S-rGO2%@g-C3N4 surface also supported the possible role of thiolation for this enhancement, assisted by surface plasmon resonance of AgNPs having size < 10 nm. Therefore, AgNPs-S-rGO2%@g-C3N4 has 3772.5 μmolg−1 h−1 H2 production, which is 6.43-fold higher than g-C3N4 having cyclic stability of 96% even after four consecutive cycles. The proposed mechanism for AgNPs-S-rGO2%@g-C3N4 revealed that the photo-excited electrons in the conduction-band of g-C3N4 react with the adhered water moieties to generate H2.
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Affiliation(s)
- Asim Jilani
- Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Correspondence: or ; Tel.: +966-599693297
| | - Syed Zajif Hussain
- Department of Chemistry & Chemical Engineering, SBA-School of Science & Engineering (SBA-SSE), Lahore University of Management Sciences (LUMS), Lahore 54792, Pakistan;
| | - Ammar A. Melaibari
- Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Mechanical Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Nidal H. Abu-Hamdeh
- Department of Mechanical Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center of Research Excellence in Renewable Energy and Power System, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Ma J, Liu K, Yang X, Jin D, Li Y, Jiao G, Zhou J, Sun R. Recent Advances and Challenges in Photoreforming of Biomass-Derived Feedstocks into Hydrogen, Biofuels, or Chemicals by Using Functional Carbon Nitride Photocatalysts. CHEMSUSCHEM 2021; 14:4903-4922. [PMID: 34636483 DOI: 10.1002/cssc.202101173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Photoreforming of biomass into hydrogen, biofuels, and chemicals is highly desired, yet this field of research is still in its infancy. Developing an efficient, novel, and environmentally friendly photocatalyst is key to achieving these goals. To date, the nonmetallic and eco-friendly material carbon nitride has found many uses in reactions such as water splitting, CO2 reduction, N2 fixation, and biorefinery, owing to its outstanding photocatalytic activity. However, a narrow light absorption range and fast charge recombination are often encountered in the pristine carbon nitride photocatalytic system, which resulted in unsatisfying photocatalytic activity. To improve the photocatalytic performance of pure carbon nitride in biomass reforming, modification is needed. In this Review, the design and preparation of functional carbon nitride, as well as its photocatalytic properties for the synthesis of hydrogen, biofuels, and chemicals through biomass reforming, are discussed alongside potential avenues for its future development.
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Affiliation(s)
- Jiliang Ma
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Jinan, 250353, P. R. China
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, Fuzhou, 350108, P. R. China
| | - Kangning Liu
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Xiaopan Yang
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Dongnv Jin
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Yancong Li
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Gaojie Jiao
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Jinghui Zhou
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
| | - Runcang Sun
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, Dalian Polytechnic University, Dalian, 116034, P. R. China
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9
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Novel S-scheme 2D/2D BiOBr/g-C3N4 heterojunctions with enhanced photocatalytic activity. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63765-2] [Citation(s) in RCA: 98] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Arunachalapandi M, Roopan SM. Ultrasound/visible light-mediated synthesis of N-heterocycles using g-C3N4/Cu3TiO4 as sonophotocatalyst. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04461-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Dharmaraja C, Nicholas PE, Ramya P, Premkumar II, Vijayan V, Senthilkumar N. Investigation on photocatalytic activity of ZnS/NiFe2O4 NCs under sunlight irradiation via a novel two-step synthesis approach. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108481] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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12
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Synthesis of nitrogen and sulfur doped graphene on graphite foam for electro-catalytic phenol degradation and water splitting. J Colloid Interface Sci 2021; 583:139-148. [PMID: 33002686 DOI: 10.1016/j.jcis.2020.09.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/12/2020] [Accepted: 09/14/2020] [Indexed: 11/21/2022]
Abstract
A rational design of electrode materials with both high electron conductivity and abundant of catalytic sites is essential for high-performance electrochemical reactions. Herein, a nitrogen and sulfur co-doped graphene (SNG) anchored on the interconnected conductive graphite foam (GF) is fabricated via drop-casting and in situ annealing. The SNG flakes are tightly immobilized on the GF surface, which can provide fast electron transfer rate and large electrolyte/electrode interfaces. The SNG@GF composite can be directly used as a free-standing electrode for electro-catalytic degradation of organic pollutants and overall water splitting. SNG@GF significantly enhanced the electrochemical activation of peroxymonosulfate (PMS) for catalytic oxidation. During the oxygen evolution reaction (OER), the SNG@GF exhibits an initial overpotential of 330 mV vs. RHE at 10 mA cm-2 with a Tafel slope of 149 mV dec-1 in 1 M KOH, which outperforms most of the reported metal-free catalysts. The density functional theory calculations are also used to unveil the S, N dual doping effects of carbon materials and their synergy in carbocatalysis. This study dedicates to developing multi-functional carbocatalysts for environmental and energy applications, and enables insights into carbocatalysis in electrochemistry.
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Liu J, Wang S. Convenient and highly sensitive detection of Cu2+ using chitosan solid film with g-C3N4 nanosheets. JOURNAL OF POLYMER ENGINEERING 2021. [DOI: 10.1515/polyeng-2020-0054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractA solid fluorescence sensor composed of g-C3N4 nanosheets and chitosan solid film was fabricated by electrostatic interaction. The g-C3N4 nanosheet/chitosan solid film showed selectivity and sensitivity to Cu2+ which was higher than that of other metal ions in common use. Cu2+ ions were found to efficiently bind and quench the fluorescence of the g-C3N4 nanosheet/chitosan solid film. The absorption band of the g-C3N4 nanosheet/chitosan solid film was at 240 nm in the presence of Cu2+, and the maximum emission peak was at 380 nm. Copper ion concentrations were between 0 and 3.1 × 10−5 mol/L at pH 7, the detection limit is 5 nM, compared with previous reports, it was much lower than before. Good linear relationships existed between the metal ion concentration and fluorescence intensity of g-C3N4 nanosheets in the quenching and recovering processes. This is the first study to report on the detection of Cu2+ by utilizing g-C3N4 nanosheet/chitosan composite film. The as-prepared films were conveniently prepared, easy to operate, and recyclable, as well as sensitive and selective to detect Cu2+ in water. All these features indicate the sensor’s potential application in disease diagnosis.
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Affiliation(s)
- Jing Liu
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, 712000, PR China
| | - Shan Wang
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, 712000, PR China
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Kundu S, Bramhaiah K, Bhattacharyya S. Carbon-based nanomaterials: in the quest of alternative metal-free photocatalysts for solar water splitting. NANOSCALE ADVANCES 2020; 2:5130-5151. [PMID: 36132049 PMCID: PMC9417472 DOI: 10.1039/d0na00569j] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 09/02/2020] [Indexed: 05/24/2023]
Abstract
One of the alarming problems of modern civilization is global warming due to the inevitable rise of CO2 in the environment, mainly because of the excessive use of traditional fossil fuels. The gradual depletion of fossil fuels is another challenge regarding the future energy demand; therefore, alternative renewable energy research is necessary. One of the alternative approaches is the solar fuel generation by means of photocatalytic water splitting and more specifically, hydrogen evolution from water through the reductive half-reaction. Hydrogen is the cleanest fuel and does not produce any greenhouse gas upon direct combustion, or even while acting as a chemical feedstock for other transportable fuel generation. Therefore, it is desirable to produce efficient photocatalysts for solar water splitting. After the discovery of the first photocatalytic water splitting reaction by Fujisima and Honda, several advancements have been made with metal-based inorganic semiconductor photo-catalysts. However, their practical applicability is still under debate considering the environmental sustainability, stability and economical expenses. As a result, it is essential to develop alternate photocatalysts that are environmentally sustainable, cost-effective, stable and highly efficient. The metal-free approach is one of the most promising approaches in this regard. Herein, we discuss the recent developments in carbon-based materials and their hybrids as alternative metal free photocatalysts for solar water splitting. The present discussion includes g-C3N4, two-dimensional graphene/graphene oxides, one-dimensional carbon nanotubes/carbon nanofibers and zero-dimensional graphene QDs/carbon dots. We have focused on the rectification of exciton generation, charge separation and interfacial photochemical processes for photocatalysis, followed by possible optimization pathways of these typical all carbon-based materials. Finally, we have highlighted several fundamental challenges and their possible solutions, as well as the future direction on this particular aspect.
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Affiliation(s)
- Simanta Kundu
- Department of Chemistry, Shibpur Dinobundhoo Institution (College) 412/1, G. T. Road (South), Shibpur Howrah West Bengal 711102 India
| | - Kommula Bramhaiah
- Department of Chemical Sciences, IISER Berhampur, Transit Campus (Govt. ITI) Eng. School Road Berhampur Odisha 760010 India
| | - Santanu Bhattacharyya
- Department of Chemical Sciences, IISER Berhampur, Transit Campus (Govt. ITI) Eng. School Road Berhampur Odisha 760010 India
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Facile synthesis and photoelectrochemical properties of novel TiN/C3N4/CdS nanotube core/shell arrays. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63512-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Gao Y, Duan J, Zhai X, Guan F, Wang X, Zhang J, Hou B. Photocatalytic Degradation and Antibacterial Properties of Fe 3+-Doped Alkalized Carbon Nitride. NANOMATERIALS 2020; 10:nano10091751. [PMID: 32899800 PMCID: PMC7558592 DOI: 10.3390/nano10091751] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 08/24/2020] [Accepted: 08/24/2020] [Indexed: 02/06/2023]
Abstract
Discovering novel materials and improving the properties of existing materials are the main goals in the field of photocatalysis to increase the potential application of the materials. In this paper, a modified graphitic carbon nitride (g-C3N4) photocatalyst named Fe3+-doped alkalized carbon nitride, which couples the photocatalytic reaction with the Fenton reaction, is introduced to demonstrate its Rhodamine B (RhB) degradation and antibacterial properties. Under visible-light irradiation, the degradation rate of RhB was 99.9% after 200 min, while the antibacterial rates of Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli), and Staphylococcus aureus (S. aureus) after 300 min were 99.9986%, 99.9974%, and 99.9876%, respectively. Moreover, the repetitive experiments of RhB degradation demonstrate that the proposed photocatalysts have excellent stability and reusability. The active free radical trapping experiments reveal that the superoxide radical (·O2−) is the dominant reactive oxygen species. In addition, the Fenton reaction is introduced into the photocatalytic system due to the doping of Fe3+, and the hydroxyl radical (·OH) produced from the Fenton reaction further enhances the photocatalytic performance. The remarkable improvement in photocatalytic performance of the proposed photocatalyst can be attributed to its broader UV–visible absorption characteristic and the occurrence of the Fenton reaction.
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Affiliation(s)
- Ying Gao
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jizhou Duan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Correspondence: (J.D.); (X.Z.)
| | - Xiaofan Zhai
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Correspondence: (J.D.); (X.Z.)
| | - Fang Guan
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiutong Wang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Jie Zhang
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
| | - Baorong Hou
- Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (Y.G.); (F.G.); (X.W.); (J.Z.); (B.H.)
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
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Xue J, Fujitsuka M, Majima T. Shallow trap state-enhanced photocatalytic hydrogen evolution over thermal-decomposed polymeric carbon nitride. Chem Commun (Camb) 2020; 56:5921-5924. [PMID: 32342976 DOI: 10.1039/d0cc01870h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the photogenerated electron kinetics of a thermal-decomposed polymeric carbon nitride (TCN) synthesized in air using femtosecond time-resolved diffuse reflectance spectroscopy. We find that the oxygen functional groups in TCN contribute to the formation of reactive shallow trap states for photogenerated electrons, leading to an enhanced activity for photocatalytic hydrogen evolution.
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Affiliation(s)
- Jiawei Xue
- The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
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Qian B, Yang X, Li X, Song Z. Fabrication of 1D/2D p-g-C3N4@RGO heterostructures with superior visible-light photoelectrochemical cathodic protection performance. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04660-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Metal free triad from red phosphorous, reduced graphene oxide and graphitic carbon nitride (red P-rGO-g-C3N4) as robust electro-catalysts for hydrogen evolution reaction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135851] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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20
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Li C, Zhang S, Ding Z, Zhou H, Wang G, Zhang H. Copper nanocrystals anchored on an O-rich carbonized corn gel for nitrogen electroreduction to ammonia. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00717j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Copper nanocrystals anchored on an O-rich carbonized corn gel for electrochemical N2 fixation to NH3 with a faradaic efficiency of 25.89% and an NH3 yield rate of 1514 μg h−1 mgCu−1 at −0.3 V versus an RHE in 0.1 M Na2SO4.
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Affiliation(s)
- Chang Li
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Shengbo Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Zhenhua Ding
- Anhui Institute of Product Quality Supervision and Inspection
- Hefei 230051
- China
| | - Hongjian Zhou
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Guozhong Wang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
| | - Haimin Zhang
- Key Laboratory of Materials Physics
- Centre for Environmental and Energy Nanomaterials
- Anhui Key Laboratory of Nanomaterials and Nanotechnology
- CAS Center for Excellence in Nanoscience
- Institute of Solid State Physics
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21
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Lee C, Kim SK, Chang H, Jang HD. Active electrode materials of graphene balls and their composites for supercapacitors: A perspective view. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.09.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Palladium Nanoparticles/Graphitic Carbon Nitride Nanosheets-Carbon Nanotubes as a Catalytic Amplification Platform for the Selective Determination of 17α-ethinylestradiol in Feedstuffs. Sci Rep 2019; 9:14162. [PMID: 31578339 PMCID: PMC6775042 DOI: 10.1038/s41598-019-50087-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 09/04/2019] [Indexed: 12/02/2022] Open
Abstract
A new kind of nanocomposite, graphitic carbon nitride (g-C3N4)-carbon nanotubes (CNTs), has been synthesized via solid grinding, and followed by thermal polymerization process of melamine and CNTs. Pd nanoparticles were loaded on the as-prepared nanocomposite by the self-assembly method. The Pd/g-C3N4-CNTs nanocomposite exhibited excellent electrocatalytic activity toward the oxidation of 17α-ethinylestradiol (EE2), and compared with other detection methods of EE2, such as HPLC, this detection platform does not need the samples for further purification processing. And this detection platform was compared with HPLC, there is no significant difference between two methods, and the accuracy and precision of the determination of EE2 in feedstuff sample by differential pulse voltammetry (DPV) to a satisfactory level. Thus, the Pd/g-C3N4-CNTs nanocomposite can be used as a signal amplification platform for the detection of EE2 in feedstuffs samples. Under the optimum condition, the current response increased linearly with EE2 concentration from 2.0 × 10−6 ~ 1.5 × 10−4 M with a detection limit of 5.0 × 10−7 M (S/N = 3) by DPV. The Pd/g-C3N4-CNTs showed good reproducibility and excellent anti-interference ability that the relative standard deviation was 3.3% (n = 5). This strategy may find widespread and promising applications in other sensing systems involving EE2.
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23
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Photocatalytic Dye and Cr (VI) Degradation Using a Metal-Free Polymeric g-C₃N₄ Synthesized from Solvent-Treated Urea. Polymers (Basel) 2019; 11:polym11010182. [PMID: 30960165 PMCID: PMC6401860 DOI: 10.3390/polym11010182] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 01/05/2019] [Accepted: 01/11/2019] [Indexed: 12/23/2022] Open
Abstract
The development of visible-light-driven polymeric g-C₃N₄ is in response to an emerging demand for the photocatalytic dye degradation and reduction of hexavalent chromium ions. We report the synthesis of g-C₃N₄ from urea treated with various solvents such as methanol, ethanol, and ethylene glycol. The samples were characterized and the Williamson⁻Hall method was applied to investigate the lattice strain of the samples. The activity of the samples was evaluated by observing the degradation of methyl orange and K₂Cr₂O₇ solution under light irradiation. Photocatalytic reaction kinetics were determined as pseudo-first-order and zero-order for the degradation of methyl orange and reduction of hexavalent chromium, respectively. Due to the inhibited charge separation resulting from the small lattice strain, reduced crystal imperfection, and sheet-like structure, g-C₃N₄ obtained from ethanol-treated urea exhibited the highest activity among the evaluated samples.
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24
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Zhang C, Li Y, Shuai D, Shen Y, Xiong W, Wang L. Graphitic carbon nitride (g-C 3N 4)-based photocatalysts for water disinfection and microbial control: A review. CHEMOSPHERE 2019; 214:462-479. [PMID: 30273880 DOI: 10.1016/j.chemosphere.2018.09.137] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/14/2018] [Accepted: 09/22/2018] [Indexed: 05/14/2023]
Abstract
Microbial contamination in drinking water is of great concern around the world because of high pathogenic risks to humans. Semiconductor photocatalysis has aroused an increasing interest as a promising environmental remediation technology for water disinfection and microbial control. Among various photocatalysts, graphitic carbon nitride (g-C3N4), as a fascinating two-dimensional conjugated polymer consisting of low-cost, earth-abundant elements, has drawn broad attention as a robust, metal-free, and visible-light-active material in the fields of both environmental remediation and solar energy conversion. Photocatalytic applications of g-C3N4-based nanomaterials for water splitting, hydrogen production, carbon dioxide reduction, and pollutant degradation have been extensively investigated and systematically reviewed. In contrast, their antimicrobial properties have been explored more recently due to the complex structure and unique metabolism of living microorganisms compared with chemicals. The corresponding rapidly increasing research efforts in the last five years have inspired us to conduct the review. This review is the first to comprehensively summarize the progress in design and antimicrobial performance of g-C3N4-based photocatalysts for water disinfection and microbial control, involving not only bacteria but also viruses and microalgae. Moreover, the underlying inactivation mechanisms of photocatalysts for microorganisms are evaluated to provide further understanding of g-C3N4-based advanced disinfection processes. In addition, some exciting future opportunities and challenges at the forefront of this research platform are pointed out. It is expected that this review can pave a new avenue for the development of a facile, cost-effective, environmental-friendly, and sustainable disinfection alternative.
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Affiliation(s)
- Chi Zhang
- Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xikang Road #1, Nanjing, 210098, PR China
| | - Yi Li
- Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xikang Road #1, Nanjing, 210098, PR China.
| | - Danmeng Shuai
- Department of Civil and Environmental Engineering, The George Washington University, 800 22nd St NW Suite 3530, Washington, DC, 20052, USA
| | - Yun Shen
- Department of Civil & Environmental Engineering, The University of Michigan, 1351 Beal Avenue, Ann Arbor, MI, 48109-2125, USA
| | - Wei Xiong
- Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xikang Road #1, Nanjing, 210098, PR China
| | - Linqiong Wang
- Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Xikang Road #1, Nanjing, 210098, PR China
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25
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Qu L, Zhu G, Ji J, Yadav TP, Chen Y, Yang G, Xu H, Li H. Recyclable Visible Light-Driven O-g-C 3N 4/Graphene Oxide/N-Carbon Nanotube Membrane for Efficient Removal of Organic Pollutants. ACS APPLIED MATERIALS & INTERFACES 2018; 10:42427-42435. [PMID: 30444339 DOI: 10.1021/acsami.8b15905] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Organic pollutants are harmful to human health, which creates a global need for the development of novel and effective materials for efficiently removing contaminants. Accordingly, an efficient visible light-driven heterostructured membrane combined with oxygen-modified monolayer g-C3N4, graphene oxide, and nitrogen-doped carbon nanotubes (CNTs) (O-g-C3N4/GO/N-CNT) was successfully fabricated through electrostatic interactions and subsequent vacuum filtration. The results suggested that the O-g-C3N4/GO/N-CNT membrane exhibited higher degradation rate than those of O-g-C3N4/GO and pure O-g-C3N4 under visible light exposure. This enhanced photocatalytic performance was attributed to the introduction of GO and N-CNT, which acted as electronic acceptors for monolayer O-g-C3N4 that effectively inhibited recombination of photogenerated electron-hole pairs, thus enhancing visible light photocatalytic activity. Furthermore, the enrichment and degradation rates of O-g-C3N4/GO/N-CNT membranes were demonstrated for tetracycline hydrochloride, which were found to be 96.64 and 94.30%, respectively, and no distinct enrichment or catalytic activity reduction was observed when their reusability was measured. These results suggested that these recyclable O-g-C3N4/GO/N-CNT membranes provide a new strategy for the highly efficient removal of environmental pollutants.
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Affiliation(s)
- Lulu Qu
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Gen Zhu
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Jie Ji
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - T P Yadav
- Department of Physics, Institute of Science , Banaras Hindu University , Varanasi 221005 , India
| | - Yijiang Chen
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Guohai Yang
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
| | - Hui Xu
- Institute for Energy Research, School of the Environment and Safety Engineering , Jiangsu University , Zhenjiang 212013 , China
| | - Haitao Li
- School of Chemistry and Materials Science , Jiangsu Normal University , Xuzhou 221116 , China
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26
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Yang L, Liu Y, Zhang R, Li W, Li P, Wang X, Zhou Y. Enhanced visible-light photocatalytic performance of a monolithic tungsten oxide/graphene oxide aerogel for nitric oxide oxidation. CHINESE JOURNAL OF CATALYSIS 2018. [DOI: 10.1016/s1872-2067(17)62974-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Stolarczyk JK, Bhattacharyya S, Polavarapu L, Feldmann J. Challenges and Prospects in Solar Water Splitting and CO2 Reduction with Inorganic and Hybrid Nanostructures. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00791] [Citation(s) in RCA: 285] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jacek K. Stolarczyk
- Photonics and Optoelectronics Group, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Amalienstraße 54, 80799 Munich, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 Munich, Germany
| | - Santanu Bhattacharyya
- Photonics and Optoelectronics Group, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Amalienstraße 54, 80799 Munich, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 Munich, Germany
| | - Lakshminarayana Polavarapu
- Photonics and Optoelectronics Group, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Amalienstraße 54, 80799 Munich, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 Munich, Germany
| | - Jochen Feldmann
- Photonics and Optoelectronics Group, Department of Physics and Center for Nanoscience (CeNS), Ludwig-Maximilians-Universität München, Amalienstraße 54, 80799 Munich, Germany
- Nanosystems Initiative Munich (NIM), Schellingstr. 4, 80799 Munich, Germany
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28
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Sin JC, Lam SM. One-dimensional ZnO nanorods doped with neodymium for enhanced resorcinol degradation under sunlight irradiation. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2017.1387855] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jin-Chung Sin
- Department of Petrochemical Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
| | - Sze-Mun Lam
- Department of Environmental Engineering, Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
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29
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Iqbal W, Yang B, Zhao X, Rauf M, Waqas M, Gong Y, Zhang J, Mao Y. Controllable synthesis of graphitic carbon nitride nanomaterials for solar energy conversion and environmental remediation: the road travelled and the way forward. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01061g] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review discusses advances in the synthesis and design of g-C3N4-based nanomaterials and their various photocatalytic and photoredox applications.
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Affiliation(s)
- Waheed Iqbal
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Bo Yang
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Xu Zhao
- Key Laboratory of Drinking Water Science and Technology
- Research Centre for Eco-Environmental Sciences
- Chinese Academy of Sciences
- Beijing 100085
- China
| | - Muhammad Rauf
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Muhammad Waqas
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Yan Gong
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
| | - Jinlong Zhang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yanping Mao
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
- Shenzhen Key Laboratory of Environmental Chemistry and Ecological Remediation
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30
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Construction of Z-scheme Ag 3 PO 4 /Bi 2 WO 6 composite with excellent visible-light photodegradation activity for removal of organic contaminants. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62942-5] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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31
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The flexible SiC nanowire paper electrode as highly efficient photocathodes for photoelectrocatalytic water splitting. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.10.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Li W, Lin Z, Yang G. A 2D self-assembled MoS 2/ZnIn 2S 4 heterostructure for efficient photocatalytic hydrogen evolution. NANOSCALE 2017; 9:18290-18298. [PMID: 29140396 DOI: 10.1039/c7nr06755k] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Semiconductor photocatalysis for hydrogen production is a promising route to address current energy demands. It is still a great challenge to spatially separate photogenerated electrons and holes in bulk photocatalysts because of the long carrier transport pathway from the bulk to the surface. 2D heterostructured photocatalysts with the type II band alignment can not only shorten the carrier transport pathway, but also create an electric field at the interface to suppress the carrier recombination. However, ultrathin and intimate-contact 2D heterostructured photocatalysts have rarely been achieved so far. Herein, we reported that ZnIn2S4 nanosheets were self-assembled on few-layer MoS2 nanosheets to fabricate ultrathin and intimate-contact 2D heterostructured photocatalysts. This 2D heterostructure was formed thanks to the strong electrostatic adsorption between MoS2 and ZnIn2S4. Under visible light irradiation, the H2 evolution rate of 2D MoS2/ZnIn2S4 heterostructured photocatalysts can reach 8898 μmol g-1 h-1, which is almost 16 times higher than that of the pure ZnIn2S4 photocatalysts. The dramatically enhanced photocatalytic performance was ascribed to the better charge separation and the accelerated surface reaction due to the heterostructure and more active sites provided by MoS2. These results provided a new insight for the design and development of 2D heterostructured photocatalysts.
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Affiliation(s)
- Weijia Li
- State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, School of Physics, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China.
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33
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Zhao Z, Ge G, Zhang D. Heteroatom-Doped Carbonaceous Photocatalysts for Solar Fuel Production and Environmental Remediation. ChemCatChem 2017. [DOI: 10.1002/cctc.201700707] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhongkui Zhao
- State Key Laboratory of Fine Chemicals; Department of Catalysis Chemistry and Engineering; Dalian University of Technology; 2 Linggong Road Dalian 116024 P.R. China
| | - Guifang Ge
- State Key Laboratory of Fine Chemicals; Department of Catalysis Chemistry and Engineering; Dalian University of Technology; 2 Linggong Road Dalian 116024 P.R. China
| | - Di Zhang
- State Key Laboratory of Fine Chemicals; Department of Catalysis Chemistry and Engineering; Dalian University of Technology; 2 Linggong Road Dalian 116024 P.R. China
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34
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Din MI, Najeeb J, Ahmad G. Recent Advancements in the Architecting Schemes of Zinc Oxide-Based Photocatalytic Assemblies. SEPARATION & PURIFICATION REVIEWS 2017. [DOI: 10.1080/15422119.2017.1383918] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | - Jawayria Najeeb
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
| | - Ghazia Ahmad
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
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35
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Chen A, Liu R, Peng X, Chen Q, Wu J. 2D Hybrid Nanomaterials for Selective Detection of NO 2 and SO 2 Using "Light On and Off" Strategy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:37191-37200. [PMID: 28910069 DOI: 10.1021/acsami.7b11244] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In order to distinguish NO2 and SO2 gas with one sensor, we designed a paper chip assembled with a 2D g-C3N4/rGO stacking hybrid fabricated via a layer-by-layer self-assembly approach. The g-C3N4/rGO hybrid exhibited a remarkable photoelectric property due to the construction of a van der Waals heterostructure. For the first time, we have been able to selectively detect NO2 and SO2 gas using a "light on and off" strategy. Under the "light off" condition, the g-C3N4/rGO sensor exhibited a p-type semiconducting behavior with a low detection limit of 100 ppb of NO2, but with no response toward SO2. In contrast, the sensor showed n-type semiconducting behavior which could detect SO2 at concentration as low as 2 ppm under UV light irradiation. The effective electron transfer among the 2D structure of g-C3N4 and rGO nanosheets as well as highly porous structures could play an important role in gas sensing. The different sensing mechanisms at "light on and off" circumstances were also investigated in detail.
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Affiliation(s)
- Aimin Chen
- College of Chemical Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Rui Liu
- College of Chemical Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Xiao Peng
- College of Chemical Engineering, Zhejiang University of Technology , Hangzhou 310014, China
| | - Qiaofen Chen
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
| | - Jianmin Wu
- Institute of Microanalytical System, Department of Chemistry, Zhejiang University , Hangzhou 310058, China
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36
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Yang H, Zhang S, Cao R, Deng X, Li Z, Xu X. Constructing the novel ultrafine amorphous iron oxyhydroxide/g-C 3N 4 nanosheets heterojunctions for highly improved photocatalytic performance. Sci Rep 2017; 7:8686. [PMID: 28819141 PMCID: PMC5561240 DOI: 10.1038/s41598-017-09283-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 07/18/2017] [Indexed: 01/23/2023] Open
Abstract
Ultrafine particles, more heterojunction interfaces and amorphous materials can effectively enhance the photocatalytic activity of photocatalysts. In this work, a facile in-situ precipitation method was developed to prepare ultrafine amorphous iron oxyhydroxide/ultrathin g-C3N4 nanosheets heterojunction composites. The amorphous iron oxyhydroxide possessed an ultrafine particle size and a wide range of visible light absorption. In this process, the ultrafine particles not only shortened the diffusion distance of photogenerated carriers, but also facilitated the formation of more heterojunctions with ultrathin g-C3N4 nanosheets. The photocatalytic activities were evaluated using rhodamine B, methylene blue, and methyl orange as pollution models under visible light irradiation. Notably, the optimal photocatalytic activity of a-FeOOH/CNNS-800 composite is ~17.8 times higher than that of CNNS towards the degradation of rhodamine B under visible light. The outstanding photocatalytic activities were ascribed to the narrower band gap, the enhanced visible light absorbance, abundant heterojunction interfaces, and the effective separation of the photogenerated charges driven by the matched band edge in the heterostructures. We trusted that the facile and easy-to-extend synthesis method can be further expanded to synthesize other ultrafine semiconductors coupled with g-C3N4 for enhancing the photocatalytic activities.
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Affiliation(s)
- Hongcen Yang
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China
| | - Shouwei Zhang
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China.
| | - Ruya Cao
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China
| | - Xiaolong Deng
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China
| | - Zhipeng Li
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China
| | - Xijin Xu
- School of Physics and Technology, University of Jinan, Shandong, 250022, PR China.
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37
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Anandan S, Wu JJ, Bahnemann D, Emeline A, Ashokkumar M. Crumpled Cu 2 O-g-C 3 N 4 nanosheets for hydrogen evolution catalysis. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Wang A, Wang C, Fu L, Wong-Ng W, Lan Y. Recent Advances of Graphitic Carbon Nitride-Based Structures and Applications in Catalyst, Sensing, Imaging, and LEDs. NANO-MICRO LETTERS 2017; 9:47. [PMID: 30393742 PMCID: PMC6199047 DOI: 10.1007/s40820-017-0148-2] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 05/15/2017] [Indexed: 05/06/2023]
Abstract
The graphitic carbon nitride (g-C3N4) which is a two-dimensional conjugated polymer has drawn broad interdisciplinary attention as a low-cost, metal-free, and visible-light-responsive photocatalyst in the area of environmental remediation. The g-C3N4-based materials have excellent electronic band structures, electron-rich properties, basic surface functionalities, high physicochemical stabilities and are "earth-abundant." This review summarizes the latest progress related to the design and construction of g-C3N4-based materials and their applications including catalysis, sensing, imaging, and white-light-emitting diodes. An outlook on possible further developments in g-C3N4-based research for emerging properties and applications is also included.
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Affiliation(s)
- Aiwu Wang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 People’s Republic of China
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR People’s Republic of China
| | - Chundong Wang
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 People’s Republic of China
| | - Li Fu
- College of Materials and Environmental Engineering, Hangzhou Dianzi Univerisity, Hangzhou, 310018 People’s Republic of China
| | - Winnie Wong-Ng
- Materials Science Measurement Division, National Institute of Standards and Technology, Gaitherburg, MD 20899 USA
| | - Yucheng Lan
- Department of Physics and Engineering, Morgan State University, Baltimore, MD 21251 USA
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39
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Efficient Organic Dyes Photodegradation Catalyzed by Nickel-Species Loaded Graphitic Carbon Nitride. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0564-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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40
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Shiravand G, Badiei A, Mohammadi Ziarani G. Carboxyl-rich g-C3N4 nanoparticles: Synthesis, characterization and their application for selective fluorescence sensing of Hg2+ and Fe3+ in aqueous media. SENSORS AND ACTUATORS B: CHEMICAL 2017; 242:244-252. [DOI: 10.1016/j.snb.2016.11.038] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
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41
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Hao J, Wang Q, Zhao Z. Synthesis and characterization of g-C3N4/BiNbO4 composite materials with visible light photocatalytic activity. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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42
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Lei J, Liu F, Wang L, Liu Y, Zhang J. A binary polymer composite of graphitic carbon nitride and poly(diphenylbutadiyne) with enhanced visible light photocatalytic activity. RSC Adv 2017. [DOI: 10.1039/c7ra03534a] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A polymer composite consisting of g-C3N4 and PDPB with efficient and stable photocatalytic performance for degradation of organic pollutants has been developed.
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Affiliation(s)
- Juying Lei
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Fenghui Liu
- Key Lab for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry and Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Lingzhi Wang
- Key Lab for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry and Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Yongdi Liu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Jinlong Zhang
- Key Lab for Advanced Materials
- Institute of Fine Chemicals
- School of Chemistry and Chemical Engineering
- East China University of Science and Technology
- Shanghai 200237
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43
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Zhang Z, Lin S, Li X, Li H, Cui W. Metal free and efficient photoelectrocatalytic removal of organic contaminants over g-C3N4 nanosheet films decorated with carbon quantum dots. RSC Adv 2017. [DOI: 10.1039/c7ra11205j] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
As a typical metal-free semiconductor photocatalyst, a composite photocatalyst comprised of g-C3N4 nanosheets decorated with carbon quantum dots (CQDs/g-C3N4) was synthesized via a simple ultrasonic dispersion self-assembly method.
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Affiliation(s)
- Zisheng Zhang
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
- Department of Chemical & Biological Engineering
| | - Shuanglong Lin
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Xingang Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
- National Engineering Research Center of Distillation Technology
| | - Hong Li
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin
- PR China
| | - Wenquan Cui
- College of Chemical Engineering
- North China University of Science and Technology
- Tangshan
- PR China
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44
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Meng J, Pei J, He Z, Wu S, Lin Q, Wei X, Li J, Zhang Z. Facile synthesis of g-C3N4 nanosheets loaded with WO3 nanoparticles with enhanced photocatalytic performance under visible light irradiation. RSC Adv 2017. [DOI: 10.1039/c7ra02297b] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Possible synthesis and degradation mechanism for photocatalysts under visible light irradiation.
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Affiliation(s)
- Jie Meng
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Jingyuan Pei
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Zefang He
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Shiyan Wu
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Qingyun Lin
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Xiao Wei
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Jixue Li
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
| | - Ze Zhang
- Center of Electron Microscopy
- State Key Laboratory of Silicon Materials
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
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45
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Yang Y, Chen J, Mao Z, An N, Wang D, Fahlman BD. Ultrathin g-C3N4 nanosheets with an extended visible-light-responsive range for significant enhancement of photocatalysis. RSC Adv 2017. [DOI: 10.1039/c6ra26172h] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultrathin graphitic carbon nitride (UGCN) nanosheets with an extended region of visible light response and enhanced surface area were constructed for a significant enhancement in photocatalysis.
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Affiliation(s)
- Yanfang Yang
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Jingjing Chen
- Tianjin Key Laboratory for Photoelectric Materials and Devices
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Zhiyong Mao
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Na An
- Tianjin Key Laboratory for Photoelectric Materials and Devices
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Dajian Wang
- Tianjin Key Laboratory for Photoelectric Materials and Devices
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Bradley D. Fahlman
- Department of Chemistry & Biochemistry and Science of Advanced Materials Program
- Central Michigan University
- Mount Pleasant
- USA 48859
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46
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Yang X, Li C, Huang J, Liu Y, Chen W, Shen J, Zhu Y, Li C. Nitrogen-doped Fe3C@C particles as an efficient heterogeneous photo-assisted Fenton catalyst. RSC Adv 2017. [DOI: 10.1039/c7ra00486a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The oxygen in Fe3O4 nanoparticles was replaced by carbon and nitrogen from the graphitic carbon nitride fragments released from dicyandiamide condensation.
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Affiliation(s)
- Xiaoling Yang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Chengjia Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jianfei Huang
- Department of Chemistry and Biochemistry
- University of California, Santa Barbara
- Santa Barbara 93106
- USA
| | - Yanyan Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Wei Chen
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Jianhua Shen
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Yihua Zhu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Chunzhong Li
- Key Laboratory for Ultrafine Materials of Ministry of Education
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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47
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Patnaik S, Sahoo DP, Parida K. Nanocomposites of g-C3N4 with Carbonaceous π-conjugated/Polymeric Materials Towards Visible Light-Induced Photocatalysts. NANOCOMPOSITES FOR VISIBLE LIGHT-INDUCED PHOTOCATALYSIS 2017. [DOI: 10.1007/978-3-319-62446-4_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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48
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Li X, Yu J, Wageh S, Al-Ghamdi AA, Xie J. Graphene in Photocatalysis: A Review. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6640-6696. [PMID: 27805773 DOI: 10.1002/smll.201600382] [Citation(s) in RCA: 327] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 08/09/2016] [Indexed: 05/22/2023]
Abstract
In recent years, heterogeneous photocatalysis has received much research interest because of its powerful potential applications in tackling many important energy and environmental challenges at a global level in an economically sustainable manner. Due to their unique optical, electrical, and physicochemical properties, various 2D graphene nanosheets-supported semiconductor composite photocatalysts have been widely constructed and applied in different photocatalytic fields. In this review, fundamental mechanisms of heterogeneous photocatalysis, including thermodynamic and kinetics requirements, are first systematically summarized. Then, the photocatalysis-related properties of graphene and its derivatives, and design rules and synthesis methods of graphene-based composites are highlighted. Importantly, different design strategies, including doping and sensitization of semiconductors by graphene, improving electrical conductivity of graphene, increasing eloectrocatalytic active sites on graphene, strengthening interface coupling between semiconductors and graphene, fabricating micro/nano architectures, constructing multi-junction nanocomposites, enhancing photostability of semiconductors, and utilizing the synergistic effect of various modification strategies, are thoroughly summarized. The important applications including photocatalytic pollutant degradation, H2 production, and CO2 reduction are also addressed. Through reviewing the significant advances on this topic, it may provide new opportunities for designing highly efficient 2D graphene-based photocatalysts for various applications in photocatalysis and other fields, such as solar cells, thermal catalysis, separation, and purification.
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Affiliation(s)
- Xin Li
- College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, P. R. China
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - S Wageh
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Ahmed A Al-Ghamdi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Jun Xie
- Key Laboratory of Energy Plants Resource and Utilization, Ministry of Agriculture, Institute of New Energy and New Materials, South China Agricultural University, Guangzhou, 510642, P. R. China
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49
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Chen J, Xu X, Li T, Pandiselvi K, Wang J. Toward High Performance 2D/2D Hybrid Photocatalyst by Electrostatic Assembly of Rationally Modified Carbon Nitride on Reduced Graphene Oxide. Sci Rep 2016; 6:37318. [PMID: 27853309 PMCID: PMC5112518 DOI: 10.1038/srep37318] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 10/27/2016] [Indexed: 02/06/2023] Open
Abstract
Efficient metal-free visible photocatalysts with high stability are highly desired for sufficient utilization of solar energy. In this work, the popular carbon nitride (CN) photocatalyst is rationally modified by acid exfoliation of molecular grafted CN, achieving improved visible-light utilization and charge carriers mobility. Moreover, the modification process tuned the surface electrical property of CN, which enabled it to be readily coupled with the oppositely charged graphene oxide during the following photo-assisted electrostatic assembly. Detailed characterizations indicate the formation of well-contacted 2D/2D heterostructure with strong interfacial interaction between the modified CN nanosheets (CNX-NSs) and reduced graphene oxide (RGO). The optimized hybrid (with a RGO ratio of 20%) exhibits the best photocatalytic performance toward MB degradation, which is almost 12.5 and 7.0 times of CN under full spectrum and visible-light irradiation, respectively. In addition, the hybrid exhibits high stability after five successive cycles with no obvious change in efficiency. Unlike pure CNX-NSs, the dye decomposition mostly depends on the H2O2 generation by a two-electron process due to the electron reservoir property of RGO. Thus the enhancement in photocatalytic activity could be ascribed to the improved light utilization and increased charge transfer ability across the interface of CNX-NSs/RGO heterostructure.
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Affiliation(s)
- Jian Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaochan Xu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Tao Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Kannusamy Pandiselvi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jingyu Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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One-pot hydrothermal synthesis of SrTiO3-reduced graphene oxide composites with enhanced photocatalytic activity for hydrogen production. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.05.025] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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