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Feng S, Liu L, Lin J, Wang Z, Gu J, Zhang L, Zhang B, Sun S. Bio-inspired synthesis of N-doped TiO 2/C nanocrystals using jellyfish mucus with high visible-light photocatalytic efficiency. NANOSCALE ADVANCES 2024; 6:3759-3774. [PMID: 39050958 PMCID: PMC11265576 DOI: 10.1039/d4na00309h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Accepted: 06/19/2024] [Indexed: 07/27/2024]
Abstract
Non-metal doping of titanium dioxide (TiO2) has been widely investigated, because it can facilely improve the optical response of TiO2 under visible light excitation in environmental pollution treatments. In the ongoing efforts, however, little consideration has been given to the use of harmful marine organisms as dopants. Here, we employed the natural mucus proteins of the large harmful jellyfish Aurelia coerulea and Nemopilema nomurai, which have frequently bloomed in East Asian marginal seas in recent decades, to synthesize mesoporous nitrogen-doped TiO2 nanocrystals modified with carbon (N-TiO2/C) by a simple hydrothermal method. These nanocrystals were composed of predominantly anatase phase and a small amount of brookite phase TiO2. Their mesoporous structures changed with the variation of the volume ratio of jellyfish mucus added to tetrabutyl titanate (TBT). At the same ratio, larger surface area and pore volume but smaller pore size were observed in N-TiO2/C nanocrystals from N. nomurai rather than A. coerulea. Nitrogen was determinately doped into the lattice of the prepared nanocrystals and the carbon species were modified on their surfaces, which narrowed the band gap, facilitated the separation of photogenerated electron-hole pairs and favored the absorption of visible light, thus improving their visible light photocatalytic activity. The photocatalytic degradation efficiency of Rhodamine B (RhB) under visible light irradiation first increased and then decreased with the gradual increase of the volume ratio of jellyfish mucus proteins to TBT. The maximum reached 97.52% in 20 min from N-TiO2/C nanocrystals synthesized using N. nomurai mucus at the volume ratio of 4 : 1, which showed a remarkably strong visible light absorption, lower band gap energy and smaller electron transfer resistance. These N-TiO2/C nanocrystals also had a relatively stable crystal structure in multiple degradation reactions. The main active species including superoxide radicals (˙O2 -), photogenerated holes (h+) and hydroxyl radicals (˙OH) were found to play a major role in the degradation process of RhB. This study highlights the potential high-value reapplication of harmful jellyfish mucus as a natural organic matrix in fabricating advanced materials with optimized functional properties.
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Affiliation(s)
- Song Feng
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences Qingdao 266071 China
- College of Marine Sciences, University of Chinese Academy of Sciences Qingdao 266400 China
| | - Lingchen Liu
- School of Architecture and Civil Engineering, Xihua University Chengdu 610039 China
- Bureau of Natural Resources of Daan District Zigong 643000 China
| | - Jianing Lin
- Institute of Eco-Environmental Forensics, Shandong University Qingdao 266237 China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center Qingdao 266237 China
| | - Ziwei Wang
- Liaoning University Shenyang 110036 China
| | - Jinzeng Gu
- Institute of Eco-Environmental Forensics, Shandong University Qingdao 266237 China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center Qingdao 266237 China
| | - Lutao Zhang
- Institute of Eco-Environmental Forensics, Shandong University Qingdao 266237 China
- Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center Qingdao 266237 China
| | - Bin Zhang
- School of Architecture and Civil Engineering, Xihua University Chengdu 610039 China
| | - Song Sun
- CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences Qingdao 266071 China
- College of Marine Sciences, University of Chinese Academy of Sciences Qingdao 266400 China
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Xu J, Zhang J, Tao F, Liang P, Zhang P. Kilogram-scale fabrication of TiO 2 nanoparticles modified with carbon dots with enhanced visible-light photocatalytic activity. NANOSCALE ADVANCES 2023; 5:2226-2237. [PMID: 37056612 PMCID: PMC10089113 DOI: 10.1039/d2na00886f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Incorrect discharge of dye wastewater will cause environment pollution and be very harmful to human health. Visible-light photocatalysis over large-scale synthesized semiconductor materials can become one of the feasible solutions for the practical application of purifying dye wastewater. As a new candidate, carbon dots (CDs) with unique fluorescence were fabricated on a tens of grams scale and then further applied to the kilogram-scale synthesis of a CDs/TiO2 composite by one-step heat treatment. Compared with single TiO2 nanoparticles (NPs), the CDs/TiO2 composite with a large specific surface area exhibits enhanced photo-degradation performance for methyl orange (MO). This phenomenon can be attributed to the loading of CDs in the TiO2 NPs, which is conducive to broadening the light absorption spectrum and improving absorption intensity, narrowing the band gap, charge carrier trapping, up-converting properties, and charge separation. The kilogram-scale synthesis of the CDs/TiO2 photocatalyst does not affect the morphology, structure, optical properties and photocatalytic performance of the composite, which opens up a new avenue to construct elaborate heterostructures for enhanced photocatalytic performance using visible light as the light source.
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Affiliation(s)
- Jingjing Xu
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Jiayan Zhang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Feifei Tao
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
- Shanghai Advanced Research Institute, Chinese Academy of Sciences Shanghai 201210 P. R. China
| | - Pengfei Liang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
| | - Pingan Zhang
- Department of Chemistry and Chemical Engineering, Shaoxing University Zhejiang 312000 P. R. China
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Kim YE, Byun MY, Lee KY, Lee MS. Hydrothermal synthesis of mesoporous TiO2 using β-diketonate stabilizing agents for photocatalytic degradation of methyl violet 2B under visible light. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Leonard DK, Ryabchuk P, Anwar M, Dastgir S, Junge K, Beller M. A Convenient and Stable Heterogeneous Nickel Catalyst for Hydrodehalogenation of Aryl Halides Using Molecular Hydrogen. CHEMSUSCHEM 2022; 15:e202102315. [PMID: 34978382 PMCID: PMC9306955 DOI: 10.1002/cssc.202102315] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Hydrodehalogenation is an effective strategy for transforming persistent and potentially toxic organohalides into their more benign congeners. Common methods utilize Pd/C or Raney-nickel as catalysts, which are either expensive or have safety concerns. In this study, a nickel-based catalyst supported on titania (Ni-phen@TiO2 -800) is used as a safe alternative to pyrophoric Raney-nickel. The catalyst is prepared in a straightforward fashion by deposition of nickel(II)/1,10-phenanthroline on titania, followed by pyrolysis. The catalytic material, which was characterized by SEM, TEM, XRD, and XPS, consists of nickel nanoparticles covered with N-doped carbon layers. By using design of experiments (DoE), this nanostructured catalyst is found to be proficient for the facile and selective hydrodehalogenation of a diverse range of substrates bearing C-I, C-Br, or C-Cl bonds (>30 examples). The practicality of this catalyst system is demonstrated by the dehalogenation of environmentally hazardous and polyhalogenated substrates atrazine, tetrabromobisphenol A, tetrachlorobenzene, and a polybrominated diphenyl ether (PBDE).
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Affiliation(s)
- David K. Leonard
- Leibniz-Institut für Katalyse e.V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Pavel Ryabchuk
- Leibniz-Institut für Katalyse e.V.Albert-Einstein-Straße 29a18059RostockGermany
- Galapagos NVGeneraal De Wittelaan L11 A32800MechelenBelgium
| | - Muhammad Anwar
- Qatar Environment and Energy Research Institute (QEERI)Hamad Bin Khalifa University (HBKU)P.O. Box: 34110, Qatar Foundation, Education CityDohaQatar
| | - Sarim Dastgir
- Qatar Environment and Energy Research Institute (QEERI)Hamad Bin Khalifa University (HBKU)P.O. Box: 34110, Qatar Foundation, Education CityDohaQatar
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e.V.Albert-Einstein-Straße 29a18059RostockGermany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V.Albert-Einstein-Straße 29a18059RostockGermany
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Abstract
This article presents an overview of the reports on the doping of TiO2 with carbon, nitrogen, and sulfur, including single, co-, and tri-doping. A comparison of the properties of the photocatalysts synthesized from various precursors of TiO2 and C, N, or S dopants is summarized. Selected methods of synthesis of the non-metal doped TiO2 are also described. Furthermore, the influence of the preparation conditions on the doping mode (interstitial or substitutional) with reference to various types of the modified TiO2 is summarized. The mechanisms of photocatalysis for the different modes of the non-metal doping are also discussed. Moreover, selected applications of the non-metal doped TiO2 photocatalysts are shown, including the removal of organic compounds from water/wastewater, air purification, production of hydrogen, lithium storage, inactivation of bacteria, or carbon dioxide reduction.
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Molloro LH, Tain S, Belachew N, Owusu KA, Zhao X. 3D mesoporous structure assembled from monoclinic M-phase VO 2 nanoflakes with enhanced thermochromic performance. RSC Adv 2021; 11:13556-13563. [PMID: 35423886 PMCID: PMC8697583 DOI: 10.1039/d1ra01558c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/06/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, 3D mesoporous structures assembled from monoclinic M-phase VO2 nanoflakes were successfully synthesized for enhanced thermochromic performance.
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Affiliation(s)
- Liboro Hundito Molloro
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
- Department of Chemistry
| | - Shouqin Tain
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
| | - Neway Belachew
- Department of Chemistry
- Debre Berhan University
- Debre Berhan
- Ethiopia
| | - Kwadwo Asare Owusu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures
- Wuhan University of Technology (WUT)
- Wuhan 430070
- P. R. China
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7
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Wang X, Wang K, Wang H, Wang Z, Chen X, Dai W, Fu X. H 2-oxidation driven by its behavior of losing an electron over B-doped TiO 2 under UV irradiation. Phys Chem Chem Phys 2021; 23:186-195. [PMID: 33319875 DOI: 10.1039/d0cp04039h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, TiO2 was modified by doping the electron-deficient B element, and then the gas-sensing response of B-TiO2 to H2 under UV irradiation at room temperature in a N2 atmosphere and the oxidation of H2 over B-TiO2 under corresponding conditions were tested. It was found that H2 would accept an electron when adsorbed on the TiO2 surface, while H2 would donate an electron when adsorbed on the B-TiO2 surface. Correspondingly, H2 could not be oxidized over TiO2, but could be oxidized over B-TiO2. This indicated that the oxidation of H2 was dependent on the electron-transfer behavior between H2 and the surface of TiO2 or B-TiO2. Based on the relevant characterization results, it was proposed that H2 could accept an electron from TiO2 due to the higher Fermi level of TiO2, while H2 could donate an electron to B-TiO2 due to the lower Fermi level of B-TiO2 induced by doping B. This indicated that the electron-transfer behavior between H2 and TiO2 could be changed by adjusting the Fermi level of TiO2, while the electron-transfer behavior would further affect the photocatalytic activity of oxidizing H2. This result shows that the doable H2 photocatalytic oxidation in thermodynamics can be controlled by a kinetics factor (H2 losing-an-electron behavior). This work can be applied to provide an understanding of the photocatalytic oxidation behavior of other reactants over semiconductor materials.
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Affiliation(s)
- Xiaoxiao Wang
- Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350108, China.
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8
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Liu Y, Huang J, Feng X, Li H. Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review. JOURNAL OF THERMAL SPRAY TECHNOLOGY 2020; 30:1-24. [PMID: 38624582 PMCID: PMC7640575 DOI: 10.1007/s11666-020-01118-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/05/2020] [Indexed: 05/03/2023]
Abstract
There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.
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Affiliation(s)
- Yi Liu
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
- Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
| | - Jing Huang
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
- Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
| | - Xiaohua Feng
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
- Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
| | - Hua Li
- Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
- Zhejiang Engineering Research Center for Biomedical Materials, Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201 China
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9
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Peng X, Wang M, Dai H, Qiu F, Hu F. In situ growth of carbon nitride on titanium dioxide/hemp stem biochar toward 2D heterostructured photocatalysts for highly photocatalytic activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:39198-39210. [PMID: 32638312 DOI: 10.1007/s11356-020-09381-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
In this work, hierarchical structure TiO2/hemp stem biochar carbon (HSBC) and C3N4-TiO2/HSBC were successfully fabricated, which were used as efficient visible-light photocatalyst degradation for ammonia nitrogen from aqueous solution. The as-prepared C3N4-TiO2/HSBC hybrid catalyst showed the higher efficient photocatalytic activity for decomposition of ammonia nitrogen than those of pure TiO2 and TiO2/HSBC, suggesting suppressed recombination of photogenerated charges and promoted mass transfer due to synergistic effect, and thus increased photocatalytic degradation activity. The degradation of ammonia follows a pseudo-first-order kinetics. All prepared catalysts demonstrated extremely photocatalytic efficiency under visible-light and UV light illumination; the ammonia nitrogen photocatalytic degradation activity of C3N4-TiO2/HSBC can reach 90.3% under UV light while the degradation activity achieved about 50.7% under visible-light irradiation. The results revealed that the h+ was dominantly active intermediates in the process of photocatalytic degradation. The prepared catalysts are promising for the degradation of ammonia nitrogen from water resource.
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Affiliation(s)
- Xiaoming Peng
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu Province, China
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, Jiangxi Province, China
| | - Min Wang
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, Jiangxi Province, China
| | - Hongling Dai
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, Jiangxi Province, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, Jiangsu Province, China
| | - Fengping Hu
- School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, Jiangxi Province, China.
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10
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Nasrollahzadeh M, Shafiei N, Nezafat Z, Sadat Soheili Bidgoli N, Soleimani F, Varma RS. Valorisation of Fruits, their Juices and Residues into Valuable (Nano)materials for Applications in Chemical Catalysis and Environment. CHEM REC 2020; 20:1338-1393. [PMID: 32990405 DOI: 10.1002/tcr.202000078] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/01/2020] [Indexed: 12/16/2022]
Abstract
One of the most abundant wastes from all around the world is nutrient resources. Among them, fruits, their extracts, and residues comprise a major portion, which contain many valuable components that get lost during disposal or become burden on the shrinking landfills. These concerns are addressed by seeking sustainable processing methods that would have a minimal environmental impact. The crops contain renewable chemicals which are useful for catalysis, wastewater treatment, or preparation of nanomaterials; there has been an upsurge for the industrial applications of (nano)materials as their environmental and catalytic appliances is a fascinating subject to design cheaper and safer catalytic systems. Due to the excellent chemical properties of the fruit extracts, they have garnered attention as cost-effective catalysts and support materials. This review focuses on the preparation of (nano)materials and their catalytic and environmental applications and highlights the potential appliances and industrial benefits derived from these low-cost renewable and sustainable greener sources thus essentially converting waste into wealth.
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Affiliation(s)
| | - Nasrin Shafiei
- Department of Chemistry, Faculty of Science, University of Qom, Qom, 37185-359, Iran
| | - Zahra Nezafat
- Department of Chemistry, Faculty of Science, University of Qom, Qom, 37185-359, Iran
| | | | - Fahimeh Soleimani
- Department of Chemistry, Faculty of Science, University of Qom, Qom, 37185-359, Iran
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, 783 71, Olomouc, Czech Republic
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11
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Burungale VV, Bae H, Kamble AS, Kim JH, Patil PS, Ha JS. Studies on interstitial carbon doping from a Ti precursor in a hierarchical TiO 2 nanostructured photoanode by a single step hydrothermal route. RSC Adv 2020; 10:28492-28500. [PMID: 35520089 PMCID: PMC9055801 DOI: 10.1039/d0ra04744a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 07/20/2020] [Indexed: 01/01/2023] Open
Abstract
Carbon doping from a Ti precursor in TiO2 synthesized by a hydrothermal method was studied. The structural, optical and morphological study of the deposited material was carried out using X-ray diffraction, UV-vis spectroscopy and scanning electron microscopy characterization techniques. The elemental composition of the TiO2 deposited with different precursor concentrations was studied using X-ray photoelectron spectroscopy and electron dispersive X-ray spectroscopy. The amount of elemental carbon in the TiO2 matrix is found to be increased as the Ti precursor concentration is increased, which strengthens the proposed idea of carbon doping via a Ti precursor. Interstitial carbon doping is possible directly from a Ti precursor (titanium(iv) isopropoxide) without using any other carbon source.![]()
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Affiliation(s)
- V V Burungale
- School of Chemical Engineering, Chonnam National University Gwangju 61186 Republic of Korea
| | - Hyojung Bae
- Optoelectronics Convergence Research Centre, Chonnam National University Gwangju 61186 Republic of Korea
| | - A S Kamble
- Department of Materials Science and Engineering, Chonnam National University Gwangju 500 757 Republic of Korea
| | - J-H Kim
- Department of Materials Science and Engineering, Chonnam National University Gwangju 500 757 Republic of Korea
| | - P S Patil
- Thin Film Materials Laboratory, Department of Physics, Shivaji University Kolhapur 416004 MS India
| | - J-S Ha
- School of Chemical Engineering, Chonnam National University Gwangju 61186 Republic of Korea .,Optoelectronics Convergence Research Centre, Chonnam National University Gwangju 61186 Republic of Korea
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12
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Chen S, Gao H, Han M, Chen X, Zhang X, Dong W, Wang G. In‐situ Self‐transformation Synthesis of N‐doped Carbon Coating Paragenetic Anatase/Rutile Heterostructure with Enhanced Photocatalytic CO
2
Reduction Activity. ChemCatChem 2020. [DOI: 10.1002/cctc.202000137] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Siyuan Chen
- Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory of Function Materials for Molecule & Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P.R. China
| | - Hongyi Gao
- Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory of Function Materials for Molecule & Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P.R. China
| | - Mengyi Han
- Institute of Advanced MaterialsBeijing Normal University Beijing 100875 P.R. China
| | - Xiao Chen
- Institute of Advanced MaterialsBeijing Normal University Beijing 100875 P.R. China
| | - Xiaowei Zhang
- Institute of Advanced MaterialsBeijing Normal University Beijing 100875 P.R. China
| | - Wenjun Dong
- Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory of Function Materials for Molecule & Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P.R. China
| | - Ge Wang
- Beijing Advanced Innovation Center for Materials Genome EngineeringBeijing Key Laboratory of Function Materials for Molecule & Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology Beijing Beijing 100083 P.R. China
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13
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Chang Y, Han W, Cui S, Cai A. Cellulose-inspired synthesis of hierarchically nanostructured TiO2 with high photocatalytic activity. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137249] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Chauhan A, Sharma M, Kumar S, Thirumalai S, Kumar RV, Vaish R. TiO 2@C core@shell nanocomposites: A single precursor synthesis of photocatalyst for efficient solar water treatment. JOURNAL OF HAZARDOUS MATERIALS 2020; 381:120883. [PMID: 31369935 DOI: 10.1016/j.jhazmat.2019.120883] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 07/08/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
This study reports the facile synthesis of highly photoactive TiO2@C core@shell nanocomposites through a single alkoxide precursor. TiO2 and carbon-based hybrid nanomaterials are popular photocatalysts owing to their abundance, low toxicity, and high stability, making them strong candidates for practical solar water-treatment applications. However, synthesis of such nanomaterials is often a multi-step process and requires careful control of the external carbon source for producing the desired morphology. In this regard, this study reports the synthesis of well-dispersed TiO2@C nanocomposites without the need of an external carbon source. The resulting photocatalyst was employed for treatment of various water-borne pollutants including several dyes, pharmaceuticals, and pathogens. Rapid mineralization of pollutants could be achieved even with low amounts of catalyst, with the performance well exceeding that of pristine TiO2 and P25 Degussa. Results indicate that incorporation of C increases visible-light absorption and greatly improves the separation of photogenerated charge carriers. Given the facile synthesis and the wide scope of operation, the proposed catalyst could be a significant step towards practical photocatalytic solar water-treatment.
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Affiliation(s)
- Aditya Chauhan
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Moolchand Sharma
- School of Engineering, Indian Institute of Technology Mandi, Mandi, 175 001, India
| | - Sandeep Kumar
- School of Engineering, Indian Institute of Technology Mandi, Mandi, 175 001, India
| | - Sundararajan Thirumalai
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | | | - Rahul Vaish
- School of Engineering, Indian Institute of Technology Mandi, Mandi, 175 001, India
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15
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Zeng Q, Xie X, Wang X, Lu G, Li H, Cheng Lee S, Sun J. New insights into the synergistic effect of active radicals and adsorptive ability on the photodegradation of gaseous acetaldehyde over reduced graphene Oxide/P25 composite. JOURNAL OF HAZARDOUS MATERIALS 2019; 380:120814. [PMID: 31325696 DOI: 10.1016/j.jhazmat.2019.120814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/12/2019] [Accepted: 06/22/2019] [Indexed: 06/10/2023]
Abstract
Although coupling reduced graphene oxide (RGO) with TiO2 is believed to enhance the photocatalysis through the light utilization, studies on its photothermal conversion effect are rarely reported. Herein, RGOP (reduced graphene oxide/P25) was synthesized to explore roles of the enhanced light adsorption and photothermal conversion in the photocatalytic process. It was found that although RGOP had increased absorbance, it actually possessed lower available light utilization compared with P25. In the synergistic effect of available light utilization, transfer resistance and hydrophilicity, RGOP exhibited less superoxide radicals but more hydroxyl radicals. In the presence of scavenger experiments, O2- was proved to play the predominant role in the photocatalytic process, while OH was the secondary one. In comparison to P25, the change of active radicals of RGOP was adverse to its photocatalysis. However, due to the superior adsorptive property of RGOP, it exhibited higher photocatalytic activity than P25. The improved photocatalytic activity of RGOP was ascribed to its superior adsorptive ability aside from active radicals (O2-, OH).
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Affiliation(s)
- Qinglong Zeng
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Xiaofeng Xie
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Xiao Wang
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Guanhong Lu
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Haiwei Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Shun Cheng Lee
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Jing Sun
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
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16
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de Dicastillo CL, Patiño C, Galotto MJ, Vásquez-Martínez Y, Torrent C, Alburquenque D, Pereira A, Escrig J. Novel hollow titanium dioxide nanospheres with antimicrobial activity against resistant bacteria. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2019; 10:1716-1725. [PMID: 31501743 PMCID: PMC6720579 DOI: 10.3762/bjnano.10.167] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 07/30/2019] [Indexed: 05/19/2023]
Abstract
The search for and synthesis of new antimicrobial nanostructures is important to reduce microbial incidence that induces infectious diseases and to aid in the antibiotic resistance crisis, which are two of the most pressing issues in global public health. In this work, novel, hollow, calcined titanium dioxide nanospheres (CSTiO2) were successfully synthesized for the first time through the combination of electrospinning and atomic layer deposition techniques. Poly(vinylpyrrolidone) (PVP) electrosprayed spherical particles were double-coated with alumina and titanium dioxide, and after a calcination process, hollow nanospheres were obtained with a radius of approximately 345 nm and shell thickness of 17 nm. The structural characterization was performed using electron microscopy, and X-ray diffraction and small-angle X-ray diffraction evidenced an anatase titanium dioxide crystalline structure. Thermogravimetric analysis and Fourier-transform infrared spectroscopy studies demonstrated the absence of polymer residue after the calcination process. The antimicrobial properties of the developed CSTiO2 hollow nanospheres were evaluated against different bacteria, including resistant E. coli and S. aureus strains, and when compared to commercial TiO2 nanoparticles, CSTiO2 nanospheres exhibited superior performance. In addition, the positive effect of UV irradiation on the antimicrobial activity was demonstrated.
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Affiliation(s)
- Carol López de Dicastillo
- Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Universidad de Santiago de Chile (USACH), Obispo Umaña 050, 9170201 Santiago, Chile
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), 9170124 Santiago, Chile
| | - Cristian Patiño
- Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Universidad de Santiago de Chile (USACH), Obispo Umaña 050, 9170201 Santiago, Chile
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), 9170124 Santiago, Chile
| | - María José Galotto
- Food Packaging Laboratory (Laben-Chile), Department of Science and Food Technology, Faculty of Technology, Universidad de Santiago de Chile (USACH), Obispo Umaña 050, 9170201 Santiago, Chile
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), 9170124 Santiago, Chile
| | - Yesseny Vásquez-Martínez
- Program Center for Applied Biomedical Research, School of Medicine, Faculty of Medical Sciences, University of Santiago de Chile, 9170022 Santiago, Chile
- Department of Biology, Faculty of Chemistry and Biology, University of Santiago de Chile, Santiago 9170022, Chile
| | - Claudia Torrent
- Department of Biology, Faculty of Chemistry and Biology, University of Santiago de Chile, Santiago 9170022, Chile
| | - Daniela Alburquenque
- Department of Physics, Universidad de Santiago de Chile (USACH), Av. Ecuador 3493, 9170124 Santiago, Chile
| | - Alejandro Pereira
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), 9170124 Santiago, Chile
- Department of Sciences, Faculty of Liberal Arts, University Adolfo Ibáñez, 7941169 Santiago, Chile
| | - Juan Escrig
- Center for the Development of Nanoscience and Nanotechnology (CEDENNA), 9170124 Santiago, Chile
- Department of Physics, Universidad de Santiago de Chile (USACH), Av. Ecuador 3493, 9170124 Santiago, Chile
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17
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Jiang W, Huangfu T, Yang X, Bao L, Liu Y, Xu G, Han G. Surfactant-free hydrothermal synthesis of hierarchical flower-like Bi2WO6 mesosphere nanostructures with excellent visible-light photocatalytic activity. CrystEngComm 2019. [DOI: 10.1039/c9ce01170f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hierarchical flower-like Bi2WO6 mesosphere nanostructures self-assembled with nanosheets were synthesized by hydrothermal treatment of an aqueous suspension of Bi(NO3)3·5H2O and Na2WO4·2H2O without surfactants or mineralizers.
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Affiliation(s)
- Wan Jiang
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Tongshuai Huangfu
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Xin Yang
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
- Key Laboratory of Advanced Technique & Preparation for Renewable Energy Materials
| | - Liang Bao
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
- College of Materials & Environmental Engineering
| | - Yong Liu
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Gang Xu
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Gaorong Han
- State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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18
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Abstract
Undoubtedly, carbon-based (nano)composites can be promising photocatalysts with improved photocatalytic activity due to the coupling effect from the incorporation of carbon species. In this mini-review, we focus on the recent development of photocatalysts based on carbon-based (nano)composites. TiO2 is well-known as a typical photocatalyst. Special attention is paid to the various types of carbon–TiO2 composites such as C-doped TiO2, N–C-doped TiO2, metal–C-doped TiO2, and other co-doped C/TiO2 composites. Various synthetic strategies including the solvothermal/hydrothermal method, sol–gel method, and template-directed method are reviewed for the preparation of carbon-based TiO2 composites. C/graphitic carbon nitride (g-C3N4) composites and ternary C-doped composites are also summarized and ascribed to the unique electronic structure of g-C3N4 and the synergistic effect of the ternary interfaces, respectively. In the end, we put forward the future perspective of the photocatalysts containing carbon species based on our knowledge.
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19
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Li X, Lu X, Qi H, Yu K, Zhang Z. Mesoporous Spherical TiO
2
with Outstanding Photocatalysis under Visible Light. ChemistrySelect 2018. [DOI: 10.1002/slct.201800256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiangji Li
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
- Roll Forging Institute of Jilin University Changchun 130022 China
| | - Xiangkun Lu
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
- Roll Forging Institute of Jilin University Changchun 130022 China
| | - Hui Qi
- The Second Hospital of Jilin University Changchun 130041 China
| | - Kaifeng Yu
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
| | - Zhiqiang Zhang
- Key Laboratory of Automobile MaterialsMinistry of Educationand College of Materials Science and EngineeringJilin University Changchun 130022 China
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20
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Zhang X, Wang M, Lin L, Xiao G, Tang Z, Zhu X. Synthesis of novel laccase-biotitania biocatalysts for malachite green decolorization. J Biosci Bioeng 2018; 126:69-77. [PMID: 29567373 DOI: 10.1016/j.jbiosc.2018.01.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 01/19/2018] [Accepted: 01/30/2018] [Indexed: 12/12/2022]
Abstract
Biomimetic mineralization has emerged as a novel tool for generating excellent supports for enzyme stabilization. In this work, protamine was used to induce titanium (IV) bis(ammonium lactato) dihydroxide (Ti-BALDH) into titania nanoparticles. This biomimetic titanification process was adopted for laccase immobilization. Laccase-biotitania biocatalyst was prepared and the effect of different parameters (buffer solution, titania precursor concentration, protamine concentration, and enzyme loading) on the encapsulation efficiency and recovery of laccase were evaluated. Compared with free laccase, the thermal and pH stability of immobilized laccase were improved significantly. In addition, laccase loaded on titania was effective at enhancing its storage stability. After seven consecutive cycles, the immobilized laccase still retained 51% of its original activity. Finally, laccase-biotitania biocatalysts showed good performance on decolorization of malachite green (MG), which can be attributed to an adsorption and degradation effect. The intermediates of the MG degradation were identified by gas chromatography-mass spectrometry (GC-MS) analysis, and the most probable degradation pathway was proposed. This study provides deeper understanding of the laccase-biotitania particles as a fast biocatalyst for MG decolorization.
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Affiliation(s)
- Xinying Zhang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China; Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350002, China
| | - Meiyin Wang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Linlin Lin
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Gao Xiao
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Zhenping Tang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian 350108, PR China
| | - Xuefeng Zhu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd., Shanghai 200241, PR China; Section Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and GeoSciences, Delft University of Technology, 2628CN Delft, The Netherlands.
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21
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Xue YN, Zhang JY, Tang S, Liu JK, Yue YB, Yang XH. Rapid degradation of unmanageable polycyclic aromatic hydrocarbons by a C-ZnO solid solution nanocatalyst. NEW J CHEM 2018. [DOI: 10.1039/c7nj04855f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Unmanageable polycyclic aromatic hydrocarbons (PAHs) were rapidly degraded by a C atom-doped ZnO solid solution (C-ZnO SS) nanocatalyst due to the sucker effect.
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Affiliation(s)
- Ya-Nan Xue
- Key Laboratory for Advanced Materials
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai, 200237
- P. R. China
| | - Jing-Yu Zhang
- Key Laboratory for Advanced Materials
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai, 200237
- P. R. China
| | - Sheng Tang
- Shanghai Institute of Space Power-Sources
- Shanghai 200245
- P. R. China
| | - Jin-Ku Liu
- Key Laboratory for Advanced Materials
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai, 200237
- P. R. China
| | - Yun-Bo Yue
- Shanghai Institute of Space Power-Sources
- Shanghai 200245
- P. R. China
| | - Xiao-Hong Yang
- Department of Chemistry
- Chizhou University
- Chizhou, 247000
- P. R. China
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