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Zhang B, Li X, Ma Y, Jiang T, Zhu Y, Ren H. Visible-light photoelectrocatalysis/H 2O 2 synergistic degradation of organic pollutants by a magnetic Fe 3O 4@SiO 2@mesoporous TiO 2 catalyst-loaded photoelectrode. RSC Adv 2022; 12:30577-30587. [PMID: 36337955 PMCID: PMC9597414 DOI: 10.1039/d2ra05183d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/21/2022] [Indexed: 11/18/2022] Open
Abstract
In this paper, we describe a method for photoelectrocatalysis (PEC)/H2O2 synergistic degradation of organic pollutants with a magnetic Fe3O4@SiO2@mesoporous TiO2 (FST) photocatalyst-loaded electrode. At optimal conditions of pH 3.0, 2.25% H2O2, working electrode (fixed FST 30 mg) potential +0.6 V (vs. SCE), and 10 mg L-1 of all experimental pollutants, the FST PEC/H2O2 synergistic system exhibited high activity and stability for the removal of various organic pollutants under visible light with comparable degradation efficiencies, including MB (98.8%), rhodamine B (Rh B, 96.7%), methyl orange (MO, 97.7%), amoxicillin (AMX, 83.9%). Moreover, this system obtained TOC removal ratios of 83.5% (MB), 77.9% (Rh B), 80.2% (MO), 65.5% (AMX) within 8 min. The kinetic rate constants of the PEC/H2O2 synergistic system were nearly 53 and 1436 times higher than that of the PEC process and H2O2 photolysis under visible light, respectively. Furthermore, the main reactive oxidant species (˙OH, ˙O2 -) were studied and enhanced mechanisms of the photocatalytic-electro-H2O2 coupling system were proposed. This work brings new insights to efficiently purify organic pollutants by PEC coupled with peroxide under solar light illumination.
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Affiliation(s)
- Bo Zhang
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
| | - Xuemei Li
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
| | - Yongshan Ma
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
| | - Tianyi Jiang
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
| | - Yanyan Zhu
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
| | - Huixue Ren
- School of Municipal and Environmental Engineering, Shandong Jianzhu UniversityJinan 250101ShandongChina
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Ninakanti R, Dingenen F, Borah R, Peeters H, Verbruggen SW. Plasmonic Hybrid Nanostructures in Photocatalysis: Structures, Mechanisms, and Applications. Top Curr Chem (Cham) 2022; 380:40. [PMID: 35951165 DOI: 10.1007/s41061-022-00390-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 05/27/2022] [Indexed: 11/26/2022]
Abstract
(Sun)Light is an abundantly available sustainable source of energy that has been used in catalyzing chemical reactions for several decades now. In particular, studies related to the interaction of light with plasmonic nanostructures have been receiving increased attention. These structures display the unique property of localized surface plasmon resonance, which converts light of a specific wavelength range into hot charge carriers, along with strong local electromagnetic fields, and/or heat, which may all enhance the reaction efficiency in their own way. These unique properties of plasmonic nanoparticles can be conveniently tuned by varying the metal type, size, shape, and dielectric environment, thus prompting a research focus on rationally designed plasmonic hybrid nanostructures. In this review, the term "hybrid" implies nanomaterials that consist of multiple plasmonic or non-plasmonic materials, forming complex configurations in the geometry and/or at the atomic level. We discuss the synthetic techniques and evolution of such hybrid plasmonic nanostructures giving rise to a wide variety of material and geometric configurations. Bimetallic alloys, which result in a new set of opto-physical parameters, are compared with core-shell configurations. For the latter, the use of metal, semiconductor, and polymer shells is reviewed. Also, more complex structures such as Janus and antenna reactor composites are discussed. This review further summarizes the studies exploiting plasmonic hybrids to elucidate the plasmonic-photocatalytic mechanism. Finally, we review the implementation of these plasmonic hybrids in different photocatalytic application domains such as H2 generation, CO2 reduction, water purification, air purification, and disinfection.
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Affiliation(s)
- Rajeshreddy Ninakanti
- Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Fons Dingenen
- Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Rituraj Borah
- Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Hannelore Peeters
- Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium
| | - Sammy W Verbruggen
- Sustainable Energy, Air and Water Technology (DuEL), Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
- NANOlab Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
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Bastug Azer B, Gulsaran A, Pennings JR, Saritas R, Kocer S, Bennett JL, Devdas Abhang Y, Pope MA, Abdel-Rahman E, Yavuz M. A Review: TiO2 based photoelectrocatalytic chemical oxygen demand sensors and their usage in industrial applications. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116466] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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4
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Sun Q, Han B, Li K, Yu L, Dong L. The synergetic degradation of organic pollutants and removal of Cr(VI) in a multifunctional dual-chamber photocatalytic fuel cell with Ag@Fe2O3 cathode. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119966] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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5
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Sun Q, Hou P, Wu S, Yu L, Dong L. The enhanced photocatalytic activity of Ag-Fe2O3-TiO2 performed in Z-scheme route associated with localized surface plasmon resonance effect. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Environmental and human health are threatened by anthropogenic heavy metal discharge into watersheds. Traditional processes have many limitations, such as low efficiency, high cost, and by-products. Photocatalysis, an emerging advanced catalytic oxidation technology, uses light energy as the only source of energy. It is a clean new technology that can be widely used in the treatment of organic pollutants in water. Given the excellent adaptability of photocatalysis in environmental remediation, it can be used for the treatment of heavy metals. In this comprehensive review, the existing reported works in relevant areas are summarized and discussed. Moreover, recommendations for future work are provided.
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Cendrowski K, Pachnowska K, Augustyniak A, Wierzbicka J, Pratnicki F, Kucharski P, Kukułka W, Mijowska E. The impact of environmental water on the potential application of core-shell titania-silica nanospheres as photocatalysts. NANOTECHNOLOGY 2021; 32:315703. [PMID: 33878741 DOI: 10.1088/1361-6528/abf9c5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/20/2021] [Indexed: 06/12/2023]
Abstract
In this study, the core-shell silica nanospheres modified with titanium dioxide were tested in the photocatalytic decomposition of dyes. The presented data underlines the advantages and shortcomings in the potential application of silica-based catalysts to neutralize organic pollutants. During the photocatalytic reaction in distilled water, catalysts showed decreased efficiency due to a carbon layer deposited on its surface. This finding set an additional goal to investigate the possibility of regenerating the photocatalyst. Studies have shown that the catalyst could be successfully reused following the thermal removal of deposited carbon.Furthermore, the reactivated silica-titania catalysts exhibited comparable photocatalytic performance to the newly made nanomaterial. Surprisingly, catalyst application in the river water eventually resulted in the permanent deactivation of silica-titania nanospheres, which was caused by the interchangeable silica dissolution/precipitation process on the surface of the studied nanomaterial. In environmental water, silica dissolves and precipitates on titanium dioxide's surface, blocking the interaction between organic compounds and TiO2. The deactivation occurring in the environmental samples is irreversible. In distilled water, the decomposition of organic compounds leads to photocatalysts' deactivation by forming a carbon layer on their surface. Reactivation of the silica-based photocatalyst after distilled water is achievable by annealing at a high temperature. In light of our findings, the combination of the photocatalytic properties of TiO2and the silica template shows no prospects in the purification of polluted waste or environmental water.
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Affiliation(s)
- Krzysztof Cendrowski
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
- Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology, Szczecin, Al Piastów 50a, Szczecin 70-311, Poland
| | - Kamila Pachnowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
- Department of Horticulture, Faculty of Environmental Management and Agriculture, West Pomeranian University of Technology, Szczecin, Juliusza Słowackiego 17, Szczecin 71-434, Poland
| | - Adrian Augustyniak
- Department of Chemical and Process Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 42, 71-065 Szczecin, Poland
- Building Materials and Construction Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, D-13-355 Berlin, Germany
| | - Jagoda Wierzbicka
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
| | - Filip Pratnicki
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
- Institute of Physics, University of Szczecin, Wielkopolska 15, 70-451 Szczecin, Poland
| | - Pawel Kucharski
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
| | - Wojciech Kukułka
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
| | - Ewa Mijowska
- Department of Nanomaterials Physicochemistry, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastów 45, Szczecin 70-311, Poland
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Li A, Xie L, Zhou S, Zhang M, Ding Y, Wang P. Optimization of Fe3O4/SiO2/N-TiO2/Ag/AgCl core-shell nanomaterial and its properties, repeatability and photocatalytic mechanism. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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9
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Brossault DF, McCoy TM, Routh AF. Self-assembly of TiO2/Fe3O4/SiO2 microbeads: A green approach to produce magnetic photocatalysts. J Colloid Interface Sci 2021; 584:779-788. [DOI: 10.1016/j.jcis.2020.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 09/30/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023]
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10
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Hosseini SG, Pasikhani JV. Enhanced optical properties and photocatalytic activity of TiO 2 nanotubes by using magnetic activated carbon: evaluating photocatalytic reduction of Cr(VI). ENVIRONMENTAL TECHNOLOGY 2021; 42:914-931. [PMID: 31378151 DOI: 10.1080/09593330.2019.1649466] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 07/21/2019] [Indexed: 06/10/2023]
Abstract
In recent years, photocatalytic reduction of Cr(VI) to Cr(III) by TiO2 nanostructures, as a potent environmental technology has attracted a lot of attention. However, several defects including the large band gap energy of TiO2, fast photogenerated charge recombination and re-oxidation of Cr(III) restrict their practical application. In this work, the incorporation of TiO2 nanotubes (TNTs) with magnetic activated carbon (MAC) and photoreduction in the presence of a hole scavenger were studied as a preferable approach. The results revealed that coupling TNTs with 2 wt% MAC can boost the surface area from 89.54 to 307.87 m2 g-1 as well as decrease the band gap energy from 3.1 to 2.7 eV. As a consequence of the enhancement in textural features and optical properties, TNTs/MAC (2%) led to improvement of photoreduction efficiency (from 47% to 66%) in comparison with the TNTs. Meanwhile, the experiments demonstrated that using 0.2 g TNTs/MAC as an optimal dosage in acidic solution increases the photoreduction efficiency up to 81%. The hole scavenger investigation had a marvellous result. It was found that in the presence of oxalic acid, TNTs/MAC (2%) could reduce 97% of Cr(VI) which it was due to trapping oxidative species and charge-transfer-complex-mediated process. Furthermore, the kinetic study affirmed that the photoreduction follow first-order kinetics and the reaction rate constants by TNTs/MAC (2%) are 1.5 times as great as those of TNTs. Moreover, the reusability tests illustrated TNTs/MAC (2%) has good stability and is active even up to the six runs.
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Shahzad K, Najam T, Bashir MS, Nazir MA, Rehman AU, Bashir MA, Shah SSA. Fabrication of Periodic Mesoporous Organo Silicate (PMOS) composites of Ag and ZnO: Photo-catalytic degradation of methylene blue and methyl orange. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2020.108357] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Zhen Y, Zhang Q, Zhang X, Zhang G, Chen X, Zhao C. A novel tubular up-flow magnetic film photocatalytic system optimized by main factors control for efficient removal of chlorophenols wastewater. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:122963. [PMID: 32512454 DOI: 10.1016/j.jhazmat.2020.122963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/29/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Chlorophenols (CPs) are still used as raw material or intermediate in some industries. Photocatalytic oxidation is free from secondary pollution, but the efficiency is restricted by some main factors. In this study, a novel high efficiency tubular up-flow magnetic film (TUMF) photocatalytic system was investigated based on the magnetic lanthanum doping core-shell Fe3O4@SiO2@TiO2 (La-FST) nanoparticles. When the dosage of La-FST was 0.4 g/L, the flow velocity was 94.2 mL/min, and the circulated irradiation of 15 W maintained 40 min, the average removal rate of 2,4-dichlorophenol (2,4-DCP) was reduced significantly from 10 mg/L to 0.0803 mg/L by TUMF system, meeting the limits of the particular items (0.093 mg/L) from national environmental quality standards for surface water, avoiding the problem of photocatalyst separation and loss. The photoinduced holes (h+) was the key active radical to oxidize 2,4-DCP, and the main factors of TUMF system could be well controlled to achieve satisfactory effluent quality. A prediction method of photocatalytic reaction time in a multistage series TUMF system was established to remove 2,4-DCP from 100 mg/L to 0.5 mg/L, saving 86 min. The novel high-efficiency TUMF system provides a technical selection for the photocatalytic degradation of CPs and other refractory organics.
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Affiliation(s)
- Yichen Zhen
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Qiang Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Xiaoyan Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Guanteng Zhang
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Xiaoxin Chen
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
| | - Chunxia Zhao
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding 071002, China.
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13
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Wei Z, Zheng N, Dong X, Zhang X, Ma H, Zhang X, Xue M. Green and controllable synthesis of one-dimensional Bi 2O 3/BiOI heterojunction for highly efficient visible-light-driven photocatalytic reduction of Cr(VI). CHEMOSPHERE 2020; 257:127210. [PMID: 32502738 DOI: 10.1016/j.chemosphere.2020.127210] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 05/13/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
BiOI nanosheets have been successfully deposited on the porous Bi2O3 nanorobs via a one-pot precipitation method. The physicochemical features of the as-prepared materials were characterized in detail by a series of techniques, and the results revealed that BiOI nanosheets were evenly distributed on the porous Bi2O3 nanorobs. Because of higher photogenerated electron-hole pairs separation efficiency and the larger specific surface area compared to the pristine Bi2O3 and BiOI, the 50%Bi2O3/BiOI composite exhibited significantly enhanced photocatalytic activity for Cr(VI) reduction under visible light irradiation, and the reduction rate constant was 0.02002 min-1, which was about 27.4 and 2.6 times higher than that of pure Bi2O3 (0.00073 min-1) and BiOI (0.00769 min-1), respectively. Moreover, the 50%Bi2O3/BiOI composite also possessed the excellent photochemical stability and recyclability, thereby facilitating its wastewater treatment application.
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Affiliation(s)
- Zhiping Wei
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Nan Zheng
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Xiaoli Dong
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China.
| | - Xiufang Zhang
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Hongchao Ma
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Xinxin Zhang
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
| | - Mang Xue
- Schoolof Light Industry and Chemical Engineering, Dalian Polytechnic University, #1 Qinggongyuan, Dalian, 116034, PR China
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Continuous high-efficient degradation of organic pollutants based on sea urchin-like Fe3O4/ZnO/ZnSe heterostructures in photocatalytic magnetically fixed bed reactor. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125198] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Saha D, Hoinkis TJ, Van Bramer SE. Electrospun, flexible and reusable nanofiber mat of graphitic carbon nitride: Photocatalytic reduction of hexavalent chromium. J Colloid Interface Sci 2020; 575:433-442. [DOI: 10.1016/j.jcis.2020.04.090] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 11/30/2022]
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16
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Long Z, Li Q, Wei T, Zhang G, Ren Z. Historical development and prospects of photocatalysts for pollutant removal in water. JOURNAL OF HAZARDOUS MATERIALS 2020; 395:122599. [PMID: 32302881 DOI: 10.1016/j.jhazmat.2020.122599] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/25/2020] [Accepted: 03/26/2020] [Indexed: 05/21/2023]
Abstract
Photocatalysis, as a low-cost and environment friendly technology, has demonstrated a significant potential for water pollution purification; it has received extensive attention in recent decades. The key is the photocatalyst; a large number of photocatalysts have been developed. To better understand and further develop the photocatalysis technology for water treatment, this review summarizes its development over time. The development period is divided into four stages (1960s-1993, 1994-2000, 2001-2010, and 2011-present) to provide readers with a better understanding of the development characteristics, and causes and consequences of each historical stage. This review expounds the origin and development of photocatalysis and the obstacles encountered and overcome. It describes the development of mechanisms and methods to solve these problems in each time period. Moreover, it reviews the recent development of new photocatalysts, the concept of designing photocatalysts, and photocatalytic-coupling systems. Finally, it enumerates the problems that continue to exist in the application of photocatalysis technology, and highlights the key issues that must be addressed in future research. The review is aimed at providing the researchers with a deeper understanding of photocatalysis technology and encourage further development of the application of photocatalysis to water treatment.
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Affiliation(s)
- Zeqing Long
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Qiangang Li
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Ting Wei
- School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Guangming Zhang
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China.
| | - Zhijun Ren
- School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin, 300130, China.
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17
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Zhang C, Gu Y, Teng G, Wang L, Jin X, Qiang Z, Ma W. Fabrication of a Double-Shell Ag/AgCl/G-ZnFe 2O 4 Nanocube with Enhanced Light Absorption and Superior Photocatalytic Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29883-29898. [PMID: 32319749 DOI: 10.1021/acsami.0c01476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Development of highly efficient photocatalysts is a primary goal in the photocatalysis domain among which reusable composites with a synergistic photocatalytic effect have attracted extensive interest. The ability of catalysts to capture light determines their photocatalytic effect, and porous or hollow photocatalysts are more conducive to the entry and reflection of light. The goal of this research is to develop a type of visible-light-driven, double-shell photocatalyst with high antibacterial activity and excellent cycling stability. Photocatalysts were fabricated using hollow graphitized ZnFe2O4 nanospheres (G-ZnFe2O4) as the carrier. After G-ZnFe2O4 was functionalized with a polydopamine (PDA) template layer, Ag nanoparticles (NPs) and cubic AgCl NPs were in situ generated on the surface of the PDA/G-ZnFe2O4 nanospheres successively. Then, the PDA template was removed using KOH solution, and double-shell Ag/AgCl/G-ZnFe2O4 nanocubes (referred to as DAGZNs) with excellent photocatalytic antibacterial activity were constructed. The DAGZNs showed excellent antibacterial properties against Staphylococcus aureus and Escherichia coli. The efficient synergistic photocatalytic antibacterial activity coupled with magnetic separability and recyclability of DAGZNs make them potential for practical application in water purification and environmental protection. The method of designing and synthesizing double-shell structures to enhance photocatalysis may also be extended to synthesis of other photocatalytic and optical materials.
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Affiliation(s)
- Chun Zhang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Yinan Gu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Guixiang Teng
- Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, P. R. China
| | - Liping Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Xiaodong Jin
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Zengwei Qiang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou 730070, P. R. China
| | - Weigang Ma
- School of Aerospace Engineering, Tsinghua University, Beijing 100084, P. R. China
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18
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Bao Y, Guo R, Ma J. Hierarchical Flower-Like Hollow SiO 2@TiO 2 Spheres with Enhanced Thermal Insulation and Ultraviolet Resistance Performances for Building Coating. ACS APPLIED MATERIALS & INTERFACES 2020; 12:24250-24261. [PMID: 32365290 DOI: 10.1021/acsami.0c03125] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this paper, a novel 3D hierarchical flower-like hollow SiO2@TiO2 sphere (FHST) with a large number of irregular nanosheets was successfully prepared by a solvothermal method and subsequent calcination process, in which multiple different functional components were perfectly integrated into a single nanostructure. The morphology and structure of FHSTs were characterized by SEM, TEM, XRD, XPS, and BET. The growth mechanism of the 3D flower-like structure was obtained through a series of single-factor experiments, of which hexamethylenetetramine acted in a vital role. Moreover, it was also used as a filler for polyacrylate substrate to improve the thermal insulation and ultraviolet resistance properties of architectural coatings. The results showed that the composite film with FHSTs had lower thermal conductivity and higher light reflection performance compared to those with hollow SiO2 spheres, hollow TiO2 spheres, and hollow SiO2@TiO2 spheres. More significantly, its transmittance at the full wavelength of ultraviolet light was almost zero, exhibiting a prominent inhibitory effect on UVA. In addition, compared with commercially available hollow glass microspheres, FHSTs had more excellent thermal insulation performance in practical applications.
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Affiliation(s)
- Yan Bao
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Ruyue Guo
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
- National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
| | - Jianzhong Ma
- College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, P. R. China
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Kokkinos P, Mantzavinos D, Venieri D. Current Trends in the Application of Nanomaterials for the Removal of Emerging Micropollutants and Pathogens from Water. Molecules 2020; 25:molecules25092016. [PMID: 32357416 PMCID: PMC7248945 DOI: 10.3390/molecules25092016] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/10/2020] [Accepted: 04/21/2020] [Indexed: 12/20/2022] Open
Abstract
Water resources contamination has a worldwide impact and is a cause of global concern. The need for provision of clean water is becoming more and more demanding. Nanotechnology may support effective strategies for the treatment, use and reuse of water and the development of next-generation water supply systems. The excellent properties and effectiveness of nanomaterials make them particularly suitable for water/wastewater treatment. This review provides a comprehensive overview of the main categories of nanomaterials used in catalytic processes (carbon nanotubes/graphitic carbon nitride (CNT/g-C3N4) composites/graphene-based composites, metal oxides and composites, metal–organic framework and commercially available nanomaterials). These materials have found application in the removal of different categories of pollutants, including pharmaceutically active compounds, personal care products, organic micropollutants, as well as for the disinfection of bacterial, viral and protozoa microbial targets, in water and wastewater matrices. Apart from reviewing the characteristics and efficacy of the aforementioned nanoengineered materials for the removal of different pollutants, we have also recorded performance limitations issues (e.g., toxicity, operating conditions and reuse) for their practical application in water and wastewater treatment on large scale. Research efforts and continuous production are expected to support the development of eco-friendly, economic and efficient nanomaterials for real life applications in the near future.
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Affiliation(s)
- Petros Kokkinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
- Correspondence: ; Tel.: +30-6972025932
| | - Dionissios Mantzavinos
- Department of Chemical Engineering, University of Patras, Caratheodory 1, University Campus, GR-26504 Patras, Greece
| | - Danae Venieri
- School of Environmental Engineering, Technical University of Crete, GR-73100 Chania, Greece
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Tran VT, Lee DK, Kim J, Lee J, Tufa LT, Pham-Cong D, Kim CS, Lee J. Porosity-controllable magnetoplasmonic nanoparticles and their assembled arrays. NANOSCALE 2020; 12:8453-8465. [PMID: 32239078 DOI: 10.1039/d0nr01178a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Control of the chemical and physical properties of nanoscale colloids and their nanoassemblies remains a challenging issue for enhancing the performance and functionalities of nanodevices. In this study, we report a post-synthesis etching method to tailor the porosity of the Fe3O4 shells coating on Ag NPs, establishing a facile but effective approach to regulate the chemical and optical properties of the colloids and their assembled structures. As the shell porosity increases, the NPs are transformed, producing enhanced catalytic activity and the surface-enhanced Raman spectroscopy (SERS) effect, which results from enhanced chemical diffusion into the Ag core. Magnetoplasmonic (MagPlas) one- (1D) and two- (2D) dimensional arrays fabricated using these porosity-controllable NPs exhibit intriguing plasmon properties that are strongly affected by the porosity of the particle shell. Furthermore, the bright coloration of the 2D arrays is tuned by changing the shell porosity or introducing an additional metallic layer. Such 1D and 2D porous MagPlas metastructures possessing Fe3O4 shells with tunable porosities are a fulcrum for developing recyclable catalysts and tunable optical filters with optimized activity, selectivity, and sensitivity, as well as color displays and sensing platforms.
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Affiliation(s)
- Van Tan Tran
- Department of Chemistry, College of Natural Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
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Gopalan Sibi M, Verma D, Kim J. Magnetic core–shell nanocatalysts: promising versatile catalysts for organic and photocatalytic reactions. CATALYSIS REVIEWS 2020. [DOI: 10.1080/01614940.2019.1659555] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Malayil Gopalan Sibi
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
| | - Deepak Verma
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
| | - Jaehoon Kim
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, Gyeong Gi-Do, Republic of Korea
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22
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Jawdat FH, Lin J, Dou SX, Park MS, Nattestad A, Kim JH. Oxygen-Deficient TiO2-δ Synthesized from MIL-125 Metal-Organic Framework for Photocatalytic Dye Degradation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Fanar Hussein Jawdat
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW 2500, Australia
- Department of Mechanical Engineering, College of Engineering, University of Baghdad, Iraq
| | - Jianjian Lin
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China
| | - Shi Xue Dou
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW 2500, Australia
| | - Min-Sik Park
- Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Korea
| | - Andrew Nattestad
- Intelligent Polymer Research Institute (IPRI), ARC Centre of Excellence for Electromaterials Science, AIIM, University of Wollongong, North Wollongong, NSW 2500, Australia
| | - Jung Ho Kim
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, North Wollongong, NSW 2500, Australia
- Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Korea
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Pan S, Liu Z, Lu W. Synthesis of naked plasmonic/magnetic Au/Fe 3O 4 nanostructures by plasmon-driven anti-replacement reaction. NANOTECHNOLOGY 2019; 30:065605. [PMID: 30523894 DOI: 10.1088/1361-6528/aaf17c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, naked Au(core)/Fe3O4(shell) hybrid nanostructures are rapidly synthesized by a plasmon-driven anti-replacement reaction. The Au nanoparticles are prepared by pulsed laser ablation in water. The mixture of Au nanoparticles and FeCl3 solution is irradiated under a laser with a specific wavelength. The Fe3+ ions are reduced to low valence species by the 'hot electrons' in Au, and form the Fe3O4 spindles on the surface of Au nanoparticles. The Au nanoparticles are synchronously oxidized to Au+ and Au3+ ions by the 'hot holes'. The saturation magnetization and coercivity of Fe3O4 spindles are 48.7 emu g-1 and 218.9 Oe, respectively. Our work provides a facile route to obtain the naked Au/Fe3O4 plasmonic/magnetic nanostructures.
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Affiliation(s)
- Shusheng Pan
- Department of Physics, School of Physics and Electronic Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China
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24
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Mishra P, Patnaik S, Parida K. An overview of recent progress on noble metal modified magnetic Fe3O4 for photocatalytic pollutant degradation and H2 evolution. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02462f] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Noble metal modified magnetic Fe3O4 catalysts for photocatalytic pollutant degradation and H2 evolution are reviewed.
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Affiliation(s)
- Priti Mishra
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
| | - Sulagna Patnaik
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
| | - Kulamani Parida
- Centre for Nano Science and Nano Technology
- Institute of Technical Education and Research
- Siksha ‘O’ Anusandhan University
- Bhubaneswar-751030
- India
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VARANDA LAUDEMIRC, SOUZA CAIOG, MORAES DANIELA, NEVES HERBERTR, SOUZA JUNIOR JOÃOB, SILVA MONICAF, BINI RAFAELA, ALBERS REBECCAF, SILVA TIAGOL, BECK JUNIOR WATSON. Size and shape-controlled nanomaterials based on modified polyol and thermal decomposition approaches. A brief review. ACTA ACUST UNITED AC 2019. [DOI: 10.1590/0001-3765201920181180] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
| | - CAIO G.S. SOUZA
- Universidade de São Paulo/USP, Brazil; Instituto Federal do Paraná/IFPR, Brazil
| | | | - HERBERT R. NEVES
- Universidade de São Paulo/USP, Brazil; Instituto Federal Catarinense/IFC, Brazil
| | | | | | - RAFAEL A. BINI
- Universidade Tecnológica Federal do Paraná/UFTPR, Brazil
| | - REBECCA F. ALBERS
- Universidade de São Paulo/USP, Brazil; Universidade Federal de São Carlos/UFSCar, Brazil
| | - TIAGO L. SILVA
- Universidade de São Paulo/USP, Brazil; Universidade Federal de São Carlos/UFSCar, Brazil
| | - WATSON BECK JUNIOR
- Universidade de São Paulo/USP, Brazil; Instituto Federal de Santa Catarina/IFSC, Brazil
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26
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Li W, Elzatahry A, Aldhayan D, Zhao D. Core-shell structured titanium dioxide nanomaterials for solar energy utilization. Chem Soc Rev 2018; 47:8203-8237. [PMID: 30137079 DOI: 10.1039/c8cs00443a] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Because of its unmatched resource potential, solar energy utilization currently is one of the hottest research areas. Much effort has been devoted to developing advanced materials for converting solar energy into electricity, solar fuels, active chemicals, or heat. Among them, TiO2 nanomaterials have attracted much attention due to their unique properties such as low cost, nontoxicity, good stability and excellent optical and electrical properties. Great progress has been made, but research opportunities are still present for creating new nanostructured TiO2 materials. Core-shell structured nanomaterials are of great interest as they provide a platform to integrate multiple components into a functional system, showing improved or new physical and chemical properties, which are unavailable from the isolated components. Consequently, significant effort is underway to design, fabricate and evaluate core-shell structured TiO2 nanomaterials for solar energy utilization to overcome the remaining challenges, for example, insufficient light absorption and low quantum efficiency. This review strives to provide a comprehensive overview of major advances in the synthesis of core-shell structured TiO2 nanomaterials for solar energy utilization. This review starts from the general protocols to construct core-shell structured TiO2 nanomaterials, and then discusses their applications in photocatalysis, water splitting, photocatalytic CO2 reduction, solar cells and photothermal conversion. Finally, we conclude with an outlook section to offer some insights on the future directions and prospects of core-shell structured TiO2 nanomaterials and solar energy conversion.
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Affiliation(s)
- Wei Li
- Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, iChEM and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200433, P. R. China.
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27
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Ghafoor S, Hussain SZ, Waseem S, Arshad SN. Photo-reduction of heavy metal ions and photo-disinfection of pathogenic bacteria under simulated solar light using photosensitized TiO 2 nanofibers. RSC Adv 2018; 8:20354-20362. [PMID: 35541678 PMCID: PMC9080839 DOI: 10.1039/c8ra01237g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Accepted: 05/29/2018] [Indexed: 11/21/2022] Open
Abstract
We report the photosensitization of electrospun titania nanofibers, with a mean diameter of 195 nm, by low bandgap silver sulfide nanoparticles of 11-23 nm mean size with the aim of treating heavy metal ions and pathogenic bacteria simultaneously under simulated solar light irradiation. The 17 nm Ag2S/TiO2 nanofibers showed 90% photocatalytic reduction of Cr(vi) at pH of 3 with a pseudo-first order rate constant of 0.016 min-1 which is significantly better than the previously reported for Ag-Ag2S/TiO2 composite particles. The antibacterial capability of the Ag2S/TiO2 nanofibers was evaluated via photo-disinfection of the Gram-positive and Gram-negative bacterial strains. The smallest sized 11 nm Ag2S/TiO2 nanofiber showed the best bactericidal efficiency of 100% and 90.6% against Gram-negative E. coli and Gram-positive S. aureus after 1 h of irradiation, respectively, whereas, only 50% E. coli and 41% S. aureus were found to be inactivated in dark. Furthermore, a UV-O3 treatment of the 11 nm Ag2S/TiO2 nanofibers remarkably enhanced the antibacterial activity where 89% E. coli and 81% S. aureus were inactivated in just 10 min of the irradiation. Enhanced photocatalytic activity is attributed to the efficient charge separation and transfer and reduced electron-hole recombination induced by the effective heterojunction formation between TiO2 and the optimally sized Ag2S nanoparticles. The disinfection nature of the Ag2S nanoparticles, role of the generated hydroxyl species under irradiation, and the cell wall damage mechanism is also discussed. This study demonstrates the potential use of these multifunctional composite TiO2 nanofibers for water remediation.
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Affiliation(s)
- Samina Ghafoor
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences Lahore 54792 Pakistan
- Institute of Chemistry, University of the Punjab P. O. Box 54590 Lahore Pakistan
| | - Syed Zajif Hussain
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences Lahore 54792 Pakistan
| | - Sadia Waseem
- Institute of Chemistry, University of the Punjab P. O. Box 54590 Lahore Pakistan
| | - Salman Noshear Arshad
- Department of Chemistry and Chemical Engineering, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences Lahore 54792 Pakistan
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28
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Tseng WJ, Chuang YC, Chen YA. Mesoporous Fe3O4@Ag@TiO2 nanocomposite particles for magnetically recyclable photocatalysis and bactericide. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2017.12.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Yu Z, Bai Y, Zhang S, Liu Y, Zhang N, Wang G, Wei J, Wu Q, Sun K. Metal-Organic Framework-Derived Co 3ZnC/Co Embedded in Nitrogen-Doped Carbon Nanotube-Grafted Carbon Polyhedra as a High-Performance Electrocatalyst for Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:6245-6252. [PMID: 29376634 DOI: 10.1021/acsami.7b16130] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of efficient, low-cost, and stable electrocatalysts for overall water splitting is of great significance for energy conversion. Transition-metal carbides (TMCs) with high catalytic activity and low cost have attracted great interests. Nevertheless, utilizing an efficient catalyst for overall water splitting is still a challenging issue for TMCs. Herein, we report the synthesis of a high-performance electrocatalyst comprising Co3ZnC and Co nanoparticles embedded in a nitrogen-doped carbon nanotube-grafted carbon polyhedral (Co3ZnC/Co-NCCP) by the pyrolysis of bimetallic zeolitic imidazolate frameworks in a reductive atmosphere of Ar/H2. The Co3ZnC/Co-NCCP exhibits remarkable electrochemical activity in catalyzing both the oxygen evolution reaction and hydrogen evolution reaction, in terms of low overpotential and excellent stability. Furthermore, the Co3ZnC/Co-NCCP catalyst leads to a highly performed overall water splitting in the 1 M KOH electrolyte, delivering a current density of 10 mA cm-2 at a low applied external potential of 1.65 V and shows good stability without obvious deactivation after 10 h operation. The present strategy opens a new avenue to the design of efficient electrocatalysts in electrochemical applications.
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Affiliation(s)
| | - Yu Bai
- Advanced Research Institute for Multidisciplinary Science, Beijing Institute of Technology , Beijing 100081, P. R. China
| | | | | | | | - Guohua Wang
- State Key Laboratory of Advanced Chemical Power Sources , Zunyi 563000, P. R. China
| | - Junhua Wei
- State Key Laboratory of Advanced Chemical Power Sources , Zunyi 563000, P. R. China
| | - Qibing Wu
- State Key Laboratory of Advanced Chemical Power Sources , Zunyi 563000, P. R. China
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Wu N. Plasmonic metal-semiconductor photocatalysts and photoelectrochemical cells: a review. NANOSCALE 2018; 10:2679-2696. [PMID: 29376162 DOI: 10.1039/c7nr08487k] [Citation(s) in RCA: 189] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The incorporation of plasmonic metals into semiconductors is a promising route to improve the performance of photocatalysts and photoelectrochemical cells. This article summarizes the three major mechanisms of plasmonic energy transfer from a metal to a semiconductor, including light scattering/trapping, plasmon-induced resonance energy transfer (PIRET) and hot electron injection (also called direct electron transfer (DET)). It also discusses the rational design of plasmonic metal-semiconductor heterojunctions based on the underlying plasmonic energy transfer mechanisms. Moreover, this article highlights the applications of plasmonic photocatalysts and photoelectrochemical cells in solar water splitting, carbon dioxide reduction and environmental pollutant decomposition.
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Affiliation(s)
- Nianqiang Wu
- Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, West Virginia 26506-6106, USA.
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G. A. SJ, Arumugam S. Rare-Earth-Based MIS Type Core-Shell Nanospheres with Visible-Light-Driven Photocatalytic Activity through an Electron Hopping-Trapping Mechanism. ACS OMEGA 2018; 3:1090-1101. [PMID: 31457951 PMCID: PMC6641512 DOI: 10.1021/acsomega.7b01607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 01/12/2018] [Indexed: 05/04/2023]
Abstract
A bilayered rare-earth-based metal-insulator-semiconductor, Dy2O3@SiO2@ZnO core-shell nanospheres, was synthesized by a stepwise synthesis for enhanced visible photocatalytic activity. The prepared material was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy, field-emission scanning electron microscopy, energy-dispersive spectroscopy, high-resolution transmission electron microscopy, selected area electron diffraction, atomic force microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, and electron paramagnetic resonance techniques. Dy2O3@SiO2@ZnO core-shell nanospheres were found be in a spherically arranged cauliflower-like morphology (40-60 nm). The high-resolution transmission electron microscopy analysis proved the core-shell morphology of the prepared material with a single Dy2O3 core and two shells comprising SiO2 and ZnO. The material possessed a surface roughness of 4. 98 nm (2 × 2 μm area) and a band gap energy of 2.82 eV. The in situ generation of OH radicals was confirmed by electron paramagnetic resonance. Electron hopping through the SiO2 layer from ZnO to Dy2O3 played a major role in trapping electrons in the f-shells of lanthanides, thus, preventing the recombination of electron-hole pair. X-ray photoelectron spectroscopy studies proved the band alignment of the material. Brunauer-Emmett-Teller analysis further showed the core-shell surface area was 14 m2/g. The visible photocatalytic activity was tested against 2,4-D (2,4-dichlorophenoxyacetic acid), an endocrine disruptor. The kinetic studies showed that the photocatalytic degradation process followed a pseudo-first-order pathway. The photocatalyst was found to be reusable even up to the third cycle.
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32
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Fan W, Zhu Z, Yu Y, Liu Z, Li C, Huo P, Qiu Y, Yan Y. Fabrication of magnetic g-C3N4 for effectively enhanced tetracycline degradation with RGO as mediator. NEW J CHEM 2018. [DOI: 10.1039/c8nj02994f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present work, the ternary hybrid photocatalyst Fe3O4@g-C3N4/RGO is developed by a facile hydrothermal method, which shows a satisfactory degradation rate (90%) and stability in degrading tetracycline.
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Affiliation(s)
- Wenqian Fan
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University
- Dalian 116029
- P. R. China
| | - Zhi Zhu
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University
- Zhen Jiang 212000
- P. R. China
| | - Yang Yu
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University
- Zhen Jiang 212000
- P. R. China
| | - Zhi Liu
- Faculty of Chemistry and Chemical Engineering, Liaoning Normal University
- Dalian 116029
- P. R. China
| | - Chunxiang Li
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University
- Zhen Jiang 212000
- P. R. China
| | - Pengwei Huo
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University
- Zhen Jiang 212000
- P. R. China
| | - Yue Qiu
- Grimwade Centre for Cultural Materials Conservation, School of Historical and Philosophical Studies, Faculty of Arts, University of Melbourne
- Victoria
- Australia
| | - Yongsheng Yan
- Institute of the Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University
- Zhen Jiang 212000
- P. R. China
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33
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Lv Y, Yue L, Li Q, Shao B, Zhao S, Wang H, Wu S, Wang Z. Recyclable (Fe3O4-NaYF4:Yb,Tm)@TiO2 nanocomposites with near-infrared enhanced photocatalytic activity. Dalton Trans 2018; 47:1666-1673. [DOI: 10.1039/c7dt04279e] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, the design and synthesis of a multifunctional (Fe3O4-NaYF4:Yb,Tm)@TiO2 photocatalyst through a facile sol–gel process combined with electrostatic self-assembly has been reported.
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Affiliation(s)
- Yan Lv
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Lin Yue
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Qian Li
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Baoyi Shao
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Sen Zhao
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Haitao Wang
- National Engineering Research Center of Seafood
- School of Food Science and Technology
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Shijia Wu
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi 214122
- China
- School of Food Science and Technology
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Mudassir MA, Hussain SZ, Khan M, Asma ST, Iqbal Z, Huma Z, Ullah N, Zhang H, Ansari TM, Hussain I. Polyacrylamide exotemplate-assisted synthesis of hierarchically porous nanostructured TiO2macrobeads for efficient photodegradation of organic dyes and microbes. RSC Adv 2018; 8:29628-29636. [PMID: 35547285 PMCID: PMC9085283 DOI: 10.1039/c8ra06197a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 08/15/2018] [Indexed: 11/21/2022] Open
Abstract
Hierarchically porous nanostructured anatase TiO2macrobeads prepared by using emulsion-templated polyacrylamide beads as the sacrificial exotemplates for efficient photodegradation of dyes/microbes.
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35
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Zhang Y, Chen J, Hua L, Li S, Zhang X, Sheng W, Cao S. High photocatalytic activity of hierarchical SiO 2@C-doped TiO 2 hollow spheres in UV and visible light towards degradation of rhodamine B. JOURNAL OF HAZARDOUS MATERIALS 2017; 340:309-318. [PMID: 28719847 DOI: 10.1016/j.jhazmat.2017.07.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 07/02/2017] [Accepted: 07/07/2017] [Indexed: 06/07/2023]
Abstract
Ongoing research activities are targeted to explore high photocatalytic activity of TiO2-based photocatalysts for the degradation of environmental contaminants under UV and visible light irradiation. In this work, we devise a facile, cost-effective technique to in situ synthesize hierarchical SiO2@C-doped TiO2 (SCT) hollow spheres for the first time. This strategy mainly contains the preparation of monodisperse cationic polystyrene spheres (CPS), sequential deposition of inner SiO2, the preparation of the sandwich-like CPS@SiO2@CPS particles, and formation of outer TiO2. After the one-step removal of CPS templates by calcination at 450°C, hierarchical SiO2@C-doped TiO2 hollow spheres are in situ prepared. The morphology, hierarchical structure, and properties of SCT photocatalyst were characterized by TEM. SEM, STEM Mapping, BET, XRD, UV-vis spectroscopy, and XPS. Results strongly confirm the carbon doping in the outer TiO2 lattice of SCT hollow spheres. When the as-synthesized SCT hollow spheres were employed as a photocatalyst for the degradation of Rhodamine B under visible-light and ultraviolet irradiation, the SCT photocatalyst exhibits a higher photocatalytic activity than commercial P25, effectively overcoming the limitations of poorer UV activity for many previous reported TiO2-based photocatalysts due to doping.
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Affiliation(s)
- Ying Zhang
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Juanrong Chen
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Li Hua
- College of Chemical Engineering, Yangzhou Polytechnic Institute, Yangzhou 225127, China
| | - Songjun Li
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Xuanxuan Zhang
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Weichen Sheng
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Shunsheng Cao
- Institute of Polymer Materials, School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China.
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36
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Chibac AL, Buruiana T, Melinte V, Buruiana EC. Photocatalysis applications of some hybrid polymeric composites incorporating TiO 2 nanoparticles and their combinations with SiO 2/Fe 2O 3. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2017; 8:272-286. [PMID: 28243566 PMCID: PMC5301952 DOI: 10.3762/bjnano.8.30] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/12/2017] [Indexed: 06/06/2023]
Abstract
Polymer nanocomposites containing titanium oxide nanoparticles (TiO2 NPs) combined with other inorganic components (Si-O-Si or/and γ-Fe2O3) were prepared by the dispersion of premade NPs (nanocrystalline TiO2, TiO2/SiO2, TiO2/Fe2O3, TiO2/SiO2/Fe2O3) within a photopolymerizable urethane dimethacrylate (polytetrahydrofuran-urethane dimethacrylate, PTHF-UDMA). The physicochemical characterization of nanoparticles and hybrid polymeric composites with 10 wt % NPs (S1-S4) was realized through XRD, TEM and FTIR analyses. The mean size (10-30 nm) and the crystallinity of the NPs varied as a function of the inorganic constituent. The catalytic activity of these hybrid films was tested for the photodegradation of phenol, hydroquinone and dopamine in aqueous solution under UV or visible-light irradiation. The best results were obtained for the films with TiO2/Fe2O3 or TiO2/SiO2/Fe2O3 NPs. The degradation of the mentioned model pollutants varied between 71% and 100% (after 250 min of irradiation) depending on the composition of the hybrid film tested and the light applied (UV-visible light). Also, it was established that such hybrid films can be reused at least for five cycles, without losing too much of the photocatalytic efficiency (ca. 7%). These findings could have implications in the development of new nanocatalysts.
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Affiliation(s)
- Andreea Laura Chibac
- Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Tinca Buruiana
- Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Violeta Melinte
- Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
| | - Emil C Buruiana
- Petru Poni Institute of Macromolecular Chemistry, 41 A Gr. Ghica Voda Alley, 700487 Iasi, Romania
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37
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Highly sensitive surface-enhanced Raman scattering detection of hexavalent chromium based on hollow sea urchin-like TiO2@Ag nanoparticle substrate. Biosens Bioelectron 2017; 87:187-194. [DOI: 10.1016/j.bios.2016.08.036] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 07/27/2016] [Accepted: 08/13/2016] [Indexed: 01/01/2023]
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38
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Zha R, Shi T, Zhang Z, Xu D, Jiang T, Zhang M. Quasi-reverse-emulsion-templated approach for a facile and sustainable environmental remediation for cadmium. RSC Adv 2017. [DOI: 10.1039/c6ra26949d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Highly efficient and sustainable decontamination of heavy metal ions is achieved by nanostructured hierarchical hollow α-Fe2O3 chestnut buds and nests.
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Affiliation(s)
- Ruhua Zha
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Tuo Shi
- Laboratory of Solid State Ionics
- School of Materials Science and Engineering
- Huazhong University of Science and Technology
- Wuhan 430074
- P. R. China
| | - Zongwen Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Dongli Xu
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Tongwu Jiang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- P. R. China
| | - Min Zhang
- Henan Collaborative Innovation Center for Energy-Saving Building Materials
- Xinyang Normal University
- Xinyang 464000
- P. R. China
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39
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Lv W, Liu Z, Lan J, Liu Z, Mi W, Lei J, Wang L, Liu Y, Zhang J. Visible-light-induced reduction of hexavalent chromium utilizing cobalt phosphate (Co-Pi) sensitized inverse opal TiO2as a photocatalyst. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01748k] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Cobalt phosphate (Co-Pi) modified inverse opal TiO2was developed and applied for efficient photocatalytic reduction of Cr(vi).
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Affiliation(s)
- Weijia Lv
- 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
| | - Zhihang 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
| | - Jinjing Lan
- 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
| | - Ziyu 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
| | - Wenxin Mi
- 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
| | - 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
| | - Lingzhi Wang
- Key Lab for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - 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 and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- Suzhou Jukang New Materials Co. Ltd of Science and Technology
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40
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Zhong Y, Qiu X, Chen D, Li N, Xu Q, Li H, He J, Lu J. Flexible Electrospun Carbon Nanofiber/Tin(IV) Sulfide Core/Sheath Membranes for Photocatalytically Treating Chromium(VI)-Containing Wastewater. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28671-28677. [PMID: 27723961 DOI: 10.1021/acsami.6b10241] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report an efficient method for fabricating flexible membranes of electrospun carbon nanofiber/tin(IV) sulfide (CNF@SnS2) core/sheath fibers. CNF@SnS2 is a new photocatalytic material that can be used to treat wastewater containing high concentrations of hexavalent chromium (Cr(VI)). The hierarchical CNF@SnS2 core/sheath membranes have a three-dimensional macroporous architecture. This provides continuous channels for the rapid diffusion of photoelectrons generated by SnS2 nanoparticles under visible light irradiation. The visible light (λ > 400 nm) driven photocatalytic properties of CNF@SnS2 are evaluated by the reduction of water-soluble Cr(VI). CNF@SnS2 exhibits high visible light-driven photocatalytic activity because of its low band gap of 2.34 eV. Moreover, CNF@SnS2 exhibits good photocatalytic stability and excellent cycling stability. Under visible light irradiation, the optimized CNF@SnS2 membranes exhibit a high rate of degradation of 250 mg/L of aqueous Cr(VI) and can completely degrade the Cr(VI) within 90 min.
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Affiliation(s)
- Yunlei Zhong
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Xun Qiu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Dongyun Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Najun Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Qingfeng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Hua Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Jinghui He
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China
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41
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Advances in Magnetically Separable Photocatalysts: Smart, Recyclable Materials for Water Pollution Mitigation. Catalysts 2016. [DOI: 10.3390/catal6060079] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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42
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Liu S, Regulacio MD, Tee SY, Khin YW, Teng CP, Koh LD, Guan G, Han MY. Preparation, Functionality, and Application of Metal Oxide-coated Noble Metal Nanoparticles. CHEM REC 2016; 16:1965-90. [DOI: 10.1002/tcr.201600028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Indexed: 01/04/2023]
Affiliation(s)
- Shuhua Liu
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Michelle D. Regulacio
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Si Yin Tee
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Yin Win Khin
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Choon Peng Teng
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Leng Duei Koh
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
| | - Guijian Guan
- Institute of Intelligent Machines Chinese Academy of Sciences; Hefei 230031 P. R. China
| | - Ming-Yong Han
- Institute of Materials Research and Engineering; 2 Fushionpolis Way Innovis, #08-03Singapore 138634 Singapore
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43
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Leem YC, Seo O, Jo YR, Kim JH, Chun J, Kim BJ, Noh DY, Lim W, Kim YI, Park SJ. Titanium oxide nanotube arrays for high light extraction efficiency of GaN-based vertical light-emitting diodes. NANOSCALE 2016; 8:10138-10144. [PMID: 27121775 DOI: 10.1039/c6nr00503a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
TiO2 nanotube (NT) arrays were fabricated on the surface of n-GaN through a liquid-phase conversion process using ZnO nanorods (NRs) as a template for high-efficiency InGaN/GaN multiple quantum well (MQW) vertical light-emitting diodes (VLEDs). The optical output power of the VLEDs with TiO2 NTs was remarkably enhanced by 23% and 189% at an injection current of 350 mA compared to those of VLEDs with ZnO NRs and planar VLEDs, respectively. The large enhancement in optical output is attributed to a synergistic effect of efficient light injection from the n-GaN layer of the VLED to TiO2 NTs because of the well-matched refractive indices and superior light extraction into air at the end of the TiO2 NTs. Light propagation along various configurations of TiO2 NTs on the VLEDs was investigated using finite-difference time domain simulations and the results indicated that the wall thickness of the TiO2 NTs should be maintained close to 20 nm for superior light extraction from the VLEDs.
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Affiliation(s)
- Young-Chul Leem
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea.
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44
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Zhao Y, Tao C, Xiao G, Wei G, Li L, Liu C, Su H. Controlled synthesis and photocatalysis of sea urchin-like Fe3O4@TiO2@Ag nanocomposites. NANOSCALE 2016; 8:5313-26. [PMID: 26884248 DOI: 10.1039/c5nr08624h] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Based on the synergistic photocatalytic activities of nano-sized TiO2 and Ag, as well as the magnetic properties of Fe3O4, a sea urchin-like Fe3O4@TiO2@Ag nanocomposite (Fe3O4@TiO2@Ag NCs) is controllably synthesized with tunable cavity size, adjustable shell layer of TiO2 nanofiber, higher structural stability and larger specific surface area. Here, Fe3O4@TiO2@Ag NCs are obtained with Fe3O4 as the core and nanofiber TiO2/Fe3O4/Ag nanoheterojunctions as the shell; and Ag nanoparticles with diameter of approximately 4 nm are loaded both on TiO2 nanofibers and inside the cavities of sea urchin-like Fe3O4@TiO2 nanocomposites uniformly. Ag nanoparticles lead to the production of more photogenerated charges in the TiO2/Fe3O4/Ag heterojunction via LSPR absorption, and enhance the band-gap absorption of TiO2, while the Fe3O4 cocatalyst provides the active sites for oxygen reduction by the effective transfer of photogenerated electrons to oxygen. So the photocatalytic performance is improved due to the synergistic effect of TiO2/Fe3O4/Ag nanoheterojunctions. As photocatalysts under UV and visible irradiation, the as-synthesized nanocomposites display enhanced photocatalytic and recycling properties for the degradation of ampicillin. Moreover, they present better broad-spectrum antibiosis under visible irradiation. The enhanced photocatalytic activity and excellent chemical stability, in combination with the magnetic recyclability, makes this multifunctional nanostructure a promising candidate for antibiosis and remediation in aquatic environmental contamination in the future.
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Affiliation(s)
- Yilin Zhao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Chengran Tao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Gang Xiao
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Guipeng Wei
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Linghui Li
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Changxia Liu
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
| | - Haijia Su
- Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology (BUCT), 15 BeiSanhuan East Road, ChaoYang District, Beijing, 100029, P. R. China.
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45
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Liu Y, Ma YJ, Liu CY, Zhang ZY, Yang WD, Nie SD, Zhou XH. The effective removal of Cr(vi) ions by carbon dot–silica hybrids driven by visible light. RSC Adv 2016. [DOI: 10.1039/c6ra13593e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A carbon dot–silica hybrid with a high dosage of CDs demonstrated significant visible light absorption, a large Cr(vi) adsorption capacity and good photocatalytic activity for the reduction of Cr(vi) in visible light.
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Affiliation(s)
- Yun Liu
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Yu-jie Ma
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Chun-yan Liu
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Zhi-ying Zhang
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Wen-dong Yang
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Shi-dong Nie
- Key Laboratory of Photochemical Conversion and Optoelectonic Materials
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- People's Republic China
| | - Xue-hua Zhou
- Environment Research Institute
- Shandong University
- Jinan
- P. R. China
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46
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Abstract
AbstractOne of the main public concerns is the aquatic habitat and its corresponding issues because of the incessant contamination of the ecological water systems. In recent years, research attention has been focused on processes that lead to an improved oxidative degradation of organic pollutants. Therefore, semiconductor photocatalysis technology has aroused scientists’ interest in environmental remediation. Although several semiconductors have proven to be ideal candidates for the treatment of water pollution, the efficient separation and recycling of this fine-powdered photocatalyst is still a scientific problem when applied in practice, including separation process, selectivity, and dispersion. A photocatalyst with magnetic properties allows the use of the technique of magnetic separation, which is one of the most effective and simple methods for removing suspended solids from wastewater without the need for further separation processes. The magnetic photocatalyst allows its use as a suspended material, providing the advantage to have a high surface area for reaction. This review highlights the advantages and disadvantages of current photocatalyst systems. Moreover, it focuses on hybrid magnetic photocatalysts, including metals and nonmetals, metal oxides, carbon-based materials, and ceramics.
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47
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Jiang YN, Liu BD, Yang WJ, Yang B, Liu XY, Zhang XL, Mohsin MA, Jiang X. New strategy for the in situ synthesis of single-crystalline MnWO4/TiO2photocatalysts for efficient and cyclic photodegradation of organic pollutants. CrystEngComm 2016. [DOI: 10.1039/c5ce02445e] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Zhang J, Chen H, Chen Z, He J, Shi W, Liu D, Chi H, Cui F, Wang W. Microstructured macroporous adsorbent composed of polypyrrole modified natural corncob-core sponge for Cr(vi) removal. RSC Adv 2016. [DOI: 10.1039/c6ra07687d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A high-performance, cost-effective and spongy adsorbent is rationally designed for Cr(vi) removal based on polypyrrole modified corncob-core natural microsheets.
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Affiliation(s)
- Jianqiao Zhang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Huan Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Zi Chen
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Jiaojie He
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wenxin Shi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Dongmei Liu
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Huizhong Chi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
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49
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Abdullah H, Kuo DH. Facile Synthesis of n-type (AgIn)(x)Zn(2(1-x))S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium. ACS APPLIED MATERIALS & INTERFACES 2015; 7:26941-26951. [PMID: 26575792 DOI: 10.1021/acsami.5b09647] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
n-type (AgIn)(x)Zn(2(1-x))S2/p-type Ag2S nanocomposites with 10%, 20%, and 30% Ag2S loading were successfully synthesized via the simple solvothermal and sol gel methods. The as-prepared nanocomposites were characterized, and their visible light photocatalytic reductions were tested for detoxification of hexavalent chromium (Cr(VI)). The results showed only 20 mg of the as-prepared nanocomposites could reduce 100 mL of 20 ppm potassium dichromate by almost 100% in less than 90 min without adding any hole scavenger agents and pH adjustment (pH = 7). The good photocatalytic reduction was related to the narrower bandgap of (AgIn)(x)Zn(2(1-x))S2 solid solution because of the hybridized orbitals of Ag, In, Zn, and S and low recombination rate of photogenerated electron and hole pairs due to the effectiveness of p-type Ag2S and n-type (AgIn)(x)Zn(2(1-x))S2 nanoheterojunctions. This work not only gives a contribution to the creation of visible light photocatalysis for wide-bandgap semiconductors, but also extends our technological viewpoints in designing highly efficient metal sulfide photocatalyst. To the best of our knowledge, this work is the first finding of a high photocatalytic reduction of hexavalent chromium under visible light illumination by simultaneously using both concepts of p-n nanoheterojunction and solid solution in our photocatalyst design. In this present work, these concepts were used to replace the use of hole scavenger agents, which were commonly used by many other works to retard the recombination rate of photoinduced electron and hole pairs for photodegradation of hexavalent chromium.
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Affiliation(s)
- Hairus Abdullah
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology , No. 43, Sec. 4, Keelung Road, Taipei 10607, Taiwan
| | - Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology , No. 43, Sec. 4, Keelung Road, Taipei 10607, Taiwan
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Gao M, Zhu L, Ong WL, Wang J, Ho GW. Structural design of TiO2-based photocatalyst for H2 production and degradation applications. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00879d] [Citation(s) in RCA: 189] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review aims to provide a comprehensive and contemporary overview, as well as a guide of the development of new generation TiO2 based photocatalysts via structural design for improved solar energy conversion technologies.
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Affiliation(s)
- Minmin Gao
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Liangliang Zhu
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Wei Li Ong
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Jing Wang
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering
- National University of Singapore
- Singapore 117583
- Engineering Science Programme
- National University of Singapore
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