1
|
Wang H, Hu Z, Liu S, Zhang X, Sun Y, Dong F. Dissecting the Photochemical Reactivity of Metal Ions during Atmospheric Nitrate Transformations on Photoactive Mineral Dust. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 38959497 DOI: 10.1021/acs.est.3c10192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
Dissecting the photochemical reactivity of metal ions is a significant contribution to understanding secondary pollutant formation, as they have a role to be reckoned with atmospheric chemistry. However, their photochemical reactivity has received limited attention within the active nitrogen cycle, particularly at the gas-solid interface. In this study, we delve into the contribution of magnesium ion (Mg2+) and ferric ion (Fe3+) to nitrate decomposition on the surface of photoactive mineral dust. Under simulated sunlight irradiation, the observed NOX production rate differs by an order of magnitude in the presence of Mg2+ (6.02 × 10-10 mol s-1) and Fe3+ (2.07 × 10-11 mol s-1). The markedly decreased fluorescence lifetime induced by Mg2+ and the change in the valence of Fe3+ revealed that Mg2+ and Fe3+ significantly affect the concentration of nitrate decomposition products by distinct photochemical reactivity with photogenerated electrons. Mg2+ promotes NOX production by accelerating charge transfer, while Fe3+ hinders nitrate decomposition by engaging in a redox cyclic reaction with Fe2+ to consume photogenerated carriers continuously. Furthermore, when Fe3+ coexists with other metal ions (e.g., Mg2+, Ca2+, Na+, and K+) and surpasses a proportion of approximately 12%, the photochemical reactivity of Fe3+ tends to be dominant in depleting photogenerated electrons and suppressing nitrate decomposition. Conversely, below this threshold, the released NOX concentration increases sharply as the proportion of Fe3+ decreases. This research offers valuable insights into the role of metal ions in nitrate transformation and the generation of reactive nitrogen species, contributing to a deep understanding of atmospheric photochemical reactions.
Collapse
Affiliation(s)
- Hong Wang
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Zehui Hu
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shujun Liu
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Xin Zhang
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Fan Dong
- Research Center for Carbon-Neutral Environmental & Energy Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| |
Collapse
|
2
|
Frątczak EZ, Balcerzak J, Rogala M. Optoelectronic Properties of Cold Plasma-Deposited, Oxidized Sn-C Thin Films. MATERIALS (BASEL, SWITZERLAND) 2024; 17:314. [PMID: 38255482 PMCID: PMC10817613 DOI: 10.3390/ma17020314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/29/2023] [Accepted: 01/02/2024] [Indexed: 01/24/2024]
Abstract
We report on investigating the structural and electronic properties of semiconducting and insulating layers produced in a process resembling percolation in a unique cold plasma fabrication method (plasma-enhanced chemical vapor deposition-PECVD). Amorphous carbon-tin films (Sn-C) produced from tetramethyl tin (TMT) with an acoustic-frequency glow discharge in a three-electrode reactor were investigated. The layers, after air exposure, oxidized to SnO2/Sn-C. Depending on the coupling capacitance applied to the plasma reactor, the films could be obtained in the form of an amorphous semiconductor or an amorphous insulator. We assume that the semiconductor consists of an internal network of channels auto-organized during deposition. The insulator does not demonstrate any internal structure features. An investigation on conductive filaments creating low-dimensional (LD) nanojunctions in the semiconductor and the location of energetic levels in the insulator was performed. The main parameters of the electronic band structure of the insulating film, such as the transport gap EG (5.2 eV), optical gap Eopt (3.1 eV), electron affinity Χ (2.1 eV), and ionization potential J (7.3 eV), were determined. We have demonstrated a simple approach for developing a catalyst candidate consisting of amorphous semiconductor-insulator nanojunctions for (photo)catalytic hydrogen evolution or CO2 reduction.
Collapse
Affiliation(s)
- Ewelina Zofia Frątczak
- Department of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, Poland
| | - Jacek Balcerzak
- Department of Molecular Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, Wólczańska 213, 93-005 Lodz, Poland
| | - Maciej Rogala
- Sub-Department of Physics and Technology of Nanometric Structures, Faculty of Physics and Applied Informatics, University of Lodz, Pomorska 149/153, 90-236 Lodz, Poland
| |
Collapse
|
3
|
Wang S, Wen J, Mu L, Hu X, Feng R, Jia Y. Highly active complexes of pyrite and organic matter regulate arsenic fate. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131967. [PMID: 37421861 DOI: 10.1016/j.jhazmat.2023.131967] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 07/10/2023]
Abstract
Arsenic (As) presents high toxicity and strong carcinogenicity, and its health risks are regulated by its oxidation state and speciation. As can form complexes with the surface of minerals or organic matter through adsorption, affecting its toxicity and bioavailability. However, the regulation effect of the interaction of coexisting minerals and organic matter on As fate remains largely unknown. Here, we discovered that minerals (e.g., pyrite) and organic matter (e.g., alanyl glutamine, AG) can form pyrite-AG complexes, promoting As(III) oxidation under simulated solar irradiation. The formation of pyrite-AG was explored in terms of the interaction of surface oxygen atoms, electron transfer and crystal surface changes. From the perspective of atoms and molecules, pyrite-AG showed more oxygen vacancies, stronger reactive oxygen species (ROS) and a higher electron transport capacity than pyrite alone. Compared with pyrite, pyrite-AG effectively promoted the conversion of highly toxic As(III) to less toxic As(V) due to the enhanced photochemical properties. Moreover, quantification and capture of ROS confirmed that hydroxyl radicals (•OH) played an important role in As(III) oxidation in the pyrite-AG and As(III) system. Our results provide previously unidentified perspectives on the effects and chemical mechanisms of highly active complexes of mineral and organic matter on As fate and provide new insights into the risk assessment and control of As pollution.
Collapse
Affiliation(s)
- Shuting Wang
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China; Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Jingyu Wen
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China
| | - Li Mu
- Tianjin Key Laboratory of Agro-Environment and Product Safety, Key Laboratory for Environmental Factors Controlling Agro-Product Quality Safety (Ministry of Agriculture and Rural Affairs), Institute of Agro-Environmental Protection, Ministry of Agriculture and Rural Affairs, 300191 Tianjin, China.
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Ruihong Feng
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| | - Yuying Jia
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, 300350 Tianjin, China
| |
Collapse
|
4
|
Chen Q, Gao M, Yu M, Zhang T, Wang J, Bi J, Dong F. Efficient photo-degradation of antibiotics by waste eggshells derived AgBr-CaCO3 heterostructure under visible light. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
|
5
|
Sang T, Zhong Y, Jiang S, Xue XG, Hu CH, Wang DH, Ye JC, Wei NN, Liu H. EDTA promoted Cr(VI) reduction in semiconductor/insulator photocatalyst: Performance, mechanistic insight and DFT calculation. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
|
6
|
Wang WY, Sang T, Zhong Y, Hu CH, Wang DH, Ye JC, Wei NN, Liu H. Surfactant-Modified CdS/CdCO 3 Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3923. [PMID: 36364699 PMCID: PMC9657923 DOI: 10.3390/nano12213923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
The surfactant modification of catalyst morphology is considered as an effective method to improve photocatalytic performance. In this work, the visible-light-driven composite photocatalyst was obtained by growing CdS nanoparticles in the cubic crystal structure of CdCO3, which, after surfactant modification, led to the formation of CdCO3 elliptical spheres. This reasonable composite-structure-modification design effectively increased the specific surface area, fully exposing the catalytic-activity check point. Cd2+ from CdCO3 can enter the CdS crystal structure to generate lattice distortion and form hole traps, which productively promoted the separation and transfer of CdS photogenerated electron-hole pairs. The prepared 5-CdS/CdCO3@SDS exhibited excellent Cr(VI) photocatalytic activity with a reduction efficiency of 86.9% within 30 min, and the reduction rate was 0.0675 min-1, which was 15.57 and 14.46 times that of CdS and CdCO3, respectively. Finally, the main active substances during the reduction process, the photogenerated charge transfer pathways related to heterojunctions and the catalytic mechanism were proposed and analyzed.
Collapse
Affiliation(s)
- Wen-Yi Wang
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Tian Sang
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Yan Zhong
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
| | - Chao-Hao Hu
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
| | - Dian-Hui Wang
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
- Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
| | - Jun-Chen Ye
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Ni-Ni Wei
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| | - Hao Liu
- School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
| |
Collapse
|
7
|
Kang Z, Liu Q, Zhang X, Zhang X, Yang DP, Chen X. Designing waste Bioresource-derived value-added Nanohybrids for efficient photocatalysis water treatment. CHEMOSPHERE 2022; 307:135789. [PMID: 35872059 DOI: 10.1016/j.chemosphere.2022.135789] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/16/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Although photocatalysis with ultraviolet-visible (UV-vis) light has made considerable advances, it is limited by the low efficiency of UV-vis energy conversion. To overcome this problem, UV-vis light can be replaced with near-infrared (NIR) light. Herein, we coupled eggshell-derived CaCO3 with a NIR-absorbing CuSe semiconductor and fabricated an insulator-based heterojunction structure. In application case studies of 4-nitrophenol (4-NP) and bacteria, the nanocomposites showed enhanced photocatalysis activity under NIR light induction. A first-principles calculation indicated that photoexcited electrons could transfer from the conduction band of CuSe to the conduction band of CaCO3. The main reactive species generated by the photocatalysis were ·CO3-, and ·OH free radicals. The antibacterial mechanisms of photocatalysis on the cell permeability and DNA layers of the bacterial cells were also revealed. Besides providing novel perspectives and mechanistic understanding of the fabrication of NIR light-driven photocatalysts, this study demonstrates the valorization of eggshell bio-wastes in environmental remediation.
Collapse
Affiliation(s)
- Zewen Kang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, Fujian Province, PR China
| | - Qiaoling Liu
- The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362400, Fujian Province, PR China
| | - Xiaohui Zhang
- Institute of Molecular Plus, Tianjin University, Tianjin, 300072, Hebei Province, PR China
| | - Xiaoyan Zhang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, Fujian Province, PR China
| | - Da-Peng Yang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, Fujian Province, PR China.
| | - Xiaofang Chen
- The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362400, Fujian Province, PR China
| |
Collapse
|
8
|
Liu L, Ouyang P, Li Y, Duan Y, Dong F, Lv K. Insight into the mechanism of deep NO photo-oxidation by bismuth tantalate with oxygen vacancies. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129637. [PMID: 35901631 DOI: 10.1016/j.jhazmat.2022.129637] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 07/10/2022] [Accepted: 07/17/2022] [Indexed: 06/15/2023]
Abstract
Deeply photocatalytic oxidation of nitrogen oxides is still difficult to achieve, mainly limited by few intrinsic active sites and inefficient carrier separation of photocatalysts. Accordingly, we develop a simple room temperature tactic to introduce oxygen vacancies (OVs) into Bi3TaO7 (BTO). Based on solid experimental and DFT theoretical supports, we explore the mechanism of NO removal over OVs decorated BTO (OVs-BTO). OVs can not only alter the distribution of local electrons to result in the formation of a fast charge transfer channel between OVs and the adjacent Ta atoms, which improves the transport rate of photogenerated carriers; but also function as active sites to adsorb small molecules (NO, O2 and H2O), which being activated and positively drive the NO oxidation reaction. In order to investigate a possible reaction path, a combination of in-situ DRIFTS and simulated Gibbs free energy reveals that the intermediate products of OVs-BTO are helpful to promote the deep oxidation of NO to NO3-, while pristine BTO is more likely to produce NO2 intermediate toxic by-products, which greatly hinders the deep photocatalytic oxidation of NO. This work provides insights into the role of OVs in photocatalysts, and also points out a guideline for the mechanism of semiconductor photocatalysts in eliminating gaseous pollutants.
Collapse
Affiliation(s)
- Li Liu
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Ping Ouyang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yuhan Li
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China.
| | - Youyu Duan
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fan Dong
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China; Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Kangle Lv
- Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central Minzu University, Wuhan 430074, China.
| |
Collapse
|
9
|
Tan T, Wang X, Zhou X, Ma H, Fang R, Geng Q, Dong F. Highly active Cs 2SnCl 6/C 3N 4 heterojunction photocatalysts operating via interfacial charge transfer mechanism. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129694. [PMID: 36104916 DOI: 10.1016/j.jhazmat.2022.129694] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/19/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
In this study, a novel lead-free perovskite heterojunction Cs2SnCl6/C3N4 composite was constructed and applied for photocatalytic NO purification. After design optimization, the Cs2SnCl6/C3N4 heterojunction exhibit excellent and stable photocatalytic NO purification ability under visible-light irradiation, which is significantly better than pristine Cs2SnCl6 and C3N4. Combined in-situ DRIFTS and electron spin resonance spin-trapping, the mechanism of Cs2SnCl6/C3N4 photocatalytic NO removal was revealed. Under visible-light irradiation, the photo-generated electrons on the conduction band of C3N4 would spontaneously migrate to the CB of Cs2SnCl6, leaving holes (h+) on the valence band of C3N4, contributing to efficiently segregated charge carriers and improved photocatalytic NO purification. Density functional theory calculations also revealed the directional electron transfer at the C3N4 and Cs2SnCl6 interface, in which the charge was migrated from C3N4 to Cs2SnCl6 induced by the internal electric field. This research sheds fresh light on the fabrication of Cs2SnCl6/C3N4 heterojunctions as well as its effective interfacial charge separation.
Collapse
Affiliation(s)
- Tianqi Tan
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xuemei Wang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xi Zhou
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Hao Ma
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Ruimei Fang
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China
| | - Qin Geng
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China.
| | - Fan Dong
- College of Environment and Resources, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, China; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China; State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| |
Collapse
|
10
|
Farrera-Borjas IA, Tzompantzi F, Sánchez-Cantú M, Barrera-Rodríguez A, Tzompantzi-Flores C, Gómez R, Santolalla-Vargas C. gPhotocatalytic mineralization of phenol by Sn-modified calcites. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
11
|
Zhang X, Han L, Chen H, Wang S. Direct catalytic nitrogen oxide removal using thermal, electrical or solar energy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.07.034] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
12
|
Yang W, Ren Q, Zhong F, Wang Y, Wang J, Chen R, Li J, Dong F. Promotion mechanism of -OH group intercalation for NOx purification on BiOI photocatalyst. NANOSCALE 2021; 13:20601-20608. [PMID: 34874391 DOI: 10.1039/d1nr05363a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Bismuth oxyiodide (BiOI) is a traditional layered oxide photocatalyst that performs in a wide visible-light absorption band, owing to its appropriate band structure. Nevertheless, its photocatalytic efficiency is immensely inhibited due to the serious recombination of photogenerated charge carriers. Herein, this great challenge is addressed via a new strategy of intralayer modification by -OH groups in BiOI, which leads to enhancement of the reactants' activation capacity to promote photocatalytic activity and generate more active species. Furthermore, analysis via a combination of experimental and theoretical methods revealed that the -OH group-functionalized samples reduce the energy barriers for conversion of the main intermediate (NO2), which is easily transformed to NO2-, thus accelerating the oxidation of NO to the final product (NO3-). This study gives insight into NO oxidation, improving the photocatalytic efficiency, and mastering the photocatalysis reaction mechanism to curb air pollution.
Collapse
Affiliation(s)
- Weiping Yang
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Qin Ren
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Fengyi Zhong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Yanxia Wang
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Jielin Wang
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Ruimin Chen
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
| | - Jieyuan Li
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China
| | - Fan Dong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou 313000, China
| |
Collapse
|
13
|
Chaulagain N, Alam KM, Kumar P, Kobryn AE, Gusarov S, Shankar K. Zinc phthalocyanine conjugated cellulose nanocrystals for memory device applications. NANOTECHNOLOGY 2021; 33:055703. [PMID: 34633304 DOI: 10.1088/1361-6528/ac2e78] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
We present the electrical properties of zinc phthalocyanine covalently conjugated to cellulose nanocrystals (CNC@ZnPc). Thin films of CNC@ZnPc sandwiched between two gold electrodes showed pronounced hysteresis in their current-voltage characteristics. The layered metal-organic-metal sandwich devices exhibit distinct high and low conductive states when bias is applied, which can be used to store information. Density functional theory results confirmed wave function overlap between CNC and ZnPc in CNC@ZnPc, and helped visualize the lowest (lowest unoccupied molecular orbital) and highest molecular orbitals (highest occupied molecular orbital) in CNC@ZnPc. These results pave the way forward for all-organic electronic devices based on low cost, earth abundant CNCs and metallophthalocyanines.
Collapse
Affiliation(s)
- Narendra Chaulagain
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Kazi M Alam
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
- Nanotechnology Research Centre, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, AB T6G 2M9, Canada
| | - Pawan Kumar
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Alexander E Kobryn
- Nanotechnology Research Centre, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, AB T6G 2M9, Canada
| | - Sergey Gusarov
- Nanotechnology Research Centre, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, AB T6G 2M9, Canada
| | - Karthik Shankar
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| |
Collapse
|
14
|
Jourshabani M, Lee BK. Unmasking the Role of an Amorphous/Amorphous Interface and a Crystalline/Amorphous Interface in the Transition of Charge Carriers on the CN/SiO 2/WO 3 Photocatalyst. ACS APPLIED MATERIALS & INTERFACES 2021; 13:31785-31798. [PMID: 34223765 DOI: 10.1021/acsami.1c10307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Making heterojunctions between semiamorphous carbon nitride (CN) and other well-matched semiconductors (or even insulators) can solve many photocatalytic problems such as the recombination of charge carriers. However, many researchers encounter intrinsic problems including the lack of detailed information on contact boundaries in their heterojunctions, particularly in the amorphous/amorphous interface. In addition, the roles of contact boundaries in the photocatalytic mechanisms of many heterojunctions are still obscure. This study synthesized a novel CN/SiO2/WO3 photocatalyst having two different contact features by constructing an amorphous/amorphous (CN/SiO2) interface and a crystalline/amorphous (WO3/CN) interface to provide deep insights into heterojunction interfaces. SiO2 plays an exceptional role as a major component in the separation and migration of charge carriers. It not only modifies the texture but also transfers electrons. Surprisingly, the amorphous/amorphous interface shows an unpredicted capability for decreasing the recombination of electron-hole pairs. Based on capturing experiments and photoluminescence investigations, the amorphous/amorphous interface is unprecedently present in the production of hydroxyl radicals, while the crystalline/amorphous interface gives more superoxide radicals. This work provides a platform that opens a new perspective on the selection of mutual photocatalysts. It extends boundaries of conventional heterojunctions.
Collapse
Affiliation(s)
- Milad Jourshabani
- Department of Civil and Environment Engineering, University of Ulsan, Daehakro 93, Namgu, Ulsan 680-749, Republic of Korea
| | - Byeong-Kyu Lee
- Department of Civil and Environment Engineering, University of Ulsan, Daehakro 93, Namgu, Ulsan 680-749, Republic of Korea
| |
Collapse
|
15
|
Cai J, Wei H, Zhang Y, Cai R, Zhang X, Wang Y, Liu J, Tan HH, Xie T, Wu Y. Designed Construction of SrTiO 3 /SrSO 4 /Pt Heterojunctions with Boosted Photocatalytic H 2 Evolution Activity. Chemistry 2021; 27:7300-7306. [PMID: 33554407 DOI: 10.1002/chem.202100101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Indexed: 02/02/2023]
Abstract
Efficient separation of photogenerated electron-hole pairs is a crucial factor for high-performance photocatalysts. Effective electron-hole separation and migration could be achieved by heterojunctions with suitable band structures. Herein, a porous SrTiO3 /SrSO4 heterojunction is prepared by a sol-gel method at room temperature followed by an annealing process. XRD characterization suggests high crystallinity of the heterostructure. A well-defined interface between the two phases is confirmed by high-resolution (HR)TEM. The photocatalytic H2 evolution productivity of the SrTiO3 /SrSO4 heterojunction with Pt as co-catalyst reaches 396.82 μmol g-1 h-1 , which is 16 times higher than that of SrTiO3 /Pt. The boosted photocatalytic activity of SrTiO3 /SrSO4 /Pt can be ascribed to the presence of SrSO4 , which promotes the transfer and migration of photogenerated carriers by forming the heterojunction and porous structure, which provides a large amount of active sites. This novel porous heterostructure brings new ideas for the development of high-efficiency photocatalysts for H2 release.
Collapse
Affiliation(s)
- Jingyi Cai
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Haoshan Wei
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Yong Zhang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Rui Cai
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Xueru Zhang
- Instrumental Analysis Center, Hefei University of Technology, Hefei, 230009, China
| | - Yan Wang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Jiaqin Liu
- Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei, 230009, Anhui, China
| | - Hark Hoe Tan
- China International S&T Cooperation Base for Advanced Energy and Environmental Materials, Hefei, 230009, Anhui, China.,Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT, 2601, Australia
| | - Ting Xie
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| | - Yucheng Wu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, Anhui, China.,Key Laboratory of Advanced Functional Materials and Devices of Anhui Province, Hefei, 230009, China
| |
Collapse
|
16
|
Vinoth S, Rajaitha PM, Pandikumar A. Modulating photoelectrochemical water splitting performance by constructing a type-II heterojunction between g-C3N4 and BiOI. NEW J CHEM 2021. [DOI: 10.1039/d0nj05384h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
g-C3N4/BiOI type-II heterojunction prepared by ultrasonically aided hydrothermal method exhibits high stability during PEC water splitting for up to 6000 s at 1.23 V vs. RHE.
Collapse
Affiliation(s)
- S. Vinoth
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
- Ghaziabad – 201002
| | - P. Mary Rajaitha
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
| | - A. Pandikumar
- Electro Organic and Materials Electrochemistry Division, CSIR-Central Electrochemical Research Institute
- Karaikudi – 630003
- India
- Academy of Scientific and Innovative Research (AcSIR)
- Ghaziabad – 201002
| |
Collapse
|
17
|
Liu H, Yang C, Jin X, Zhong J, Li J. One-pot hydrothermal synthesis of MXene Ti3C2/TiO2/BiOCl ternary heterojunctions with improved separation of photoactivated carries and photocatalytic behavior toward elimination of contaminants. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125239] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Wu H, Yuan C, Chen R, Wang J, Dong F, Li J, Sun Y. Mechanisms of Interfacial Charge Transfer and Photocatalytic NO Oxidation on BiOBr/SnO 2 p-n Heterojunctions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43741-43749. [PMID: 32867469 DOI: 10.1021/acsami.0c12628] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this work, hydrothermally prepared p-n heterojunction BiOBr/SnO2 photocatalysts were applied to eliminate NO in visible light. The as-synthesized BiOBr/SnO2 photocatalysts exhibit superior photocatalytic activity and stability through the establishment of a p-n heterojunction, resulting in a significant improvement in charge separation and transfer properties. The morphological structure and optical property of the BiOBr/SnO2 heterojunction were also investigated comprehensively. Extended light absorption into the visible range was achieved by SnO2 coating on the surface of the BiOBr microsphere through the constructed heterojunction between BiOBr and SnO2, thus achieving efficient NO removal. Moreover, the transfer channels and directions of charge at the BiOBr/SnO2 interface were determined by a combination of theoretical calculations and experimental studies. Within this p-n heterojunction, the charge in SnO2 migrates into BiOBr through the preformed electron transfer channels, thus generating an internal electric field (IEF) between SnO2 and BiOBr. Under the influence of IEF, the photogenerated electrons of BiOBr migrate from the conduction band (CB) to the CB of SnO2, thus promoting the separation of electrons (e-)-holes (h+) pairs. The intermediates and final products were monitored by the in situ DRIFTS technology in the process of removal of NO in visible light; hence, the oxidation pathways of NO were reasonably proposed. Meanwhile, the construction of the heterojunction not only achieves more efficient NO photocatalytic oxidation but also inhibits the production of more toxic NO2. This work provides mechanistic insights into the interfacial charge transfer for heterojunction photocatalysts and reaction mechanism for efficient air purification.
Collapse
Affiliation(s)
- Huizhong Wu
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chaowei Yuan
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Ruimin Chen
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Jiadong Wang
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jieyuan Li
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Yanjuan Sun
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
- School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| |
Collapse
|
19
|
Alam KM, Kumar P, Gusarov S, Kobryn AE, Kalra AP, Zeng S, Goswami A, Thundat T, Shankar K. Synthesis and Characterization of Zinc Phthalocyanine-Cellulose Nanocrystal (CNC) Conjugates: Toward Highly Functional CNCs. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43992-44006. [PMID: 32530267 DOI: 10.1021/acsami.0c07179] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report highly fluorescent cellulose nanocrystals (CNCs) formed by conjugating a carboxylated zinc phthalocyanine (ZnPc) to two different types of CNCs. The conjugated nanocrystals (henceforth called ZnPc@CNCs) were bright green in color and exhibited absorption and emission maxima at ∼690 and ∼715 nm, respectively. The esterification protocol employed to covalently bind carboxylated ZnPc to surface hydroxyl group rich CNCs was expected to result in a monolayer of ZnPc on the surface of the CNCs. However, dynamic light scattering (DLS) studies indicated a large increase in the hydrodynamic radius of CNCs following conjugation to ZnPc, which suggests the binding of multiple ZnPc molecular layers on the CNC surface. This binding could be through co-facial π-stacking of ZnPc, where ZnPc metallophthalocyanine rings are horizontal to the CNC surface. The other possible binding mode would give rise to conjugated systems where ZnPc metallophthalocyanine rings are oriented vertically on the CNC surface. Density functional theory based calculations showed stable geometry following the conjugation protocol that involved covalently attached ester bond formation. The conjugates demonstrated superior performance for potential sensing applications through higher photoluminescence quenching capabilities compared to pristine ZnPc.
Collapse
Affiliation(s)
- Kazi M Alam
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
| | - Pawan Kumar
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
| | - Sergey Gusarov
- Nanotechnology Research Centre, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, AB T6G 2M9, Canada
| | - Alexander E Kobryn
- Nanotechnology Research Centre, National Research Council Canada, 11421 Saskatchewan Drive, Edmonton, AB T6G 2M9, Canada
| | - Aarat P Kalra
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
- Department of Physics, Faculty of Science, University of Alberta, Edmonton, T6G 1H9, Canada
| | - Sheng Zeng
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
| | - Ankur Goswami
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
- Department of Materials Science and Engineering, Indian Institute of Technology Delhi, New Delhi 11016, India
| | - Thomas Thundat
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, T6G 1H9, Canada
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Karthik Shankar
- Department of Electrical & Computer Engineering, University of Alberta, 9211-116 St., Edmonton, AB T6G 1H9, Canada
| |
Collapse
|
20
|
Vikrant K, Kim KH, Dong F, Giannakoudakis DA. Photocatalytic Platforms for Removal of Ammonia from Gaseous and Aqueous Matrixes: Status and Challenges. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02163] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kumar Vikrant
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Fan Dong
- Research Center for Environmental and Energy Catalysis, Institute of Fundamental and Frontier Sciences, School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China
| | | |
Collapse
|
21
|
SrTiO3/BiOI heterostructure: Interfacial charge separation, enhanced photocatalytic activity, and reaction mechanism. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63472-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
22
|
Li Y, Wu M, Wang Y, Yang Q, Li X, Zhang B, Yang D. Novel P-n Li 2SnO 3/g-C 3N 4 Heterojunction With Enhanced Visible Light Photocatalytic Efficiency Toward Rhodamine B Degradation. Front Chem 2020; 8:75. [PMID: 32117895 PMCID: PMC7026459 DOI: 10.3389/fchem.2020.00075] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/23/2020] [Indexed: 11/23/2022] Open
Abstract
The design of highly efficient and stable photocatalysts to utilize solar energy is a significant challenge in photocatalysis. In this work, a series of novel p-n heterojunction photocatalysts, Li2SnO3/g-C3N4, was successfully prepared via a facile calcining method, and exhibited superior photocatalytic activity toward the photodegradation of Rhodamine B solution under visible light irradiation as compared with pure Li2SnO3 and g-C3N4. The maximum kinetic rate constant of photocatalytic degradation of Rhodamine B within 60 min was 0.0302 min−1, and the composites still retained excellent performance after four successive recycles. Chemical reactive species trapping experiments and electron paramagnetic resonance demonstrated that hydroxyl radicals (·OH) and superoxide ions (·O2-) were the dominant active species in the photocatalytic oxidation of Rhodamine B solution, while holes (h+) only played a minor role. We demonstrated that the enhancement of the photocatalytic activity could be assigned to the formation of a p-n junction photocatalytic system, which benefitted the efficient separation of photogenerated carriers. This study provides a visible light-responsive heterojunction photocatalyst with potential applications in environmental remediation.
Collapse
Affiliation(s)
- Yuanyuan Li
- Department of Biological and Chemical Engineering, Cooperative Innovation Center of Lipid Resources and Children's Daily Chemicals, Chongqing University of Education, Chongqing, China.,College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, China.,National ad Local Joint Laboratory of Traffic Civil Engineering Materials, Department of Materials and Engineering, Chongqing Jiaotong University, Chongqing, China.,Analytical and Testing Center of Chongqing University, Chongqing, China
| | - Meijun Wu
- Department of Biological and Chemical Engineering, Cooperative Innovation Center of Lipid Resources and Children's Daily Chemicals, Chongqing University of Education, Chongqing, China
| | - Yaoqiong Wang
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, China
| | - Qimei Yang
- Department of Biological and Chemical Engineering, Cooperative Innovation Center of Lipid Resources and Children's Daily Chemicals, Chongqing University of Education, Chongqing, China
| | - Xiaoyan Li
- National ad Local Joint Laboratory of Traffic Civil Engineering Materials, Department of Materials and Engineering, Chongqing Jiaotong University, Chongqing, China
| | - Bin Zhang
- Analytical and Testing Center of Chongqing University, Chongqing, China
| | - Dingfeng Yang
- College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing, China
| |
Collapse
|
23
|
Wu H, Chen R, Wang H, Cui W, Li J, Wang J, Yuan C, Zhuo L, Zhang Y, Dong F. An atomic insight into BiOBr/La2Ti2O7 p–n heterojunctions: interfacial charge transfer pathway and photocatalysis mechanism. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02230a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Mechanisms of the enhancement photocatalytic activity of p–n heterojunction BiOBr/La2Ti2O7 and photocatalytic NO oxidation are proposed.
Collapse
|
24
|
Borthakur S, Basyach P, Kalita L, Sonowal K, Tiwari A, Chetia P, Saikia L. Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst. NEW J CHEM 2020. [DOI: 10.1039/c9nj05142b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of WO3@g-C3N4 nanocomposites were prepared by following a facile, cost-effective chemical rote and characterized by different techniques. They are promising photocatalyst with high potential for solar light harvesting and environmental remediation.
Collapse
Affiliation(s)
- Sukanya Borthakur
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Purashri Basyach
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Lisamoni Kalita
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Karanika Sonowal
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Amritanjali Tiwari
- Department of Energy & Environmental Engineering CSIR – Indian Institute of Chemical Technology
- Hyderabad – 500 007
- India
| | - Pubali Chetia
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| | - Lakshi Saikia
- Materials Science and Technology Division
- CSIR-North East Institute of Science and Technology
- Jorhat – 785006
- India
- Academy of Scientific and Innovative Research
| |
Collapse
|
25
|
Ponnaiah SK, Prakash P, Arumuganathan T, Jeyaprabha B. Effectual light-harvesting and electron-hole separation for enhanced photocatalytic decontamination of endocrine disruptor using Cu2O/BiOI nanocomposite. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111860] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
26
|
Li Y, Hong H, Xue X, Zhang Z, Tian H. MoS
2
as Cocatalyst for Improving Photocatalytic Performance of Bi
2
MoO
6. ChemistrySelect 2019. [DOI: 10.1002/slct.201900016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yaxin Li
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and EngineeringJilin University, Changchun 130012 China
| | - Haitao Hong
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and EngineeringJilin University, Changchun 130012 China
| | - Xin Xue
- Cardiovascular Department of The Second HospitalJilin University Changchun 130041 China
| | - Zheng Zhang
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and EngineeringJilin University, Changchun 130012 China
| | - Hongwei Tian
- Key Laboratory of Automobile Materials of MOE and School of Materials Science and EngineeringJilin University, Changchun 130012 China
| |
Collapse
|
27
|
Dong F, Zhang Y, Zhang S. Editorial: Photocatalysis for Environmental Applications. Front Chem 2019; 7:303. [PMID: 31119126 PMCID: PMC6504699 DOI: 10.3389/fchem.2019.00303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/16/2019] [Indexed: 11/22/2022] Open
Affiliation(s)
- Fan Dong
- Chongqing Key Laboratory of Catalysis and New Environmental Materials, Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing, China
- Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing, China
| | - Sen Zhang
- Department of Chemistry, University of Virginia, Charlottesville, VA, United States
| |
Collapse
|
28
|
Khan I, Sun N, Zhang Z, Li Z, Humayun M, Ali S, Qu Y, Jing L. Improved visible-light photoactivities of porous LaFeO3 by coupling with nanosized alkaline earth metal oxides and mechanism insight. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00127a] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It is significant to improve visible-light photoactivities of porous LaFeO3 by coupling with nanosized alkaline earth metal oxides as dual-functional platform for accepting the high level electrons and activating CO2.
Collapse
Affiliation(s)
- Iltaf Khan
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Ning Sun
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Ziqing Zhang
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Zhijun Li
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Muhammad Humayun
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Sharafat Ali
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Yang Qu
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Materials Chemistry
- Ministry of Education
- School of Chemistry and Materials Science
- Heilongjiang University
- International Joint Research Center for Catalytic Technology
| |
Collapse
|