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Cao X, Huo W, Wang M, Wei H, Lu Z, Li K. Visible-light-assisted peroxydisulfate activation over Ag 6Si 2O 7/Cu(II)-modified palygorskite composite for the effective degradation of organic pollutants by radical and nonradical pathways. ENVIRONMENTAL RESEARCH 2022; 214:113970. [PMID: 35987371 DOI: 10.1016/j.envres.2022.113970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/11/2022] [Accepted: 07/20/2022] [Indexed: 06/15/2023]
Abstract
Photoassisted persulfate activation (PPA) is highly efficient oxidation process, but the eligible catalysts are scarce. Herein, a visible-light-responsive Ag6Si2O7 was anchored on Cu(II)-exchanged attapulgite (Cu-Pal) via a facile precipitation-deposition method to construct a novel PDS activator. The synthesized catalyst was systemically analyzed by a series of characterization techniques. The results revealed that Ag6Si2O7 nanoparticles were evenly dispersed on Cu-Pal to form heterojunction. 16%-Ag6Si2O7/Cu-Pal, an optimal catalyst exhibited excellent catalytic performance and stability in the visible-light-assisted PDS activation for AR18 degradation. The influences of reaction parameters on this process were investigated. Under the optimal conditions ([catalyst] = 1.0 g L-1, [PDS] = 3.9 mM, pHi = 5.1), 50 mg L-1 of AR18 was completely degraded within 30 min. More importantly, quenching experiments and EPR tests revealed that besides the common SO4•- and •OH, 1O2 and O2•- were generated as main reactive oxygen species in the PPA by 16%-Ag6Si2O7/Cu-Pal. Moreover, it was found that surface hydroxyl groups of the catalyst and copper species incorporated in Pal could significantly influence PDS activation and ROS generation. Based on these results, together with PDS decomposition, fluorescent probe analysis, and XPS analysis of the used catalyst, the possible mechanisms of the PPA by 16%-Ag6Si2O7/Cu-Pal were proposed. Finally, the versatility and practicability of the established PPA process were verified by degrading other organic contaminants and testing effects of the coexisting anions and water matrices on AR18 degradation. This study may provide new insights for designing and developing the efficient heterogeneous catalysis for wastewater treatment via persulfate-based AOP.
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Affiliation(s)
- Xuefang Cao
- College of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Northwest University, Xi'an 710069, PR China
| | - Wenting Huo
- College of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Northwest University, Xi'an 710069, PR China
| | - Meiling Wang
- College of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Northwest University, Xi'an 710069, PR China
| | - Hong Wei
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an 710048, PR China
| | - Zhihui Lu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Kebin Li
- College of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Northwest University, Xi'an 710069, PR China.
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2
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Shahzad K, Hussain S, Altaf Nazir M, Jamshaid M, ur Rehman A, Alkorbi AS, Alsaiari R, Alhemiary NA. Versatile Ag2O and ZnO nanomaterials fabricated via annealed Ag-PMOS and ZnO-PMOS: An efficient photocatalysis tool for azo dyes. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119036] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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3
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Keijzer PH, Jongh PE, Jong KP. Utilization of Silver Silicate for the Formation of Highly Dispersed Silver on Silica Catalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202101702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Petra H. Keijzer
- Materials Chemistry and Catalysis Debye Institute for Nanomaterials Utrecht University Universiteitsweg 99 3584 CG Utrecht (The Netherlands
| | - Petra E. Jongh
- Materials Chemistry and Catalysis Debye Institute for Nanomaterials Utrecht University Universiteitsweg 99 3584 CG Utrecht (The Netherlands
| | - Krijn P. Jong
- Materials Chemistry and Catalysis Debye Institute for Nanomaterials Utrecht University Universiteitsweg 99 3584 CG Utrecht (The Netherlands
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4
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Busupalli B, Patel VK. Dark–induced vertical growth of chemobrionic architectures in silver based precipitating chemical gardens. Chem Commun (Camb) 2022; 58:4172-4175. [DOI: 10.1039/d1cc06430d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Light sensitivity of many silver compounds has restricted observation of silver based chemical gardens. Here we report for the first time, silver based chemical gardens grown in dark. An identical...
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5
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Wang L, Chen L, Tang M, Jiang S, Gao D. Incorporation of a Z-scheme AgI/Ag 6Si 2O 7 heterojunction to PET fabric for efficient and repeatable photocatalytic dye degradation. NEW J CHEM 2022. [DOI: 10.1039/d2nj04168e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Anchoring the Z-scheme AgI/Ag6Si2O7 photocatalyst on PET fabric facilitates reuse. AgI enhances the separation effect of photogenerated carriers. The photocatalytic activity and stability of AgI/Ag6Si2O7/PET composites are greatly improved.
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Affiliation(s)
- Lili Wang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Lei Chen
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Mengyao Tang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Shoujie Jiang
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
- School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an 710048, China
| | - Dawei Gao
- College of Textiles and Clothes, Yancheng Institute of Technology, Yancheng, 224051, China
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6
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Wang L, Wu J. A review of recent progress in silver silicate-based photocatalysts for organic pollutant degradation. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108619] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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7
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Design and synthesis of a novel nanocomposite based on magnetic dopamine nanoparticles for purification of α-amylase from the bovine milk. Sci Rep 2021; 11:13428. [PMID: 34183749 PMCID: PMC8239001 DOI: 10.1038/s41598-021-92919-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 06/17/2021] [Indexed: 02/06/2023] Open
Abstract
In this paper, a novel nanocomposite based on magnetic nanoparticles decorated by dopamine were reported. Three modified magnetic nanocomposites by dopamine were offered with different type of linkers. The mentioned magnetic nanocomposites were applied to separate α-amylase protein from fresh bovine milk. All of the magnetic nanocomposites were characterized and investigated by using Fourier-transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, field-emission scanning microscope, X-ray diffraction pattern, and vibrating-sample magnetometer analyses. To investigate the purifying application, sodium dodecyl sulfate polyacrylamide gel electrophoresis, one-dimensional isoelectric focusing gel electrophoresis, and alpha-amylase activity assay were employed. With paying attention to factors such as yield of purification and concentration of separated protein by each of magnetic nanocomposite, it could be concluded that the length of linkers played an important role in α-amylase protein separation. According to the results, the best separation and purification of α-amylase protein with 49.83% recovery and 40.11-fold purification efficiency was related to longest length linker, 1,4-butanediol diglycidyl ether, because of considerable conjugation with nanocomposite. Also, docking calculation has shown that the binding energy is - 1.697 kcal/mol and ΔG = - 6.844 kcal/mol which result that the interaction process between dopamine and α-amylase protein is spontaneous.
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Li S, Xue B, Chen J, Liu Y, Zhang J, Wang H, Liu J. Constructing a plasmonic p-n heterojunction photocatalyst of 3D Ag/Ag6Si2O7/Bi2MoO6 for efficiently removing broad-spectrum antibiotics. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117579] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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9
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Chen C, Li M, Jia Y, Chong R, Xu L, Liu X. Surface defect-engineered silver silicate/ceria p-n heterojunctions with a flower-like structure for boosting visible light photocatalysis with mechanistic insight. J Colloid Interface Sci 2020; 564:442-453. [DOI: 10.1016/j.jcis.2019.12.128] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/21/2019] [Accepted: 12/28/2019] [Indexed: 01/09/2023]
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10
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Jia KL, Zhu ZS, Qu J, Jing YQ, Yu XJ, Abdelkrim Y, Hao SM, Yu ZZ. BiOBr/Ag6Si2O7 heterojunctions for enhancing visible light catalytic degradation performances with a sequential selectivity enabled by dual synergistic effects. J Colloid Interface Sci 2020; 561:396-407. [DOI: 10.1016/j.jcis.2019.11.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/31/2019] [Accepted: 11/01/2019] [Indexed: 11/28/2022]
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11
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Li S, Chen J, Hu S, Jiang W, Liu Y, Liu J. A novel 3D Z-scheme heterojunction photocatalyst: Ag6Si2O7 anchored on flower-like Bi2WO6 and its excellent photocatalytic performance for the degradation of toxic pharmaceutical antibiotics. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01201j] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel 3D Ag6Si2O7/Bi2WO6 Z-scheme heterojunction exhibited excellent photocatalytic performance for the degradation of toxic pharmaceutical antibiotics.
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Affiliation(s)
- Shijie Li
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province
- Institute of Innovation & Application
- Zhejiang Ocean University
- Zhoushan
- China
| | - Jialin Chen
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province
- Institute of Innovation & Application
- Zhejiang Ocean University
- Zhoushan
- China
| | - Shiwei Hu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province
- Institute of Innovation & Application
- Zhejiang Ocean University
- Zhoushan
- China
| | - Wei Jiang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province
- Institute of Innovation & Application
- Zhejiang Ocean University
- Zhoushan
- China
| | - Yanping Liu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province
- Institute of Innovation & Application
- Zhejiang Ocean University
- Zhoushan
- China
| | - Jianshe Liu
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry
- College of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- China
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12
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Li W, Chen Q, Lei X, Gong S. Fabrication of Ag/AgBr/Ag3VO4 composites with high visible light photocatalytic performance. RSC Adv 2019; 9:5100-5109. [PMID: 35514669 PMCID: PMC9060689 DOI: 10.1039/c8ra10538c] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 01/24/2019] [Indexed: 01/11/2023] Open
Abstract
Herein, Ag/AgBr/Ag3VO4 composites were synthesized by a simple continuous precipitation method. The obtained composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectroscopy and photoluminescence spectroscopy (PL). Photocatalytic performance of the composites was assessed by the degradation of methyl orange (MO) and tetracycline hydrochloride (TC) under visible light, and the effects of different nominal mass ratios of AgBr and Ag3VO4 on the photocatalytic activity were investigated. The results showed that after 20 min of visible light irradiation (λ > 420 nm), the removal rate of MO in the presence of a 5 : 1 sample reached 98.6%. The EIS and photocurrent results demonstrated that the enhancement of the visible light photocatalytic activity was attributed to the efficient electron–hole pair separation. In addition, the scavenging reactions conducted via the addition of different scavengers confirmed that h+ and ·O2− were the main active species in the reaction. The present study offers potential for the degradation of contaminants. Ag/AgBr/Ag3VO4 composites were synthesized by a simple continuous precipitation method, which were used to degrade organic pollutants and found to have excellent photocatalytic properties.![]()
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Affiliation(s)
- Wenxue Li
- School of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang, 550025
- China
| | - Qianlin Chen
- School of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang, 550025
- China
- Institute of Advanced Technology
| | - Xianyu Lei
- School of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang, 550025
- China
| | - Shang Gong
- School of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang, 550025
- China
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13
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Ning J, Wang M, Luo X, Hu Q, Hou R, Chen W, Chen D, Wang J, Liu J. SiO₂ Stabilized Magnetic Nanoparticles as a Highly Effective Catalyst for the Degradation of Basic Fuchsin in Industrial Dye Wastewaters. Molecules 2018; 23:molecules23102573. [PMID: 30304784 PMCID: PMC6222301 DOI: 10.3390/molecules23102573] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 10/06/2018] [Accepted: 10/07/2018] [Indexed: 11/23/2022] Open
Abstract
Catalytic degradation of organic pollutants by nanomaterials is an effective way for environmental remediation. The Fenton reaction involving H2O2 oxidation catalysed by Fe3+ is an advisable way for wastewater degradation. Herein, Fe3O4/SiO2 core-shell nanoparticles were prepared as catalyst by coprecipitation and sol-gel methods, and this catalyst is used for degradation of fuchsin in wastewater by H2O2. The Fenton reaction between H2O2 and Fe3O4 is proposed to explain the catalytic performance. The coating of SiO2 on Fe3O4 nanoparticles could dramatically stabilize the Fe3O4 in aqueous solution and prevent their oxidation. More importantly, the magnetic property of Fe3O4 nanoparticles endows them with good recyclability. Thus, due to the outstanding catalytic results, almost 100% removal degradation was achieved within 5 min over a wide pH value range at room temperature, which is better than that without catalysts. Temperature is a positive factor for improving the degradation rate, but room temperature is selected as the best temperature for economic and energy savings reasons, because more than 98% of fuchsins can still be degraded at room temperature. Moreover, these Fe3O4/SiO2 core-shell nanoparticles exhibit excellent magnetic recyclability and stable properties after repeated utilization. Therefore, these as-presented Fe3O4/SiO2 core-shell nanoparticles with low-cost and high performance are expected to be applied in practical industry wastewater degradation.
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Affiliation(s)
- Jingheng Ning
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Min Wang
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Xin Luo
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Qiongcan Hu
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Rong Hou
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Weiwei Chen
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Donger Chen
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Jianhui Wang
- School of Chemistry and Biological Engineering, Changsha University of Science & Technology, Changsha 410110, China.
| | - Jun Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, School of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.
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14
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Galante MT, Sotelo P, Hossain MK, Vali A, Raamann A, Longo C, Macaluso RT, Rajeshwar K. Silver Oxide-Based Semiconductors for Solar Fuels Production and Environmental Remediation: a Solid-State Chemistry Approach. ChemElectroChem 2018. [DOI: 10.1002/celc.201800885] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Miguel T. Galante
- Institute of Chemistry; University of Campinas-UNICAMP; 13083-970 Campinas Brazil
| | - Paola Sotelo
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Mohammad K. Hossain
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Abbas Vali
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Asti Raamann
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Claudia Longo
- Institute of Chemistry; University of Campinas-UNICAMP; 13083-970 Campinas Brazil
| | - Robin T. Macaluso
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
| | - Krishnan Rajeshwar
- Department of Chemistry and Biochemistry; The University of Texas at Arlington; Arlington TX 76019 USA
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15
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Tan P, Zhu A, Liu Y, Ma Y, Liu W, Cui H, Pan J. Insights into the efficient charge separation and transfer efficiency of La,Cr-codoped SrTiO3 modified with CoP as a noble-metal-free co-catalyst for superior visible-light driven photocatalytic hydrogen generation. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00769h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Doped SrTiO3 modified with CoP as a co-catalyst for photocatalytic H2 evolution was designed and fabricated in this work.
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Affiliation(s)
- Pengfei Tan
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Anquan Zhu
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Yi Liu
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Yongjin Ma
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Wenwen Liu
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
| | - Hao Cui
- Sino-Platinum Metals Co. Ltd
- Kunming Institute of Precious Metals
- Kunming 650106
- P. R. China
| | - Jun Pan
- State Key Laboratory for Powder Metallurgy
- Central South University
- Changsha 410083
- P. R. China
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16
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Wang Y, Jing Y, Li W, Yu M, Ao X, Xie Y, Chen Q. Silicate silver/flower-like magnalium hydroxide composites for enhanced visible light photodegradation activities. RSC Adv 2018; 8:23442-23450. [PMID: 35540113 PMCID: PMC9081576 DOI: 10.1039/c8ra01154k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 06/10/2018] [Indexed: 12/03/2022] Open
Abstract
Flower-like magnalium layered composites (MgAl-LDH) were first fabricated by a hydrothermal method, and a series of AgSiOx/MgAl-LDH composites with different mole ratios was successfully prepared by loading AgSiOx on the MgAl-LDH surface. The photocatalytic activities of the composites for the degradation of methylene blue (MB) were investigated under visible light irradiation (xenon lamp). The prepared AgSiOx/MgAl-LDH composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy, thermogravimetric analysis (TG), and X-ray photoelectron spectroscopy (XPS). The results revealed that AgSiOx/MgAl-LDH (5 : 1) displayed a photocatalytic degradation efficiency of 99.7% in 30 min for MB. The photocatalytic degradation rate was higher than that of pure AgSiOx. Flower-like magnalium layered composites (MgAl-LDH) were first fabricated by a hydrothermal method, and a series of AgSiOx/MgAl-LDH composites with different mole ratios was successfully prepared by loading AgSiOx on the MgAl-LDH surface.![]()
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Affiliation(s)
- Yongyou Wang
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
| | - Yaqiong Jing
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Wenxue Li
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
| | - Ming Yu
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
| | - Xianquan Ao
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
| | - Yan Xie
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
| | - Qianlin Chen
- College of Chemistry and Chemical Engineering
- Guizhou University
- Guiyang 550025
- China
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17
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In-situ synthesis of amorphous silver silicate/carbonate composites for selective visible-light photocatalytic decomposition. Sci Rep 2017; 7:15001. [PMID: 29118347 PMCID: PMC5678140 DOI: 10.1038/s41598-017-15405-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 10/24/2017] [Indexed: 11/29/2022] Open
Abstract
Coupling two different semiconductors to form composite photocatalysts is an extremely significant technique for environmental remediation. Here, a one-step in-situ precipitation method has been developed to prepare amorphous silver silicate/carbonate (AgSiO/Ag2CO3) nanoparticles (NPs) composites, which are well dispersed sphere-like particles with the sizes of around ~50–100 nm. The high-efficiency photocatalytic activities under visible light (VL) have been carefully evaluated, and the AgSiO/Ag2CO3 NPs composites exhibit selective photocatalytic degradations on Methylene Blue (MB) and Rhodamine B (RhB). The maximum degradation rate for MB can reach ~99.1% within ~40 min under VL irradiation, much higher than that of RhB (~12%) in the same condition, which can be ascribed to (I) the smaller molecule size of MB than that of RhB, (II) the fast charge separation between AgSiO NPs and Ag2CO3 NPs, abundant heterojunction interfaces as well as fully exposed reactive sites. These composites are proposed to be an example for the preparation of other silicate composite photocatalysts for practical applications in environmental remediation.
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Tian Q, Wu W, Liu J, Wu Z, Yao W, Ding J, Jiang C. Dimensional heterostructures of 1D CdS/2D ZnIn2S4 composited with 2D graphene: designed synthesis and superior photocatalytic performance. Dalton Trans 2017; 46:2770-2777. [DOI: 10.1039/c7dt00018a] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multidimensional heterostructure of 1D/2D CdS/ZnIn2S4 with 2D RGO are successfully synthesized, which exhibit superior photoactivity and good stability for the degradation of organic dyes.
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Affiliation(s)
- Qingyong Tian
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Wei Wu
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
- Suzhou Research Institute of Wuhan University
| | - Jun Liu
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Zhaohui Wu
- Department of Biological Engineering and Environment Science Department
- Changsha University
- Changsha 410005
- P. R. China
| | - Weijing Yao
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Jin Ding
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
| | - Changzhong Jiang
- School of Physics and Technology and School of Printing and Packaging
- Wuhan University
- Wuhan 430072
- P. R. China
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19
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Wu W, Jiang CZ, Roy VAL. Designed synthesis and surface engineering strategies of magnetic iron oxide nanoparticles for biomedical applications. NANOSCALE 2016; 8:19421-19474. [PMID: 27812592 DOI: 10.1039/c6nr07542h] [Citation(s) in RCA: 184] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Iron oxide nanoparticles (NPs) hold great promise for future biomedical applications because of their magnetic properties as well as other intrinsic properties such as low toxicity, colloidal stability, and surface engineering capability. Numerous related studies on iron oxide NPs have been conducted. Recent progress in nanochemistry has enabled fine control over the size, crystallinity, uniformity, and surface properties of iron oxide NPs. This review examines various synthetic approaches and surface engineering strategies for preparing naked and functional iron oxide NPs with different physicochemical properties. Growing interest in designed and surface-engineered iron oxide NPs with multifunctionalities was explored in in vitro/in vivo biomedical applications, focusing on their combined roles in bioseparation, as a biosensor, targeted-drug delivery, MR contrast agents, and magnetic fluid hyperthermia. This review outlines the limitations of extant surface engineering strategies and several developing strategies that may overcome these limitations. This study also details the promising future directions of this active research field.
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Affiliation(s)
- Wei Wu
- Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University, Wuhan 430072, P. R. China. and Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P. R. China.
| | - Chang Zhong Jiang
- School of Physics and Technology, Wuhan University, Wuhan 430072, P. R. China.
| | - Vellaisamy A L Roy
- Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR, P. R. China.
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Gandha K, Mohapatra J, Hossain MK, Elkins K, Poudyal N, Rajeshwar K, Liu JP. Mesoporous iron oxide nanowires: synthesis, magnetic and photocatalytic properties. RSC Adv 2016. [DOI: 10.1039/c6ra18530d] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Controlled synthesis of mesoporous iron oxide nanowire nanohybrids with enhanced visible light-driven photocatalytic activity.
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Affiliation(s)
- Kinjal Gandha
- Department of Physics
- University of Texas at Arlington
- Arlington
- USA
| | | | | | - Kevin Elkins
- Department of Physics
- University of Texas at Arlington
- Arlington
- USA
| | - Narayan Poudyal
- Department of Physics
- University of Texas at Arlington
- Arlington
- USA
| | - Krishnan Rajeshwar
- Department of Chemistry and Biochemistry
- University of Texas at Arlington
- Arlington
- USA
| | - J. Ping Liu
- Department of Physics
- University of Texas at Arlington
- Arlington
- USA
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