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Li Y, Wei X, Liu Q, Zang D, You R. Visible Light-Activated Room Temperature NO 2 Gas Sensing Based on the In 2O 3@ZnO Heterostructure with a Hollow Microtube Structure. ACS Sens 2024; 9:3741-3753. [PMID: 38996081 DOI: 10.1021/acssensors.4c00919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2024]
Abstract
The persistent challenge of poor recovery characteristics of NO2 sensors operated at room temperature remains significant. However, the development of In2O3-based gas sensing materials provides a promising approach to accelerate response and recovery for sub-ppm of NO2 detection at room temperature. Herein, we propose a simple two-step method to synthesize a one-dimensional (1D) In2O3@ZnO heterostructure material with hollow microtubes, by coupling metal-organic frameworks (MOFs) (MIL-68 (In)) and zinc ions. Meanwhile, the In2O3@ZnO composite-based gas sensor exhibits superior sensitivity performance to NO2 under visible light activation. The response value to 5 ppm of NO2 at room temperature is as high as 1800, which is 35 times higher than that of the pure In2O3-based sensor. Additionally, the gas sensor based on the In2O3@ZnO heterostructure demonstrates a significantly reduced response/recovery time of 30 s/67 s compared to the sensor based on pure In2O3 (74 s/235 s). The outstanding gas sensing properties of the In2O3@ZnO heterostructure-based sensors can be attributed to the enhanced photogenerated charge separation efficiency resulting from the heterostructure effect, and the improved receptor function toward NO2, which can increase the reactive sites and gas adsorption capacity. In summary, this work proposes a low-cost and efficient method to synthesize a 1D heterostructure material with microtube structures, which can serve as a fundamental technique for developing high-performance room-temperature gas sensors.
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Affiliation(s)
- Ying Li
- Laboratory of the Intelligent Microsystems, Beijing Information Science and Technology University, Beijing 100192, China
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
| | - Xiangyang Wei
- Laboratory of the Intelligent Microsystems, Beijing Information Science and Technology University, Beijing 100192, China
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
| | - Qingyuan Liu
- Beijing Institute of Control Engineering, Beijing 100090, China
- Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology, Beijing 100090, China
| | - Diming Zang
- Laboratory of the Intelligent Microsystems, Beijing Information Science and Technology University, Beijing 100192, China
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
| | - Rui You
- Laboratory of the Intelligent Microsystems, Beijing Information Science and Technology University, Beijing 100192, China
- School of Instrument Science and Optoelectronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
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2
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Zhan M, Hong Y, Fang Z, Qiu D. Magnetic recyclable visible light-driven Bi 2WO 6/Fe 3O 4/RGO for photocatalytic degradation of Microcystin-LR: Mechanism, pathway, and influencing factors. ENVIRONMENTAL RESEARCH 2024; 252:118885. [PMID: 38614200 DOI: 10.1016/j.envres.2024.118885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 03/16/2024] [Accepted: 04/04/2024] [Indexed: 04/15/2024]
Abstract
Photocatalysis was an attractive strategy that had potential to tackle the Microcystin-LR (MC-LR) contamination of aquatic ecosystems. Herein, magnetic photocatalyst Fe3O4/Bi2WO6/Reduced graphene oxide composites (Bi2WO6/Fe3O4/RGO) were employed to degrade MC-LR. The removal efficiency and kinetic constant of the optimized Bi2WO6/Fe3O4/RGO (Bi2WO6/Fe3O4-40%/RGO) was 1.8 and 2.3 times stronger than the pure Bi2WO6. The improved activity of Bi2WO6/Fe3O4-40%/RGO was corresponded to the expanded visible light adsorption ability and reduction of photogenerated carrier recombination efficiency through the integration of Bi2WO6 and Fe3O4-40%/RGO. The MC-LR removal efficiency exhibited a positive tendency to the initial density of algae cells, fulvic acid, and the concentration of MC-LR decreased. The existed anions (Cl-, CO3-2, NO3-, H2PO4-) reduced MC-LR removal efficiency of Bi2WO6/Fe3O4-40%/RGO. The Bi2WO6/Fe3O4-40%/RGO could degrade 79.3% of MC-LR at pH = 7 after 180 min reaction process. The trapping experiments and ESR tests confirmed that the h+, ∙OH, and ∙O2- played a significant role in MC-LR degradation. The LC-MS/MS result revealed the intermediates and possible degradation pathways.
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Affiliation(s)
- Mingming Zhan
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Yu Hong
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Zhi Fang
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Daping Qiu
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
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Gautam N, Singh KB, Snigdha, Upadhyay DD, Pandey G. Structural and optical properties of silver supported α-Fe 2O 3 nanocomposite fabricated by Saraca asoca leaf extract for the effective photo-degradation of cationic dye Azure B. RSC Adv 2023; 13:23181-23196. [PMID: 37533787 PMCID: PMC10391326 DOI: 10.1039/d3ra03315e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/13/2023] [Indexed: 08/04/2023] Open
Abstract
In recent decades, several nanocomposites developed by chemical synthetic routes, have been demonstrated as efficient photocatalysts for the photodegradation of hazardous organic dyes. The present investigation reports the sonochemical-assisted fabrication of silver-supported α-Fe2O3 nanocomposites (SA@Ag@IONCs) using the Saraca asoca leaf extract. The magnetic nanocomposites can be easily removed from the reaction mixture. The morphology of these materials was characterized by field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), XPS, BET surface area analyzer, UV-visible spectroscopy, photoluminescence, X-ray diffraction (XRD), and VSM techniques. The XRD and electron microscopy analyses revealed the small size and well-crystalline SA@Ag@IONC particles with spherical and buckyball structures. The large surface area of SA@Ag@IONCs was confirmed by BET analysis. The absorption edge in UV-visible spectra appeared to migrate towards high wavelengths for the SA@Ag@IONC composite, causing a change in the bandgap energy. In the case of the sonication assisted composite, the bandgap energy was 2.1 eV, making it easier for the electron to transfer from the valence band to conduction band. The decoration of ultrasmall silver onto the surfaces of the α-Fe2O3 nanocomposite, which considerably increases the capacity to absorb sunlight, enhances the efficiency of charge carrier separation, and inhibits the electron-hole recombination rate as confirmed by the reduced PL intensity, is responsible for the excellent photocatalytic degradation performance. Outcomes shown SA@Ag@IONCs have a high photodegradation rate as well as high-rate constant value at an optimized condition that is at pH 9 and 0.5 g L-1 dose of nanocomposite, photodegradation rate of Azure B is ∼94%. Trap experiment results indicated that O2˙- and h+ are the active species responsible for the photodegradation of AzB.
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Affiliation(s)
- Neelam Gautam
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University Lucknow India
| | - Kijay Bahadur Singh
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University Lucknow India
| | - Snigdha
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University Lucknow India
| | - Deen Dayal Upadhyay
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University Lucknow India
| | - Gajanan Pandey
- Department of Chemistry, Babasaheb Bhimrao Ambedkar University Lucknow India
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Li Z, Ai W, Zhang Y, Zhang J, Bacha AUR, Liu W, Zhong D, Cai Y, Jin W, Yang L. Dual step-scheme heterojunction with full-visible-light-harvesting towards synergistic persulfate activation for enhanced photodegradation. J Colloid Interface Sci 2023; 640:456-471. [PMID: 36870221 DOI: 10.1016/j.jcis.2023.02.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/31/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023]
Abstract
The occurrence of micropollutants in aquatic media raises great concern because of their biological toxicity and persistence. Herein, visible-light-driven photocatalyst titanium dioxide/graphitic carbon nitride/triiron tetraoxide (TiO2-x/g-C3N4/Fe3O4, TCNF) with oxygen vacancies (Ov) was prepared via a facile hydrothermal-calcination method. The complementary visible-light co-absorption among semiconductors enhances light-harvesting efficiency. The built-in electric field formed during Fermi level alignment drives photoinduced electron transfer to improve charge separation across the interfaces. The increased light-harvesting and favorable energy band bending significantly enhance the photocatalytic performance. Therefore, TCNF-5-500/persulfate system could effectively photodegrade bis-phenol A within 20 min under visible-light irradiation. Moreover, the superior durability, non-selective oxidation, adaptability, and eco-friendliness of the system were confirmed by different reaction conditions and biotoxicity assessment. Furthermore, the photodegradation reaction mechanism was presented according to the major reactive oxygen species produced in the system. Thus, this study constructed a dual step-scheme heterojunction by tuning visible-light absorption and energy band structure to increase the charge transfer efficiency and photogenerated carrier lifetime, which has great potential for environmental remediation using visible photocatalysis.
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Affiliation(s)
- Zhiyang Li
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Wei Ai
- CSCEC AECOM Consultants Co., Ltd., Lanzhou 730000, China
| | - Yinghe Zhang
- Shenzhen Key Laboratory of Advanced Functional Carbon Materials Research and Comprehensive Application, School of Science, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China.
| | - Jianqiao Zhang
- Luohu District Urban Management and Comprehensive Law Enforcement Bureau, Shenzhen 518003, PR China; Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Aziz-Ur-Rahim Bacha
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Wenjie Liu
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Dan Zhong
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Yixiao Cai
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Wenbiao Jin
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Lei Yang
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China.
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5
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Zulfa LL, Ediati R, Hidayat ARP, Subagyo R, Faaizatunnisa N, Kusumawati Y, Hartanto D, Widiastuti N, Utomo WP, Santoso M. Synergistic effect of modified pore and heterojunction of MOF-derived α-Fe 2O 3/ZnO for superior photocatalytic degradation of methylene blue. RSC Adv 2023; 13:3818-3834. [PMID: 36756550 PMCID: PMC9890639 DOI: 10.1039/d2ra07946a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/15/2023] [Indexed: 01/27/2023] Open
Abstract
Mesoporous heterojunction MOF-derived α-Fe2O3/ZnO composites were prepared by a simple calcination of α-Fe2O3/ZIF-8 as a sacrificial template. The optical properties confirm that coupling of both the modified pore and the n-n heterojunction effectively reduces the possibility of photoinduced charge carrier recombination under irradiation. The mesoporous Fe(25)ZnO with 25% loading of α-Fe2O3 exhibited the best performance in MB degradation, up to ∼100% after 150 minutes irradiation, higher than that of pristine ZnO and α-Fe2O3. Furthermore, after three cycles reusability, mesoporous Fe(25)ZnO still showed an excellent stability performance of up to 95.42% for degradation of MB. The proposed photocatalytic mechanism of mesoporous Fe(25)ZnO for the degradation of MB corresponds to the n-n heterojunction system. This study provides a valuable reference for preparing mesoporous MOF-derived metal oxides with an n-n heterojunction system to enhance MB photodegradation.
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Affiliation(s)
- Liyana Labiba Zulfa
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Ratna Ediati
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | | | - Riki Subagyo
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Nuhaa Faaizatunnisa
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Yuly Kusumawati
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Djoko Hartanto
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Nurul Widiastuti
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
| | - Wahyu Prasetyo Utomo
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia .,School of Energy and Environment, City University of Hong Kong Hong Kong 999077 China
| | - Mardi Santoso
- Department of Chemistry, Faculty of Science, Institut Teknologi Sepuluh Nopember Surabaya 60111 Indonesia
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Lin S, Tian Y, Zhang W, Zhao T, Zhao M, Wang H. Enhanced photocatalytic activity over ZnO supported on calcium sulfate whisker derived from desulfurization gypsum. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1208-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Self-templated synthesis of core-shell Fe3O4@ZnO@ZIF-8 as an efficient visible-light-driven photocatalyst. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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8
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Jiang X, Xiao K, Liu Z, Xu W, Liang F, Mo S, Wu X, Beiyuan J. Novel 0D-1D-2D nanostructured MCN/NCDs recyclable composite for boosted peroxymonosulfate activation under visible light toward tetracycline degradation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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Zhang N, Wu X, Lv K, Chu Y, Wang G, Sun XP. Controlled synthesis of magnetic polyoxometalates/iron oxide composites for photocatalytic degradation. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2078366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Niuniu Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Xia Wu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Kangjia Lv
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Yujie Chu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Guan Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
| | - Xiao-Peng Sun
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, China
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10
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Zhang Q, Liu S, Du C, Fu Y, Xiao K, Zhang X, Chen J. Highly Selective and Sensitive microRNA-210 Assay Based on Dual-Signaling Electrochemical and Photocurrent-Polarity-Switching Strategies. Anal Chem 2021; 93:14272-14279. [PMID: 34645263 DOI: 10.1021/acs.analchem.1c03354] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly sensitive and selective microRNA (miRNA) assay is of great significance for disease diagnosis and therapy. Herein, a magnetic-assisted electrochemistry (EC)-photoelectrochemistry (PEC) dual-mode biosensing platform was developed for miRNA-210 detection based on dual-signaling EC and photocurrent-polarity-switching PEC strategies. Porous magnetic Fe3O4 octahedra with a large surface area were synthesized by calcining Fe-based metal-organic frameworks. Subsequently, the magnetic photoelectric materials (Fe3O4@CdS) were developed by the successive ionic layer adsorption and reaction method in Cd2+ and S2- solutions. Then, the self-assembled DNA nanoprisms contained three thiols/hanging arms that could capture miRNA-210 efficiently and were anchored to the Fe3O4@CdS octahedra via the Cd-S bond. When miRNA-210 was present, the double-stranded DNA concatemers [the self-assembled duplex helixes based on a pair of methylene blue (MB)-labeled single-stranded DNAs (AP1 and AP2) through the hybridization chain reaction and then intercalated with adriamycin (Dox) into their grooves] were connected with the Fe3O4@CdS-DNA nanoprisms. MB and Dox not only acted as the electrochemical probes but also synergistically switched the photocurrent polarity of the Fe3O4@CdS octahedra. Thus, miRNA-210 was assayed sensitively and selectively via the proposed EC-PEC dual-mode biosensing platform. Additionally, the abovementioned recognition steps occurred in a homogeneous system, and the effects of the impurities and interferences on the miRNA-210 assay could be easily avoided by magnetic separation due to the good magnetic properties of Fe3O4 octahedra. The proposed EC-PEC dual-mode biosensing platform showed a wide range of potential applications in bioanalysis and early diagnosis of disease.
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Affiliation(s)
- Qingqing Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Suying Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Cuicui Du
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Yamin Fu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Ke Xiao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Xiaohua Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
| | - Jinhua Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P.R. China
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11
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Gao R, Liu B, Luo D, Su Y, Su L. Enhanced Immunosensor Using a Handheld pH Meter for the Point‐of‐Care, Sensitive Detection of Prostate Specific Antigen. ELECTROANAL 2021. [DOI: 10.1002/elan.202100285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Rong Gao
- Engineering Laboratory for Synthetic Drugs (Ministry of Education of Guizhou Province) College of Pharmacy Guizhou University Guizhou 550025 PR China
| | - Bingqian Liu
- Engineering Laboratory for Synthetic Drugs (Ministry of Education of Guizhou Province) College of Pharmacy Guizhou University Guizhou 550025 PR China
| | - Dajuan Luo
- Engineering Laboratory for Synthetic Drugs (Ministry of Education of Guizhou Province) College of Pharmacy Guizhou University Guizhou 550025 PR China
| | - Yonghuan Su
- Engineering Laboratory for Synthetic Drugs (Ministry of Education of Guizhou Province) College of Pharmacy Guizhou University Guizhou 550025 PR China
| | - Lixia Su
- Engineering Laboratory for Synthetic Drugs (Ministry of Education of Guizhou Province) College of Pharmacy Guizhou University Guizhou 550025 PR China
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12
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Yu F, Tian F, Zou H, Ye Z, Peng C, Huang J, Zheng Y, Zhang Y, Yang Y, Wei X, Gao B. ZnO/biochar nanocomposites via solvent free ball milling for enhanced adsorption and photocatalytic degradation of methylene blue. JOURNAL OF HAZARDOUS MATERIALS 2021; 415:125511. [PMID: 33740715 DOI: 10.1016/j.jhazmat.2021.125511] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 02/17/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
There are challenges in developing multifunctional materials that can not only effectively adsorb but also completely eliminate organic contaminants in water. In this work, novel ZnO/biochar nanocomposites were synthesized using a facile ball-milling method. A series of characterization results showed that the ZnO nanoparticles dispersed uniformly on carbon surface within the biochar matrix. Ball milling increased the mesopores and macropores of the nanocomposites by breaking biochar and squeezing ZnO. The addition of appropriate amount of ZnO into biochar enhanced both the adsorption capacity and photocatalytic ability of the nanocomposites for methylene blue (MB) removal. When the initial concentration of MB was 160 mg/g, the nanocomposites exhibited high MB removal efficiency (up to 95.19%) under visible light through the combination of adsorption and photocatalysis. This work provides a feasible synthesis of metal oxide/biochar nanocomposites with excellent adsorption and photocatalysis properties for the treatment of organic dye wastewater.
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Affiliation(s)
- Fang Yu
- School of Resource and Environmental Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Fengyu Tian
- School of Resource and Environmental Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Haowen Zou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zihan Ye
- School of Resource and Environmental Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Chuang Peng
- School of Resource and Environmental Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China.
| | - Jinsheng Huang
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Yulin Zheng
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Yue Zhang
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Yicheng Yang
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
| | - Xiaoqian Wei
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
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13
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Pathak S, Verma R, Singhal S, Chaturvedi R, Kumar P, Sharma P, Pant RP, Wang X. Spin dynamics investigations of multifunctional ambient scalable Fe 3O 4 surface decorated ZnO magnetic nanocomposite using FMR. Sci Rep 2021; 11:3799. [PMID: 33589699 PMCID: PMC7884716 DOI: 10.1038/s41598-021-83394-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 12/22/2020] [Indexed: 11/09/2022] Open
Abstract
Microwave spin resonance behavior of the Fe3O4 surface decorated ZnO nanocomposites (FZNC) has been investigated by ferromagnetic resonance (FMR). Modified hydrothermal method has been adopted to fabricate FZNC samples with Fe3O4 nanoparticles chains were used as seeds in the uniform magnetic field to decorate them on the surface of the ZnO nanoparticles in a unique configuration. Spin dynamics investigation confirms the transition of ZnO from diamagnetic to ferromagnetic as the sharp FMR spectra converts to the broad spectra with Fe3O4 nanoparticles incorporation. A single broad FMR spectra confirms that no isolated Fe3+ or Zn2+ ions exist which is also in agreement with XRD confirming suitable composite formation. Further, the increase in Fe3O4 concentration leads to decrease in g-value which is resulting from the internal field enhancement due to magnetic ordering. Also, various spin resonance parameters were calculated for the FZNC which provides a detail information about the magnetic ordering, exchange coupling and anisotropy. Elemental analysis confirms the presence of Fe and Zn simultaneously and transmission electron microscopy (TEM) image show the presence of Fe3O4 on the grain boundaries of ZnO which has been confirmed by taking high-resolution TEM and electron diffraction patterns on both sides of the interface. These unique structural configuration of the FZNC has tremendous potential in various magneto-optoelectronic, spintronics and electro-chemical applications.
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Affiliation(s)
- Saurabh Pathak
- School of Engineering, RMIT University, Melbourne, VIC, Australia.
- Department of Mechanical Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India.
| | - Rajni Verma
- School of Physics, The University of Melbourne, Parkville, VIC, Australia
| | - Sakshi Singhal
- Institute of Nuclear Medicine & Allied Sciences, DRDO, Brig SK Mazumdar Road, Delhi, India
| | | | - Prashant Kumar
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - Pragati Sharma
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - R P Pant
- Academy of Scientific and Innovative Research, CSIR-NPL Campus, New Delhi, India
| | - Xu Wang
- School of Engineering, RMIT University, Melbourne, VIC, Australia.
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14
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Experimental and molecular docking model studies for the adsorption of polycyclic aromatic hydrocarbons onto UiO-66(Zr) and NH2-UiO-66(Zr) metal-organic frameworks. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115608] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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15
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High photocatalytic activity of magnetically separable ZnO and Ag/ZnO supported on Mg-ferrite nanoparticles. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Cr2O3/cellulose hybrid nanocomposites with unique properties: Facile synthesis, photocatalytic, bactericidal and antioxidant application. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2020; 205:111842. [DOI: 10.1016/j.jphotobiol.2020.111842] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/19/2020] [Accepted: 02/24/2020] [Indexed: 01/10/2023]
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