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Quynh PH, Trang HM, Trung NT, Dinh NN, Van Thanh D, Anh LP, Luyen NT, Van NTK. A novel sonoelectrochemical approach for preparing of ZnO nanoparticles. Nanotechnology 2024; 35:265602. [PMID: 38527359 DOI: 10.1088/1361-6528/ad375a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Accepted: 03/24/2024] [Indexed: 03/27/2024]
Abstract
A novel, rapid, and facile method for one-step sonoelectrochemical synthesis of zinc oxide nanoparticles (UEZ) was introduced in this study. The optimum operating parameters have been selected at a voltage of 7.5 V, KCl concentration of 0.5 M, and the reaction time of 60 min. The as-prepared UEZ were characterized by XRD, SEM, and HRTEM. It was found that the UEZ has a hexagonal wurtzite structure with high crystalline quality, good purity, a size range of 30-100 nm, and good photocatalytic degradation of methylene blue. This work provides a facile route for large-scale synthesizing ZnO nanoparticles via anodization.
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Affiliation(s)
- Pham Huong Quynh
- Hanoi University of Industry, 298 Cau Dien Street, Bac Tu Liem District, Hanoi 100000, Vietnam
| | - Hoang Minh Trang
- Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Hanoi 100000, Vietnam
| | - Nguyen Thanh Trung
- Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay Dist., Hanoi 100000, Vietnam
| | - Nguyen Nang Dinh
- University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi 100000, Vietnam
| | - Dang Van Thanh
- University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi 100000, Vietnam
- Faculty of Basic Science, TNU-University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St., Thai Nguyen 24000, Vietnam
| | - Le Phuoc Anh
- College of Engineering and Computer Science, VinUniversity, Hanoi 100000, Vietnam
| | - Nguyen Thi Luyen
- Institute of Science and Technology, TNU-University of Sciences, Tan Thinh ward, Thai Nguyen 24000, Vietnam
| | - Nguyen Thi Khanh Van
- University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi 100000, Vietnam
- Institute of Science and Technology, TNU-University of Sciences, Tan Thinh ward, Thai Nguyen 24000, Vietnam
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2
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Thuy NT, Tho NN, Hoan NX, Khoi TT, Thanh DV, Thanh NT, Duy HD, Huy NN. An electrical- and chemical-free approach using microfilter and Ag-based catalysts for emergency drinking water treatment. Environ Technol 2024; 45:1733-1747. [PMID: 36508591 DOI: 10.1080/09593330.2022.2152732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
In emergency cases such as disasters, supplying enough safe drinking water is one of the most urgent needs for human life. This research aimed to develop a chemical- and electricity-free drinking water treatment system based on microfiltration and catalysts of Ag and Ag-TiO2-SiO2 coated on glass spheres in both dark and sunlight conditions. The system was applied to treat raw water samples taken from five rivers in Vietnam, simulated floodwater samples with high turbidity and E. coli concentration, and real flooding water samples. The results showed the filtration unit fed with simulated floodwater generated lower fluxes and shorter working durations before chemical cleaning than that fed with normal river water. However, filtrate quality was not significantly different for these five water samples with very low values of turbidity (0-0.66 NTU), total coliform (5-19 CFU (100 mL)-1), and E. coli (0-17 CFU (100 mL)-1). The catalyst units using glass spheres coated with either Ag in dark and sunlight or Ag-TiO2-SiO2 under sunlight can completely remove E. coli and coliform as well as additionally mitigate natural organic matters. This study hence suggests the combination of microfiltration and Ag-based catalytic treatment for safe drinking water supply in emergencies, especially for flooding conditions.
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Affiliation(s)
- Nguyen Thi Thuy
- School of Chemical and Environmental Engineering, International University, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ngo Ngoc Tho
- HCMC University of Food Industry, Ho Chi Minh City, Vietnam
| | | | - Tran Tien Khoi
- School of Chemical and Environmental Engineering, International University, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dang Van Thanh
- Faculty of Basic Sciences, TNU - University of Medicine and Pharmacy, Thai Nguyen City, Vietnam
| | - Nguyen Trung Thanh
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Nanomaterial Laboratory, An Giang University, Long Xuyen City, Vietnam
| | - Ho Duc Duy
- HCMC University of Food Industry, Ho Chi Minh City, Vietnam
| | - Nguyen Nhat Huy
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
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Linh HX, Linh PH, Tuan DD, Quynh PH, Hoa NX, Thanh DV, Hiep HP, Dung NQ. Facile route for preparation of cuprous oxide/copper/cupric oxide nanoparticles by using simultaneous electrochemical and reduction reaction. Heliyon 2024; 10:e25195. [PMID: 38352799 PMCID: PMC10862522 DOI: 10.1016/j.heliyon.2024.e25195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 01/01/2024] [Accepted: 01/23/2024] [Indexed: 02/16/2024] Open
Abstract
Cuprous oxide/copper/cupric oxide nanoparticles were synthesized through a hybrid process involving anodic dissolution and a controlled redox reaction between NaOH and glucose in the solution. The study demonstrates the structural manipulation of the material by varying the reaction components within the solution. Morphology, structural analyses using SEM (Scanning Electron Microscope), EDX (Energy-dispersive X-ray spectroscopy), TEM (Transmission Electron Microscope), FTIR (Fourier Transform Infrared Spectroscopy), XRD (X-ray diffraction), and XPS (X-ray photoelectron spectroscopy) unveiled the tunability of the material's structure based on the reaction components. Nitrogen adsorption analysis employing the Brunauer-Emmett-Teller (BET) equation confirmed the material's porosity, while Dynamic Light Scattering (DLS) measurements provided insights into the materials' hydrodynamic size and zeta potential. The results demonstrated that by increasing the glucose/NaOH ratio during the reaction, the different structures and morphologies of the distinct products were obtained from the clustering of small nanoparticles to cubic shape and flower-like structure. Antibacterial activity tests conducted on various bacterial strains showed a correlation between the morphology and structure of the material and its antibacterial properties. The highest substantial antibacterial efficacy against all tested bacterial strains at a dosage of 100 μg/L was obtained for the samples with clustering morphology, whereas the remaining materials showed no discernible antibacterial effect against one of the studied bacteria. The results also demonstrated that the sample with a clustering structure exhibited superior antibacterial properties when dispersed in water containing dimethylsulfoxide.
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Affiliation(s)
- Ha Xuan Linh
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Hoai Linh
- Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, 100000, Viet Nam
| | - Duong Dinh Tuan
- International School, Thai Nguyen University, Tan Tinh Ward, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Pham Huong Quynh
- Hanoi University of Industry, 298 Cau Dien Street, Bac Tu Liem District, Hanoi, 100000, Viet Nam
| | - Nguyen Xuan Hoa
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Dang Van Thanh
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
- Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Ha Noi, 100000, Viet Nam
| | - Hoang Phu Hiep
- Faculty of Biology, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
| | - Nguyen Quoc Dung
- Faculty of Chemistry, Thai Nguyen Unversity of Education, 20 Luong Ngoc Quyen, Thai Nguyen City, Thai Nguyen, 25000, Viet Nam
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Cuong NK, Thanh DV, Luong DV, Manh The N, Duc Thai T, Tran Thi Tuan A, Thu Ha D, Dat VQ. Histopathological features in the clinical specimens with tuberculosis diagnosis by BACTEC MGIT 960 culture. J Clin Tuberc Other Mycobact Dis 2023; 33:100401. [PMID: 37927571 PMCID: PMC10622830 DOI: 10.1016/j.jctube.2023.100401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023] Open
Abstract
Diagnosis of extrapulmonary tuberculosis remains challenging in lower-middle income countries with high burden of tuberculosis (TB). This study aims to describe the histological characteristics in biopsy samples from patients with confirmed TB. This is a retrospective study of clinical biopsy specimens with positive liquid medium culture for Mycobacterium tuberculosis and histopathological examination in the National Lung Hospital in Vietnam. Among 1045 biopsy specimens with mycobacteria culture, the overall rate of growth of Mycobacteria tuberculosis in culture was 20.7% (216/1045). The positivity rates of MIGT culture among surgical biopsy specimens were 75% in bone specimen, followed by vertebral specimens (51.3%), and joint specimens (26.4%). For specimens obtained by the fine needle aspiration, the positivity rates of MIGT culture were 26.3% in lymph node and 25.3% in pleural specimen. Among specimens with culture confirmation of TB, the most common histopathoglogical suggestive finding of TB was the presence of epithelioid cell (83.3%), Langhans giant cells (75.9%), and caseous necrosis (75.5%). The high proportion of histological features suggestive of TB among the TB culture confirmed biopsy samples support for further evaluation of histological examination and its combination with other recommended rapid molecular assays in specimens with suspicion of TB.
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Affiliation(s)
- Nguyen Kim Cuong
- Department of Respiratory Tuberculosis, National Lung Hospital, Hanoi, Vietnam
- Department of Tuberculosis and Lung Diseases, Hanoi Medical University, Hanoi, Vietnam
| | - Dang Van Thanh
- Department of Infectious Diseases, Hanoi Medical University, Hanoi, Vietnam
| | - Dinh Van Luong
- Centre of Lung Transplantation, National Lung Hospital, Hanoi, Vietnam
| | - Nguyen Manh The
- Department of Respiratory Tuberculosis, National Lung Hospital, Hanoi, Vietnam
| | - Truong Duc Thai
- Department of Respiratory Tuberculosis, National Lung Hospital, Hanoi, Vietnam
| | | | - Doan Thu Ha
- Department of Microbiology and National Tuberculosis Reference Laboratory, National Lung Hospital, Hanoi, Vietnam
| | - Vu Quoc Dat
- Department of Infectious Diseases, Hanoi Medical University, Hanoi, Vietnam
- Hanoi Medical University Hospital, Hanoi Medical University, Hanoi, Vietnam
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Thi Luyen N, Van Nguyen K, Van Dang N, Quang Huy T, Hoai Linh P, Thanh Trung N, Nguyen VT, Thanh DV. Facile One-Step Pyrolysis of ZnO/Biochar Nanocomposite for Highly Efficient Removal of Methylene Blue Dye from Aqueous Solution. ACS Omega 2023; 8:26816-26827. [PMID: 37546599 PMCID: PMC10398690 DOI: 10.1021/acsomega.3c01232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 07/13/2023] [Indexed: 08/08/2023]
Abstract
In this work, we developed a facile one-step pyrolysis method for preparing porous ZnO/biochar nanocomposites (ZBCs) with a large surface area to enhance the removal efficiency of dye from aqueous solution. Peanut shells were pyrolyzed under oxygen-limited conditions with a molten salt ZnCl2, which played the roles of the activating agent and precursor for the formation of nanoparticles. The effects of the mass ratio between the molten salt ZnCl2 and peanut shells as well as pyrolysis temperature on the formation of ZBCs were investigated. Characterization results revealed that the as-synthesized ZBCs exhibited a highly porous structure with a specific surface area of 832.12 m2/g, suggesting a good adsorbent for efficient removal of methylene blue (MB). The maximum adsorption capacity of ZBCs on MB was 826.44 mg/g, which surpassed recently reported adsorbents. The formation mechanism of ZnO nanoparticles on the biochar surface was due to ZnCl2 vaporization and reaction with water molecules extracted from the lignocellulosic structures. This study provides a basis for developing a simple and large-scale synthesis method for wastewater with a high adsorption capacity.
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Affiliation(s)
- Nguyen Thi Luyen
- TNU
- University of Sciences, Thai
Nguyen, Thainguyen 25000, Vietnam
| | - Khien Van Nguyen
- TNU
- University of Sciences, Thai
Nguyen, Thainguyen 25000, Vietnam
| | - Nguyen Van Dang
- TNU
- University of Sciences, Thai
Nguyen, Thainguyen 25000, Vietnam
| | - Tran Quang Huy
- Phenikaa
University Nano Institute (PHENA), Phenikaa University, Hanoi 12116, Vietnam
- Faculty
of Electrical and Electronic Engineering, Phenikaa University, Hanoi 12116, Vietnam
| | - Pham Hoai Linh
- Institute
of Materials Science, Vietnam Academy of Science and Technology, Cau Giay, Hanoi 10072, Vietnam
| | - Nguyen Thanh Trung
- Institute
of Physics, Vietnam Academy of Science and Technology, Vietnam Academy
of Science and Technology, 18 Hoang Quoc Viet, Hanoi 10072, Vietnam
| | - Van-Truong Nguyen
- Faculty of
Fundamental Sciences, Thai Nguyen University
of Technology, Thai Nguyen, Thainguyen 25000, Vietnam
| | - Dang Van Thanh
- TNU-University
of Medicine and Pharmacy, Thai
Nguyen, Thainguyen 25000, Vietnam
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6
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Hai CT, Van Thanh D, Xuan VT, Nam MH, Tam KT. Anticancer activity of Piper chaudocanum essential oils and essential oil-mediated silver nanoparticles. BIOCHEM SYST ECOL 2023. [DOI: 10.1016/j.bse.2023.104621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Toan TQ, Mai NT, Trang HM, Van Hao P, Van Thanh D. Ultrasonic-assisted synthesis of magnetic recyclable Fe 3O 4/rice husk biochar based photocatalysts for ciprofloxacin photodegradation in aqueous solution. RSC Adv 2023; 13:11171-11181. [PMID: 37056971 PMCID: PMC10086671 DOI: 10.1039/d3ra00178d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/30/2023] [Indexed: 04/15/2023] Open
Abstract
In this work, a new facile one-spot method has been designed to fabricate a magnetic recyclable Fe3O4/rice husk biochar photocatalyst (FBP) for the removal of Ciprofloxacin (CIP) in aqueous solution. This method combines ultrasonic-assisted impregnation and precipitation, which can overcome the difficulties of long-time reactions, complex procedures, and extreme condition requirements. The successful fabrication of the Fe3O4/biochar material has been proven by a series of material characterization techniques, including X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Raman, Fourier Transform Infrared Spectroscopy (FTIR), X-ray Photoelectron Spectroscopy (XPS), and vibrating sample magnetometer (VSM). Moreover, the as-product FBP exhibited the excellent ability of photodegrading CIP and the possibility of magnetic recovery from the aqueous solution, suggesting a potential solution for removing antibiotic pollutants in environmental remediation.
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Affiliation(s)
- Tran Quoc Toan
- Faculty of Chemistry, Thai Nguyen University of Education 20 Luong Ngoc Quyen Thai Nguyen Vietnam
| | - Nguyen Thi Mai
- Faculty of Environmental Sciences, University of Science, Vietnam National University Hanoi 334 Nguyen Trai Road Hanoi Vietnam
- Faculty of Basic Science, Thai Nguyen University of Agriculture and Forestry Quyet Thang ward Thai Nguyen city Thai Nguyen Vietnam
| | - Hoang Minh Trang
- Faculty of Environmental Sciences, University of Science, Vietnam National University Hanoi 334 Nguyen Trai Road Hanoi Vietnam
| | - Pham Van Hao
- TNU-University of Information and Communication Technology Z115 St., Quyet Thang Ward Thai Nguyen City Thai Nguyen Vietnam
| | - Dang Van Thanh
- Faculty of Basic Science, Thai Nguyen University of Medicine and Pharmacy 284 Luong Ngoc Quyen, Thai Nguyen city Thai Nguyen Vietnam
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Toan TQ, Ngan TK, Huong DT, Le PA, Thuy NT, Huy NN, Thanh DV, Khai NM, Thi Mai N. Green and Facile Synthesis of Porous SiO 2@C Adsorbents from Rice Husk: Preparation, Characterization, and Their Application in Removal of Reactive Red 120 in Aqueous Solution. ACS Omega 2023; 8:9904-9918. [PMID: 36969448 PMCID: PMC10034781 DOI: 10.1021/acsomega.2c07034] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
In this work, a green, novel, fast, and facile approach for synthesizing a SiO2/C nanocomposite series from rice husk (RH) through quenching and grinding techniques has been reported along with its application for the adsorptive removal of Reactive Red 120 (RR120) dye from an aqueous solution. The effect of carbonization temperature on the textural and interfacial features of RH was confirmed by scanning electron microscopy (SEM), while the structure and elemental composition of the as-synthesized RH were investigated via XRD, Brunauer-Emmett-Teller (BET), FT-IR, Raman, and X-ray photoelectron spectroscopy (XPS). The RH had a high surface area (521.35 m2 g-1), large micropores, mesopores, and total pore volumes of 0.5059, 3.9931, and 5.2196 cm3 g-1, while SiO2 and C were the two major components. In the batch adsorption test, the effects of pH, contact time, adsorbent mass, temperature, and initial RR120 concentration were investigated. The maximum adsorption capacity was fitted by Langmuir, Freundlich, Temkin, Dubinin-Radushkevich (D-R), Hasley, Harkins-Jura, and BET isotherm models, and Langmuir was the best-fitted model. In addition, the pseudo-first-order, pseudo-second-order, intraparticle diffusion, and Elovich chemisorption models were used to explain the adsorption kinetics. Additionally, the values of Gibbs free energy, enthalpy, and entropy thermodynamics suggested that the RR120 adsorption phenomenon by RH8-3 was endothermic and spontaneous. The adsorption process was controlled by a physical mechanism, and the maximum adsorption capacity was found to be 151.52 mg g-1 at pH 2, with a contact time of 90 min, adsorbent amount of 0.03 g, and temperature of 313 K. The adopted technique may open up a new alternative route for the mass utilization of RH for the removal of dyes in water and wastewater and also for various practical applications.
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Affiliation(s)
- Tran Quoc Toan
- Faculty
of Chemistry, Thai Nguyen University of
Education, 20 Luong Ngoc Quyen, Thái Nguyên 25000, Vietnam
| | - Tran Kim Ngan
- Faculty
of Chemistry, Thai Nguyen University of
Education, 20 Luong Ngoc Quyen, Thái Nguyên 25000, Vietnam
| | - Do Tra Huong
- Faculty
of Chemistry, Thai Nguyen University of
Education, 20 Luong Ngoc Quyen, Thái Nguyên 25000, Vietnam
| | - Phuoc-Anh Le
- Institute
of Sustainability Science, VNU Vietnam Japan
University, Vietnam National University, Hanoi 10000, Vietnam
| | - Nguyen Thi Thuy
- School
of Chemical and Environmental Engineering, International University, Linh Trung Ward, Thù Đúc, Ho Chi Minh City 700000, Vietnam
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thù Đúc, Ho Chi Minh City 700000, Vietnam
| | - Nguyen Nhat Huy
- Vietnam
National University Ho Chi Minh City, Linh Trung Ward, Thù Đúc, Ho Chi Minh City 700000, Vietnam
- Faculty
of Environment and Natural Resources, Ho
Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City 70000, Vietnam
| | - Dang Van Thanh
- Faculty of
Basic Science, Thai Nguyen University of
Medicine and Pharmacy, Luong Ngoc Quyen, Thai Nguyen 25000, Vietnam
- Faculty
of Environmental Sciences, University of
Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Hanoi 100000, Vietnam
| | - Nguyen Manh Khai
- Faculty
of Environmental Sciences, University of
Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Hanoi 100000, Vietnam
| | - Nguyen Thi Mai
- Faculty
of Environmental Sciences, University of
Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Hanoi 100000, Vietnam
- Faculty
of Basic Sciences, Thai Nguyen University
of Agriculture and Forestry, Quyet Thang, Thai Nguyen 25000, Vietnam
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Tuyen NL, Toan TQ, Hung NB, Trieu PQ, Dinh NN, Do DB, Van Thanh D, Nguyen VT. Simultaneous precipitation and discharge plasma processing for one-step synthesis of α-Fe 2O 3-Fe 3O 4/graphene visible light magnetically separable photocatalysts. RSC Adv 2023; 13:7372-7379. [PMID: 36895775 PMCID: PMC9989846 DOI: 10.1039/d2ra06844c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 02/21/2023] [Indexed: 03/09/2023] Open
Abstract
A novel facile combination of precipitation and plasma discharge reaction is successfully employed for one-step synthesis of an α-Fe2O3-Fe3O4 graphene nanocomposite (GFs). The co-existence and anchoring of hematite (α-Fe2O3) and magnetite (Fe3O4) nanoparticles onto a graphene sheet in the as synthesized GFs were verified by results of XRD, Raman, SEM, TEM, and XPS. HRTEM characterization was used for confirming the bonding between α-Fe2O3/Fe3O4 nanoparticles and the graphene sheet. Consequently, GFs shows superior photodegrading performance towards methylene blue (MB), compared to individual α-Fe2O3/Fe3O4 nanoparticles, as a result of band gap narrowing and the electron-hole pair recombination rate reducing. Moreover, GFs allows a good possibility of separating and recycling under an external-magnetic field, suggesting potential in visible-light-promoted photocatalytic applications.
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Affiliation(s)
- Nguyen Long Tuyen
- VNU University of Science 334 Nguyen Trai Str. Thanh Xuan Dist. Hanoi Vietnam.,Hung Vuong University Nong Trang Viet Tri City Phu Tho Vietnam
| | - Tran Quoc Toan
- Faculty of Chemistry, Thai Nguyen University of Education 20 Luong Ngoc Quyen Thai Nguyen Vietnam
| | - Nguyen Ba Hung
- Vietnam Military Medical University 160 Phung Hung Ha Dong Hanoi Vietnam
| | - Pham Quoc Trieu
- VNU University of Science 334 Nguyen Trai Str. Thanh Xuan Dist. Hanoi Vietnam
| | - Nguyen Ngoc Dinh
- VNU University of Science 334 Nguyen Trai Str. Thanh Xuan Dist. Hanoi Vietnam
| | - Danh Bich Do
- Faculty of Physics, Hanoi National University of Education 136 Xuan Thuy Cau Giay 100000 Hanoi Viet Nam
| | - Dang Van Thanh
- TNU-University of Medicine and Pharmacy 284 Luong Ngoc Quyen Thai Nguyen Vietnam.,Faculty of Environmental Sciences, University of Science, Vietnam National University 334 Nguyen Trai Road Ha Noi City 100000 Hanoi Vietnam
| | - Van-Truong Nguyen
- Faculty of Fundamental and Applied Science, Thai Nguyen University of Technology 666, 3/2 Street, Tich Luong Ward Thai Nguyen Vietnam
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10
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Tam KT, Thuy NT, Ngan NTK, Khai NM, Van Thanh D. Green synthesis of Piper chaudocanum stem extract mediated silver nanoparticles for colorimetric detection of Hg 2+ ions and antibacterial activity. R Soc Open Sci 2023; 10:220819. [PMID: 36778963 PMCID: PMC9905993 DOI: 10.1098/rsos.220819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 12/05/2022] [Indexed: 06/18/2023]
Abstract
A green synthetic approach to synthesize silver nanoparticles (AgNPs) using the stem extract of Piper chaudocanum for highly sensitive colorimetric detection of Hg2+ with a low limit of detection of 23 nM and easy colorimetric read-out has been reported. In addition, the biosynthesized AgNPs demonstrated efficient antibacterial activity against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The morphology and structure of the as-synthesized AgNPs were examined using SEM, TEM, EDX, XRD and FT-IR analyses. The XRD and TEM results confirm the formation of AgNPs with an average particle size of 8-12 nm. The TLC, CC and HPLC revealed that four main compounds, pentacosanoic acid (1), piperine (2), β-sitosterol (3), and campesterol glucoside (4), isolated from P. chaudocanum extract act as reducing and stabilizing agents for AgNP formation, and piperine plays a vital role in green synthesis. The chemical structures of these compounds were determined by ESI MS, FTIR, and one- and two-dimensional NMR spectroscopic data analysis. This approach is an efficient, green, cost-effective, eco-friendly and promising technique for synthesizing AgNPs with applications in the colorimetric detection of Hg2+ and antibacterial activity.
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Affiliation(s)
- Khieu Thi Tam
- Faculty of Chemistry, TNU-University of Sciences, Tan Thinh Ward, Thai Nguyen City, Vietnam
| | - Nguyen Thi Thuy
- Department of Environmental Engineering, International University, Quarter 6, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Nguyen Thi Kim Ngan
- Faculty of Chemistry, TNU-University of Sciences, Tan Thinh Ward, Thai Nguyen City, Vietnam
| | - Nguyen Manh Khai
- Faculty of Environmental Sciences, University of Science, Vietnam National University, Hanoi, 334 Nguyen Trai Road, Ha Noi City, Vietnam
| | - Dang Van Thanh
- TNU-University of Medicine and Pharmacy, Thai Nguyen city, Vietnam
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11
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Thuy NT, May DT, Thao DNP, Thuy VTT, Thanh DV, Thanh NT, Huy NN. Field study of visitors' behavior in incense burning and its induced air pollution assessment and treatment. Environ Sci Pollut Res Int 2022; 29:45933-45946. [PMID: 35150430 DOI: 10.1007/s11356-022-19124-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
This study conducted a field investigation in the behavior of visitors in the pagoda and burning incense as well as its air pollution situation in Vietnam, and revealed that 92% of people used stick form for offering incense and mainly burning either 1 or 3 sticks/time. Incense smoke exposure caused aroma, comfortable, eye irritation, or hard to breathe. There were 70% of people being aware of the hazard of incense smoke. VOCs, PM2.5, PM10, and CO2 concentrations from burning incense in the Great hall were 1.6-2.5 times higher than those in outside areas. Pollutants' concentrations on the first of the month, full moon day, and Lunar New Year were from 1.5 to 2.0 times higher than those of normal days. A model was designed to collect incense smoke emitted by burning 1 and 3 sticks of seven types of incense on an open area. Except for CO found at low concentrations, VOCs, HCHO, PM2.5, PM10, and CO2 appeared in the smoke with the maximum concentrations higher 2.5-13.5 times than their allowable values. A photocatalytic device using titania nanotubes (TNTs) impregnated with various metals (Cd, Zn, Al, Cu, and Fe) was installed for incense smoke treatment. Effect of type and amount of photocatalyst, as well as initial VOC concentration, were tested. The results show that using 2.0 g of Zn/TNT photocatalysts under UV irradiation provided the highest VOC removal efficiency of 73%, suggesting the potential of application for burning incense in open areas.
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Affiliation(s)
- Nguyen Thi Thuy
- Department of Environmental Engineering, International University, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
| | - Dang Thi May
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan St., Linh Chieu Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Duong Ngoc Phuong Thao
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, 1 Vo Van Ngan St., Linh Chieu Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Vo Thi Thanh Thuy
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet St., Ward 14, District 10, Ho Chi Minh City, Vietnam
| | - Dang Van Thanh
- Faculty of Basic Sciences, TNU - University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St, Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Nguyen Trung Thanh
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam
- Nanomaterial Laboratory, An Giang University, 18 Ung Van Khiem St., Dong Xuyen District, Long Xuyen City, An Giang Province, Vietnam
| | - Nguyen Nhat Huy
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam.
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet St., Ward 14, District 10, Ho Chi Minh City, Vietnam.
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12
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Le PA, Le VQ, Nguyen NT, Nguyen VT, Van Thanh D, Phung TVB. Multifunctional applications for waste zinc-carbon battery to synthesize carbon dots and symmetrical solid-state supercapacitors. RSC Adv 2022; 12:10608-10618. [PMID: 35425023 PMCID: PMC8984403 DOI: 10.1039/d2ra00978a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 03/24/2022] [Indexed: 11/25/2022] Open
Abstract
In this study, we provide a simple and green approach to recycle waste zinc carbon batteries for making carbon dots and porous carbon material. The carbon dots are easily synthesized by one green step, the hydrothermal treatment of a carbon rod in a mixture of DI water and pure ethanol to obtain a blue fluorescence under UV light, which can be used directly as a fluorescence ink. The as-prepared carbon dot process give typical dots with a uniform diameter from 3 to 8 nm with a strong slight blue fluorescent. The porous carbon material is also recycled from carbon powder in a waste battery via one green step annealing process without any chemical activation and with a hierarchically porous structure. This porous carbon material is demonstrated as an electrode for symmetrical solid state supercapacitors (SSCs) in a sandwich structure: porous carbon/PVA–KOH/porous carbon. The SSCs using recycled porous carbon electrodes exhibit a good energy density of 4.58 W h kg−1 at a power density of 375 W kg−1 and 97.6% retention after 2000 cycles. The facile one green step of hydrothermal and also that of calcination provide a promising strategy to recycle waste zinc carbon batteries, which transfers the excellent applications. In this study, we provide a simple and green approach to recycle waste zinc carbon batteries for making carbon dots and porous carbon material.![]()
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Affiliation(s)
- Phuoc-Anh Le
- Institute of Sustainability Science, Vietnam Japan University, Vietnam National University Hanoi 100000 Vietnam
| | - Van Qui Le
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Nghia Trong Nguyen
- School of Chemical Engineering, Hanoi University of Science and Technology Hanoi 100000 Vietnam
| | - Van-Truong Nguyen
- Faculty of Fundamental Sciences, Thai Nguyen University of Technology Thai Nguyen 24000 Vietnam
| | - Dang Van Thanh
- Faculty of Basic Sciences, Thai Nguyen University - University of Medicine and Pharmacy Thai Nguyen 24000 Vietnam
| | - Thi Viet Bac Phung
- Institute of Sustainability Science, Vietnam Japan University, Vietnam National University Hanoi 100000 Vietnam
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13
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Luong NN, Tien NQD, Huy NX, Tue NH, Man LQ, Sinh DDH, Van Thanh D, Chi DTK, Hoa PTB, Loc NH. Expression of 42 kDa chitinase of Trichoderma asperellum (Ta-CHI42) from a synthetic gene in Escherichia coli. FEMS Microbiol Lett 2021; 368:6355433. [PMID: 34415008 DOI: 10.1093/femsle/fnab110] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 08/18/2021] [Indexed: 11/14/2022] Open
Abstract
Chitinases are enzymes that catalyze the degradation of chitin, a major component of the cell walls of pathogenic fungi and cuticles of insects, gaining increasing attention for the control of fungal pathogens and insect pests. Production of recombinant chitinase in a suitable host can result in a more pure product with less processing time and a significantly larger yield than that produced by native microorganisms. The present study aimed to express the synthetic chi42 gene (syncodChi42), which was optimized from the chi42 gene of Trichoderma asperellum SH16, in Escherichia coli to produce 42 kDa chitinase (Ta-CHI42); then determined the activity of this enzyme, characterizations and in vitro antifungal activity as well as its immunogenicity in mice. The results showed that Ta-CHI42 was overexpressed in E. coli. Analysis of the colloidal chitin hydrolytic activity of purified Ta-CHI42 on an agar plate revealed that this enzyme was in a highly active form. This is a neutral chitinase with pH stability in a range of 6-8 and has an optimum temperature of 45°C with thermal stability in a range of 25-35°C. The chitinolytic activity of Ta-CHI42 was almost completely abolished by 5 mM Zn2+ or 1% SDS, whereas it remained about haft under the effect of 1 M urea, 1% Triton X-100 or 5 mM Cu2+. Except for ions such as Mn2+ and Ca2+ at 5 mM that have enhanced chitinolytic activity; 5 mM of Na+, Fe2+ or Mg2+ ions or 1 mM EDTA negatively impacted the enzyme. Ta-CHI42 at 60 U/mL concentration strongly inhibited the growth of the pathogenic fungus Aspergillus niger. Analysis of western blot indicated that the polyclonal antibody against Ta-CHI42 was greatly produced in mice. It can be used to analyze the expression of the syncodChi42 gene in transgenic plants, through immunoblotting assays, for resistance to pathogenic fungi.
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Affiliation(s)
- Nguyen Ngoc Luong
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Nguyen Quang Duc Tien
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Nguyen Xuan Huy
- Department of Biology, University of Education, 34 Le Loi st, Hue 530000, Vietnam
| | - Nguyen Hoang Tue
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Le Quang Man
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Duong Duc Hoang Sinh
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Dang Van Thanh
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Duong Thi Kim Chi
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
| | - Phung Thi Bich Hoa
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam.,Department of Biology, University of Education, 34 Le Loi st, Hue 530000, Vietnam
| | - Nguyen Hoang Loc
- Institute of Bioactive Compounds and Department of Biotechnology, University of Sciences, Hue University, 77 Nguyen Hue st, Hue 530000, Vietnam
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14
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Thi Khanh Van N, Dinh NN, Van Chien N, Huy NN, Trung NT, Toan TQ, Van Thanh D. A simple and efficient ultrasonic-assisted electrochemical approach for scalable production of nitrogen-doped TiO 2nanocrystals. Nanotechnology 2021; 32:465602. [PMID: 34359057 DOI: 10.1088/1361-6528/ac1b55] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/06/2021] [Indexed: 06/13/2023]
Abstract
In this study, we report a facile and effective approach for large-scale production of nitrogen-doped TiO2nanocrystals (UNTs) by a combination of ultrasonic irradiation and electrochemistry at room temperature using NH4NO3electrolyte as the nitrogen source. The as-prepared UNTs were then characterized by x-ray diffraction, Raman spectroscopy, x-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and UV-visible diffuse reflectance spectroscopy. The results indicated that the nitrogen content of UNTs reached 9.3% and bandgap energy of 2.62 eV, thus gave the high photocatalytic degradation of methylene blue under visible light irradiation. The mechanism for the formation of UNTs by ultrasonic-assisted electrochemical approach was also proposed.
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Affiliation(s)
- Nguyen Thi Khanh Van
- VNU University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi, Vietnam
- Institute of Science and Technology, TNU-University of Sciences, Tan Thinh ward, Thai Nguyen City, Vietnam
| | - Nguyen Nang Dinh
- VNU University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi, Vietnam
| | - Nguyen Van Chien
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay Dist., Hanoi, Vietnam
| | - Nguyen Nhat Huy
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet St., Dist. 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Nguyen Thanh Trung
- Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay Dist., Hanoi, Vietnam
| | - Tran Quoc Toan
- Faculty of Chemistry, TNU-University of Education, 20 Luong Ngoc Quyen St., Thai Nguyen City, Vietnam
| | - Dang Van Thanh
- VNU University of Engineering and Technology, Vietnam National University, Hanoi, 144 Xuan Thuy road, Cau Giay, Hanoi, Vietnam
- Faculty of Basic Sciences, TNU-University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St., Thai Nguyen City, Vietnam
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15
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Hao PV, Minh PN, Hong PN, Huy NN, Oanh PT, Nguyen HT, Tran TD, Van Thanh D, Nguyen VTK, Dang NV. Gram-scale synthesis of electrochemically oxygenated graphene nanosheets for removal of methylene blue from aqueous solution. Nanotechnology 2021; 32:16LT01. [PMID: 33455951 DOI: 10.1088/1361-6528/abdc8b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, oxygenated graphene nanosheets (OGNs) were successfully synthesized using a simple electrochemical exfoliation approach and applied to remove methylene blue (MB) in an aqueous solution. The surface morphology and structure of the OGNs were characterized by scanning electron microscopy, transmission electron microscopy, Raman, and x-ray photoelectron spectroscopy. The adsorption performance of OGNs towards aqueous MB was tested by batch experiments. Results showed that a large number of functional groups in OGNs enhanced the removal of MB from the aqueous solution due to the electrostatic interactions between the electrochemically oxygenated groups (e.g. C-OH, C-O, and C=O) and dye molecules. Using Langmuir adsorption isotherm, the maximum MB adsorption capacity (q max) was determined as high as 476.19 mg g-1. These results suggested that the as-prepared OGNs is an effective and promising adsorbent for removing MB, which could be studied extensively for color removal in wastewater treatment.
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Affiliation(s)
- Pham Van Hao
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
- TNU-University of Information and Communication Technology, Z115 St., Quyet Thang Ward, Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Phan Ngoc Minh
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
- Centre for High Technology Development, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
| | - Phan Ngoc Hong
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
- Centre for High Technology Development, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
| | - Nguyen Nhat Huy
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet St., Dist. 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Phung Thi Oanh
- Faculty of Basic Sciences, TNU-University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St., Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Hai Thanh Nguyen
- Faculty of Basic Sciences, TNU-University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St., Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Trang Doan Tran
- Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet St., Dist. 10, Ho Chi Minh City, Vietnam
- Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam
| | - Dang Van Thanh
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St., Cau Giay District, Hanoi, Vietnam
- Faculty of Basic Sciences, TNU-University of Medicine and Pharmacy, 284 Luong Ngoc Quyen St., Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Van Thi Khanh Nguyen
- Faculty of Physics and Technology, TNU-University of Sciences, Tan Thinh Ward, Thai Nguyen City, Thai Nguyen Province, Vietnam
| | - Nguyen Van Dang
- Faculty of Physics and Technology, TNU-University of Sciences, Tan Thinh Ward, Thai Nguyen City, Thai Nguyen Province, Vietnam
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16
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Thuy NT, Hoan NX, Van Thanh D, Khoa PM, Tai NT, Hoang PQH, Huy NN. Application of Electrocoagulation for Printing Wastewater Treatment: From Laboratory to Pilot Scale. J ELECTROCHEM SCI TE 2021. [DOI: 10.33961/jecst.2019.00444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Van HT, Nguyen LH, Dang NV, Chao HP, Nguyen QT, Nguyen TH, Nguyen TBL, Thanh DV, Nguyen HD, Thang PQ, Thanh PTH, Hoang VP. The enhancement of reactive red 24 adsorption from aqueous solution using agricultural waste-derived biochar modified with ZnO nanoparticles. RSC Adv 2021; 11:5801-5814. [PMID: 35423085 PMCID: PMC8694736 DOI: 10.1039/d0ra09974k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 01/17/2021] [Indexed: 11/21/2022] Open
Abstract
In this study, two types of agricultural wastes, sugarcane bagasse (SB) and cassava root husks (CRHs), were used to fabricate biochars. The pristine biochars derived from SB and CRHs (SBB and CRHB, respectively) were modified using ZnO nanoparticles to generate modified biochars (SBB-ZnO and CRHB-ZnO, respectively) for the removal of Reactive Red 24 (RR24) from stimulated wastewater. Batch experiments were performed to evaluate the effects of ZnO nanoparticles' loading ratio, solution pH, contact time, and initial RR24 concentration on the RR24 adsorption capacity of biochars. The RR24 adsorption isotherm and kinetic data on SBB, SBB-ZnO3, CRHB, and CRHB-ZnO3 were analyzed. Results indicate that SB- and CRH-derived biochars with a ZnO nanoparticle loading ratio of 3 wt% could generate maximum adsorption capacities of RR24 thanks to the double growth on the BET surface of modified biochars. The RR24 adsorption capacities of CRHB-ZnO3 and SBB-ZnO3 reached 81.04 and 105.24 mg g-1, respectively, which were much higher than those of pristine CRHB and SBB (66.19 and 76.14, respectively) at an initial RR24 concentration of 250 mg L-1, pH 3, and contact time of 60 min. The adsorption of RR24 onto biochars agreed well with the pseudo-first-order model and the Langmuir isotherm. The RR24 adsorption capacity on modified biochars, which were reused after five adsorption-desorption cycles showed no insignificant drop. The main adsorption mechanisms of RR24 onto biochars were controlled by electrostatic interactions between biochars' surface positively charged functional groups with azo dye anions, pore filling, hydrogen bonding formation, and π-π interaction.
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Affiliation(s)
- Huu Tap Van
- Faculty of Natural Resources and Environment, TNU - University of Sciences (TNUS) Tan Thinh Ward Thai Nguyen City 24000 Vietnam
| | - Lan Huong Nguyen
- Faculty of Environment - Natural Resources and Climate Change, Ho Chi Minh City University of Food Industry (HUFI) Ho Chi Minh City Vietnam
| | - N V Dang
- Faculty of Physics and Technology, TNU - University of Sciences (TNUS) Tan Thinh Ward Thai Nguyen City Vietnam
| | - Huan-Ping Chao
- Department of Environmental Engineering, Chung Yuan Christian University Taoyuan 32023 Taiwan
| | - Quang Trung Nguyen
- Faculty of Natural Resources and Environment, TNU - University of Sciences (TNUS) Tan Thinh Ward Thai Nguyen City 24000 Vietnam
| | - Thu Huong Nguyen
- Faculty of Natural Resources and Environment, TNU - University of Sciences (TNUS) Tan Thinh Ward Thai Nguyen City 24000 Vietnam
| | - Thi Bich Lien Nguyen
- Faculty of Natural Resources and Environment, TNU - University of Sciences (TNUS) Tan Thinh Ward Thai Nguyen City 24000 Vietnam
| | - Dang Van Thanh
- TNU - University of Medicine and Pharmacy Thai Nguyen Vietnam
| | - Hai Duy Nguyen
- Faculty of Environment, Thai Nguyen University of Agriculture and Forestry (TUAF) Thai Nguyen City 24000 Vietnam
| | - Phan Quang Thang
- Institute of Environmental Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road Ha Noi City Vietnam
| | - Pham Thi Ha Thanh
- Faculty of Chemistry, TNU - University of Education No. 20, Luong Ngoc Quyen Road Thai Nguyen City Vietnam
| | - Vinh Phu Hoang
- School of Chemistry, Biology and Environment, Vinh University No. 182 Le Duan Vinh City Nghe An Province Vietnam
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Dung NQ, Duong TTT, Lam TD, Dung DD, Huy NN, Thanh DV. Corrigendum to “A simple route for electrochemical glucose sensing using background current subtraction of cyclic voltammetry technique” [J. Electroanal. Chem. 848 (1 September 2019) 113323]. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Dung NQ, Duong TTT, Lam TD, Dung DD, Huy NN, Van Thanh D. A simple route for electrochemical glucose sensing using background current subtraction of cyclic voltammetry technique. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113323] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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20
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Van Thanh D, Oanh PP, Huong DT, Le PH. Ultrasonic-assisted cathodic electrochemical discharge for graphene synthesis. Ultrason Sonochem 2017; 34:978-983. [PMID: 27773329 DOI: 10.1016/j.ultsonch.2016.07.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/27/2016] [Accepted: 07/27/2016] [Indexed: 06/06/2023]
Abstract
We present a novel and highly efficient method for exfoliating of graphite to produce graphene via the synergistic effects of in-situ plasma induced electrochemical exfoliation with ultrasonic energy, called ultrasonic-assisted cathodic electrochemical discharge. This method can work at moderate temperatures without the need of acidic media or expensive ionic electrolyte. The produced graphene exhibited a large lateral dimension of approximately 6μm and a thickness of 2.5nm, corresponding to approximately seven layers of graphene. An exfoliating mechanism of graphite to produce graphene sheets is also proposed in this study.
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Affiliation(s)
- Dang Van Thanh
- Faculty of Basic Sciences, College of Medicine and Pharmacy, Thai Nguyen University, Thai Nguyen, Viet Nam.
| | - Phung Phi Oanh
- Thai Nguyen University of Education, Thai Nguyen University, Thai Nguyen, Viet Nam
| | - Do Tra Huong
- Thai Nguyen University of Education, Thai Nguyen University, Thai Nguyen, Viet Nam
| | - Phuoc Huu Le
- Faculty of Basic Sciences, Can Tho University of Medicine and Pharmacy, 179 Nguyen Van Cu Street, Can Tho, Viet Nam
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21
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Van Thanh D, Li LJ, Chu CW, Yen PJ, Wei KH. Plasma-assisted electrochemical exfoliation of graphite for rapid production of graphene sheets. RSC Adv 2014. [DOI: 10.1039/c3ra46807k] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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22
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Abstract
An efficient method for the production of few-layer MoS2nanosheets through exfoliation of bulk MoS2compounds that were subject to quenching in liquid N2and subsequent ultrasonication.
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Affiliation(s)
- Dang Van Thanh
- Department of Material Science and Engineering
- National Chiao Tung University
- Hsinchu 300, Taiwan
| | - Chien-Chung Pan
- Department of Material Science and Engineering
- National Chiao Tung University
- Hsinchu 300, Taiwan
| | - Chih-Wei Chu
- Research Center for Applied Sciences
- Academia Sinica
- Taipei, Taiwan
| | - Kung-Hwa Wei
- Department of Material Science and Engineering
- National Chiao Tung University
- Hsinchu 300, Taiwan
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Thanh DV, Chen HC, Li LJ, Chu CW, Wei KH. Plasma electrolysis allows the facile and efficient production of graphite oxide from recycled graphite. RSC Adv 2013. [DOI: 10.1039/c3ra43084g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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