1
|
Chen JP, Song C, Jin T, Xu J, Yang LM. Synergistic effect on simultaneous treatment of Cr(VI) and chloramphenicol using a non-thermal plasma technology. CHEMOSPHERE 2024; 359:142304. [PMID: 38734253 DOI: 10.1016/j.chemosphere.2024.142304] [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: 02/07/2024] [Revised: 05/05/2024] [Accepted: 05/09/2024] [Indexed: 05/13/2024]
Abstract
Toxic organic and heavy metal contaminants commonly exist in industrial waste stream(s) and treatment is of great challenge. In this study, a dielectric barrier discharge (DBD) non-thermal plasma technology was employed for the simultaneous treatment of two important contaminants, chloramphenicol (CAP) and Cr(VI) in an aqueous solution through redox transformations. More than 70% of CAP and 20% of TOC were degraded in 60 min, while Cr(VI) was completely removed in 10 min. The hydroxyl radicals were the main active species for the degradation. Meanwhile, the consumption of hydroxyl radicals was beneficial to the reduction of Cr(VI). The synergistic effect was investigated between CAP degradation and Cr(VI) reduction. The reduction of Cr(VI) would be enhanced in the presence of CAP with a low concentration and could be inhibited under a high concentration, because part of hydroxyl radicals could be consumed by the low-concentration CAP and the obtained intermediates with a higher kinetic rate. However, CAP with a high concentration could react with such reductive species as eaq- and •H, which could compete with Cr(VI) and inhibit the reduction. In addition, the presence of Cr(VI) enhanced the degradation and mineralization of CAP; the study of obtained intermediates indicated that the presence of Cr(VI) changed the degradation path of CAP as Cr(VI) would react with reductive species, enhance the generation of hydroxyl radicals, and cause more hydroxylation reactions. Moreover, the mechanism for the simultaneous redox transformations of CAP and Cr(VI) was illustrated. This study indicates that the DBD non-thermal plasma technology can be one of better solutions for simultaneous elimination of heavy metal and organic contaminants in aquatic environments.
Collapse
Affiliation(s)
- J Paul Chen
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, China; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge, Singapore.
| | - Chao Song
- Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge, Singapore
| | - Tenghui Jin
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, China
| | - Jiajie Xu
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, China
| | - Li-Ming Yang
- Department of Chemical and Biochemical Engineering, National University of Singapore, 10 Kent Ridge, Singapore
| |
Collapse
|
2
|
Ghosh A, Pramanik A, Pal S, Sarkar P. Emergence of Z-Scheme Photocatalysis for Total Water Splitting: An Improvised Route to High Efficiency. J Phys Chem Lett 2024:6841-6851. [PMID: 38917061 DOI: 10.1021/acs.jpclett.4c01162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Photocatalytic water splitting to spontaneously produce H2 and O2 is a long-standing goal in solar energy conversion, presenting a significant challenge without using sacrificial electron donors or external biases. Inspired by natural photosynthesis, the design of artificial Z-scheme photocatalytic systems is at the forefront of this field. These systems achieve higher redox potential by separating photogenerated electrons and holes through a fast interlayer recombination process between valence and conduction band edges. Z-scheme photocatalysis involves using two different semiconductors with distinct bandgap energies. Here, we explore potential systems based on two-dimensional (2D) heterostructures composed of carbon, nitrogen, or similar main group elements. The advantages and disadvantages of these systems are discussed, with a focus on enhancing their efficiency through strategic design. Special emphasis is placed on the dynamics of excited charge carrier transfer and recombination processes, which are crucial for developing efficient photocatalytic systems for overall water splitting.
Collapse
Affiliation(s)
- Atish Ghosh
- Department of Chemistry, Visva-Bharati University, Santiniketan 731235, India
| | - Anup Pramanik
- Department of Chemistry, Sidho-Kanho-Birsha University, Purulia 723104, India
| | - Sougata Pal
- Department of Chemistry, University of Gour Banga, Malda 732103, India
| | - Pranab Sarkar
- Department of Chemistry, Visva-Bharati University, Santiniketan 731235, India
| |
Collapse
|
3
|
Truong HB, Doan TTL, Hoang NT, Van Tam N, Nguyen MK, Trung LG, Gwag JS, Tran NT. Tungsten-based nanocatalysts with different structures for visible light responsive photocatalytic degradation of bisphenol A. J Environ Sci (China) 2024; 139:569-588. [PMID: 38105077 DOI: 10.1016/j.jes.2023.09.028] [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] [Received: 06/13/2023] [Revised: 09/18/2023] [Accepted: 09/20/2023] [Indexed: 12/19/2023]
Abstract
Environmental pollution, such as water contamination, is a critical issue that must be absolutely addressed. Here, three different morphologies of tungsten-based photocatalysts (WO3 nanorods, WO3/WS2 nanobricks, WO3/WS2 nanorods) are made using a simple hydrothermal method by changing the solvents (H2O, DMF, aqueous HCl solution). The as-prepared nanocatalysts have excellent thermal stability, large porosity, and high hydrophilicity. The results show all materials have good photocatalytic activity in aqueous media, with WO3/WS2 nanorods (NRs) having the best activity in the photodegradation of bisphenol A (BPA) under visible-light irradiation. This may originate from increased migration of charge carriers and effective prevention of electron‒hole recombination in WO3/WS2 NRs, whereby this photocatalyst is able to generate more reactive •OH and •O2- species, leading to greater photocatalytic activity. About 99.6% of BPA is photodegraded within 60 min when using 1.5 g/L WO3/WS2 NRs and 5.0 mg/L BPA at pH 7.0. Additionally, the optimal conditions (pH, catalyst dosage, initial BPA concentration) for WO3/WS2 NRs are also elaborately investigated. These rod-like heterostructures are expressed as potential catalysts with excellent photostability, efficient reusability, and highly active effectivity in different types of water. In particular, the removal efficiency of BPA by WO3/WS2 NRs reduces by only 1.5% after five recycling runs and even reaches 89.1% in contaminated lake water. This study provides promising insights for the nearly complete removal of BPA from wastewater or different water resources, which is advantageous to various applications in environmental remediation.
Collapse
Affiliation(s)
- Hai Bang Truong
- Optical Materials Research Group, Science and Technology Advanced Institute, Van Lang University, Ho Chi Minh City, Viet Nam, E-mail: (Hai Bang Truong); Faculty of Applied Technology, School of Technology, Van Lang University, Ho Chi Minh City, Viet Nam
| | - Thi Thu Loan Doan
- The University of Da Nang, University of Science and Technology, 54 Nguyen Luong Bang, Da Nang, Viet Nam
| | - Nguyen Tien Hoang
- The University of Da Nang, University of Science and Education, 459 Ton Duc Thang St., Lien Chieu, Da Nang 550000, Viet Nam
| | - Nguyen Van Tam
- Institute of Veterinary Science and Technology, 31ha zone, Trau Quy, Gia Lam, Ha Noi 12400, Viet Nam
| | - Minh Kim Nguyen
- Institute of Veterinary Science and Technology, 31ha zone, Trau Quy, Gia Lam, Ha Noi 12400, Viet Nam.
| | - Le Gia Trung
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
| | - Jin Seog Gwag
- Department of Physics, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
| | - Nguyen Tien Tran
- Center for Advanced Chemistry, Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam; Faculty of Natural Sciences, Duy Tan University, 03 Quang Trung, Da Nang 550000, Viet Nam.
| |
Collapse
|
4
|
Li J, Duan Y, Wang L, Ma J. Preparation of core-shell structure Ag@TiO 2 plasma photocatalysts and reduction of Cr(VI): Size dependent and LSPR effect. ENVIRONMENTAL RESEARCH 2024; 248:118265. [PMID: 38266898 DOI: 10.1016/j.envres.2024.118265] [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: 10/23/2023] [Revised: 12/19/2023] [Accepted: 01/07/2024] [Indexed: 01/26/2024]
Abstract
The poor light absorption and low carrier separation efficiency of Titanium dioxide (TiO2) limit its further application. The introduction of plasma metal Ag have the potential to solve these drawbacks owing to its plasma resonance effect. Thus core-shell structure Ag@TiO2 plasma photocatalysts was prepared by using facile reduction method in this work. More specifically, Ag@TiO2 composite catalysts with different Ag loading amounts were prepared in the presence of surfactant PVP. Ag@TiO2 demonstrates excellent light absorption performance and photoelectric separation efficiency compared with pure TiO2. As a result, it displays excellent performance of Cr(VI) reduction under visible light. The optimal composite catalysts Ag@TiO2-5P achieves exceptional visible-light-driven photocatalytic Cr(VI) reduction efficiency of 0.01416 min-1 that is 2.29 times greater than pure TiO2. To investigate the role of PVP, we also synthesized Ag@TiO2-5 without PVP. The experimental results show that although Ag@TiO2-5 Cr(VI) reduction performance is superior to pure TiO2, it significantly decreases compared with Ag@TiO2-5P. The results of TEM and optoelectronic testing show that agglomeration of Ag particles leads to a decrease in the photoelectric separation efficiency of Ag@TiO2-5. The smaller Ag particles provide more active sites and demonstrating a stronger overall local surface plasmon resonance (LSPR) effect. DMPO spin-trapping ESR spectra testing indicates that ∙O2- and ∙OH are the main reactive species. This research provides a potential strategy to prepare Ag-based plasma photocatalysts for environment protection.
Collapse
Affiliation(s)
- Jiwen Li
- College of Science and Technology, Hebei Agricultural University, Huanghua 061100, PR China.
| | - Yaqian Duan
- College of Science and Technology, Hebei Agricultural University, Huanghua 061100, PR China
| | - Linlin Wang
- College of Science and Technology, Hebei Agricultural University, Huanghua 061100, PR China
| | - Jingjun Ma
- College of Science and Technology, Hebei Agricultural University, Huanghua 061100, PR China.
| |
Collapse
|
5
|
Rashid R, Shafiq I, Gilani MRHS, Maaz M, Akhter P, Hussain M, Jeong KE, Kwon EE, Bae S, Park YK. Advancements in TiO 2-based photocatalysis for environmental remediation: Strategies for enhancing visible-light-driven activity. CHEMOSPHERE 2024; 349:140703. [PMID: 37992908 DOI: 10.1016/j.chemosphere.2023.140703] [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: 07/28/2023] [Revised: 10/21/2023] [Accepted: 11/11/2023] [Indexed: 11/24/2023]
Abstract
Researchers have focused on efficient techniques for degrading hazardous organic pollutants due to their negative impacts on ecological systems, necessitating immediate remediation. Specifically, TiO2-based photocatalysts, a wide-bandgap semiconductor material, have been extensively studied for their application in environmental remediation. However, the extensive band gap energy and speedy reattachment of electron (e-) and hole (h+) pairs in bare TiO2 are considered major disadvantages for photocatalysis. This review extensively focuses on the combination of semiconducting photocatalysts for commercial outcomes to develop efficient heterojunctions with high photocatalytic activity by minimizing the e-/h+ recombination rate. The improved activity of these heterojunctions is due to their greater surface area, rich active sites, narrow band gap, and high light-harvesting tendency. In this context, strategies for increasing visible light activity, including doping with metals and non-metals, surface modifications, morphology control, composite formation, heterojunction formation, bandgap engineering, surface plasmon resonance, and optimizing reaction conditions are discussed. Furthermore, this review critically assesses the latest developments in TiO2 photocatalysts for the efficient decomposition of various organic contaminants from wastewater, such as pharmaceutical waste, dyes, pesticides, aromatic hydrocarbons, and halo compounds. This review implies that doping is an effective, economical, and simple process for TiO2 nanostructures and that a heterogeneous photocatalytic mechanism is an eco-friendly substitute for the removal of various pollutants. This review provides valuable insights for researchers involved in the development of efficient photocatalysts for environmental remediation.
Collapse
Affiliation(s)
- Ruhma Rashid
- Institute of Chemical Science, Bahauddin Zakariya University, Multan, Punjab, Pakistan
| | - Iqrash Shafiq
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan
| | | | - Muhammad Maaz
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan
| | - Parveen Akhter
- Department of Chemistry, The University of Lahore, 1-km Defence Road, Off Raiwind Road, Lahore, Pakistan
| | - Murid Hussain
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore, Pakistan.
| | - Kwang-Eun Jeong
- Chemical & Process Technology Division, Korea Research Institute of Chemical Technology (KRICT), P.O. Box 107, 141 Gajeong-ro, Yuseong, Daejeon, 34114, Republic of Korea
| | - Eilhann E Kwon
- Department of Earth Resources & Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Sungjun Bae
- Department of Civil & Environmental Engineering, Konkuk University, Seoul, 05029, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea.
| |
Collapse
|
6
|
Batoo KM, Ijaz MF, Imran A, Pandiaraj S. Duple charge separation and plasmonically enriched DSSC and piezo-photocatalytic efficacy of Au anchored perovskite Gd 3+:BiFeO 3 nanospheres. CHEMOSPHERE 2024; 346:140410. [PMID: 37898467 DOI: 10.1016/j.chemosphere.2023.140410] [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: 07/01/2023] [Revised: 09/25/2023] [Accepted: 10/09/2023] [Indexed: 10/30/2023]
Abstract
Enhancing the solar-physical conversion efficacy ability of the nanomaterials is an essential for real-time implementation. We report the enhanced solar-physical efficiency of the BiFeO3 nanospheres via Gd3+ doping and Au nanoparticles decoration. Initially, we have obtained the Bi1-xGdxFeO3 nanospheres were attained via a simple solvothermal technique and then citrate reduction of Au was conducted. Obtained perovskite BiFeO systems were studied for the Gd3+ doping, crystalline phase and elemental purity using the XRD and XPS techniques. Transmission electron microscope had revealed the ∼400 nm sized BiFeO3 nanospheres. Optical absorption spectrum revealed the enhanced visible photon absorption occurring in BiFeO3 for both Gd3+ doping and Au decoration. The bandgap values of pristine, 1%, 3% and 5% Gd3+ doped in BiFeO3 are 2.2 eV, 2.19 eV, 2.17 eV and 2.12 eV, respectively. Conducted photoluminescence revealed the dual electron trapping occurring in BiFeO3 via Gd3+ ions and Au nanoparticles. LED light assisted 72% of piezo-photocatalytic degradation efficiency of Tetracycline is achieved with Bi0 95Fe0 05O3/Au, whereas the photo catalytic is only 65% and piezo catalytic efficiency is 58%. In recyclable studies the Bi0.95Gd0.05FeO3/Au had shown the consistent piezo-photocatalytic efficiency for 3 reaction cycles. Further, fabricated DSSC studies revealed that near 30 % enhanced solar photovoltaic efficiency for Bi0 95Fe0 05O3/Au (η = 6.5%) solar cells on par to the pristine BiFeO3 (η = 5.02%).
Collapse
Affiliation(s)
- Khalid Mujasam Batoo
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia.
| | - Muhammad Farzik Ijaz
- Mechanical Engineering Department, College of Engineering, King Saud University, PO Box 800, Riyadh, 11451, Saudi Arabia
| | - Ahamad Imran
- King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - Saravanan Pandiaraj
- Department of Self-Development Skills, King Saud University, Riyadh, 11451, Saudi Arabia.
| |
Collapse
|
7
|
Parida VK, Srivastava SK, Chowdhury S, Gupta AK. Visible Light-Assisted Degradation of Sulfamethoxazole on 2D/0D Sulfur-Doped Bi 2O 3/MnO 2 Z-Scheme Heterojunction Immobilized Photocatalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:18846-18865. [PMID: 38095629 DOI: 10.1021/acs.langmuir.3c02733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Retrieving the spent photocatalysts from the reaction system is always a challenging task. Therefore, the present work is focused on immobilizing sulfur-doped-Bi2O3/MnO2 (S-BOMO) heterojunction photocatalysts over different support matrices and evaluating their performance for the removal of sulfamethoxazole (SMX) in water under visible light. Our findings revealed S-BOMO coated clay beads (S-BOMO CCB) achieving more than 86% (240 min) SMX degradation ∼3, ∼1.3, and ∼2 times higher compared to S-BOMO coated on the different substrates, including glass beads, floating stones, and polymer material substrates, respectively. Mott-Schottky measurements confirmed the construction of the Z-scheme heterojunction involving MnO2 and 2S-Bi2O3. This Z-scheme mechanism, along with its narrow band gap of 1.58 eV, resulted in a rapid spatial transfer of the photogenerated charge carriers between the semiconductors and is believed to enhance the overall photocatalytic activity of the nanocomposite. Radical trapping and electron paramagnetic resonance results clearly established the active role of hydroxyl radicals and hydrogen peroxide in the degradation of SMX. Further, the 2S-BOMO CCB demonstrated excellent stability and photocatalytic activity over multiple runs. According to the sensitivity analysis and the results of anion effect experiments, phosphate and sulfate ions exhibit a significant impact on sulfamethoxazole degradation. Toxicity analysis revealed that 2S-BOMO CCB and sulfamethoxazole degradation byproducts were apparently innocuous. Additionally, the practical applicability of 2S-BOMO CCB was examined in various real water matrices, with the degradation efficiency followed the order: tap water < groundwater < surface water < hospital wastewater < municipal wastewater < pharmaceutical industry wastewater. The economic assessment revealed the reduction in the overall cost of the immobilized 2S-BOMO following the recovery process. Overall, the findings of this work provided critical insights into the synthesis and performance of incredibly effective and stable immobilized photocatalysts for the degradation of pharmaceutical pollutants.
Collapse
Affiliation(s)
- Vishal Kumar Parida
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | | | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| |
Collapse
|
8
|
Wang L, Zhang K, Qian J, Qiu M, Li N, Du H, Hu X, Fu Y, Tan M, Hao D, Wang Q. S-scheme MOF-on-MOF heterojunctions for enhanced photo-Fenton Cr(VI) reduction and antibacterial effects. CHEMOSPHERE 2023; 344:140277. [PMID: 37769912 DOI: 10.1016/j.chemosphere.2023.140277] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 09/03/2023] [Accepted: 09/23/2023] [Indexed: 10/03/2023]
Abstract
The photocatalytic efficiency is commonly restrained by inferior charge separation rate. Herein, the S-scheme MIL-100(Fe)/NH2-MIL-125(Ti) (MN) photo-Fenton catalyst with the built-in electric field (BEF) was successfully constructed by a simple ball-milling technique. As a result, the MN-3 (the mass ratio of MIL-100(Fe) to NH2-MIL-125(Ti) was 3) composite presented the best visible-light-induced photocatalytic ability, in contrast to pure MIL-100(Fe) and NH2-MIL-125(Ti). The reduction efficiency of Cr(VI) almost reached 100% within 35 min of illumination. Moreover, the MN-3 heterojunction also exhibited the highest antibacterial activity, and about 100% E. coli and more than 90% S. aureus were killed within 60 min of illumination. In photo-Fenton system, In the photo-Fenton system, e-, O2•- and Fe2+ played vital roles for Cr(VI) reduction, and •OH, h+ and O2•- and 1O2 were responsible for sterilization. Additionally, 5 cyclic tests and relevant characterizations confirmed the excellent repeatability and stability of the composite. Also, the S-scheme charge transfer process was put forward. This work offers a novel idea for establishing the MOF-on-MOF photo-Fenton catalyst for high-efficiency environmental mitigation.
Collapse
Affiliation(s)
- Longyang Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Kejie Zhang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jianying Qian
- CCTEG Hangzhou Research Institute Co., Ltd., Hangzhou, Zhejiang, 310018, China
| | - Mengyi Qiu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Ningyi Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Hao Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.
| | - Xiao Hu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yangjie Fu
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Meng Tan
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Derek Hao
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Qi Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004, China
| |
Collapse
|
9
|
Tharani S, Rebecca PNB, Durgalakshmi D, Balakumar S, Rakkesh RA. Hydrothermal integration of MoO 2-MoS 2@rGO nanoframe networks: A promising approach for efficient bacterial disinfection in wastewater. CHEMOSPHERE 2023; 343:140273. [PMID: 37758069 DOI: 10.1016/j.chemosphere.2023.140273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/10/2023] [Accepted: 09/23/2023] [Indexed: 09/30/2023]
Abstract
The efficient disinfection of bacterial contaminants in wastewater is a critical challenge in the field of environmental remediation. Herein, we present a novel approach for efficient bacterial disinfection using hydrothermally integrated MoO2-MoS2@rGO nanoframe networks. The developed nanoframe networks exhibit a unique architecture comprising of molybdenum dioxide (MoO2) and molybdenum disulfide (MoS2) impregnated on algae biomass reduced graphene oxide (rGO). The as-synthesized nanoframe networks demonstrate exceptional antibacterial activity against Escherichia coli bacteria. The disinfection efficiency was evaluated by measuring the bacterial viability and observing the morphological changes using scanning electron microscopy. The MoO2-MoS2@rGO nanoframe networks exhibited a remarkable antibacterial effect, achieving a high disinfection rate of 95.8% within a short contact time of 10 min. The efficient bacterial disinfection capability of the nanoframe networks can be attributed to the synergistic effects of MoO2, MoS2, and rGO components. The MoO2 nanoparticles generate reactive oxygen species (ROS), persuading oxidative stress and leading to bacterial inactivation. The MoS2 nanoparticles possess inherent antibacterial properties through the release of Mo and S ions. The rGO nanosheets provide a conductive and stable platform, facilitating the charge transfer during the antibacterial process. Furthermore, the hydrothermal integration method enables easy scalability and cost-effectiveness of the MoO2-MoS2@rGO nanoframe networks. The nanoframe networks can be easily recovered and reused, reducing waste generation and promoting sustainability. Overall, this study presents a promising approach for efficient bacterial disinfection in wastewater using hydrothermally integrated MoO2-MoS2@rGO nanoframe networks. The remarkable antibacterial performance, along with the advantages of scalability and reusability, makes these nanoframe networks a potential candidate for practical applications in environmental remediation and water treatment processes.
Collapse
Affiliation(s)
- S Tharani
- Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur - 603203, TN, India
| | - P N Blessy Rebecca
- Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur - 603203, TN, India
| | - D Durgalakshmi
- Department of Medical Physics, Anna University, Chennai - 600 025, India
| | - S Balakumar
- National Centre for Nanoscience and Nanotechnology, University of Madras, Chennai - 600 025, India
| | - R Ajay Rakkesh
- Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur - 603203, TN, India.
| |
Collapse
|
10
|
K A, Natarajan S, S B. Assisted assembling of Bi 2WO 6/rGO composites: A 3D/2D Hierarchical nanostructures for enhanced photocatalytic water remediation and photo-(electro)catalytic water splitting proficiency. CHEMOSPHERE 2023; 345:140488. [PMID: 37898466 DOI: 10.1016/j.chemosphere.2023.140488] [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: 08/04/2023] [Revised: 10/02/2023] [Accepted: 10/17/2023] [Indexed: 10/30/2023]
Abstract
The current study explores the possibility of effectively improving Bi2WO6 (BWO) nanostructures in photocatalytic clean H2 generation and treating water from pharmaceutical wastes. BWO nanoparticles (NPs) hybridized with carbon-derived materials proved to be an efficient candidate in the field of photocatalysis. In this work, BWO nanostructures have been synthesized via the facile co-precipitation technique. The reduced graphene oxide (r-GO) was used as the carbon derivative for the hybridization process. Furthermore, different weight percentages of rGO were loaded with BWO NPs through the wet impregnation technique. The structural, and morphological analysis confirmed the formation of BWO/x% rGO composites. UV-DRS analysis showcased the reduction in bandgap in annexure with increased light absorbance region upon rGO inclusion. Time-resolved photoluminescence (TRPL) proved a prolonged lifetime for BWO/15% rGO composite. In addition, their photocatalytic abilities were put to the test, and BWO/15% rGO nano-hybrid demonstrated a superior degradation of pharmaceutical wastes like tetracycline hydrochloride (TCH) and levofloxacin (LVX) from water in 15 min. Furthermore, photo-electrochemical measurements showed the lowest onset potential and better charge transfer for efficient splitting of water. The photocatalytic water splitting was performed in the presence of sacrificial agents and in the absence of sacrificial agents, where BWO/15% rGO exhibited maximum H2 evolution.
Collapse
Affiliation(s)
- Annamalai K
- National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy campus, Tamilnadu, 600025, India
| | - Sasirekha Natarajan
- Catalysis Laboratory, Centre of Advanced Study in Crystallography & Biophysics, University of Madras, Chennai 600 025, Tamil Nadu, India
| | - Balakumar S
- National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy campus, Tamilnadu, 600025, India.
| |
Collapse
|
11
|
Li Q, Wang E, Zhou H, Fu Y, Deng H, Zheng Y, Xue B, Du H, Yang G, Wang Q, Sun Z, Zhou J. Accelerated electron and mass transfer through constructing H 2WO 4/Ti 3C 2/g-C 3N 4 Z-scheme photocatalyst for environmental remediation. CHEMOSPHERE 2023; 341:140053. [PMID: 37690558 DOI: 10.1016/j.chemosphere.2023.140053] [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: 06/16/2023] [Revised: 08/28/2023] [Accepted: 09/02/2023] [Indexed: 09/12/2023]
Abstract
The catalytic efficiency of photocatalysts highly depends on electron transport and mass transfer. Herein, we designed and prepared an effective H2WO4/Ti3C2/g-C3N4 (HTC) Z-scheme heterojunction through interfacial engineering strategy. The results manifested that 97.4% of Cr(VI) (80 μM, 50 mL) could be removed by HTC heterojunction within 10 min under visible light irradiation. The reduction rate constant of Cr(VI) for H2WO4/g-C3N4 (HC) heterojunction increased by a factor of 21 after introducing the conductive Ti3C2. Moreover, 96% of tetracycline (TC, 10 mg L-1, 50 mL) could be degraded by HTC heterojunction within 30 min. The electronic conductivity and ionic diffusion coefficient of HC heterojunction increased by a factor of 64 and 1064 after adding Ti3C2, respectively. This result indicated that the introduction of highly conductive Ti3C2 significantly improved the electron and mass transfer of the heterojunction. Meanwhile, the HCT heterojunction displayed favorable photocurrent, and keep excellent photostability during the long-term test. Moreover, density functional theory (DFT) calculations demonstrated that the internal electric field (IEF) from g-C3N4 to H2WO4 in HCT heterojunction promotes the combination of the photoinduced electrons in the H2WO4 conduction band (CB) with photoinduced holes in the g-C3N4 valence band (VB), thus accelerating the charge transfer in the HCT Z-scheme heterojunction. The antibacterial efficiency of HTC heterojunction against E. coli and S. aureus could reach up to 98.4% and 99.7%, respectively. The degradation intermediates and the potential degradation mechanism of TC were analyzed and proposed based on the results of HPLC-MS analysis. Moreover, the toxicity of TC and degradation intermediates were estimated by Toxicity Estimation Software (T.E.S.T.) based on quantitative structure-activity relationship (QSAR). This work provided a valuable guideline for designing the effective MXene-based Z-scheme heterojunction for environmental remediation.
Collapse
Affiliation(s)
- Qiang Li
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Erpeng Wang
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Hao Zhou
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yangjie Fu
- Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hao Deng
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yazhuo Zheng
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Biao Xue
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Hao Du
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Guoxiang Yang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qi Wang
- School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China.
| | - Zhimei Sun
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China.
| | - Jian Zhou
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China.
| |
Collapse
|
12
|
Ghalayani Esfahani A, Sartori M, Bregoli C, Fiocchi J, Biffi CA, Tuissi A, Giavaresi G, Presentato A, Alduina R, De Luca A, Cabrini A, De Capitani C, Fini M, Gruppioni E, Lavorgna M, Ronca A. Bactericidal Activity of Silver-Doped Chitosan Coatings via Electrophoretic Deposition on Ti 6Al 4V Additively Manufactured Substrates. Polymers (Basel) 2023; 15:4130. [PMID: 37896373 PMCID: PMC10610813 DOI: 10.3390/polym15204130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/13/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
Prosthetic reconstruction can serve as a feasible alternative, delivering both functional and aesthetic benefits to individuals with hand and finger injuries, frequent causes of emergency room visits. Implant-related infections pose significant challenges in arthroplasty and osteosynthesis procedures, contributing to surgical failures. As a potential solution to this challenge, this study developed a new class of silver (Ag)-doped chitosan (CS) coatings via electrophoretic deposition (EPD) on osseointegrated prostheses for infection therapy. These coatings were successfully applied to additively manufactured Ti6Al4V ELI samples. In the initial phase, the feasibility of the composite coating was assessed using the Thermogravimetric Analysis (TGA) and Attenuated Total Reflection (ATR) techniques. The optimized structures exhibited impressive water uptake in the range of 300-360%. Codeposition with an antibacterial agent proved effective, and scanning electron microscopy (SEM) was used to examine the coating morphology. Biologically, CS coatings demonstrated cytocompatibility when in direct contact with a fibroblast cell line (L929) after 72 h. When exposed to the Staphylococcus epidermidis strain (ATCC 12228), these coatings inhibited bacterial growth and biofilm formation within 24 h. These findings underscore the significant potential of this approach for various applications, including endoprostheses like hip implants, internal medical devices, and transcutaneous prostheses such as osseointegrated limb prosthetics for upper and lower extremities.
Collapse
Affiliation(s)
- Arash Ghalayani Esfahani
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (A.C.); (C.D.C.); (M.L.); (A.R.)
| | - Maria Sartori
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano, 1/10, 40136 Bologna, Italy; (M.S.); (G.G.); (A.D.L.)
| | - Chiara Bregoli
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (C.B.); (J.F.); (C.A.B.); (A.T.)
| | - Jacopo Fiocchi
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (C.B.); (J.F.); (C.A.B.); (A.T.)
| | - Carlo Alberto Biffi
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (C.B.); (J.F.); (C.A.B.); (A.T.)
| | - Ausonio Tuissi
- Institute of Condensed Matter Chemistry and Technologies for Energy (ICMATE), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (C.B.); (J.F.); (C.A.B.); (A.T.)
| | - Gianluca Giavaresi
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano, 1/10, 40136 Bologna, Italy; (M.S.); (G.G.); (A.D.L.)
| | - Alessandro Presentato
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Bd. 16, 90128 Palermo, Italy; (A.P.); (R.A.)
| | - Rosa Alduina
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Viale delle Scienze, Bd. 16, 90128 Palermo, Italy; (A.P.); (R.A.)
| | - Angela De Luca
- Surgical Sciences and Technologies, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano, 1/10, 40136 Bologna, Italy; (M.S.); (G.G.); (A.D.L.)
| | - Alessia Cabrini
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (A.C.); (C.D.C.); (M.L.); (A.R.)
| | - Cristina De Capitani
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (A.C.); (C.D.C.); (M.L.); (A.R.)
| | - Milena Fini
- Scientific Directorate, IRCCS Istituto Ortopedico Rizzoli, Via Di Barbiano, 1/10, 40136 Bologna, Italy;
| | - Emanuele Gruppioni
- INAIL Centro Protesi, Via Rabuina 14, Vigorso di Budrio, 40054 Bologna, Italy;
| | - Marino Lavorgna
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (A.C.); (C.D.C.); (M.L.); (A.R.)
| | - Alfredo Ronca
- Institute for Polymers, Composites and Biomaterials (IPCB), National Research Council (Consiglio Nazionale delle Ricerche) (CNR), Via Gaetano Previati, 1/E, 23900 Lecco, Italy; (A.C.); (C.D.C.); (M.L.); (A.R.)
| |
Collapse
|