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Ren Z, Zhang C, Chen J, Zhang H, Meng J, Han X, Liang J. Highly efficient recovery of Zn (II) from zinc-containing wastewater by tourmaline tailings geopolymers to in-situ construct nanoscale ZnS for the photodegradation of tetracycline hydrochloride. ENVIRONMENTAL RESEARCH 2024; 259:119504. [PMID: 38945514 DOI: 10.1016/j.envres.2024.119504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 06/12/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
While treating zinc-containing wastewater, recovering zinc for reuse as a secondary resource has significant environmental and economic benefits. Herein, based on the alkali-activated tourmaline tailings geopolymers (TTG) after adsorption of zinc ions (Zn (II)), a series of new composites with in-situ construction ZnS nanoparticles on TTG (ZnS/TTG) were synthesized, and used as photocatalysts for the photodegradation of tetracycline hydrochloride (TCH) in solution. Specifically, ZnS nanoparticles were uniformly and stably distributed in the layered structure of TTG, interweaving with each other to generate an interfacial electric field, which could induce more photocarrier generation. Meanwhile, TTG acted as an electron acceptor to accelerate the electron transfer at the interface, thus enhancing the photodegradation activity for TCH. The active radical quenching experiments combined with the ESR indicated that the active species produced during the photocatalytic degradation of TCH by ZnS/TTG composites were •O2- and photogenerated h+. When the initial concentration of Zn (II) was 60 mg/L, the synthesized 60-ZnS/TTG composites (0.5 g/L) reached 91.53% degradation efficiency of TCH (10 mg/L) at pH = 6. Furthermore, the possible pathways and mechanism of 60-ZnS/TTG composites photodegraded TCH were revealed with the aid of degraded intermediates. This report not only proposed valuable references for reusing heavy metal ions and removing TCH from wastewater, but also provided promising ideas for realizing the conversion of used adsorbents into high-efficiency photocatalysts.
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Affiliation(s)
- Zhixiao Ren
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Caihong Zhang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Jinpeng Chen
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Hong Zhang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Junping Meng
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China
| | - Xiaoyu Han
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.
| | - Jinsheng Liang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information, Hebei University of Technology, Ministry of Education, Tianjin, China; Institute of Power Source and Ecomaterials Science, School of Materials Science and Engineering, Hebei University of Technology, Tianjin, China.
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2
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Zhou Q, Ji Z, Yu H, Lu S, Guo J, Wu C. Photocatalytic Degradation of Tetracycline Hydrochloride Based on the Structure-Property Exploration of BiOCl. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:7078-7086. [PMID: 38514080 DOI: 10.1021/acs.langmuir.4c00203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
The correlation between structure and properties in the photodegradation reaction of bismuth oxychloride (BiOCl) was explored in this work. Three BiOCl samples with different sizes, morphological structures, and defects were prepared through a hydrothermal method with experimental manipulation. Their structural properties were comprehensively characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, electron spin resonance, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, and photoluminescence. Taking the photodegradation of tetracycline hydrochloride (TC-HCl) as the probe reaction, we found that high activity could be achieved by decreasing their crystal size and thickness, introducing proper defects in the structure, and assembling the nanosheets to get microball structure. Combined with radical-scavenge experiments and electron spin resonance (ESR) spin-trap spectra, we conclude that ̇O2- was the dominant reactive oxygen species for the degradation reaction. The degradation detailed pathway of TC-HCl was further analyzed using liquid chromatography-mass spectrometry. This work explores the structure-property correlation of BiOCl and provides strategies for the rational design of active photocatalysts for water remediation.
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Affiliation(s)
- Quan Zhou
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Zhefeng Ji
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Hongbo Yu
- Institute of Materials, Ningbo University of Technology, Ningbo 315016, China
| | - Shun Lu
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Jianzhong Guo
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Chunzheng Wu
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
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Wu B, Wang C, Wang Z, Shen K, Wang K, Li G. Coupling Z-Scheme g-C 3N 4/rGO/MoS 2 Ternary Heterojunction as an Efficient Visible Light Photocatalyst for Hydrogen Evolution and RhB Degradation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1931-1940. [PMID: 38214273 DOI: 10.1021/acs.langmuir.3c03685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Coupling heterostructures to synergistically improve the light adsorption and promote the charge carrier separation has been regarded as an operative approach to advance the photocatalytic performances. However, it is still challenging to construct heterostructures with appropriate optical properties and interfacial energy structures at the same time. In this work, a Z-scheme g-C3N4/rGO/MoS2 ternary composite photocatalyst is successfully synthesized via an effective hydrothermal method. The as-synthesized g-C3N4/rGO/MoS2 composite photocatalyst exhibited significant improvement for visible light absorption and boosted the separation efficiency of photoinduced electron-hole pairs. The g-C3N4/rGO/MoS2 system exhibited optimum visible-light-induced photocatalytic activity in hydrogen (H2) from water splitting and degrading pollutant rhodamin B (RhB), which is 22 times and 5 times higher than that of pure g-C3N4, respectively. The excellent photocatalytic activities are attributed to the synergetic effects of coupling rGO, g-C3N4, and MoS2 ternary structures to the composite photocatalyst. These combinations of intimate two-dimensional nanoconjugations can effectively inhibit charge recombination and accelerate charge transfer kinetics, forming a Z-scheme-assisted photocatalytic mechanism, thereby exhibiting superior photocatalytic activity.
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Affiliation(s)
- Bo Wu
- Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan 030024, China
| | - Congwei Wang
- CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Zheyan Wang
- Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan 030024, China
| | - Kai Shen
- Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan 030024, China
| | - Kaiying Wang
- Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan 030024, China
- Department of Microsystems, University of South-Eastern Norway, Horten, 3184, Norway
| | - Gang Li
- Institute of Energy Innovation, Taiyuan University of Technology, Taiyuan 030024, China
- College of Physics and Information Engineering, Minnan Normal University, Zhangzhou 361000, China
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4
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Tao Y, Luo Q, Shen L, Hong F, Pun EYB, Lin H. Swallowed Embedding of Nanopetal-Rich Microflowers in Flexible Photocatalytic and Thermoresponsive Functional Composite Fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1825-1839. [PMID: 38180481 DOI: 10.1021/acs.langmuir.3c03164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Developing efficient catalysts to degrade pollutants in water is a very important way to alleviate water pollution. However, it is crucial but challenging to broaden the functions of conventional photocatalysts and improve their environmental adaptability. In this paper, Bi(Er3+/Yb3+)OBr/polyacrylonitrile (BOB-EY/PAN) composite fibers with a swallowed-embedded structure assembled with nanopetal-rich microflowers were designed and fabricated, integrating photocatalytic and temperature-monitoring functions simultaneously. Their unique structure brings a large specific surface area, and the doping of rare earth ions improves the separation efficiency of electron-hole pairs, which enhances the photocatalytic efficiency and endows the fibers with a temperature-monitoring function at the same time. Under simulated sunlight irradiation, the nanofibers show a maximum degradation efficiency of 99.2% for tetracycline hydrochloride (TC) with a degradation constant of K as high as 0.078 min-1. Based on the fluorescence intensity ratio (FIR), the two thermally coupled levels of Er3+ in the nanofibers, 2H11/2 and 4S3/2, provide real-time temperature feedback, displaying a maximum relative sensitivity as high as 0.0215 K-1 at 303 K. Dual-functional BOB-EY/PAN composite nanofibers show great potential for industrial wastewater disposition, providing solutions for wastewater purification in special scenarios.
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Affiliation(s)
- Yahui Tao
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Qian Luo
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Lifan Shen
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
- College of Microelectronics and Key Laboratory of Optoelectronics Technology, Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P. R. China
| | - Feng Hong
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
| | - Edwin Yue Bun Pun
- Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon 999077, Hong Kong Special Administrative Region, P. R. China
| | - Hai Lin
- School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P. R. China
- Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong, Kowloon 999077, Hong Kong Special Administrative Region, P. R. China
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5
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Dou Y, Gao Y, Gu D, Zheng J, Zhang B, Li X, He M, Zou Q, Liao T, Ding F, Sun Y, Xu Z. Composites of W 18O 49 Nanowires with g-C 3N 4/RGO Nanosheets for Broadband Light-Driven Photocatalytic Wastewater Purification. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 38038632 DOI: 10.1021/acs.langmuir.3c02640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Developing a photocatalyst that can effectively utilize the full solar spectrum remains a high-priority objective in the ongoing pursuit of efficient light-to-chemical energy conversion. Herein, the ternary nanocomposite g-C3N4/RGO/W18O49 (CN/RGO/WO) was constructed and characterized by a variety of techniques. Remarkably, under the excitation of photon energies ranging from the ultraviolet (UV) to the near-infrared (NIR) region, the photocatalytic performance of the CN/RGO/WO nanocomposite exhibited a significant enhancement compared with single component g-C3N4 or W18O49 nanosheets for the degradation of methyl orange (MO). The MO photodegradation rate of the optimal CN/1.0 wt% RGO/45.0 wt% WO catalyst reached 0.816 and 0.027 min-1 under UV and visible light excitation, respectively. Even under low-energy NIR light, which is not sufficient to excite g-C3N4, the MO degradation rate can still reach 0.0367 h-1, exhibiting a significant enhancement than pure W18O49. The outstanding MO removal rate and stability were demonstrated by CN/RGO/WO nanocomposites, which arise from the synergistic effect of localized surface plasmon resonance effect induced by W18O49 under vis-NIR excitation and the Z-scheme nanoheterojunction of W18O49 and g-C3N4. In this work, we have exploited the great potential of integrating nonmetallic plasmonic nanomaterials and good conductor RGO to construct high-performance g-C3N4-based full-solar spectral broadband photocatalysts.
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Affiliation(s)
- Yanting Dou
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Yu Gao
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Deng Gu
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Jiqi Zheng
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Bo Zhang
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - XiuXin Li
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Meijia He
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Qinglong Zou
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Tiaoli Liao
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
| | - Fu Ding
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Yaguang Sun
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology, Shenyang 110142, P. R. China
| | - Zhenhe Xu
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning 116622, P. R. China
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Teng R, Jiang J, Shi D, Li H. Synthesis of Acid Mine Drainage (AMD) Sludge-Derived Al-Fe 3O 4 as Fenton-like Catalysts for the Efficient Degradation of Tetracycline. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14275-14283. [PMID: 37625249 DOI: 10.1021/acs.langmuir.3c01555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
In recent years, the development of environmentally friendly solid catalysts derived from sludge for the efficient removal of pollutants from wastewater has triggered widespread attention. Acid mine drainage (AMD) sludge is a waste produced in the process of acid mine wastewater treatment and contains multitudes of valuable metal resources. Hence it provides the original conditions for the synthesis of metal-based Fenton catalysts. In this article, the Fenton-like catalyst Al-Fe3O4 derived from AMD sludge was first synthesized by acid leaching coprecipitation methods, and the relationship among catalyst properties and pH, growth temperature, and growth time during coprecipitation was explored. Transmission electron microscope (TEM)/vibrating sample magnetometer (VSM)/particulate size description analyzer (DLS) results showed that the Al-Fe3O4 catalyst with high purity, large particle size, and strong magnetic properties was obtained under the conditions of pH 10, reaction temperature 60 °C, and growth for 45 min. In addition, the introduction of Al active sites promoted the activation of H2O2 and improved the catalytic activity of Al-Fe3O4, and the degradation efficiency of tetracycline was up to 93.9% within 60 min, which was 1.94 times that of pure Fe3O4. Moreover, Al-Fe3O4 exhibited excellent recyclability after four adsorption-desorption cycles. Hence, this study is expected to promote the resource utilization of industrial sludge and provide a new idea for the rapid removal of TC from aqueous solution.
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Affiliation(s)
- Ran Teng
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jinyuan Jiang
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Dongni Shi
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Huiling Li
- Research Center of Environmental Pollution Control Engineering Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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7
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Berekute AK, Yu KP, Chuang YHB, Lin KYA. Novel visible-light-active P-g-CN-based α-Bi 2O 3/WO 3 ternary photocatalysts with a dual Z-scheme heterostructure for the efficient decomposition of refractory ultraviolet filters and environmental hormones: Benzophenones. ENVIRONMENTAL RESEARCH 2023; 234:116553. [PMID: 37406722 DOI: 10.1016/j.envres.2023.116553] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/24/2023] [Accepted: 07/02/2023] [Indexed: 07/07/2023]
Abstract
The ubiquitous and refractory benzophenone (BP)-type ultraviolet filters, which are also endocrine disruptors, were commonly detected in the aquatic matrix and could not be efficiently removed by conventional wastewater treatment processes, thus causing extensive concern. Herein, a novel ternary nanocomposite, P-g-CN/α-Bi2O3/WO3 (P-gBW), was successfully fabricated by mixing cocalcinated components and applied to the decomposition of BP-type ultraviolet filters. The dual-Z-scheme heterostructure of P-gBW enhances visible-light absorption, efficiently facilitates separation and mobility, and prolongs the lifetime of photoinduced charge carriers via double charge transfer mechanisms. The optimum 95 wt% P-gBW exhibited excellent photocatalytic activity, degrading 96% 4-hydroxy benzophenone (4HBP) within 150 min and 93% 2,2',4,4'-tetrahydroxybenzophenone (BP-2) within 100 min under visible-light illumination, respectively. The pseudo-first-order rate constant of 4HBP (1.15 h-1) was 6.8-, 3.1-, 3.3- and 2.2-fold higher than those of WO3, P-g-CN, α-Bi2O3, and P-g-CN/α-Bi2O3, respectively, while that of BP-2 (1.71 h-1) was 5.2-, 2.2-, 3.2- and 1.5-fold higher, respectively. The improved photocatalytic degradation was attributed to efficient photoinduced charge carrier separation and migration and prevented the recombination of electron holes, as verified by photoluminescence, transient photocurrent response, and electrochemical impedance spectroscopy. Trapping experiments, electron paramagnetic resonance, and band energy position indicated an efficient dual-Z-scheme heterostructure.
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Affiliation(s)
- Abiyu Kerebo Berekute
- International Ph.D. Program in Environmental Science and Technology, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Department of Chemistry, College of Natural and Computational Sciences, Arba Minch University, Arbaminch, Ethiopia
| | - Kuo-Pin Yu
- International Ph.D. Program in Environmental Science and Technology, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan; Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, 11221, Taiwan.
| | - Yi-Hsueh Brad Chuang
- Institute of Environmental Engineering, National Yang Ming Chiao Tung University, Hsinchu City, 30010, Taiwan
| | - Kun-Yi Andrew Lin
- Department of Environmental Engineering and Innovation and Development Center of Sustainable Agriculture & Research Center of Sustainable Energy and Nano Technology, National Chung Hsing University, 250, Kuo-Kuang Road, Taichung, Taiwan
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8
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Patra R, Dash P, Panda PK, Yang PC. A Breakthrough in Photocatalytic Wastewater Treatment: The Incredible Potential of g-C 3N 4/Titanate Perovskite-Based Nanocomposites. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2173. [PMID: 37570490 PMCID: PMC10421126 DOI: 10.3390/nano13152173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 08/13/2023]
Abstract
Water pollution has emerged as a major global environmental crisis due to the massive contamination of water resources by the textile dyeing industry, organic waste, and agricultural residue. Since water is fundamental to life, this grave disregard puts lives at risk, making the protection of water resources a serious issue today. Recent research has shown great interest in improving the photocatalytic performance of graphitic carbon nitride (g-C3N4) for wastewater treatment. However, the photocatalytic removal activity of pure g-C3N4 is poor, owing to its minimal surface area, fast recombination of photo-generated electron-hole pairs, and poor light absorption. Recently, titanate perovskites (TNPs) have attracted significant attention in both environmental remediation and energy conversion due to their exceptional structural, optical, physiochemical, electrical, and thermal properties. Accordingly, TNPs can initiate a variety of surface catalytic reactions and are regarded as an emerging category of photocatalysts for sustainability and energy-related industries when exposed to illumination. Therefore, in this review article, we critically discuss the recent developments of extensively developed g-C3N4/TNPs that demonstrate photocatalytic applications for wastewater treatment. The different synthetic approaches and the chemical composition of g-C3N4/TNP composites are presented. Additionally, this review highlights the global research trends related to these materials. Furthermore, this review provides insight into the various photocatalytic mechanisms, including their potential impact and significance. Also, the challenges faced by such materials and their future scope are discussed.
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Affiliation(s)
- Rashmiranjan Patra
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
| | - Pranjyan Dash
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology (Taipei Tech), Taipei 10608, Taiwan;
| | - Pradeep Kumar Panda
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
| | - Po-Chih Yang
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan 32003, Taiwan;
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Gnanaguru MVL, Naushad M, Tatarchuk T, Ghangrekar MM, Chowdhury S. One-step calcination synthesis of 2D/2D g-C 3N 4/WS 2 van der Waals heterojunction for visible light-induced photocatalytic degradation of pharmaceutical pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27714-7. [PMID: 37271787 DOI: 10.1007/s11356-023-27714-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/13/2023] [Indexed: 06/06/2023]
Abstract
It is well-documented that accumulation of pharmaceutically active compounds (PhACs), such as antibiotics, in aquatic ecosystems is a prominent environmental hazard. Herein, a series of 2D materials-based heterojunctions, conceptualized based on the integration of graphitic carbon nitride (g-C3N4) with tungsten disulfide (WS2), was fabricated through a facile one-step calcination process, and systematically evaluated for eliminating tetracycline (TC) and sulfamethoxazole (SMX) from aqueous matrices. The microstructure, optical properties, and surface chemistry of the as-prepared composites were examined with a range of microscopy and spectroscopy techniques. In comparison with pristine g-C3N4 or bare WS2, the g-C3N4/WS2 material, with optimal WS2 loading, showed significantly improved photocatalytic activity, towards degradation of TC (84%) and SMX (96%), under visible light. Free radical scavenging experiments revealed that superoxide anions and hydroxyl radicals were predominantly responsible for the rapid breakdown of the PhACs. In addition, the dissociation intermediates and residues were identified and the plausible photocatalytic degradation pathways of TC and SMX over the as-constructed 2D/2D heterojunction were discussed. Further, the photocatalysis end products were non-toxic, as inferred via the resazurin cell viability assay, employing Escherichia coli as a model organism. Most importantly, the 2D/2D g-C3N4/WS2 architecture was structurally resilient and exhibited a fairly stable cycling performance for persistent usage in wastewater treatment. The outcomes of this study testify that 2D/2D heterojunction of g-C3N4 fragments and WS2 nanosheets holds great promise for destroying antibiotics or their metabolites, usually present in wastewaters.
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Affiliation(s)
- Mario Vino Lincy Gnanaguru
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Mu Naushad
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Tetiana Tatarchuk
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa, 2, 30-387, Kraków, Poland
| | - Makarand M Ghangrekar
- Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
| | - Shamik Chowdhury
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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Lou T, Xu C, Guo Q, Song S, Wang Y, Gao X, Li Q. Hydroxyl-/Carboxyl-Rich Graphitic Carbon Nitride/Graphene Oxide Composites for Efficient Photodegradation of Reactive Red 195 and Antibacterial Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:142-154. [PMID: 36579802 DOI: 10.1021/acs.langmuir.2c02294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
In this work, a protonated graphitic carbon nitride (P-g-C3N4)-coated graphene oxide (GO) composite (GO/P-g-C3N4) was prepared via wet-chemistry exfoliation, followed by a freeze-drying process. The GO/P-g-C3N4 composite was found to have an outstanding photodegradation performance effect on the reactive red 195 (RR195) dye and very strong antibacterial properties. Both the GO structure and the dispersed state of P-g-C3N4 were found to play a significant role in enhancing the photocatalytic activity of GO/P-g-C3N4. The GO/P-g-C3N4 obtained via freeze-drying retained a large number of oxygen-containing groups and showed higher catalytic activity and reusability than the reduced GO (rGO)/g-C3N4 obtained via thermal reduction. Characterization of the samples indicates that GO/P-g-C3N4 has a higher specific surface area and photocurrent density than rGO/g-C3N4; it is likely that these properties lead to the superior photocatalytic activity observed in GO/P-g-C3N4. Adsorption energy calculations indicate that O2 can be readily adsorbed onto the GO surface, which results in stronger oxidizing superoxide anion radicals (•O2-) and holes (h+); these active radicals can rapidly degrade RR195 dyes. Moreover, broad-spectrum antibacterial activity (demonstrated against Staphylococcus aureus and Escherichia coli) was observed in the case of the GO/P-g-C3N4 composite irradiated with visible light. This work offers new insights into the design of cost-effective g-C3N4-based photocatalysts for environmental remediation.
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Affiliation(s)
- Tingfei Lou
- Department of Textile and Clothing, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Chenqi Xu
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Qiyang Guo
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Shizhu Song
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Yanqing Wang
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Xiaohong Gao
- Department of Textile and Clothing, Nantong University, Nantong, 226019Jiangsu, P. R. China
| | - Qi Li
- Department of Chemical Engineering, School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019Jiangsu, P. R. China
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Efficient heterostructure of CuS@BiOBr for pollutants removal with visible light assistance. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.110212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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