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Khan MSJ, Mohd Sidek L, Kamal T, Khan SB, Basri H, Zawawi MH, Ahmed AN. Catalytic innovations: Improving wastewater treatment and hydrogen generation technologies. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120228. [PMID: 38377746 DOI: 10.1016/j.jenvman.2024.120228] [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: 10/31/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/22/2024]
Abstract
The effective reduction of hazardous organic pollutants in wastewater is a pressing global concern, necessitating the development of advanced treatment technologies. Pollutants such as nitrophenols and dyes, which pose significant risks to both human and aquatic health, making their reduction particularly crucial. Despite the existence of various methods to eliminate these pollutants, they are not without limitations. The utilization of nanomaterials as catalysts for chemical reduction exhibits a promising alternative owing to their distinguished catalytic activity and substantial surface area. For catalytically reducing the pollutants NaBH4 has been utilized as a useful source for it because it reduces the pollutants quiet efficiently and it also releases hydrogen gas as well which can be used as a source of energy. This paper provides a comprehensive review of recent research on different types of nanomaterials that function as catalysts to reduce organic pollutants and also generating hydrogen from NaBH4 methanolysis while also evaluating the positive and negative aspects of nanocatalyst. Additionally, this paper examines the features effecting the process and the mechanism of catalysis. The comparison of different catalysts is based on size of catalyst, reaction time, rate of reaction, hydrogen generation rate, activation energy, and durability. The information obtained from this paper can be used to steer the development of new catalysts for reducing organic pollutants and generation hydrogen by NaBH4 methanolysis.
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Affiliation(s)
| | - Lariyah Mohd Sidek
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Tahseen Kamal
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Sher Bahadar Khan
- Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia
| | - Hidayah Basri
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Mohd Hafiz Zawawi
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; Department of Civil Engineering, College of Engineering, Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia
| | - Ali Najah Ahmed
- Institute of Energy Infrastructure (IEI), Universiti Tenaga Nasional (UNITEN), 43000, Selangor, Malaysia; School of Engineering and Technology, Sunway University, Bandar Sunway, Petaling Jaya, 47500, Malaysia.
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Saravanan A, Ragini YP, Kumar PS, Thamarai P, Rangasamy G. A critical review on the removal of toxic pollutants from contaminated water using magnetic hybrids. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:105099-105118. [PMID: 37740158 DOI: 10.1007/s11356-023-29811-z] [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: 02/14/2023] [Accepted: 09/06/2023] [Indexed: 09/24/2023]
Abstract
The persistence of organic/inorganic pollutants in the water has become a serious environmental issue. Among the different pollutants, dyes and heavy metal pollution in waterways are viewed as a global ecological problem that can have an impact on humans, plants, and animals. The necessity to develop a sustainable and environmentally acceptable approach to remove these toxic contaminants from the ecosystem has been raised. In the past two decades, rapid industrialization and anthropogenic activities in developed countries have aggravated environmental pollution. Industrial effluents that are discharged directly into the natural environment taint the water, which has a consequence for the water resources. Magnetic nanohybrids are broadly investigated materials used in the adsorption and photocatalytic degradation of poisonous pollutants present across water effluents. In the present review, the toxic health effects of heavy metals and dyes from the water environment have been discussed. This paper reviews the role of magnetic nanohybrids in the removal of pollutants from the water environment, providing an adequate point of view on their new advances regarding their qualities, connection methodologies, execution, and their scale-up difficulties.
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Affiliation(s)
- Anbalagan Saravanan
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | | | - Ponnusamy Senthil Kumar
- Centre for Pollution Control and Environmental Engineering, Pondicherry University, Chinna Kalapet, Puducherry-605014, India.
| | - Packiyam Thamarai
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - Gayathri Rangasamy
- School of Engineering, Lebanese American University, Byblos, Lebanon
- University Centre for Research and Development & Department of Civil Engineering, Chandigarh University, Gharuan, Mohali, Punjab, 140413, India
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3
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Dey AK, Mishra SR, Ahmaruzzaman M. Solar light-based advanced oxidation processes for degradation of methylene blue dye using novel Zn-modified CeO 2@biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:53887-53903. [PMID: 36867337 DOI: 10.1007/s11356-023-26183-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/24/2023] [Indexed: 06/19/2023]
Abstract
Herein, a novel nanocomposite, namely, Zn-modified CeO2@biochar (Zn/CeO2@BC), is synthesized via facile one-step sol-precipitation to study its photocatalytic activity towards the removal of methylene blue dye. Firstly, Zn/Ce(OH)4@biochar was precipitated by adding sodium hydroxide to cerium salt precursor; then, the composite was calcined in a muffle furnace to convert Ce(OH)4 into CeO2. The crystallite structure, topographical and morphological properties, chemical compositions, and specific surface area of the synthesized nanocomposite are characterized by XRD, SEM, TEM, XPS, EDS, and BET analysis. The nearly spherical Zn/CeO2@BC nanocomposite has an average particle size of 27.05 nm and a specific surface area of 141.59 m2/g. All the tests showed the agglomeration of Zn nanoparticles over the CeO2@biochar matrix. The synthesized nanocomposite showed remarkable photocatalytic activity towards removing methylene blue, an organic dye commonly found in industrial effluents. The kinetics and mechanism of Fenton-activated dye degradation were studied. The nanocomposite exhibited the highest degradation efficiency of 98.24% under direct solar irradiation of 90 min, at an optimum dosage of 0.2 g l-1 catalyst and 10 ppm dye concentration, in the presence of 25% (V/V) 0.2 ml (4 µl/ml) hydrogen peroxide. The hydroxyl radical generated from H2O2 during the photo-Fenton reaction process was attributed to the nanocomposite's improved photodegradation performance. The degradation process followed pseudo-first-order kinetics having a rate constant (k) value of 0.0274 min-1.
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Affiliation(s)
- Akshay Kumar Dey
- Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India
| | - Soumya Ranjan Mishra
- Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India.
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Bhuyan A, Ahmaruzzaman M. Recent advances in new generation nanocomposite materials for adsorption of pharmaceuticals from aqueous environment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:39377-39417. [PMID: 36752919 DOI: 10.1007/s11356-023-25707-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
With rapid increase in the human population, a large amount of wastewater is generated every year. The availability of fresh water is decreasing at an alarming rate due to rapid industrialization and agricultural development. Pharmaceutical drugs which are credited for improving standards of life worldwide have emerged as major water contaminants, raising global concern about their potential risk to human health and environment. The presence of pharmaceutical compounds is detected in surface water (sea, river, lakes, etc.), groundwater, effluents from municipal, hospitals, and wastewater treatment plants, and even in drinking water. Efficient removal of pharmaceutical pollutants still remains a challenging task. Many techniques, including photodegradation, photocatalysis, oxidation, reverse osmosis, biodegradation, nanofiltration, adsorption, etc., have been used for the remediation of wastewater. Adsorption of pharmaceutical compounds on nanoadsorbents, as a low-cost and feasible technology, has gained immense popularity for wastewater treatment over the last decade. Adsorption techniques can be integrated with wastewater treatment plants to achieve efficient removal on an industrial level. Herein, we review the literature on the remediation techniques used for the pharmaceutical waste treatment using carbon nanotubes, metal oxides, nanoclay, and new-generation MXenes via adsorption. These materials show excellent adsorptive properties owing to their high surface area, low cost, high porosity, easy functionalization, and high surface reactivity. The adsorption mechanism of the nanoadsorbents and their reusability as a factor of sustainability have also been included in the review. The factors affecting the adsorption, including pH, the concentration of adsorbate, ionic strength, and adsorbate dose, have also been discussed.
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Affiliation(s)
- Anindita Bhuyan
- Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, 788010, Assam, India.
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Mittal H, Ivaturi A, Khanuja M. MoSe 2-modified ZIF-8 novel nanocomposite for photocatalytic remediation of textile dye and antibiotic-contaminated wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:4151-4165. [PMID: 35963971 PMCID: PMC9376053 DOI: 10.1007/s11356-022-22487-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 08/07/2022] [Indexed: 06/15/2023]
Abstract
COVID-19-led antibiotic waste generated from hospitals and health centres may cause serious health issues and significantly impact the environment. In the coming decades, antibiotic resistance will be one of the most significant threats to global human health. Photocatalytic water remediation is an effective and promising environmental solution that can be utilized to address this issue, to convert antibiotic waste into non-toxic products by utilizing renewable and abundant solar energy. In the present study, a novel nanocomposite of zeolitic imidazolate frameworks (ZIF-8) and molybdenum diselenide (MoSe2) was efficiently synthesized by the solvothermal method for the complete degradation of the antibiotics and textile waste from water. The morphology, crystallinity and band gap of the samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and UV-visible spectroscopy. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) provide the binding information of the sample. The photocatalytic activity was tested for degradation of the antibiotics (tetracycline hydrochloride (TC) and metronidazole (MNZ)) used in COVID-19 treatment and textile dye (malachite green). Time-resolved photoluminescence spectroscopy confirmed the enhanced charge separation in the MoSe2@ZIF-8 nanocomposite with an average lifetime of 4.72 ns as compared to pristine samples. The nanocomposite showed ~ 100% removal efficiency with rate constants of 63 × 10-3, 49 × 10-3 and 42 × 10-3 min-1 for TC, MNZ and malachite green, respectively. The photocatalytic degradation of TC was carried out under different pH conditions (4, 7 and 9), and the degradation mechanism was explained on the basis of zeta potential measurements and active species trapping experiment. The by-products of the photocatalytic treatment of TC antibiotics were tested using liquid chromatography-mass spectroscopy (LC-MS), and they were found to be non-toxic for aquatic and human life. The regeneration property of the nanocomposite was confirmed by FESEM with regeneration efficiency of 88.7% in the 4th cycle. Thus, MoSe2@ZIF-8-based photocatalysts have potential application in water remediation, especially in making the antibiotic waste less toxic.
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Affiliation(s)
- Honey Mittal
- Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, 110025, India
| | - Aruna Ivaturi
- Smart Materials Research and Device Technology (SMaRDT) Group, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL, UK
| | - Manika Khanuja
- Centre for Nanoscience and Nanotechnology, Jamia Millia Islamia, New Delhi, 110025, India.
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Ahmaruzzaman M. MXenes and MXene-supported nanocomposites: a novel materials for aqueous environmental remediation. RSC Adv 2022; 12:34766-34789. [PMID: 36540274 PMCID: PMC9723541 DOI: 10.1039/d2ra05530a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 11/22/2022] [Indexed: 08/29/2023] Open
Abstract
Water contamination has become a significant issue on a global scale. Adsorption is a cost-effective way to treat water and wastewater compared to other techniques such as the Advanced Oxidation Processes (AOPs), photocatalytic degradation, membrane filtration etc. Numerous research experts are continuously developing inexpensive substances for the adsorptive removal of organic contaminants from wastewater. A fresh and intriguing area of inquiry has emerged as a result of the development of MXenes. This article aims to provide a preliminary understanding of MXenes from synthesis, structure, and characterization to the scope of further research. The applications of MXenes as a new generation adsorbent for remediation of various kinds of organic pollutants and heavy metals from wastewater are also summarized. MXenes with altered surfaces may make effective adsorbents for wastewater treatment. Lastly, the mechanism of adsorption of organic contaminants and heavy metals on MXenes is also discussed for a better understanding of the readers.
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Affiliation(s)
- Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology Silchar 788010 Assam India
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7
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Mengesha DN, Kim H. Electronic structure modulation of multi-walled carbon nanotubes using azo dye for inducing non-radical reaction: Effect of graphitic nitrogen and structural defect. CHEMOSPHERE 2022; 307:136023. [PMID: 35973492 DOI: 10.1016/j.chemosphere.2022.136023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/27/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
Multiwalled carbon nanotube (MWCNT) have a great potential for advanced oxidation process as a metal free catalyst. However, there catalytic activity is very low and needs to be appropriately tuned. Herein, we demonstrate a novel synthesis method for tuning the defect and surface functionality of MWCNT using azo dyes and the catalytic performance was tested for the degradation of different organic contaminates using PMS as an oxidant. The content, type of heteroatom functional groups, and the defect parameters were optimized by varying the pH and concentration of the organic dye. The quenching effect showed that singlet oxygen (1O2) is the primary reactive species generated by graphitic nitrogen, which can be boosted by the degree of graphitic structure disruption in MWCNT. The Linear sweep voltammetry (LSV) also confirmed that extrinsic doping enhanced the non-radical degradation by increasing the direct charge transfer rate from MB to PMS. Moreover, the designed catalyst showed a fast degradation performance with 35.1 kJ/mol activation energy and achieved the highest dye degradation rate and even surpassed some state-of-the-art metal-based and metal-free catalysts. The effect of inorganic anions study has also confirmed its industrial applicability.
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Affiliation(s)
- Daniel N Mengesha
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do 17058, Republic of Korea
| | - Hern Kim
- Department of Energy Science and Technology, Environmental Waste Recycle Institute, Myongji University, Yongin, Gyeonggi-do 17058, Republic of Korea.
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Naeimi A, Ghadi FE, Saadatkhah SM, Honarmand M. First and efficient bio-nano composite, SnO2/Calcite based on Cypress leaves and eggshell wastes, for cytotoxic effects on HepG2 liver cancer cell lines and its antioxidant and antimicrobial activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Mishra SR, Ahmaruzzaman M. Tin oxide based nanostructured materials: synthesis and potential applications. NANOSCALE 2022; 14:1566-1605. [PMID: 35072188 DOI: 10.1039/d1nr07040a] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In view of their inimitable characteristics and properties, SnO2 nanomaterials and nanocomposites have been used not only in the field of diverse advanced catalytic technologies and sensors but also in the field of energy storage such as lithium-ion batteries and supercapacitors, and in the field of energy production such as solar cells and water splitting. This review discusses the various synthesis techniques such as traditional methods, including processes like thermal decomposition, chemical vapor deposition, electrospinning, sol-gel, hydrothermal, solvothermal, and template-mediated methods and green methods, which include synthesis through plant-mediated, microbe-mediated, and biomolecule-mediated processes. Moreover, the advantages and limitations of these synthesis procedures and how to overcome them that would lead to future research are also discussed. This literature also focuses on various applications such as environmental remediation, energy production, energy storage, and removal of biological contaminants. Therefore, the rise and journey of SnO2-based nanocomposites will motivate the modern generation of chemists to modify and design robust nanoparticles and nanocomposites that can effectively tackle significant environmental challenges. This overview concludes by providing future perspectives on research into tin oxide in synthesis and its various applications.
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Affiliation(s)
- Soumya Ranjan Mishra
- Department of Chemistry, National Institute of Technology, Silchar - 788010, Assam, India.
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar - 788010, Assam, India.
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10
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Yuan N, Zhao A, Hu Z, Tan K, Zhang J. Preparation and application of porous materials from coal gasification slag for wastewater treatment: A review. CHEMOSPHERE 2022; 287:132227. [PMID: 34826920 DOI: 10.1016/j.chemosphere.2021.132227] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/24/2021] [Accepted: 09/08/2021] [Indexed: 06/13/2023]
Abstract
In recent years, coal gasification has been gradually promoted as clean technology, and coal gasification slag (CGS) emissions have increased accordingly. CGS, including coarse slag and fine slag, is rich in SiO2 and Al2O3 and has pozzolanic activity, and thus CGS can be regarded as a cheap source of aluminosilicate. Also, CGS, especially the fine slag, usually contains higher contents of residual carbon which has a large specific surface area and low volatility and hence can be considered as a favorable precursor of activated carbon. Benefiting from these characteristics, CGS can be used to prepare high value-added porous materials, such as zeolite, mesoporous silica, carbon-silicon composite, and porous ceramics, and the obtained structures accommodate both sufficient adsorption capacity and low cost. Here, we review the research advances in characteristics of CGS and preparation methods of CGS-based porous materials, as well as their adsorption performance of heavy metal ions, organic dyes, ammonia nitrogen, and other water pollutants. The current studies indicate that CGS-derived adsorbents are effective and economical alternatives for removing aqueous pollutants. In addition, further research prospects on CGS-based porous materials are proposed.
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Affiliation(s)
- Ning Yuan
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China.
| | - Aijing Zhao
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Zekai Hu
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Kaiqi Tan
- School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Jianbo Zhang
- CAS Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100090, China
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Mohanta D, Ahmaruzzaman M. Facile fabrication of novel Fe 3O 4-SnO 2-gC 3N 4 ternary nanocomposites and their photocatalytic properties towards the degradation of carbofuran. CHEMOSPHERE 2021; 285:131395. [PMID: 34252806 DOI: 10.1016/j.chemosphere.2021.131395] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/26/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Herein, Fe3O4-SnO2 nanoheterojunction has been synthesized and successfully encapsulated in gC3N4 matrix using a novel hydrothermal technique. The synthesized material was characterized using sophisticated analytical methods like XRD, TEM, BET, UV-Vis, VSM and XPS to evaluate structural, morphological, optical, magnetic and surface chemical properties. The hybrid nanostructure Fe3O4-SnO2-gC3N4 has been utilized for the LED light-induced photocatalytic degradation of carbofuran. The catalyst exhibited notable photocatalytic performance under visible light with an efficiency of ~89% and pseudo first order rate constant of 0.015 min-1. The result of change in variables like catalyst dose, pollutant concentration, pH and contact time on the photodegradation efficiency and degradation kinetics was studied. The incorporation of Fe3O4 improved the magnetic separation of the catalyst after several cycles of operation, thereby improving the practical utility of the catalyst system to tackle organic pollutants.
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Affiliation(s)
- Dipyaman Mohanta
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India.
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12
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Mohanta D, Ahmaruzzaman M. Au-SnO 2-CdS ternary nanoheterojunction composite for enhanced visible light-induced photodegradation of imidacloprid. ENVIRONMENTAL RESEARCH 2021; 201:111586. [PMID: 34175290 DOI: 10.1016/j.envres.2021.111586] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/15/2021] [Accepted: 06/20/2021] [Indexed: 06/13/2023]
Abstract
Herein, we have developed a novel synthetic strategy for the fabrication of Au-SnO2-CdS ternary nano-heterojunction catalyst and its utility towards LED light derived photocatalytic degradation of imidacloprid has been evaluated. The synthesized ternary nanocomposite was characterized using sophisticated analytical techniques to evaluate the catalyst's morphological, structural and surface chemical properties. The photocatalytic activity of the ternary catalyst towards the degradation of imidacloprid was evaluated under LED irradiation. Approximately 95% of the degradation efficiency was achieved with a pseudo-first-order reaction rate of 15.6 × 10-3 min-1. The degradation efficiency of Au-SnO2-CdS nano-catalyst was found to be ~1.2, 1.4 and 2.1 times to that of the pristine Au, CdS and SnO2 nanomaterials under similar experimental conditions. The effect of variation of parameters like contact time, initial pollutant concentration and pH on degradation efficiency has also been investigated. Moreover, the identification of various degradation products and reactive intermediates were made with high-performance liquid chromatography and electron spin resonance techniques.
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Affiliation(s)
- Dipyaman Mohanta
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India.
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13
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Yusuf A, Al Jitan S, Garlisi C, Palmisano G. A review of recent and emerging antimicrobial nanomaterials in wastewater treatment applications. CHEMOSPHERE 2021; 278:130440. [PMID: 33838416 DOI: 10.1016/j.chemosphere.2021.130440] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 03/23/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
In this paper, we present a critical review on antimicrobial nanomaterials with demonstrated potential for application as a disinfection technology in wastewater treatment. Studies involving fabrication and testing of antimicrobial nanomaterials for wastewater treatment were gathered, critically reviewed, and analyzed. Our review shows that there are only a few eligible candidate nanoparticles (NPs) (metal and metal oxide) that can adequately serve as an antimicrobial agent. Nanosilver (nAg) was the most studied and moderately understood metal NPs with proven antimicrobial activity followed by ZnO (among antimicrobial metal oxide NPs) which outperformed titania (in the absence of light) in efficacy due to its better solubility in aqueous condition. The direction of future work was found to be in the development of antimicrobial nanocomposites, since they provide more stability for antimicrobial metal and metal oxides NPs in water, thereby increasing their activity. This review will serve as an updated survey, yet touching also the fundamentals of the antimicrobial activity, with vital information for researchers planning to embark on the development of superior antimicrobial nanomaterials for wastewater treatment applications.
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Affiliation(s)
- Ahmed Yusuf
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Membrane and Advanced Water Technology, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Samar Al Jitan
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Corrado Garlisi
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Giovanni Palmisano
- Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Research and Innovation Center on CO(2) and H(2), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates; Center for Membrane and Advanced Water Technology, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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Green synthesis and characterization of Ud-SnO2-ZnO using Urtica dioica leaf extract: A nanocomposite photocatalyst for degradation of Rhodamine B dye. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04546-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Rani N, Khurana K, Jaggi N. Structural and electrical properties of MWCNTs/SnO2 nanocomposites via hydrothermal and co-precipitation route: A comparative study. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01968-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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16
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Gul A, Sun J, Ullah R, Munir T, Bai S. Incorporation of Anatase TiO
2
to Highly Porous Silica (BMMs) for Photo‐Degradation of Alizarin Red Dye in Aqueous Solution. ChemistrySelect 2021. [DOI: 10.1002/slct.202100813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anadil Gul
- Beijing Key Laboratory for Green Catalysis and Separation Department of Environmental and Chemical Engineering Beijing University of Technology Beijing 100124 China
| | - Jihong Sun
- Beijing Key Laboratory for Green Catalysis and Separation Department of Environmental and Chemical Engineering Beijing University of Technology Beijing 100124 China
| | - Raza Ullah
- Beijing Key Laboratory for Green Catalysis and Separation Department of Environmental and Chemical Engineering Beijing University of Technology Beijing 100124 China
| | - Tallat Munir
- Beijing Key Laboratory for Green Catalysis and Separation Department of Environmental and Chemical Engineering Beijing University of Technology Beijing 100124 China
| | - Shiyang Bai
- Beijing Key Laboratory for Green Catalysis and Separation Department of Environmental and Chemical Engineering Beijing University of Technology Beijing 100124 China
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Mohanta D, Mahanta A, Mishra SR, Jasimuddin S, Ahmaruzzaman M. Novel SnO 2@ZIF-8/gC 3N 4 nanohybrids for excellent electrochemical performance towards sensing of p-nitrophenol. ENVIRONMENTAL RESEARCH 2021; 197:111077. [PMID: 33794171 DOI: 10.1016/j.envres.2021.111077] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 06/12/2023]
Abstract
Herein, a novel synthetic strategy has been proposed to prepare engineered SnO2@ZIF-8/gC3N4 nanohybrids for electrochemical sensing of p-nitrophenol (p-NP). The electrochemical properties were investigated using cyclic voltammetry (CV), chronoamperometry (CA), and differential pulse voltammetry (DPV). The developed nanohybrid sensor displayed an excellent electrochemical performance towards sensing of p-NP with a detection limit of 0.565 μM. The sensitivity of the prepared nanohybrid was found to be 2.63 μAcm-2μM-1. Moreover, the newly fabricated sensor exhibited remarkable selectivity (over tenfold excess) in the presence of common interferents. The simultaneous detection of isomers of nitrophenol is difficult using the developed sensor. However, other common interferents, such as phenol and aminophenol have negligible effects on the sensitivity of SnO2@ZIF-8/gC3N4 towards the detection of p-nitrophenol. Further, the newly developed sensor showed consistency of sensing response up to 30 days. Thus, implementation of SnO2@ZIF-8/gC3N4 nanohybrids as a p-NP electrochemical sensor offers the advantages of simplicity, selectivity, and stability.
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Affiliation(s)
- Dipyaman Mohanta
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Abhinandan Mahanta
- Department of Chemistry, Assam University, Silchar, Assam, 788010, India
| | - Soumya Ranjan Mishra
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India
| | - Sk Jasimuddin
- Department of Chemistry, Assam University, Silchar, Assam, 788010, India
| | - Md Ahmaruzzaman
- Department of Chemistry, National Institute of Technology, Silchar, Assam, 788010, India.
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Didari J, Sadeghzadeh-Attar A. Ni-N codoped SnO2/Fe2O3 nanocomposite as advanced bifunctional photocatalyst for simultaneous photocatalytic redox conversion of Cr(VI) and As(III). J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Carbon nanotube membranes – Strategies and challenges towards scalable manufacturing and practical separation applications. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117929] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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