1
|
Somu SK, Swaminathan SV, Selvakumar P, Pal A, Kundu T. Threefold enhanced photodegradation of methylene blue using MgO composite with minimum Nd 2O 3: finding the sweet spot. Photochem Photobiol Sci 2024; 23:1533-1542. [PMID: 39030314 DOI: 10.1007/s43630-024-00614-6] [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: 02/26/2024] [Accepted: 07/11/2024] [Indexed: 07/21/2024]
Abstract
Removal of organic dyes like methylene blue (MB) from industrial effluents serves as potential source of potable water. Photocatalytic degradation using sustainable catalyst is deemed to be an affordable solution. In this work, Nd2O3/MgO nanocomposite with different compositions (1, 3, and 5wt% Nd2O3 with MgO) have been achieved using hydrothermal synthesis and characterized extensively. Interestingly, increasing Nd2O3 proportion (1-5%) enhances light absorption, and decreases band gap and electron-hole recombination. The efficacy of the photocatalysts is tested with the degradation of MB dye, through optimizing Nd2O3/MgO proportion, contact time, catalyst dose, and pH. Interestingly, control experiments reveal that 5wt% Nd2O3/MgO achieve 99.6% degradation of MB in 90 min at pH 7, compared to 88.8% with bare MgO under same condition. Kinetic data show that 5wt% Nd2O3/MgO exhibits ca. 3 times higher degradation rate compared to MgO. For the first time, our work enable MgO-based sustainable photocatalyst development with minimum (5 wt%) rare-earth combination to achieve excellent photocatalytic degradation performance.
Collapse
Affiliation(s)
- Sathish Kumar Somu
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Sri Vanaja Swaminathan
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Powrnika Selvakumar
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India
| | - Amrita Pal
- Department of Chemistry, Sathyabama Institute of Science and Technology, Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai, Tamil Nadu, 600119, India
| | - Tanay Kundu
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
| |
Collapse
|
2
|
Bilal M, Ikram M, Shujah T, Haider A, Naz S, Ul-Hamid A, Naz M, Haider J, Shahzadi I, Nabgan W. Chitosan-Grafted Polyacrylic Acid-Doped Copper Oxide Nanoflakes Used as a Potential Dye Degrader and Antibacterial Agent: In Silico Molecular Docking Analysis. ACS OMEGA 2022; 7:41614-41626. [PMID: 36406528 PMCID: PMC9670908 DOI: 10.1021/acsomega.2c05625] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
This study examined the catalytic and bactericidal properties of polymer-doped copper oxide (CuO). For this purpose, a facile co-precipitation method was used to synthesize CuO nanostructures doped with CS-g-PAA. Various concentrations (2, 4, and 6%) of dopants were systematically incorporated into a fixed amount of CuO. The prepared samples were analyzed by different optical, structural, and morphological characterizations. Field emission scanning electron microscopy and transmission electron microscopy micrographs indicated that doping transformed CuO's agglomerated rod-like surface morphology to form nanoflakes. UV-vis spectroscopy revealed that the optical spectra of the samples exhibit a redshift after doping, leading to a decrease in band gap energy from 3.3 to 2.5 eV. The purpose of the study was to test the catalytic activity of pristine and CS-g-PAA doped CuO for the degradation of methylene blue in acidic, basic, and neutral conditions using NaBH4 as a reducing agent in an aqueous medium. Furthermore, antibacterial activity was evaluated against Gram-positive and Gram-negative bacteria, namely, Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Overall, enhanced bactericidal performance was observed upon doping CS-g-PAA into CuO, i.e., 4.25-6.15 and 4.40-8.15 mm against S. aureus and 1.35-4.20 and 2.25-5.25 mm against E. coli at the lowest and highest doses, respectively. The relevant catalytic and bactericidal action mechanisms of samples are also proposed in the study. Moreover, in silico molecular docking studies illustrated the role of these prepared nanomaterials as possible inhibitors of FabH and FabI enzymes of the fatty acid biosynthetic pathway.
Collapse
Affiliation(s)
- Muhammad Bilal
- Solar
Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore54000, Punjab, Pakistan
| | - Muhammad Ikram
- Solar
Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore54000, Punjab, Pakistan
| | - Tahira Shujah
- Department
of Physics, University of Central Punjab, Lahore54000, Punjab, Pakistan
| | - Ali Haider
- Department
of Clinical Medicine, Faculty of Veterinary and Animal Sciences, Muhammad
Nawaz Shareef, University of Agriculture, 66000Multan, Punjab, Pakistan
| | - Sadia Naz
- Tianjin
Institute of Industrial Biotechnology, Chinese
Academy of Sciences, Tianjin300308, China
| | - Anwar Ul-Hamid
- Core
Research Facilities, King Fahd University
of Petroleum & Minerals, Dhahran31261, Saudi Arabia
| | - Misbah Naz
- Department
of Chemistry, University of the Education, 54000Lahore, Pakistan
| | - Junaid Haider
- Tianjin
Institute of Industrial Biotechnology, Chinese
Academy of Sciences, Tianjin300308, China
| | - Iram Shahzadi
- Punjab
University College of Pharmacy, Allama Iqbal Campus, University of the Punjab, Lahore54000, Pakistan
| | - Walid Nabgan
- Departament
d’Enginyeria Química, Universitat
Rovira i Virgili, 43007Tarragona, Spain
| |
Collapse
|
3
|
Chang Song W, Kim B, Young Park S, Park G, Oh JW. Biosynthesis of silver and gold nanoparticles using Sargassum horneri extract as catalyst for industrial dye degradation. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
4
|
Ligustrum lucidum Leaf Extract-Assisted Green Synthesis of Silver Nanoparticles and Nano-Adsorbents Having Potential in Ultrasound-Assisted Adsorptive Removal of Methylene Blue Dye from Wastewater and Antimicrobial Activity. MATERIALS 2022; 15:ma15051637. [PMID: 35268867 PMCID: PMC8911476 DOI: 10.3390/ma15051637] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 02/15/2022] [Accepted: 02/19/2022] [Indexed: 01/02/2023]
Abstract
Present study was conducted to investigate the adsorption and ultrasound-assisted adsorption potential of silver nanoparticles (AgNPs) and silver nanoparticles loaded on chitosan (AgCS composite) as nano-adsorbents for methylene blue (MB) removal. AgNPs were synthesized using leaf extract of Ligustrum lucidum, which were incorporated on the chitosan’s surface for modification. UV−Vis Spectroscopy, FTIR, XRD, SEM, and EDX techniques were used to confirm the synthesis and characterization of nanomaterials. Batch adsorption and sono-adsorption experiments for the removal of MB were executed under optimal conditions; for fitting the experimental equilibrium data, Langmuir and Freundlich’s isotherm models were adopted. In addition, the antimicrobial potential of the AgNPs and AgCS were examined against selected bacterial and fungal strains. UV−Vis spectroscopy confirmed AgNPs synthesis from the leaf extract of L. lucidum used as a reducer, which was spherical as exposed in the SEM analysis. The FTIR spectrum illustrated phytochemicals in the leaf extract of L. lucidum functioning as stabilizing agents around AgNPs and AgCS. Whereas, corresponding crystalline peaks of nanomaterial, including a signal peak at 3 keV indicating the presence of silver, were confirmed by XRD and EDX. The Langmuir model was chosen as an efficient model for adsorption and sono-adsorption, which exposed that under optimum conditions (pH = 6, dye initial concentration = 5 mg L−1, adsorbents dosage = 0.005 g, time = 120 min, US power 80 W), MB removal efficiency of AgNPs was >70%, using ultrasound-assisted adsorption compared to the non-sonicated adsorption. Furthermore, AgNPs exhibited promising antibacterial potential against Staphylococcus aureus with the maximum zone of inhibition (14.67 ± 0.47 mm). It was concluded that the green synthesis approach for the large-scale production of metallic nanoparticles is quite effective and can be recommended for efficient and cost-effective way to eradicate dyes, particularly from textile wastewater.
Collapse
|
5
|
Green synthesis of biodegradable polyurethane and castor oil-based composite for benign transformation of methylene blue. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
|
6
|
Selvasembian R, Gwenzi W, Chaukura N, Mthembu S. Recent advances in the polyurethane-based adsorbents for the decontamination of hazardous wastewater pollutants. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:125960. [PMID: 34229405 DOI: 10.1016/j.jhazmat.2021.125960] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/18/2021] [Accepted: 04/21/2021] [Indexed: 06/13/2023]
Abstract
The pollution of aquatic systems with noxious organic and inorganic contaminants is a challenging problem faced by most countries. Water bodies are contaminated with diverse inorganic and organic pollutants originating from various diffuse and point sources, including industrial sectors, agricultural practices, and domestic wastes. Such hazardous water pollutants tend to accumulate in the environmental media including living organisms, thereby posing significant environmental health risks. Therefore, the remediation of wastewater pollutants is a priority. Adsorption is considered as the most efficient technique for the removal of pollutants in aqueous systems, and the deployment of suitable adsorbents plays a vital role for the sustainable application of the technique. The present review gives an overview of polyurethane foam (PUF) as an adsorbent, the synthesis approaches of polyurethane, and characterization aspects. Further emphasis is on the preparation of the various forms of polyurethane adsorbents, and their potential application in the removal of various challenging water pollutants. The removal mechanisms, including adsorption kinetics, isotherms, thermodynamics, and electrostatic and hydrophobic interactions between polyurethane adsorbents and pollutants are discussed. In addition, regeneration, recycling and disposal of spent polyurethane adsorbents are reported. Finally, key knowledge gaps on synthesis, characterization, industrial applications, life cycle analysis, and potential health risks of polyurethane adsorbents are discussed.
Collapse
Affiliation(s)
- Rangabhashiyam Selvasembian
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamilnadu, India.
| | - Willis Gwenzi
- Biosystems and Environmental Engineering Research Group, Department of Soil Science and Agricultural Engineering, Faculty of Agriculture, University of Zimbabwe, P.O. Box MP 167, Mount Pleasant, Harare, Zimbabwe.
| | - Nhamo Chaukura
- Department of Physical and Earth Sciences, Sol Plaatje University, Kimberley, South Africa.
| | - Siyanda Mthembu
- Department of Physical and Earth Sciences, Sol Plaatje University, Kimberley, South Africa.
| |
Collapse
|
7
|
Synthesis and characterization of biodegradable and cytocompatible polyurethane-bovine-derived hydroxyapatite biomaterials. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03622-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
8
|
Rambabu K, Bharath G, Banat F, Show PL. Green synthesis of zinc oxide nanoparticles using Phoenix dactylifera waste as bioreductant for effective dye degradation and antibacterial performance in wastewater treatment. JOURNAL OF HAZARDOUS MATERIALS 2021; 402:123560. [PMID: 32759001 DOI: 10.1016/j.jhazmat.2020.123560] [Citation(s) in RCA: 133] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/17/2020] [Accepted: 07/21/2020] [Indexed: 05/02/2023]
Abstract
Production of multi-functional zinc oxide nanoparticles (ZnO-NPs) for wastewater treatment through green-approaches is a desirable alternative for conventional synthesis routes. Biomass waste valorization for nanoparticles synthesis has received increased research attention. The present study reports date pulp waste (DPW) utilization as an effective bio-reductant for green-synthesis of ZnO-NPs. A simple and eco-friendly process with low reaction time and calcination temperature was adopted for DPW mediated ZnO-NPs (DP-ZnO-NPs) synthesis. Microscopic investigations of DP-ZnO-NPs confirmed the non-agglomeration and spherical nature of particles with mean diameter of 30 nm. EDX and XPS analysis defined the chemical composition and product purity of DP-ZnO-NPs. UV and photoluminescence studies exhibited surface plasmonic resonance at 381 nm and fluorescent nature of DP-ZnO-NPs. FTIR studies established a formation mechanism outline for DP-ZnO-NPs. XRD and Raman investigations confirmed the crystalline and hexagonal wurtzite phase of DP-ZnO-NPs. DSC/TG analysis displayed the thermal stability of DP-ZnO-NPs with <10 wt% loss upto 700 °C. Photocatalytic degradation of hazardous methylene blue and eosin yellow dyes using DP-ZnO-NPs, showed rapid decomposition rate with 90 % degradation efficiency. Additionally, DP-ZnO-NPs demonstrated significant antibacterial effects on various pathogenic bacteria in terms of zone-of-inhibition measured by disc-diffusion method. Thus, the as-prepared DP-ZnO-NPs is suitable for industrial wastewater treatment.
Collapse
Affiliation(s)
- K Rambabu
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - G Bharath
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Pau Loke Show
- Department of Chemical Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, 43500 Selangor Darul Ehsan, Malaysia.
| |
Collapse
|
9
|
Murtaza A, Uroos M, Sultan M, Muazzam R, Naz S. Enhancing catalytic potential of gold nanoparticles by linear and cross-linked polyurethane blending. RSC Adv 2021; 11:26635-26643. [PMID: 35480030 PMCID: PMC9037337 DOI: 10.1039/d1ra04662d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 07/23/2021] [Indexed: 11/21/2022] Open
Abstract
This work describes the synthesis of gold nanoparticles (AuNPs) and their subsequent stabilization using a water-borne polyurethane matrix of micro-particles (Au/PU) by a heating method. Composites were prepared both from linear and cross-linked polyurethane (LPU and CPU). Catalytic activities of synthesized composites exhibiting 226.4 nm size were evaluated for reduction of Congo red dye. More than 90% Congo red degradation was achieved in just 6 minutes with Au/LPU. Under similar conditions, 30% of dye was degraded with Au/CPU composite in 5 minutes. The effects of different variables such as concentration of dye, catalyst dose and concentration of reagents have been optimized. The degradation process followed first order kinetics. The most efficient composite (Au/LPU) was characterized using UV/Vis, FTIR, SEM, XRD and DLS techniques. The excellent catalytic activity can be attributed to the polyurethane matrix making the dye available to catalytic sites (AuNPs). This work describes the synthesis of gold nanoparticles (AuNPs) and their subsequent stabilization using a water-borne polyurethane matrix of micro-particles (Au/PU).![]()
Collapse
Affiliation(s)
- Amna Murtaza
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, 54590, Lahore, Pakistan
| | - Maliha Uroos
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, 54590, Lahore, Pakistan
| | - Misbah Sultan
- Centre for Applied Chemistry, School of Chemistry, University of the Punjab, 54590, Lahore, Pakistan
| | - Rabia Muazzam
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, 54590, Lahore, Pakistan
| | - Sadia Naz
- Centre for Research in Ionic Liquids, School of Chemistry, University of the Punjab, 54590, Lahore, Pakistan
| |
Collapse
|
10
|
DOĞAN ÇALHAN S, GÜNDOĞAN M. Copper Oxide Nanoparticles: Synthesis, Characterization, Antimicrobial Activities and Catalytic Reduction of Methylene Blue. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.650993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
11
|
Yang X, Jiang X, Bashir MS, Kong XZ. Preparation of Highly Uniform Polyurethane Microspheres by Precipitation Polymerization and Pd Immobilization on Their Surface and Their Catalytic Activity in 4-Nitrophenol Reduction and Dye Degradation. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06367] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xingjie Yang
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | - Xubao Jiang
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| | | | - Xiang Zheng Kong
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
| |
Collapse
|
12
|
Tercan M, Demirci S, Dayan O, Sahiner N. Simultaneous degradation and reduction of multiple organic compounds by poly(vinyl imidazole) cryogel-templated Co, Ni, and Cu metal nanoparticles. NEW J CHEM 2020. [DOI: 10.1039/d0nj00148a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Simultaneous degradation of methylene blue, eosin Y and 4-nitrophenol reduction by p(vinyl imidazole)–Co cryogel composite catalyst in aqueous environments.
Collapse
Affiliation(s)
- Melek Tercan
- Department of Chemistry
- Faculty of Arts and Science
- Canakkale Onsekiz Mart University
- Canakkale
- Turkey
| | - Sahin Demirci
- Department of Chemistry
- Faculty of Arts and Science
- Canakkale Onsekiz Mart University
- Canakkale
- Turkey
| | - Osman Dayan
- Department of Chemistry
- Faculty of Arts and Science
- Canakkale Onsekiz Mart University
- Canakkale
- Turkey
| | - Nurettin Sahiner
- Department of Chemistry
- Faculty of Arts and Science
- Canakkale Onsekiz Mart University
- Canakkale
- Turkey
| |
Collapse
|
13
|
Parcheta P, Głowińska E, Datta J. Effect of bio-based components on the chemical structure, thermal stability and mechanical properties of green thermoplastic polyurethane elastomers. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109422] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
14
|
Zhang Q, Xie X, Liu Y, Zheng X, Wang Y, Cong J, Yu C, Liu N, He Z, Liu J, Sand W. Sugar sources as Co-substrates promoting the degradation of refractory dye: A comparative study. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109613. [PMID: 31491606 DOI: 10.1016/j.ecoenv.2019.109613] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/23/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
Four sugar sources were used as co-substrates to promote the degradation of a selected refractory dye reactive black 5 (RB5) by the natural bacterial flora DDMZ1. The boosting performance of the four sugar sources on RB5 decolorization ranked as: fructose > sucrose > glucose > glucose + fructose. Kinetic results of these four co-metabolism systems agreed well with a first-order kinetic model. Four sugar sources stimulated the extracellular azoreductase secretion causing enhanced enzyme activity. An increased formation of low molecular weight intermediates was caused by the addition of sugar sources. The toxicity of RB5 degradation products was significantly reduced in the presence of sugar sources. The bacterial community structure differed remarkably as a result of sugar sources addition. For a fructose addition, a considerably enriched population of the functional species Burkholderia-Paraburkholderia and Klebsiella was noted. The results enlarge our knowledge of the microkinetic and microbiological mechanisms of co-metabolic degradation of refractory pollutants.
Collapse
Affiliation(s)
- Qingyun Zhang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Xuehui Xie
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China.
| | - Yanbiao Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Xiulin Zheng
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Yiqin Wang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Junhao Cong
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Chengzhi Yu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University, Suzhou, Anhui, 234000, China
| | - Zhenjiang He
- School of Metallurgy and Environment, Central South University, Changsha, 410083, PR China
| | - Jianshe Liu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China
| | - Wolfgang Sand
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, PR China; Institute of Biosciences, Freiberg University of Mining and Technology, Freiberg, 09599, Germany
| |
Collapse
|
15
|
Fu Q, Wen L, Zhang L, Chen X, Zhang H. Porous Carbon and Carbon/Metal Oxide Composites by Ice Templating and Subsequent Pyrolysis. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Qingshan Fu
- College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| | - Lang Wen
- College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Lei Zhang
- College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Xuedan Chen
- College of Material Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
| | - Haifei Zhang
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
| |
Collapse
|
16
|
Bashir MS, Jiang X, Li S, Kong XZ. Highly Uniform and Porous Polyurea Microspheres: Clean and Easy Preparation by Interface Polymerization, Palladium Incorporation, and High Catalytic Performance for Dye Degradation. Front Chem 2019; 7:314. [PMID: 31139616 PMCID: PMC6518977 DOI: 10.3389/fchem.2019.00314] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 04/23/2019] [Indexed: 11/24/2022] Open
Abstract
Owing to their high specific surface area and low density, porous polymer materials are of great importance in a vast variety of applications, particularly as supports for enzymes and transition metals. Herein, highly uniform and porous polyurea microspheres (PPM), with size between 200 and 500 μm, are prepared by interfacial polymerization of toluene diisocyanate (TDI) in water through a simple microfluidic device composed of two tube lines, in one of which TDI is flowing and merged to the other with flowing aqueous phase, generating therefore TDI droplets at merging. The polymerization starts in the tube while flowing to the reactor and completed therein. This is a simple, easy and effective process for preparation of uniform PPM. Results demonstrate that the presence of polyvinyl alcohol in the aqueous flow is necessary to obtain uniform PPM. The size of PPM is readily adjustable by changing the polymerization conditions. In addition, palladium is incorporated in PPM to get the composite microspheres Pd@PPM, which are used as catalyst in degradation of methylene blue and rhodamine B. High performance and good reusability are demonstrated. Monodispersity, efficient dye degradation, easy recovery, and remarkable reusability make Pd@PPM a promising catalyst for dye degradation.
Collapse
Affiliation(s)
| | - Xubao Jiang
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, China
| | - Shusheng Li
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, China
| | - Xiang Zheng Kong
- College of Chemistry and Chemical Engineering, University of Jinan, Jinan, China
| |
Collapse
|
17
|
Abstract
A number of physical, chemical, and biological technologies have been developed to address the issue of synthetic dyes in wastewater. One of the important chemical methods involves reduction of these stringent pollutants into less hazardous products. In this study, a cross-linked polyurethane foam (CPUF) was prepared from toluene diisocyanate (TDI), tetraethylenepentamine (TEPA), and polycaprolactone diol (PCL; Mw: 1000 g/mole). To avoid harmful reducing agents, ecofriendly reduction of methylene blue (MB) was executed with CPUF as catalyst where ascorbic acid and fresh juice extracts were applied as reducing agents. The FTIR and SEM analysis confirmed the chemical composition and porous morphology of CPUF, respectively. The 100% reduction of MB was recorded in just 15 minutes with ascorbic acid and CPUF, while similar result was obtained in 37 minutes in blank experiment composed of only MB and ascorbic acid. Thus, catalytic role of CPUF in reduction process was proved. Fresh fruit extracts also participated in the reduction process, but rate of reaction was accelerated in the presence of CPUF. The reusability study of the catalyst supported its stability and efficiency. All the successful reduction processes followed 1st-order kinetics with highest apparent rate constant for ascorbic acid. Furthermore, phytotoxicity evaluation proved safe reduction of MB with 60% germination index. Hence, it can be concluded that catalytic role of CPUF has been established with safe and biodegradable reducing agents which can be extended to other redox processes.
Collapse
|
18
|
Begum R, Najeeb J, Sattar A, Naseem K, Irfan A, Al-Sehemi AG, Farooqi ZH. Chemical reduction of methylene blue in the presence of nanocatalysts: a critical review. REV CHEM ENG 2019. [DOI: 10.1515/revce-2018-0047] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Methylene blue (MB) (3,7-bis (dimethylamino)-phenothiazin-5-ium chloride) is a harmful pollutant and has been long been known for its detrimental effects on human health. Over the recent years, many strategies including reduction, oxidation, biological and photochemical degradation have been reported for converting this harmful dye into commercially useful products. Among the aforementioned strategies, the nanocatalytic reduction of MB into its reduced counterpart, i.e. leucomethylene blue, is considered more preferable because it has been reported to have numerous applications in various industrial fields in the academic literature. The reduction of MB is the kinetically unfavorable reaction. Henceforth, various nanocatalytic systems utilizing different kinds of stabilization mediums have reportedly been used for speeding up this particular reaction. This article attempts to not only describe the fundamental properties of the reduction reaction of MB but also present the classification of the recently reported nanocatalytic assemblies on the basis of the utilized supporting medium. Various techniques used for the characterization of nanocatalytic systems reported for the reduction of MB have been summarized in this review. The thermodynamics, kinetics and mechanistic studies of this nanocatalytic reaction have also been narrated here. This critical review has been written comprehensively to abridge the recent research progress in the assemblage of nanocatalytic systems used for the reduction of MB and to propose some new ideas for further development in this area.
Collapse
Affiliation(s)
- Robina Begum
- Institute of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan
- Centre for Undergraduate Studies, University of the Punjab , New Campus , Lahore 54590 , Pakistan
| | - Jawayria Najeeb
- Institute of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan
| | - Ayesha Sattar
- Institute of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan
| | - Khalida Naseem
- Institute of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan
| | - Ahmad Irfan
- Research Center for Advanced Materials Science (RCAMS), King Khalid University , Abha 61413 , Saudi Arabia
- Department of Chemistry, Faculty of Science , King Khalid University , Abha 61413 , Saudi Arabia
| | - Abdullah G. Al-Sehemi
- Research Center for Advanced Materials Science (RCAMS), King Khalid University , Abha 61413 , Saudi Arabia
- Department of Chemistry, Faculty of Science , King Khalid University , Abha 61413 , Saudi Arabia
| | - Zahoor H. Farooqi
- Institute of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan , E-mail:
| |
Collapse
|