1
|
Warshagha MZA, Muneer M, Althagafi II, Ahmed SA. Highly efficient and stable AgI-CdO nanocomposites for photocatalytic and antibacterial activity. RSC Adv 2023; 13:5013-5026. [PMID: 36777948 PMCID: PMC9909248 DOI: 10.1039/d2ra07626h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
For the last several decades, semiconducting materials and nanocomposites have received a lot of interest in generating highly efficient photocatalysts to destroy organic pollutants and eradicate bacteria. This study uses a simple deposition and precipitation approach at ambient temperature to create a unique and efficient AgI-CdO heterojunction. DRS, IR, SEM, EDS, XRD, EIS, and TEM were utilized to identify the material. SEM and TEM investigation depict the completely spherical, hexagonal forms and zigzag cubes for synthesized AgI-CdO. The EDX spectra reveal the presence of Ag, I, Cd, and O elements without impurity peaks showing that the prepared samples are highly pure. The activity of the synthesized materials was tested by degrading two different chromophoric dyes and a drug derivative (paracetamol) in an aqueous suspension under visible light. In addition, the activity of the most active catalyst was compared with Degussa P25, Fenton's reagent, and under sunlight for degradation of MB and RhB under similar conditions. Photolysis of paracetamol was also looked at using HPLC to identify intermediates formed in the photo-oxidation process. In addition, antibacterial activity was also investigated with the synthesized CdO-AgI nanocomposite in vitro against human pathogenic bacterial strains and compared with that of pure materials like AgI and standard ampicillin. The results showed excellent activity with the composite material, which could be due to the higher surface areas and the interactions between AgI and CdO nanoparticles. Quenching investigations revealed O2˙- and holes are principal reactive species. A viable photocatalytic degradation mechanism for organic pollutant elimination over the AgI-CdO nanocomposite has been sketched out based on the obtained results.
Collapse
Affiliation(s)
| | - M. Muneer
- Department of Chemistry, Aligarh Muslim UniversityAligarh-202002India
| | - Ismail I. Althagafi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura UniversityMakkah 21955Saudi Arabia
| | - Saleh A. Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura UniversityMakkah 21955Saudi Arabia
| |
Collapse
|
2
|
Jamal MA, Shahazidy U, Al-Saeed FA, Al Syaad KM, Muneer M, Ahmed I, Ahmed AE. Investigations to Explore Molecular Interactions and Sweetness Response of Polyhydroxy Compounds with Amino Acids in Aqueous Systems. ACS Omega 2022; 7:40950-40962. [PMID: 36406515 PMCID: PMC9670697 DOI: 10.1021/acsomega.2c04102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
In conjunction with the development of people's living standards, the modern world demands good-quality food such as sweets, candies, chocolates, diet drinks, beverages, and so on, but because of obesity and other health issues people concentrate more on sugar-free or low-calorie products. Polyols are such a kind of food with desirable qualities, and they play a role in controlling the blood glucose level in diabetic patients. The density (ρ) and sound speed (u) of sugar alcohol in water and in (0.02, 0.04, and 0.06) mol kg-1l-arginine solutions at different temperatures (293.15-318.15 K) and atmospheric pressure were measured by using Anton Paar DSA5000M. Experimental density and sound velocity data were further used to compute volumetric and acoustic parameters such as apparent molar volume (ØV), partial molar volume (Ø V 0), compressibility (Ø k 0), expansibility (Ø E 0), and so on. The positive trends of apparent molar volume (Ø V ), and partial molar volume Ø V 0), values indicate strong hydrophilic interactions in ternary solutions. These interactions give a complete picture about solvation behavior, the effect of temperature, and hydrogen bonding present among (galactitol + l-arginine) mixtures. The apparent specific volume values were calculated, and it was found that these values of the investigated mixtures lie on the borderline with the reported values of sweeteners. This study may offer a new vision in elucidation of mechanistic modifications between sugar alcohol, amino acid, and their mode of interactions.
Collapse
Affiliation(s)
- Muhammad Asghar Jamal
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad38000, Pakistan
| | - Uzma Shahazidy
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad38000, Pakistan
| | - Fatimah A. Al-Saeed
- Department
of Biology, College of Science, King Khalid
University, Abha61413, Saudi Arabia
- Research
Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha61413, Saudi Arabia
| | - Khalid M. Al Syaad
- Department
of Biology, Faculty of Science, King Khalid
University, P.O. Box 9004, Abha61413, Saudi Arabia
| | - Majid Muneer
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad38000, Pakistan
| | - Ikram Ahmed
- Department
of Chemistry, University of Sahiwal, Sahiwal54000, Pakistan
| | - Ahmed Ezzat Ahmed
- Department
of Biology, Faculty of Science, King Khalid
University, P.O. Box 9004, Abha61413, Saudi Arabia
- Department
of Theriogenology, Faculty of Veterinary Medicine, South Valley University, 83523Qena, Egypt
| |
Collapse
|
3
|
Jamal MA, Ahmad Sajid T, Saeed M, Naseem B, Muneer M. Explication of molecular interactions between leucine and pharmaceutical active ionic liquid in an aqueous system: Volumetric and acoustic studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
4
|
Haq AU, Saeed M, Muneer M, Jamal MA, Maqbool T, Tahir T. Biosorption of metribuzin pesticide by Cucumber (Cucumis sativus) peels-zinc oxide nanoparticles composite. Sci Rep 2022; 12:5840. [PMID: 35393506 PMCID: PMC8990079 DOI: 10.1038/s41598-022-09860-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/25/2022] [Indexed: 11/13/2022] Open
Abstract
Herein, a biosorbent was prepared from cucumber peels modified with ZnO nanoparticles (CPZiONp-composite) for the biosorption of metribuzin. Characterization of the composite was accomplished using FTIR, SEM, EDX, surface area pore size analyzer and pH of point of zero charge (pHpzc). Biosorption study was executed in batch concerning the impact of pH, composite dose, contact time, initial metribuzin concentration and temperature. The biosorption depends on pH and maximum biosorption was acquired at pH 3.0. Surface chemistry of the composite was studied by determining the pHpzc and was found to be 6.1. The biosorption nature was investigated using isotherms and was assessed that Freundlich isotherm is well suited for the fitting of the biosorption data owing to the highest R2. The maximum biosorption capacity of CPZiONp-composite was found to be 200 mg g-1. The biosorption data were fitted in to different kinetic models and the outcomes suggesting that pseudo second order is a satisfactory model to interpret the biosorption data owing to the highest R2. Thermodynamic parameters for instance entropy, enthalpy and Gibbs free energy were computed and revealed that biosorption of metribuzin onto CPZiONp-composite is spontaneous and exothermic process.
Collapse
Affiliation(s)
- Atta Ul Haq
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan.
| | - Muhammad Saeed
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Majid Muneer
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | | | - Tahir Maqbool
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Tayyab Tahir
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| |
Collapse
|
5
|
Saeed M, Khan I, Adeel M, Akram N, Muneer M. Synthesis of a CoO–ZnO photocatalyst for enhanced visible-light assisted photodegradation of methylene blue. NEW J CHEM 2022. [DOI: 10.1039/d1nj05633f] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Mechanism of photodegradation of methylene blue over CoO–ZnO photocatalyst.
Collapse
Affiliation(s)
- Muhammad Saeed
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Iltaf Khan
- College of Chemical and Materials Engineering, Beijing Institute of Petrochemical Technology, Beijing, P. R. China
- School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
| | - Muhammad Adeel
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Nadia Akram
- Department of Chemistry, Government College University Faisalabad, Pakistan
| | - Majid Muneer
- Department of Chemistry, Government College University Faisalabad, Pakistan
| |
Collapse
|
6
|
Nisar A, Saeed M, Muneer M, Usman M, Khan I. Synthesis and characterization of ZnO decorated reduced graphene oxide (ZnO-rGO) and evaluation of its photocatalytic activity toward photodegradation of methylene blue. Environ Sci Pollut Res Int 2022; 29:418-430. [PMID: 33745046 DOI: 10.1007/s11356-021-13520-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Photocatalytic treatment is one of the techniques used for the treatment of dyes-contaminated wastewater. It is important to develop an effective visible-light-driven catalyst for the treatment of dyes-contaminated wastewater. This study reports the synthesis of ZnO-reduced graphene oxide catalyst for the degradation of methylene blue. Graphene oxide was prepared by Hammer and Offeman process, while ZnO-rGO (1:1) was prepared by the chemical reduction method. The prepared ZnO-rGO composite was characterized by XRD, TEM, SEM, UV-Vis, DRS, N2 adsorption-desorption, FTIR, and XPS analyses. The photocatalytic activity was evaluated by photodegradation of methylene blue solution under irradiation. It was found that ZnO-rGO is capable of removing the dye from water and achieved the highest dye degradation efficiency of ~99% within 60 min. Furthermore, the ZnO-rGO was recycled in degradation experiments without any loss in its catalytic performance. The reaction kinetics was described in terms of the Langmuir-Hinshelwood mechanism, one of the kinetics mechanisms of surface catalyzed reaction. 36.2 and 13.1 kJ/mol were calculated as the apparent and true activation energy for photodegradation of methylene blue respectively.
Collapse
Affiliation(s)
- Asif Nisar
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Saeed
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan.
| | - Majid Muneer
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Usman
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Iltaf Khan
- College of Chemical and Materials Engineering, Beijing Institute of Petrochemical Technology, Beijing, China
| |
Collapse
|
7
|
Hussain M, Muneer M, Raza R, Jamal MA, Khosa MK. Evaluation of La xSr 1−xZn yFe 1−yO 3−δ ( x = 0.54, 0.8, y = 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs. NEW J CHEM 2022. [DOI: 10.1039/d2nj04295a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cobalt free composite cathode materials with excellent fuel cell performance and thermal stability are reported as promising candidates for intermediate temperature solid oxide fuel cells (IT-SOFCs).
Collapse
Affiliation(s)
- Mazhar Hussain
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Majid Muneer
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Rizwan Raza
- Clean Energy Research Lab (CERL), Department of Physics, COMSATS University Islamabad, Lahore Campus, Lahore 54000, Pakistan
| | - Muhammad Asghar Jamal
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Kaleem Khosa
- Department of Chemistry, Government College University Faisalabad, Faisalabad 38000, Pakistan
| |
Collapse
|
8
|
Saeed M, Muneer M, Haq AU, Akram N. Photocatalysis: an effective tool for photodegradation of dyes-a review. Environ Sci Pollut Res Int 2022; 29:293-311. [PMID: 34523090 DOI: 10.1007/s11356-021-16389-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 09/03/2021] [Indexed: 06/13/2023]
Abstract
The disposal of dye-contaminated wastewater is a major concern around the world for which a variety of techniques are used for its treatment. The photocatalytic treatment of dye-contaminated wastewater is one of the treatment methods. Semiconductor-assisted photocatalytic treatment of dye-contaminated wastewater has gained pronounced attention recently. This review outlines the recent advancements in the photocatalytic treatment of dye-contaminated wastewater. The photocatalytic degradation of dyes follows three types of mechanisms: (1) dye sensitization through charge injection, (2) indirect dye degradation through oxidation/reduction, and (3) direct photolysis of dye. Several experimental parameters like initial concentration of dyes, pH, and catalyst dosage significantly affect the photocatalytic degradation of dyes. The photocatalytic materials can be categorized into three generations. The single-component (e.g., ZnO, TiO2) and multiple component semiconductor metal oxides (e.g., ZnO-TiO2, Bi2O3-ZnO) are categorized as first-generation and second-generation photocatalysts, respectively. The photocatalysts dispersed on an inert solid substrate (e.g., Ag-Al2O3, ZnO-C) are classified as third-generation photocatalysts. Finally, we reviewed the challenges that affect the photocatalytic degradation of dyes.
Collapse
Affiliation(s)
- Muhammad Saeed
- Department of Chemistry, Government College University, Faisalabad, Pakistan.
| | - Majid Muneer
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Atta Ul Haq
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Nadia Akram
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| |
Collapse
|
9
|
Zia MA, Khosa MK, Muneer M, Zia KM, Jawwad Saif M. Antimicrobial, selective antibiofilm, and antioxidant properties of plasticized PMMA/PVC and zinc oxide nano filler for biomedical applications. Pak J Pharm Sci 2022; 35:233-238. [PMID: 35228182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The PMMA/PVC/ZnO-nanocomposites with zinc oxide nanoparticle (particle size < 50nm) was synthesized by solution casting technique. Morphology of the synthesized nano composites have been investigated by FT-IR and XRD techniques. After characterization, synthesized composites were applied for antibacterial, selective antibiofilm and free radical scavenging screening. Antibacterial studies were measured against different bacterial strains. Antibiofilms activities were studied against those bacterial model pathogenic strains which showed highest and minimum sensitivity as a (~94 and ~88 at 160 μg/ml). Antioxidant activity of synthesized nanocomposites were measured by DPPH and showed scavenging capacity with IC50, 110 to > 200 μg/mL. Thus PMMA/PVC/ZnO nanocomposite showed promising antimicrobial activity and antioxidant activity that can be used for biomedical applications.
Collapse
Affiliation(s)
- Muhammad Abid Zia
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | | | - Majid Muneer
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Khalid Mahmood Zia
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Jawwad Saif
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| |
Collapse
|
10
|
Ahmad Sajid T, Jamal MA, Saeed M, Atta-ul-Haq, Muneer M. Elucidation of molecular interactions between amino acid and imidazolium based ionic liquid in an aqueous system: Volumetric and acoustic studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
11
|
Muneer M, Kanjal MI, Saeed M, Jamal MA, Haq AU, Iqbal M, Haq EU, Ali S. Degradation of moxifloxacin by ionizing radiation and toxicity assessment. Z PHYS CHEM 2021. [DOI: 10.1515/zpch-2019-1559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The gamma ray induced degradation of moxifloxacin in aqueous media has been evaluated. The drug solutions (50 & 100 mg/L) were irradiated to absorbed doses of 0.3, 0.6, 0.9, 1.2, 1.5, 2, 3 and 4 kGy using Cs-137 gamma radiation source. The parameters such as drug initial concentration, oxidant (H2O2) concentration and gamma ray absorbed doses were optimized. The efficiency of Advanced oxidation processes (AOP) was evaluated on the basis of degradation, reduction in chemical oxygen demand (COD) and toxicity reduction of the drug. The maximum degradation of 94.01 and 88.30% was achieved when drug solutions were exposed to gamma irradiation absorbed dose of 4 kGy which enhanced to 100 and 99.06% in the presence of H2O2 (0.5 mL/L) for 50 and 100 mg/L respectively. A significant reduction in COD 72 and 75% for 50 mg/L while 65 and 69% in case of 100 mg/L was noted using gamma and gamma/H2O2 respectively at absorbed dose of 4 kGy. The parameters such as dose constant (k), removal efficiency (G-value), gamma ray absorbed doses required for 50, 90 and 99% degradation (D
0.50, D
0.90 and D
0.99) have been calculated. The radiolytic degradation was monitored by UV–Vis spectrophotometer and HPLC, FT-IR studies were performed to investigate the change in functional groups before and after treatment, while GC-MS analysis was carried out to monitor intermediates/degraded end-products. The FT-IR spectra has shown complete destruction of aromatic rings after radiation treatment but a minor peak appeared at 1216 cm−1 corresponding to CO stretching. The GC-MS study for the drug samples treated with gamma/H2O2 has shown no any significant peak which confirms the complete degradation. The cytotoxicity of treated samples was carried out by hemolytic assay and mutagenicity using Ames test before and after each treatment. The hemolytic test showed 73.92% hemolysis, while gamma/H2O2 treatment reduced the mutagenicity to 74.08 and 65.66% against TA98 and TA100 bacterial strains respectively. The response surface methodology (RSM) was employed to optimize the data. The obtained data elaborate that gamma/H2O2process is promising approach for the remediation of pharmaceutical waste effluent.
Collapse
Affiliation(s)
- Majid Muneer
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| | - Muhammad Imran Kanjal
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| | - Muhammad Saeed
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| | - Muhammad Asghar Jamal
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| | - Atta ul Haq
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| | - Munawar Iqbal
- Department of Chemistry , University of Lahore , Lahore , Pakistan
| | - Ehsan ul Haq
- Pakistan Council of Scientific and Industrial Research (PCSIR) , Lahore , Pakistan
| | - Saddaqat Ali
- Department of Chemistry , Government College University , Faisalabad , 38000 , Pakistan
| |
Collapse
|
12
|
Adeel M, Saeed M, Khan I, Muneer M, Akram N. Synthesis and Characterization of Co-ZnO and Evaluation of Its Photocatalytic Activity for Photodegradation of Methyl Orange. ACS Omega 2021; 6:1426-1435. [PMID: 33490802 PMCID: PMC7818618 DOI: 10.1021/acsomega.0c05092] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/29/2020] [Indexed: 05/20/2023]
Abstract
Photocatalysis is one of the techniques used for the eradication of organic pollutants from wastewater. In this study, Co-ZnO was tested as a photocatalyst for the degradation of methyl orange under irradiation of visible light. Co-ZnO loaded with 5%, 10%, and 15% Co was prepared by the precipitation method. The advanced techniques including X-ray diffraction, X-ray photoelectron spectroscopy, diffuse reflectance UV-visible spectroscopy, photoelectrochemical measurements, temperature-programmed desorption, photoluminescence, and fluorescence spectroscopy related to OH• measurements were used for characterization of prepared Co-ZnO. Experiments showed that 10% Co-ZnO was a highly efficient catalyst for the photodegradation of methyl orange as compared to ZnO. The enhanced photocatalytic activity of Co-ZnO is attributed to the implantation of Co which inhibits the electron-hole recombination. A 100 mg/L solution of methyl orange dye was completely degraded within 130 min. The reaction kinetics has been described in terms of the Eley-Rideal mechanism.
Collapse
Affiliation(s)
- Muhammad Adeel
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Saeed
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
- . Phone: +92 346 9010903
| | - Iltaf Khan
- College
of Chemical and Materials Engineering, Beijing
Institute of Petrochemical Technology, Beijing 102617, China
| | - Majid Muneer
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| | - Nadia Akram
- Department
of Chemistry, Government College University
Faisalabad, Faisalabad 38000, Pakistan
| |
Collapse
|
13
|
Muneer M, Kanjal MI, Iqbal M, Saeed M, Khosa MK, Ud Den NZ, Ali S, Nazir A. Gamma and UV radiations induced treatment of anti-cancer methotrexate drug in aqueous medium: Effect of process variables on radiation efficiency evaluated using bioassays. Appl Radiat Isot 2020; 166:109371. [PMID: 33080553 DOI: 10.1016/j.apradiso.2020.109371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 06/20/2020] [Accepted: 08/09/2020] [Indexed: 12/26/2022]
Abstract
This studystudy focuses on the effect of radiation treatment and hydrogen peroxide (H2O2) on the toxicity of anticancer methotrexate. For cytotoxicity, different bioassays such as Allium cepa, hemolytic, brine shrimp were employed. The Ames test was used for mutagenicity analysis. The solutions having concentrations 5, 10 and 15 ppm were irradiated with UV radiation exposure time 15, 30, 45, 60, 75 and 90 min and gamma radiation absorbed doses 0.3, 0.6, 0.9, 1.2, 2, 3 and 4 kGy in combination with with H2O2. There was a clear difference observed for aqueous solution before and after treatment with reference to cytotoxicity and mutagenicity. In Allium cepa test, a 47.07, 44.36 and 38.23% increase in root length (RL), root count (RC) and mitotic index (MI) was observed, respectively, for UV/H2O2 treatment and in the case of gamma/H2O2 treatment, the RL, RC and MI were increased up to 49.39, 52.63 and 52.38%, respectively. Brine shrimp test has shown 85.95 and 91.30% decrease in toxicity using UV/H2O2 and gamma/H2O2 respectively, while hemolytic test has shown 19.21 and 26.32% hemolysis using UV/H2O2 and gamma/H2O2, respectively. The mutagenicity reduced up to 82.3, 86.46 and 89.59% (TA98) and 85.42, 87.5 and 90.63% (TA100) for UV/H2O2 while 89.59, 90.63 and 93.75% (TA98) and 84.38, 89.59 and 92.71% (TA100) for gamma/H2O2. The UV and gamma radiation along with H2O2 based AOPs are promising approaches to detoxify the wastewater which can be extended to real hospital liquid effluent effectively.
Collapse
Affiliation(s)
- Majid Muneer
- Department of Chemistry, Government College University Faisalabad, 38000, Pakistan.
| | | | - Munawar Iqbal
- Department of Chemistry, The University of Lahore, Lahore, 53700, Pakistan.
| | - Muhammad Saeed
- Department of Chemistry, Government College University Faisalabad, 38000, Pakistan
| | | | - Nighat Zia Ud Den
- Department of Biochemistry, Government College University Faisalabad, 38000, Pakistan
| | - Saddaqat Ali
- Department of Chemistry, Government College University Faisalabad, 38000, Pakistan
| | - Arif Nazir
- Department of Chemistry, The University of Lahore, Lahore, 53700, Pakistan
| |
Collapse
|
14
|
Kanjal MI, Muneer M, Abdelhaleem A, Chu W. Degradation of methotrexate by UV/peroxymonosulfate: Kinetics, effect of operational parameters and mechanism. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.05.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
15
|
Nisar A, Saeed M, Usman M, Muneer M, Adeel M, Khan I, Akhtar J. Kinetic modeling of ZnO‐rGO catalyzed degradation of methylene blue. INT J CHEM KINET 2020. [DOI: 10.1002/kin.21389] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Asif Nisar
- Department of ChemistryGovernment College University Faisalabad Faisalabad Pakistan
| | - Muhammad Saeed
- Department of ChemistryGovernment College University Faisalabad Faisalabad Pakistan
| | - Muhammad Usman
- Department of ChemistryGovernment College University Faisalabad Faisalabad Pakistan
| | - Majid Muneer
- Department of ChemistryGovernment College University Faisalabad Faisalabad Pakistan
| | - Muhammad Adeel
- Department of ChemistryGovernment College University Faisalabad Faisalabad Pakistan
| | - Iltaf Khan
- Key Laboratory of Functional Inorganic Material ChemistryHeilongjiang University Harbin People's Republic of China
| | - Javaid Akhtar
- Department of Chemical & Material EngineeringCollege of EngineeringKing Abdul Aziz University Jeddah Kingdom of Saudi Arabia
| |
Collapse
|
16
|
Saeed M, Usman M, Muneer M, Akram N, Haq AU, Tariq M, Akram F. Synthesis of Ag-Fe3O4 nanoparticles for degradation of methylene blue in aqueous medium. B CHEM SOC ETHIOPIA 2020. [DOI: 10.4314/bcse.v34i1.11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Fe3O4 known as magnetite is one of the oxides of iron which plays a major role in various fields of sciences. Fe3O4 was synthesized by precipitation method using NH3.H2O, FeCl2.4H2O and FeCl3.6H2O as precursor materials. For synthesis of 5% Ag-Fe3O4, the green synthetic method was used for immobilization of Ag nanoparticles on Fe3O4 using leaves extract of Calotropis gigantea plant. The synthesized Fe3O4 and 5% Ag-Fe3O4 were employed as catalyst in degradation of methylene blue. The photo catalytic activity of Fe3O4 was remarkably enhanced by doping of Fe3O4 with Ag nanoparticles. Advanced instrumental techniques including XRD, EDX, TGA and SEM were used for characterization of synthesized particles. The immobilization of Ag on Fe3O4 enhanced the photo degradation of methylene blue from 40 to 72% at 40 °C which confirms that 5% Ag-Fe3O4 is an active catalyst for treatment of dye contaminated water. Ag-Fe3O4 exhibited almost same catalytic activity in two successive cycles.
Bull. Chem. Soc. Ethiop. 2020, 34(1), 123-134.
DOI: https://dx.doi.org/10.4314/bcse.v34i1.11
Collapse
|
17
|
Amin N, Rehman FU, Adeel S, Ahamd T, Muneer M, Haji A. Sustainable application of cochineal-based anthraquinone dye for the coloration of bio-mordanted silk fabric. Environ Sci Pollut Res Int 2020; 27:6851-6860. [PMID: 31879870 DOI: 10.1007/s11356-019-06868-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Natural colors particularly animal-based colorants are employed in the field of cosmetics, food, and flavors and also gaining popularity in textiles, due to their soothing nature. In this study, the microwave-assisted extraction of colorant from cochineal insects for dyeing of bio-mordanted silk has been carried out. Acidic, methanolic, and acidified methanol solubilized media were used to extract the natural colorant from cochineal under microwave irradiation for 1-6 min. Bio-mordants have been employed at optimized conditions to make the process greener and sustainable. It is found that acid solubilized extract of pH 4, employed at 55 °C for 55 min containing 5 g/100 mL of Glauber's salt as exhausting agent has given high color strength onto microwave-treated silk fabric. Suggested ISO standards for colorfastness have revealed that bio-mordants have given excellent color depth and excellent rating of fastness properties, compared with chemical mordants used. It is found that microwave treatment has not only improved the dyeing behavior of colorant extracted from cochineal in acid solubilized medium but also enhanced the color characteristics onto bio-mordanted silk fabric.
Collapse
Affiliation(s)
- Nimra Amin
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Punjab, 38000, Pakistan
| | - Fazal-Ur- Rehman
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Punjab, 38000, Pakistan.
| | - Shahid Adeel
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Punjab, 38000, Pakistan
| | - Tanvir Ahamd
- Department of Statistics, Government College University Faisalabad, Faisalabad, Punjab, 38000, Pakistan
| | - Majid Muneer
- Department of Textile Engineering, Yazd University, Yazd, Iran
| | - Aminoddin Haji
- Department of Textile Engineering, Yazd University, Yazd, Iran
| |
Collapse
|
18
|
|
19
|
Sid Ahmed MA, Hassan AAI, Abu Jarir S, Abdel Hadi H, Bansal D, Abdul Wahab A, Muneer M, Mohamed SF, Zahraldin K, Hamid JM, Alyazidi MA, Mohamed M, Sultan AA, Söderquist B, Ibrahim EB, Jass J. Emergence of Multidrug- and Pandrug- Resistant Pseudomonas aeruginosa from Five Hospitals in Qatar. Infect Prev Pract 2019; 1:100027. [PMID: 34368684 PMCID: PMC8336314 DOI: 10.1016/j.infpip.2019.100027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 11/11/2019] [Indexed: 11/25/2022] Open
Abstract
Background A global rise in multidrug-resistant (MDR) nosocomial infections has led to a significant increase in morbidity and mortality. MDR Gram-negative bacteria (GNB) are recognised for rapidly developing drug resistance. Despite Pseudomonas aeruginosa being the second most common GNB isolated from healthcare associated infections, the magnitude of MDR P. aeruginosa (MDR-PA) has not been evaluated in Qatar. Aim To assess the prevalence and antimicrobial susceptibility patterns of MDR-PA from 5 major hospitals in Qatar. Methods A total of 2533 P. aeruginosa clinical isolates were collected over a one-year period. MDR-PA was defined as resistance to at least one agent of ≥ 3 antibiotic classes. Clinical and demographic data were collected prospectively. Findings The overall prevalence of MDR-PA isolates was 8.1% (205/2533); the majority of isolates were from patients exposed to antibiotics during 90 days prior to isolation (85.4 %, 177/205), and the infections were mainly hospital-acquired (95.1%, 195/205) with only 4.9% from the community. The majority of MDR-PA isolates were resistant to cefepime (96.6%, 198/205), ciprofloxacin, piperacillin/tazobactam (91%, 186/205), and meropenem (90%, 184/205). Patient comorbidities with MDR-PA were diabetes mellitus (47.3%, n=97), malignancy (17.1%, n=35), end-stage renal disease (13.7%, n=28) and heart failure (10.7%, n=22). Conclusion There was a significant prevalence of MDR-PA in Qatar, primarily from healthcare facilities and associated with prior antibiotic treatment. There was an alarming level of antimicrobial resistance to carbapenems. Our results are part of a national surveillance of MDR to establish effective containment plans.
Collapse
Affiliation(s)
- M A Sid Ahmed
- Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar.,The Life Science Centre - Biology, School of Science and Technology, Örebro University, Örebro, Sweden
| | - A A I Hassan
- Division of General Medicine, Wayne State University, Detroit, MI, USA
| | - S Abu Jarir
- Departments of Infectious Diseases, Hamad Medical Corporation, Doha, Qatar
| | - H Abdel Hadi
- Departments of Infectious Diseases, Hamad Medical Corporation, Doha, Qatar
| | - D Bansal
- Communicable Disease Control Programs, Ministry of Public Health, Doha, Qatar
| | - A Abdul Wahab
- Departments of Pediatrics, Hamad Medical Corporation, Doha, Qatar.,Weill Cornell Medicine-Qatar, Doha, Qatar
| | - M Muneer
- Plastic Surgery Department, Hamad Medical Corporation, Doha, Qatar
| | - S F Mohamed
- Hematology Department, Hamad Medical Corporation, Doha, Qatar
| | - K Zahraldin
- Departments of Pediatrics, Hamad Medical Corporation, Doha, Qatar
| | - J M Hamid
- Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - M A Alyazidi
- Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar
| | - M Mohamed
- Department of Pharmacy, Women Wellness and Research Center, Hamad Medical Corporation, Doha, Qatar
| | - A A Sultan
- Department of Microbiology and Immunology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - B Söderquist
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - E B Ibrahim
- Microbiology Division, Department of Laboratory Medicine and Pathology, Hamad Medical Corporation, Doha, Qatar.,Department of Microbiology and Immunology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - J Jass
- The Life Science Centre - Biology, School of Science and Technology, Örebro University, Örebro, Sweden
| |
Collapse
|
20
|
Saeed M, Ibrahim M, Muneer M, Akram N, Usman M, Maqbool I, Adeel M, Nisar A. ZnO–TiO2: Synthesis, Characterization and Evaluation of Photo Catalytic Activity towards Degradation of Methyl Orange. Z PHYS CHEM 2019. [DOI: 10.1515/zpch-2019-1536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Here in, we report the synthesis and characterization of ZnO–TiO2 composite as a potential photo catalyst for photo degradation of methyl orange under UV irradiation. ZnO–TiO2 with 1:1 ratio was synthesized via wet incipient impregnation method using TiO2 and Zn(NO3)2 ⋅ 6H2O as precursor material and the prepared composite was characterized by XRD, EDX and SEM. The synthesized composite was employed as photo catalyst for photo degradation of methyl orange. The photo degradation results showed that ZnO–TiO2 exhibited better catalytic performance than ZnO and TiO2 alone. The methyl orange photo degradation efficiency was determined to be 98, 75 and 60% over ZnO–TiO2, ZnO and TiO2 respectively using 50 mL solution of 100 mg/L at 40 °C for 120 min. The ZnO–TiO2 catalyzed photo degradation of methyl orange followed pseudo-first-order kinetic in terms of Langmuir–Hinshelwood mechanism.
Collapse
Affiliation(s)
- Muhammad Saeed
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Muhammad Ibrahim
- Department of Environmental Sciences and Engineering , Government College University Faisalabad , Faisalabad , Pakistan
| | - Majid Muneer
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Nadia Akram
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Muhammad Usman
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Iqra Maqbool
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Muhammad Adeel
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| | - Asif Nisar
- Department of Chemistry , Government College University Faisalabad , Jhang Road , Faisalabad , Pakistan
| |
Collapse
|
21
|
Saeed M, Muneer M, Akram N, ul Haq A, Afzal N, Hamayun M. Synthesis and characterization of silver loaded alumina and evaluation of its photo catalytic activity on photo degradation of methylene blue dye. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.06.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
22
|
Alam U, Shah TA, Khan A, Muneer M. One-pot ultrasonic assisted sol-gel synthesis of spindle-like Nd and V codoped ZnO for efficient photocatalytic degradation of organic pollutants. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.11.048] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
Khan A, Alam U, Zafar S, Muneer M. Fe(III)-grafted K-doped
$$\hbox {g-C}_{{3}}\hbox {N}_{{4}}$$
g-C
3
N
4
/rGO composite photocatalyst with efficient activity towards the degradation of organic pollutants
$$^{\S }$$
§. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1552-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
24
|
Khan A, Alam U, Ali D, Muneer M. Visible‐Light Induced Simultaneous Oxidation of Methyl Orange and Reduction of Cr(VI) with Fe(III)‐Grafted K
2
Ti
6
O
13
Photocatalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201800982] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Azam Khan
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Umair Alam
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| | - Danish Ali
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| | - M. Muneer
- Department of ChemistryAligarh Muslim University Aligarh 202002 India
| |
Collapse
|
25
|
Saeed M, Muneer M, Mumtaz N, Siddique M, Akram N, Hamayun M. Ag-Co 3 O 4 : Synthesis, characterization and evaluation of its photo-catalytic activity towards degradation of rhodamine B dye in aqueous medium. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.02.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
26
|
Shah TA, Alam U, Alam M, Park S, Muneer M. Single crystal X-ray structure, spectroscopic and DFT studies of Imidazo[2,1-b]thiazole: 2-(3-hydroxy-3-phenylimidazo[2,1-b]thiazol-2(3H)-ylidene)-1-phenylethanone. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
27
|
Alsager OA, Basfar AA, Muneer M. Decomposition byproducts induced by gamma radiation and their toxicity: the case of 2-nitrophenol. Environ Technol 2018; 39:967-976. [PMID: 28393679 DOI: 10.1080/09593330.2017.1317840] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 04/05/2017] [Indexed: 06/07/2023]
Abstract
The induced degradation and detoxification of 2-nitrophenol (2-NP) in aqueous media by gamma irradiation were carefully evaluated in this study. Gamma radiation at absorbed doses as low as 20 kGy was able to degrade 2-NP to reach a removal of at least 85% across the investigated range of concentration (50-150 ppm). 2-NP breaks down to aromatic-based compounds with increasing number of byproducts upon increasing the radiation treatment from the absorbed dose of 50% decomposition (D50) to the absorbed dose of 90% decomposition (D90), after which no byproducts could be detected, indicating the formation of undetectable aliphatic hydrocarbons, insoluble, or volatile byproducts. Toxicology studies showed that the degradation of 2-NP under absorbed doses up to D90 resulted in a more toxic byproduct than the parent compound, and a remarkable reduction in the toxicity was observed with the irradiated samples with absorbed doses above D90. Varying the pH of the media to acidic or basic conditions did not significantly alter the degradation behavior of 2-NP. However, a notable improvement of the detoxification was associated with the samples of acidic pH. Adding 0.5% of H2O2 to 2-NP solutions had a positive effect by reducing D90 by a factor of nine and diminishing the toxicity by twofolds.
Collapse
Affiliation(s)
- Omar A Alsager
- a National Center for Irradiation Technology, Nuclear Science Research Institute , King Abdulaziz City for Science and Technology , Riyadh , Saudi Arabia
| | - Ahmed A Basfar
- a National Center for Irradiation Technology, Nuclear Science Research Institute , King Abdulaziz City for Science and Technology , Riyadh , Saudi Arabia
| | - Majid Muneer
- a National Center for Irradiation Technology, Nuclear Science Research Institute , King Abdulaziz City for Science and Technology , Riyadh , Saudi Arabia
| |
Collapse
|
28
|
|
29
|
Shah TA, Raza W, Muneer M, Mir NA, Ahmad M. Triphenylphosphine/Isocyanide Mediated Synthesis of Benzo[4,5]imidazo[1,2‐
a
]pyrimidine, Enamine Ketones and Secondary Ketimines. ChemistrySelect 2018. [DOI: 10.1002/slct.201702724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tariq A. Shah
- Department of ChemistryAligarh Muslim University Aligarh- 202002 India, Tel. No: +919897279787
- Department of ChemistryIndian Institute of Technology Guwahati Guwahati- 781039 India
| | - Waseem Raza
- Department of ChemistryAligarh Muslim University Aligarh- 202002 India, Tel. No: +919897279787
| | - M. Muneer
- Department of ChemistryAligarh Muslim University Aligarh- 202002 India, Tel. No: +919897279787
| | - Niyaz A. Mir
- Department of ChemistryAligarh Muslim University Aligarh- 202002 India, Tel. No: +919897279787
| | - Musheer Ahmad
- Department of Applied ChemistryAligarh Muslim University Aligarh- 202002 India
| |
Collapse
|
30
|
Alam U, Khan A, Ali D, Bahnemann D, Muneer M. Comparative photocatalytic activity of sol–gel derived rare earth metal (La, Nd, Sm and Dy)-doped ZnO photocatalysts for degradation of dyes. RSC Adv 2018; 8:17582-17594. [PMID: 35539270 PMCID: PMC9080395 DOI: 10.1039/c8ra01638k] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 05/06/2018] [Indexed: 12/21/2022] Open
Abstract
Rare earth metal doping into semiconductor oxides is considered to be an effective approach to enhance photocatalytic activity due to its ability to retard the electron–hole pair recombination upon excitation. Herein, we report the synthesis of different rare earth metal (La, Nd, Sm and Dy)-doped ZnO nanoparticles using a facile sol–gel route followed by evaluation of their photocatalytic activity by studying the degradation of methylene blue (MB) and Rhodamine B (RhB) under UV-light irradiation. Different standard analytical techniques were employed to investigate the microscopic structure and physiochemical properties of the prepared samples. The formation of the hexagonal wurtzite structure of ZnO was established by XRD and TEM analyses. In addition, the incorporation of rare earth metal into ZnO is confirmed by the shift of XRD planes towards lower theta values. All metal doped ZnO showed improved photocatalytic activity toward the degradation of MB, of which, Nd-doped ZnO showed the best activity with 98% degradation efficiency. In addition, mineralization of the dye was also observed, indicating 68% TOC removal in 180 min with Nd-doped ZnO nanoparticles. The influence of different operational parameters on the photodegradation of MB was also investigated and discussed in detail. Additionally, a possible photocatalytic mechanism for degradation of MB over Nd-doped ZnO nanoparticles has been proposed and involvement of hydroxyl radicals as reactive species is elucidated by radical trapping experiments. In this study, we compared the photocatalytic activity of sol–gel derived rare earth metal (La, Nd, Sm and Dy)-doped ZnO photocatalysts by studying the degradation of MB and RhB under UV light irradiation.![]()
Collapse
Affiliation(s)
- Umair Alam
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Azam Khan
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Danish Ali
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Detlef Bahnemann
- Photocatalysis and Nanotechnology
- Institut fuer Technische Chemie
- Gottfried Wilhelm Leibniz Universitaet Hannover
- D-30167 Hannover
- Germany
| | - M. Muneer
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| |
Collapse
|
31
|
Alam U, Kumar S, Bahnemann D, Koch J, Tegenkamp C, Muneer M. Harvesting visible light with MoO3 nanorods modified by Fe(iii) nanoclusters for effective photocatalytic degradation of organic pollutants. Phys Chem Chem Phys 2018; 20:4538-4545. [DOI: 10.1039/c7cp08206a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fe(iii) grafted MoO3 nanorods were prepared by a hydrothermal-cum-impregnation technique.
Collapse
Affiliation(s)
- U. Alam
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - S. Kumar
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - D. Bahnemann
- Photocatalysis and Nanotechnology
- Institut fuer Technische Chemie
- Gottfried Wilhelm Leibniz Universitaet Hannover
- D-30167 Hannover
- Germany
| | - J. Koch
- Institut fuer Festkoerperphysik Abteilung Atomare and Molekulare Strukturen Leibniz Universitaet Hannover
- D-30167 Hannover
- Germany
| | - C. Tegenkamp
- Institut fuer Festkoerperphysik Abteilung Atomare and Molekulare Strukturen Leibniz Universitaet Hannover
- D-30167 Hannover
- Germany
| | - M. Muneer
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| |
Collapse
|
32
|
Alam U, Khan A, Bahnemann D, Muneer M. Synthesis of iron and copper cluster-grafted zinc oxide nanorod with enhanced visible-light-induced photocatalytic activity. J Colloid Interface Sci 2018; 509:68-72. [DOI: 10.1016/j.jcis.2017.08.093] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 08/23/2017] [Accepted: 08/29/2017] [Indexed: 11/30/2022]
|
33
|
Jamal MA, Naseem B, Khosa MK, Muneer M, Khan JH. Effect of anionic micellar medium on thermo-acoustical parameters of aspartic acid and serine solutions. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.04.073] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Ahmad S, Sultan A, Raza W, Muneer M, Mohammad F. Boron nitride based polyaniline nanocomposite: Preparation, property, and application. J Appl Polym Sci 2016. [DOI: 10.1002/app.43989] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Sharique Ahmad
- Department of Applied Chemistry; Faculty of Engineering and Technology, Aligarh Muslim University; Aligarh 202002 India
| | - Adil Sultan
- Department of Applied Chemistry; Faculty of Engineering and Technology, Aligarh Muslim University; Aligarh 202002 India
| | - Waseem Raza
- Department of Chemistry; Faculty of Science, Aligarh Muslim University; Aligarh 202002 India
| | - M. Muneer
- Department of Chemistry; Faculty of Science, Aligarh Muslim University; Aligarh 202002 India
| | - Faiz Mohammad
- Department of Applied Chemistry; Faculty of Engineering and Technology, Aligarh Muslim University; Aligarh 202002 India
| |
Collapse
|
35
|
Shah TA, Ahmad Z, Rath N, Muneer M. An environmentally benign approach for the synthesis of 3,4,5-trisubstituted 2-aminofurans under solvent-free conditions via isocyanide-based multicomponent approach. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
36
|
Raza W, Khan A, Alam U, Muneer M, Bahnemann D. Facile fabrication of visible light induced Bi 2 O 3 nanorod using conventional heat treatment method. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2015.11.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
37
|
Raza W, Faisal SM, Owais M, Bahnemann D, Muneer M. Facile fabrication of highly efficient modified ZnO photocatalyst with enhanced photocatalytic, antibacterial and anticancer activity. RSC Adv 2016. [DOI: 10.1039/c6ra06774c] [Citation(s) in RCA: 122] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Photocatalytic degradation of organic pollutants using hexagonal Er and Nd doped ZnO photocatalyst.
Collapse
Affiliation(s)
- Waseem Raza
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Syed Mohammad Faisal
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Mohammad Owais
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh-202002
- India
| | - D. Bahnemann
- Photocatalysis and Nanotechnology
- Institut fuer Technische Chemie
- Gottfried Wilhelm Leibniz Universitaet Hannover
- D-30167 Hannover
- Germany
| | - M. Muneer
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| |
Collapse
|
38
|
Shah TA, Ahmad Z, Mir NA, Muneer M, Rath NP, Ahmad M. Correction: One step synthesis of highly functionalized thiazolo[3,2-b][1,2,4]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine. RSC Adv 2016. [DOI: 10.1039/c6ra90004f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Correction for ‘One step synthesis of highly functionalized thiazolo[3,2-b][1,2,4]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine’ by Tariq A. Shah et al., RSC Adv., 2015, 5, 107931–107937.
Collapse
Affiliation(s)
- Tariq A. Shah
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Zubair Ahmad
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Niyaz A. Mir
- Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore-560012
- India
| | - M. Muneer
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry and Centre for Nanoscience
- University of Missouri-St. Louis
- USA
| | - Musheer Ahmad
- Supramolecular Chemistry Lab
- Department of Chemistry
- IIT Kanpur
- India
| |
Collapse
|
39
|
Khosa MK, Jamal MA, Saif MJ, Muneer M, Rehman F, Farman M, Shoaib HM, Shahid M, Hameed S. Synthesis, Spectral investigation (¹H, ¹³C) and Anti-microbial Screening of benzophenone imines. Pak J Pharm Sci 2015; 28:2167-2171. [PMID: 26639485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
New series of benzophenone imines with general formula Ph2-C=NR; R = Benzyl, 4-Fluorobenzyl, Naphthyl, Phenyl, 4-Nitrophenyl were synthesized by condensation of dichlorodiphenylmethane and different aromatic primary amines (1:1) Those imines were characterized by different physiochemical and spectroscopic techniques like melting point, elemental analysis, FT-IR, multinuclear NMR (¹H, ¹³C). After characterization, imines were subjected to anti-microbial activities. All compounds showed promising activity against different bacterial strains like Escherichia coli, Bacillussubtilis, Pasturellam ultocida and Staphylococcus aureus as well as fungal strains like Alternata alternaria, Ganoderma lucidium, Penicillium notatum and Trichoderma harzianum using Amoxicillin and Flucanazole as a standard drugs respectively.
Collapse
Affiliation(s)
| | | | | | - Majid Muneer
- Departmentof Chemistry, Quaid-e-Azam University, Islamabad, Pakistan
| | - Fazalur Rehman
- Departmentof Chemistry, Quaid-e-Azam University, Islamabad, Pakistan
| | - Muhammad Farman
- Departmentof Chemistry and Biochemistry University of Agricultural, Faisalabad, Pakistan
| | | | | | - Shabnam Hameed
- Departmentof Chemistry Government College University, Faisalabad, Pakistan
| |
Collapse
|
40
|
Jamal MA, Khosa MK, Muneer M, Rehman F, Saif MJ, Bhatti HN, Naz S, Javed J. Acoustical behavior of some amino acids in aqueous disodium citrate solutions over temperature range (298.15-313.15) K. Pak J Pharm Sci 2015; 28:1613-1617. [PMID: 26408870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sound velocity, U, and density, ρ of some amino acids viz. glycine, methionine, phenylalanine and tryptophan were determined in 0.1, 0.2 and 0.3 mol kg⁻¹ aqueous disodium citrate solutions as a function of concentration at 298-313.15K using DSA 5000M. The experimental data were further used to compute various acoustical parameters such as adiabatic compressibility, β, apparent molar compressibility, ∅(k), partial molar compressibility, ∅(0)k, transfer adiabatic compressibility, Φ(0)(ktr), constant, Sk, and the hydration number, nH. The transfer adiabatic compressibility shows the supremacy of hydrophilic-ionic interactions under hydrophobic-ionic interactions. The above-mentioned parameters are relevant for the efficiency of mediation in pharmacology and can be interpreted in terms of structure-making or structure-breaking ability of these amino acids in the solution.
Collapse
Affiliation(s)
| | | | - Majid Muneer
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Fazalur Rehman
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Muhammad Jawad Saif
- Department of Applied Chemistry, Government College University, Faisalabad, Pakistan
| | - Haq Nawaz Bhatti
- Department of Chemistry, University of Agriculture, Faisalabad, Pakistan
| | - Sadaf Naz
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Jaweria Javed
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| |
Collapse
|
41
|
Shah TA, Ahmad Z, Mir NA, Muneer M, Rath NP, Ahmad M. One step synthesis of highly functionalized thiazolo[3,2-b][1,2,4]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine. RSC Adv 2015. [DOI: 10.1039/c5ra21270g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and straight forward methodology for the preparation of novel functionalized thiazolo[3,2-b]triazole, triazolo[1,5-a]pyrimidine and triazolo[3,4-b][1,3,4]thiadiazine.
Collapse
Affiliation(s)
- Tariq A. Shah
- Department of Chemistry
- Aligarh Muslim University
- Aligarh – 202002
- India
| | - Zubair Ahmad
- Department of Chemistry
- Aligarh Muslim University
- Aligarh – 202002
- India
| | - Niyaz A. Mir
- Department of Chemistry
- Aligarh Muslim University
- Aligarh – 202002
- India
| | - M. Muneer
- Department of Chemistry
- Aligarh Muslim University
- Aligarh – 202002
- India
| | - Nigam P. Rath
- Department of Applied Chemistry
- Aligarh Muslim University
- Aligarh – 202002
- India
| | - Musheer Ahmad
- Supramolecular Lab
- Department of Chemistry
- Indian Institute of Technology
- Kanpur – 208016
- India
| |
Collapse
|
42
|
Mehraj O, Mir NA, Pirzada BM, Sabir S, Muneer M. In-situ anion exchange synthesis of AgBr/Ag2CO3 hybrids with enhanced visible light photocatalytic activity and improved stability. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.07.027] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
43
|
Haque MM, Raza W, Khan A, Muneer M. Heterogeneous Photocatalyzed Degradation of Barbituric Acid and Matrinidazole Under Visible Light Induced Ni, Mn, Mo and La-Doped TiO 2. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/jnan.2014.1182] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
44
|
Mir NA, Shah TA, Ahmed S, Muneer M, Rath NP, Ahmad M. One pot synthesis of imidazo[2,1-b]thiazoles and benzo[d]thiazolo[3,2-a]imidazoles. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.085] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
45
|
Bushra R, Shahadat M, Ahmad A, Nabi SA, Umar K, Oves M, Raeissi AS, Muneer M. Synthesis, characterization, antimicrobial activity and applications of polyanilineTi(IV)arsenophosphate adsorbent for the analysis of organic and inorganic pollutants. J Hazard Mater 2014; 264:481-489. [PMID: 24238807 DOI: 10.1016/j.jhazmat.2013.09.044] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 08/30/2013] [Accepted: 09/17/2013] [Indexed: 06/02/2023]
Abstract
A novel polyaniline based composite cation exchange material has been synthesized by simple chemical route and characterized on the basis of sophisticated techniques. XRD and SEM analyses reveal the amorphous morphology of the material. The partition coefficient studies of different metal ions on the material were performed in DMW and diverse concentrations of HClO4 solutions. On the basis of high Kd values some significant separations of heavy toxic metal ions were achieved from synthetic mixtures as well as tap water samples by using columns of this exchanger. For the optimum adsorption of dye on the material, the effect of various parameters along with Langmuir and Freundlich adsorption isotherm were examined. The observed result of conducting measurement indicates that the material covers semiconductor range. The photochemical degradation of industrial dyes and antimicrobial activity were also investigated which show significant results than some of the known antibiotics. On the basis of good ion exchange capacity along with photochemical degradation and microbial activity, polyanilineTi(IV)arsenophosphate can be considered as an excellent conducting material for the treatment metal ions and degradation of organic pollutants.
Collapse
Affiliation(s)
- Rani Bushra
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
| | - Mohammad Shahadat
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Anees Ahmad
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - S A Nabi
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Khalid Umar
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - M Oves
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - A S Raeissi
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - M Muneer
- Analytical Research Laboratory, Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| |
Collapse
|
46
|
Adeel S, Fazal-ur-Rehman, Hanif R, Zuber M, Ehsan-ul-Haq, Muneer M. Ecofriendly Dyeing of UV-Irradiated Cotton Using Extracts of Acacia nilotica Bark (Kikar) as Source of Quercetin. ACTA ACUST UNITED AC 2014. [DOI: 10.14233/ajchem.2014.15829] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
47
|
Mir NA, Haque MM, Khan A, Muneer M, Vijayalakshmi S. Photocatalytic degradation of herbicide bentazone in aqueous suspension of TiO2: mineralization, identification of intermediates and reaction pathways. Environ Technol 2014; 35:407-15. [PMID: 24600881 DOI: 10.1080/09593330.2013.829872] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Semiconductor-mediated hydrogen peroxide-assisted photocatalytic degradation of a selected herbicide, Bentazone (1) has been investigated in aqueous suspensions of TiO2 under a variety of conditions. The degradation was studied by monitoring the depletion in total organic carbon content as a function of irradiation time. The degradation kinetics was investigated under different conditions such as type of TiO2 (Anatase/Anatase-Rutile mixture), reaction pH, catalyst dosage and hydrogen peroxide (H202) concentration. The degradation rates were found to be strongly influenced by all the above parameters. Titanium dioxide Degussa P25 was found to be more efficient as compared with other two commercially available TiO2 powders like Hombikat UV100 and PC500 from Millennium Inorganic Chemicals. Gas Chromatography-Mass Spectrometry (GC-MS) analysis of the irradiated mixture of Bentazone (1) indicates the formation of several intermediate products which have been characterized on the basis of molecular ion/mass fragmentation pattern and also on comparison with the National Institute of Standards and Technology (NIST) library. Plausible mechanism for the formation of different products during photocatalytic treatment of Bentazone in the presence of TiO2 has been proposed. The use of H202 substantially increased the efficiency of TiO2 photocatalytic degradation.
Collapse
Affiliation(s)
- Niyaz A Mir
- Department of Chemistry, Aligarh Muslim University. Aligarh 202002, India
| | - M M Haque
- Department of Chemistry, Aligarh Muslim University. Aligarh 202002, India
| | - A Khan
- Department of Chemistry, Aligarh Muslim University. Aligarh 202002, India
| | - M Muneer
- Department of Chemistry, Aligarh Muslim University. Aligarh 202002, India
| | | |
Collapse
|
48
|
Khan A, Mir NA, Haque MM, Muneer M. Photocatalysed Mineralization of Three Selected Antibacterial Drugs, Kanamycin Acid Sulfate, Ampicillin and Pyrazinamide in Aqueous Suspensions of TiO 2/H 2O 2. ACTA ACUST UNITED AC 2013. [DOI: 10.1166/mat.2013.1099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
49
|
Mir N, Khan A, Umar K, Muneer M. Photocatalytic Study of a Xanthene Dye Derivative, Phloxine B in Aqueous Suspension of TiO2: Adsorption Isotherm and Decolourization Kinetics. ACTA ACUST UNITED AC 2013. [DOI: 10.1166/eef.2013.1052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
50
|
Mir NA, Khan A, Muneer M, Vijayalakhsmi S. Photocatalytic degradation of a widely used insecticide Thiamethoxam in aqueous suspension of TiO2: adsorption, kinetics, product analysis and toxicity assessment. Sci Total Environ 2013; 458-460:388-398. [PMID: 23685136 DOI: 10.1016/j.scitotenv.2013.04.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 03/28/2013] [Accepted: 04/13/2013] [Indexed: 06/02/2023]
Abstract
This paper deals with the study of photocatalyzed degradation of an insecticide, Thiamethoxam in aqueous suspension of TiO2. The adsorption of Thiamethoxam on TiO2 surface under dark conditions was also investigated in order to find out equilibrium adsorption constant. The degradation kinetics was studied using spectrophotometric method under various conditions such as substrate concentration, type of catalyst, catalyst dosage, pH, and in the presence of electron acceptors such as hydrogen peroxide, potassium bromate, and ammonium persulphate under continuous purging of atmospheric oxygen, and the degradation rates were found to be strongly influenced by these parameters. The results manifested that the photocatalysis of Thiamethoxam follows pseudo-first-order kinetics. The toxicity assessments of the irradiated samples were carried out using human erythrocytes as a model system under in vitro conditions. GC-MS study showed the formation of several intermediate products which were characterised based on their molecular mass and mass fragmentation pattern. A probable mechanism for the formation of various products formed during the photocatalytic process of Thiamethoxam was also proposed.
Collapse
Affiliation(s)
- Niyaz A Mir
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, UP, India
| | | | | | | |
Collapse
|