Article
Environmental Sciences
S. Suvathi, R. Rathi, K. Ravichandran, P. Kavitha, M. Ayyanar, P. K. Praseetha, N. Chidhambaram
Summary: Enzyme-coupled titanium oxide nanopowder samples were prepared using different volumes of vermiwash, and their photocatalytic efficiency against Methylene Blue dye was studied. The study showed that the enzymes in the vermiwash had an effect on the activity of titanium oxide. The treated water with activated enzymes showed enhanced seed germination.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Anuradha Sharma, Monika Kumari, Muhammad Tahir, Shruti Jain, Shankar Sharma, Naveen Kumar
Summary: Metal oxide integrated metal organic framework (MOF) composites enhance the synergistic properties of organic framework materials. Bi2O3 modified iron succinic acid organic frameworks (Bi2O3@Fe-SA) with different Fe: Bi molar ratios were synthesized. The synthesized materials were characterized for crystal structures, morphology, chemical constitution, functional groups, band energies, surface charge, surface area, and charge carriers' recombination. The materials exhibited high photocatalytic degradation efficiency for Rhodamine B (RhB) dye under visible irradiation.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Hamza Ighnih, Redouane Haounati, Rahime Eshaghi Malekshah, Hassan Ouachtak, Yahya Toubi, Fadi Alakhras, Amane Jada, Abdelaziz Ait Addi
Summary: This study synthesized a new eco-friendly photocatalyst nanocomposite, BiOBr@Kaolinite, through a simple co-precipitation method. The nanocomposite was characterized using various techniques to determine its crystal phase, functional groups, morphology, composition, chemical states, optical properties, and band gap energy. The nanocomposite exhibited efficient photodegradation of Rhodamine B dye under sunlight irradiation due to the charge transfer from kaolinite to BiOBr nanoparticles. This study provides a potential application for the degradation of toxic organic pollutants in wastewater.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Manish Kumar, Rahul Vaish, Zainab Mufarreh Elqahtani, Imen Kebaili, M. S. Al-Buriahi, Tae Hyun Sung, Wonseop Hwang, Anuruddh Kumar
Summary: This study investigates the combined effect of piezocatalytic and photocatalytic activity to achieve improved piezo-photocatalytic dye degradation efficiency under visible light. The results demonstrate that the Bi2VO5.5 powder sample exhibits high photocatalytic efficiency and good reusability.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
M. A. Bukhari, M. I. Khan, Shamsa Kanwal, Mahvish Fatima, H. Elhosiny Ali, Huda Alkhaldi, Muhammad Boota, Fatimah M. Alzahrani, Siham A. Alissa, Munawar Iqbal
Summary: A green approach was used to synthesize heterostructures of g-C3N4@MoO3 and their structural, morphological, and optical features were characterized by XRD, UV-vis, SEM, and FTIR techniques. The XRD analysis showed higher crystallinity and intensity of g-C3N4/MoO3 compared to g-C3N4 and MoO3. The g-C3N4 exhibited a crumpled layered arrangement while MoO3 had a rod-like structure. The optical properties of g-C3N4/MoO3, including refractive index, bandgap energy, and extinction coefficient, were significantly enhanced.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Rajesh Tanuj, Rajesh Kumar, Santosh Kumar, Neerja Kalra, Subhash Sharma, Amritpal Singh
Summary: In this paper, the synthesis of uniform spherical-shaped zinc oxide nanoparticles via a green method and their photocatalytic activity were reported. The nanoparticles were synthesized using Rhododendron arboreum flower extract as a reducing and capping agent. Various spectroscopic techniques like UV-Vis and FT-IR were used to characterize the synthesized nanoparticles, which showed spherical structure. Elemental composition of oxygen and zinc was confirmed by energy-dispersive spectral analysis. These green synthesized zinc oxide nanoparticles exhibited high degradation efficiency (99.18% for Malachite green dye and 99.272% for Fuchsin basic dye) and have the potential to be used as selective catalysts for the degradation of cationic dyes.
Article
Chemistry, Physical
Hao Peng, Hongyan Li, Bo Li, Yuanliang Zhou, Jing Wen, Xiaogang Zheng
Summary: CuInS2 and MgO-modified S-doped biochar (CIS-Mg/S-BC) was prepared to enhance the adsorption-photocatalytic performance of biochar for RhB removal. The efficient separation and migration of photo-induced electrons and holes at the junction interface enlarged the visible light absorption. Langmuir and second-order models were used to describe the adsorption isotherms and kinetics of S-BC-based hybrids, respectively. The results showed that 2d-CIS-Mg/S-BC had a high removal efficiency for RhB solution and potential application in industrial wastewater purification.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Thanaree Phongamwong, Noelia Barrabes, Waleeporn Donphai, Thongthai Witoon, Guenther Rupprechter, Metta Chareonpanich
Summary: Solar-driven photocatalysis is a promising approach for clean production using sunlight as an energy source. The efficiency of nanocrystalline TiO2 catalysts can be improved by functionalizing them with Au-25 clusters, Au nanoparticles, and chlorophyll. The most effective degradation of rhodamine B was achieved using a P25 catalyst functionalized with both Au-25 and chlorophyll. Various characterization techniques were used to investigate the factors influencing the photocatalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Green & Sustainable Science & Technology
J. Gaur, K. Vikrant, K. -h. Kim, S. Kumar, M. Pal, R. Badru, S. Masand, J. Momoh
Summary: Zinc oxide nanoparticles (ZnO NPs) with hexagonal wurtzite structure were prepared using Carica papaya leaf extract, and they demonstrated excellent photocatalytic activity in the degradation of Congo red dye under UV irradiation.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Environmental Sciences
Haeju Kim, Dawoon Jang, Seungjoo Choi, Jeongho Kim, Sungjin Park
Summary: The activation with nitric acid improves the photocatalytic activity of 3D melamine-derived C3N4 materials in degrading organic pollutants. NT-MCN shows better charge transfer ability compared to MCN.
Article
Environmental Sciences
R. Madhushree, U. C. Jadan Resnik Jaleel, Dephan Pinheiro, N. K. Renuka, K. R. Sunaja Devi, Juhyeon Park, Sivakumar Manickam, Myong Yong Choi
Summary: The synthesis of bilayer heterojunctions has recently gained significant attention. Fabrication of novel bilayer composites is important for improving photocatalytic efficiency. In this study, molybdenum disulfide/graphitic carbon nitride/zinc oxide ternary composites were successfully prepared and showed excellent photocatalytic performance.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Monu Verma, Meena Mitan, Hyunook Kim, Dipti Vaya
Summary: Citric acid and oleic acid modified cobalt oxide nanomaterials were successfully prepared for photocatalytic degradation of malachite green dye. The synthesized nanomaterials were characterized for their structural, morphological, optical, functional, and thermal properties, with citric acid modification showing better photocatalytic performance.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Environmental Sciences
Brijesh Pare, Veer Singh Barde, Vijendra Singh Solanki, Neha Agarwal, Virendra Kumar Yadav, M. Mujahid Alam, Amel Gacem, Taghreed Alsufyani, Nidhal Ben Khedher, Jae-Woo Park, Sungmin Park, Byong-Hun Jeon
Summary: The green synthesis of ZnO nanoparticles was successfully achieved and characterized in this study. The synthesized nanoparticles showed desirable photocatalytic activity for the remediation of malachite green from aqueous solutions under LEDs irradiation.
Article
Nanoscience & Nanotechnology
Tianshuo Sui, Jingbo Mu, Hang Yang, Hongwei Che, Zhixiao Zhang, Yanming Wang, Xiaoliang Zhang, Zengcai Guo
Summary: A novel photocatalyst Fe-g-C3N4/FePc/BiVO4 heterostructure was synthesized and characterized using various analysis techniques. The heterostructure composites showed improved efficiency and stability in the degradation of RhB due to their unique advantages of light absorption and electron-hole complexation rate. The formation of a new structure successfully adjusted the electron transfer route and improved the efficiency of photogenerated charge separation.
Article
Chemistry, Physical
Munir Ahmad, Muhammad Tauseef Qureshi, Wajid Rehman, Nouf H. Alotaibi, Anadil Gul, Reda S. Abdel Hameed, Mahmoud Al Elaimi, M. F. H. Abd El-kader, Muhammad Nawaz, Rizwan Ullah
Summary: In this study, ZnO and Ag@ZnO nanoparticles based photocatalyst were synthesized using pecan nut leaf extract for the first time, with phytochemicals acting as capping and reducing agents. The catalyst showed enhanced catalytic properties after Ag doping, with optimal performance at pH 10 and following a pseudo first order kinetic model for RhB dye degradation. The reusability test demonstrated high stability of the catalyst even after 5 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
M. Shakil, Usama Inayat, M. Tanveer, G. Nabi, S. S. A. Gillani, M. Rafique, N. H. Tariq, A. Shah, A. Mahmood
Summary: NiO and Ag-Cd co-doped NiO nanoparticles were synthesized using a sol-gel method and their photocatalytic performance in the degradation of rhodamine B dye under visible light was studied. The Cd0.15Ag0.30Ni0.55O sample showed the best photocatalytic efficiency and reaction rate.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Muhammad Sohaib, Tahir Iqbal, Sumera Afsheen, M. B. Tahir, Arslan Masood, Muhammad Rafique, K. N. Riaz, M. A. Sayed, A. F. Abd El-Rehim, Atif Mossad Ali
Summary: The structure, optical and chemical properties of pure zinc oxide nanoparticles and molybdenum-doped zinc oxide nanoparticles were studied. It was found that molybdenum doping resulted in smaller crystallite size, and the degradation efficiency was highest at a doping level of 2%.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Chemistry, Physical
Muhammad Daud Rafique, S. S. A. Gillani
Summary: This study comprehensively investigates the phase stability, electronic-band structure, and optical characteristics of BaTiO3, SrTiO3, and CaTiO3 under external pressure. The results show that the band structure and optical properties of these materials are affected by applied pressure.
MOLECULAR SIMULATION
(2023)
Article
Nanoscience & Nanotechnology
Maira Liaqat, Khalid Nadeem Riaz, Tahir Iqbal, Ghulam Nabi, Muhammad Rizwan, M. Shakil
Summary: Heterostructure BiVO4/Bi2O3 nanocomposites with enhanced visible light activity were synthesized through a hydrothermal route. The p-n heterojunction formed between the p-type Bi2O3 and n-type BiVO4 effectively reduced the recombination of photogenerated charge carriers, leading to excellent photocatalytic performance and stability.
Article
Materials Science, Ceramics
Maira Liaqat, N. R. Khalid, M. B. Tahir, Sami Znaidia, Hussein Alrobei, Meshal Alzaid
Summary: Alpha-MnO2/BiVO4 nanocomposites with different MnO2 contents (0-7 wt%) were successfully synthesized through a simple chemical method. The structure, morphology, and optical properties of the nanocomposites were studied using various analytical techniques. The photocatalytic efficiency of the nanocomposites was evaluated through the degradation of rhodamine B (RhB) and tetracycline (TC) under visible light irradiation (λ >= 420 nm). The 5% MnO2/BiVO4 (MnBV-5) photocatalyst exhibited the highest degradation efficiency and maintained good stability after five testing cycles.
CERAMICS INTERNATIONAL
(2023)
Article
Environmental Sciences
Sadia Faryad, Umair Azhar, Muhammad Bilal Tahir, Wahid Ali, Muhammad Arif, Muhammad Sagir
Summary: Green synthesis of nanoparticles using eco-friendly and biodegradable materials is an effective method to reduce the negative environmental impacts of traditional synthesis methods. In this research, Spinacia oleracea leaves were used as a boron source to produce a visible light active photo-catalyst. The photocatalytic performance of boron-doped g-C3N4/TiO2 nanocomposites was examined for methylene blue dye degradation in water, and it was found that the composites showed better performance than other synthesized catalysts and composites. The research demonstrates that boron-doped g-C3N4/TiO2 composites can be used as an ideal solution for treating polluted water using visible light as a source to activate photocatalysts.
Article
Chemistry, Physical
Muhammad Isa Khan, Muhammad Hassan, Abdul Majid, Muhammad Shakil, Muhammad Rafique
Summary: In this study, first-principles calculations were used to investigate the adsorption behavior of toxic gases on Fe-decorated Sb monolayer. The adsorption of CO, COS, NO, NO2 gases on Fe-decorated Sb showed chemisorption behavior, while NH3 and SO2 showed physisorption. The decoration of Fe on Sb changed its semiconducting behavior to metallic, leading to improved electronic properties. The results of this study provide valuable insights into the potential use of Fe-decorated Sb as a reversible sensor for toxic gases.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Tausif Ahmad, Jibran Iqbal, Mohamad Azmi Bustam, Muhammad Babar, Muhammad Bilal Tahir, Muhammad Sagir, Muhammad Irfan, Hafiz Muhammad Anwaar Asghar, Afaq Hassan, Asim Riaz, Lai Fatt Chuah, Awais Bokhari, Muhammad Mubashir, Pau Loke Show
Summary: The critical challenge faced by our modern society is how to reduce the effects of climate change and global warming caused by CO2 emissions. This study investigates the adsorption potential of surface functionalized cerium oxide nanoparticles (CeNPs) for CO2 separation using deep eutectic solvents (DESs). The DESs were prepared using phosphonium-based compounds and were characterized before being used to functionalize the CeNPs. It was found that DES6-coated CeNPs showed higher adsorption performance for CO2 capture compared to DES3-coated CeNPs. This is likely due to the enhanced surface affinity between DES6-coated CeNPs and CO2 molecules, resulting in better mass transport characteristics and higher CO2 adsorption performance. These findings open up new research possibilities for reducing environmental effects of CO2 emissions through the use of DES surface-coated CeNPs.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Hina Arif, Muhammad Bilal Tahir, Badriah S. Almutairi, Iqra Khalid, M. Sagir, H. Elhosiny Ali, Hussein Alrobei, Meshal Alzaid
Summary: In this study, density functional theory (DFT) based CASTEP first principles calculations were used to investigate the properties of CsSiBr3 perovskite for solar cell and photovoltaic applications. The optical, structural, and electronic properties of CsSiBr3 perovskite compound were discussed and examined using GGA-PBE calculations. The influence of lattice constant on the band gap values was also analyzed, and results showed that CsSiBr3 has a promising band gap value of 0.996 eV with an optimized lattice constant of 5.057 A.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Sajjad Ahmad Khan, Soumaya Gouadria, H. A. Alburaih, Asghar Nazir, Naseeb Ahmad, Muhammad Bilal Tahir, Salma Aman
Summary: The MnSe/FeSe2 nanocomposite, consisting of MnSe and FeSe2, was prepared by hydrothermal synthesis. The FeSe2 significantly affected the electrocatalytic oxidation, with an equal molar ratio of Mn and Fe during synthesis. The nanocomposite showed an onset potential of 1.511 V versus RHE and a Tafel slope of 43.90 mV dec(-1), making it suitable for electrochemical oxygen evolution reaction (OER). It outperformed the commercially available RuO2 catalyst and demonstrated efficient interaction between ferrous and manganese in OER electrocatalysis without the addition of metal ions to the MnSe crystalline structure. Hence, this composite catalyst holds promise for future electrochemical applications.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Polymer Science
Muhammad Yousaf, Tahir Iqbal, Sumera Afsheen, Khalid Nadeem Riaz, Nabil Al-Zaqri, Ismail Warad, Hamad Ahmed, Muhammad Asghar, Muhammad Shafiq
Summary: In this study, a titanium nitride-based coating was successfully deposited on the surface of nickel-titanium alloy using a cathodic cage plasma processing technique. The effect of treatment time on microstructure, chemical composition, surface morphology, and tribological behavior was investigated. The results showed that the coating with a 4-hour treatment time exhibited novel biocompatibility and tribological properties.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Muhammad Usman, Jalil Ur Rehman, M. Bilal Tahir, Abid Hussain, Hussein Alrobei, Meshal Alzaid, A. Dahshan
Summary: The present study uses first-principles calculations to investigate the structural, electronic, optical, and mechanical properties of bismuth-based novel fluoroperovskites TBiF3 (T = Hg, Xe). The thermodynamic stability of cubic fluoroperovskites is determined using the enthalpy of formation and the phonon spectra. The lattice parameters of HgBiF3 and XeBiF3 are found to be 4.78 and 4.82 angstrom, respectively. Both compounds exhibit semiconducting behavior with a direct band gap, as explained by the density of states. HgBiF3 has a band gap of 2.65 eV, while XeBiF3 has a band gap of 3.12 eV. The mechanical properties indicate that both materials are mechanically stable, incompressible, and hard. According to Pugh's ratio and Cauchy pressure, HgBiF3 is brittle, while XeBiF3 is ductile. The combined study of these properties suggests that HgBiF3 is a preferable dielectric material for optoelectronic applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Muhammad Khalid Hussain, N. R. Khalid, M. B. Tahir, Muhammad Tanveer, Tahir Iqbal, Maira Liaqat
Summary: A novel ternary ZnO/CuO/MoO3 (ZnO/CuO/M) heterojunction photocatalyst with nanorods morphology was synthesized by hydrothermal treatment. The photocatalytic activity of the ZnO/CuO/M nanorods was significantly improved compared to pristine ZnO, CuO, MoO3, and the binary CuO/M composite. The improved performance can be attributed to the efficient transfer and separation of photoexcited charge carriers in the ZnO/CuO/M heterojunction.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Review
Chemistry, Multidisciplinary
Muhammad Rafique, Syeda Hajra, Muneeb Irshad, Muhammad Usman, Muhammad Imran, Mohammad A. Assiri, Waqar Muhammad Ashraf
Summary: This study discusses the pros and cons of using TiO2- and titanate-based photocatalysts for hydrogen energy production, elucidates the mechanism of photocatalysis for better performance, and assesses the chief characteristics and limitations of TiO2 photocatalysts. Additionally, it reviews TiO2-based photocatalysts modified with various materials such as transition metals, transition metal oxides, noble metals, graphitic carbon nitrides, and graphene. This study provides beginners with a basic understanding while offering detailed knowledge to experts for optimizing TiO2-based photocatalysts for hydrogen production.
