Article
Materials Science, Ceramics
Urooj Shuaib, Dongseong Lee, Tousif Hussain, Riaz Ahmad, Jaeseok Hwang, M. Imranullah, Farrukh Ehtesham Mubarik, Sajjad Ahmed, Dae Joon Kang, Imran Shakir
Summary: NiO2-CuHCF nanocomposites were synthesized and their photocatalytic performance for degrading toxic dyes under natural sunlight irradiation was investigated. The results showed that the nanocomposites exhibited excellent degradation efficiency, stability, and reusability.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Ceramics
Saravanan Selvaraj, D. Simon Patrick, Govind A. Vangari, M. Krishna Mohan, S. Ponnusamy, C. Muthamizchelvan
Summary: Rare earth (RE) metal doping into metal oxide semiconductor (MOS) can enhance photocatalytic performance. In this study, samarium-doped zinc oxide (ZnO) nanoflowers were successfully synthesized and characterized. The Sm-doped ZnO nanoflowers exhibited high degradation efficiency for methylene blue under sunlight irradiation.
CERAMICS INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Sudipta Mondal, Sikder Ashikuzzaman Ayon, Md Saiful Islam, Md Shahjalal Rana, Md Muktadir Billah
Summary: Pristine and nitrogen-doped zinc oxide nanoparticles were successfully synthesized using a chemical approach. Characterization analysis confirmed the formation of pure crystalline zinc oxide with nitrogen doping, and the nanoparticles exhibited a rod-shaped morphology. Optical and photocatalytic properties showed that the nanoparticles with 1 mol.% nitrogen doping had the smallest electron-hole recombination rate and the highest photocatalytic activity.
Article
Chemistry, Multidisciplinary
Erwin Lam, Erwin Reisner
Summary: By immobilizing a phosphonated cobalt bis(terpyridine) catalyst on TiO2 nanoparticles, a photocatalyst was created that can reduce CO2 to syngas while oxidizing biomass to formate. This hybrid photocatalyst, composed of earth-abundant components, shows efficient cellulose-to-formate conversion yield and can be reused multiple times in aqueous solution. The concept of valorizing two waste streams (CO2 and biomass) into value-added chemicals through solar-driven catalysis is successfully demonstrated.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Xiaoli Song, Yaming Pang, Yuanyuan Yuan, Yuxiu Fu, Liguo Gao, Xiangrong Ma
Summary: In this study, nickel-iron hydrotalcite materials and nickel aluminum hydrotalcite materials were prepared using a homogeneous precipitation method assisted by complexing agents. The results showed that the photocatalytic activity of nickel-iron hydrotalcite materials was better than that of nickel aluminum hydrotalcite materials, and the band gap of nickel-iron hydrotalcite materials was narrower. Theoretical calculations revealed the reasons for the lower band gap of nickel-iron hydrotalcite materials. These materials are ideal photocatalysts for the degradation of methyl orange in dye wastewater and can be used as excellent wastewater treatment agents.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Arshdeep Singh, Sandeep Kumar
Summary: Zr co-doping in TiO2:Ag nanoparticles was found to improve the photocatalytic activity of the TiO2:Ag photocatalysts. The influence of Zr co-dopant on the structural, optical, and photocatalytic properties of the nanoparticles was investigated. The co-doping of Zr resulted in the broadening of the bandgap and a shift in photoluminescence, leading to enhanced photocatalytic efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Inorganic & Nuclear
D. Chaibeddra, M. Benamira, M. Colmont, H. Boulehbal, H. Lahmar, I. Avramova, M. Trari
Summary: The aim of this study was to investigate the potential of CoCr2O4 synthesized by co-precipitation method to degrade the hazardous dye Congo red (CR) under solar light irradiation. The synthesized spinel was characterized by various techniques. The experimental results showed that n-CoCr2O4 nanoparticles facilitated the separation of photogenerated electrons/holes (e-/h+) pairs by decreasing the recombination process, leading to an overall efficiency of 94% in oxidizing CR molecules after 180 min with a low catalyst dose.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Hanen Letifi, Donia Dridi, Yousra Litaiem, Salah Ammar, Wissem Dimassi, Radhouane Chtourou
Summary: Highly efficient titanium doped tin dioxide photocatalysts were successfully prepared via a co-precipitation method, with 4% Ti-SnO2 demonstrating the highest photocatalytic activity. This enhancement in photocatalytic performance was attributed to the improved absorption capability and efficient separation of photogenerated electron-hole pairs.
Article
Geosciences, Multidisciplinary
Nidhi Nishant, Steven C. Sherwood
Summary: The study found that the uncertainty of both mean and extreme precipitation in Australia's models is closely related in both present-day climate and future changes. There are strong correlations between the changes in mean and extreme precipitation on a continental scale. Regional climate models are more predictable in coastal areas compared to global climate models, except for eastern coastal regions.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Ling Li, Jiabin Zhou, Dan Liu, Xianjie Liu, Yixi Sun, Shuang Xiao
Summary: CeMn1-xMxO3 (M = Cu, Fe and Co) perovskites were synthesized and used as efficient heterogeneous catalyst for degrade of tetracycline chloride (TC-HCl) via photocatalysis coupled peroxymonosulfate (PMS) oxidation under visible-light illumination. Metal doping significantly improved the catalytic activity of perovskites. The CeMn0.6Co0.4O3/PMS/Vis system demonstrated excellent performance with a high degradation rate and stability, suggesting its potential application in the removal of organic pollutants.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Physical
Yuxing Shi, Lingling Li, Zheng Xu, Xiuling Qin, Yi Cai, Wenlei Zhang, Weilong Shi, Xin Du, Feng Guo
Summary: Building internal electric field by coupling semiconductor with metal co-catalyst effectively promotes photocatalytic water splitting into hydrogen. Co@C/ZIS photocatalyst synthesized via a facile electrostatic self-assembly strategy exhibits outstanding hydrogen production under solar irradiation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jinghang Xu, Lele Wang, Lijuan Sun, Weikang Wang, Tingting Kong, Haopeng Jiang, Qinqin Liu
Summary: Photocatalysis allows for simultaneous production of H2 and organic synthesis at normal temperature and pressure. This study focuses on using alcohols as reaction substrates to produce H2 and valuable organics through a redox cycle. The researchers successfully prepared CoCuP quantum dots and coupled them with ZnIn2S4 nanosheets to create a p-n nanojunction. This composite showed high activity in dehydrogenation reactions and provided a strategy for simultaneous production of H2 and ketones (or aldehydes).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
D. Delgado-Diaz, A. Hernandez-Ramirez, J. L. Guzman-Mar, M. Villanueva-Rodriguez, L. Maya-Trevino, L. Hinojosa-Reyes
Summary: The N-S co-doped TiO2 photocatalyst was successfully prepared and showed enhanced photocatalytic activity compared to commercial TiO2 P25 under UV and visible light. It exhibited high removal efficiency of organic arsenic compounds and reduced effluent toxicity, demonstrating great potential for water treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jiabin Cui, Somnath Koley, Yossef E. Panfil, Adar Levi, Nir Waiskopf, Sergei Remennik, Meirav Oded, Uri Banin
Summary: By synthesizing the smallest bow-tie nanoantenna and verifying its functionality using single-particle spectroscopy, as well as the formation of an electric-field hotspot at the structure center as predicted by theory, this structure can enhance emission polarization and serve as a photochemical reaction center.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Chemical
Li-Heng Kao, Kao-Shu Chuang, Hepsiba Niruba Catherine, Jui-Hsiung Huang, Hsiang-Jhih Hsu, Yu -Chin Shen, Chechia Hu
Summary: In this study, MoS2-coupled coniferous T-shaped ZnO photocatalyst was prepared and its improved photocatalytic activity for dye removal was demonstrated. The heterojunction formation between MoS2 and ZnO facilitated electron transfer, leading to enhanced photocatalytic performance. The MoS2@T-ZnO sample could be recycled for at least 5 times, indicating the potential application of MoS2 coupling in improving ZnO photocatalysis.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Review
Chemistry, Multidisciplinary
Anuradha Sharma, Jitender Jindal, Anuj Mittal, Kavitha Kumari, Sanjeev Maken, Naveen Kumar
Summary: Environmental pollution is a serious issue, particularly due to fossil fuel pollution increasing atmospheric CO2 levels. The use of carbon capture and storage technologies, as well as adsorption techniques with carbon materials, show promise for addressing this issue. Factors such as micropore volume, surface area, and introduction of basic functional groups play crucial roles in CO2 adsorption.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Shankar Sharma, Naveen Kumar, Bernabe Mari, Nar Singh Chauhan, Anuj Mittal, Sanjeev Maken, Kavitha Kumari
Summary: In this study, a series of TiO2/Bi2O3 and TiO2/Bi2O3/CuO composites were synthesized using the facile solution combustion approach, showing good optical characteristics and high photocatalytic efficiency for organic pollutant removal. The ternary composite with 10% Bi2O3 and 10% CuO exhibited the best photocatalytic performance, possibly due to the formation of heterojunctions and improved optical characteristics towards the visible region. The synthesized samples demonstrated fast removal of pollutants under visible LEDs, which is beneficial for cost-effective water purification techniques.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Vijaya Kumari, Shankar Sharma, Anuradha Sharma, Kavitha Kumari, Naveen Kumar
Summary: The study investigated the impact of synthesis conditions on the characteristics of hybridized ZnO nanocomposites and the photodegradation kinetics of Triclopyr using hydrothermally synthesized ZnO/CuO materials. It was found that synthesis conditions greatly influence the morphology, particle size, and crystal growth of nanomaterials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Suprabha Yadav, Naveen Kumar, Bernabe Mari, Anuj Mittal, Vijaya Jangra, Anuradha Sharma, Kavitha Kumari
Summary: In this work, silver-modified ZnO nanomaterials were synthesized by an energy-efficient solution combustion route, with the sample containing 7% silver showing the highest catalytic activity for Cibacron Red and Triclopyr pollutants under UV illumination. The samples exhibited superior activity in a neutral medium compared to acidic and basic mediums. The materials synthesized are highly beneficial for the energy-efficient removal of pollutants from the environment.
APPLIED NANOSCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Suprabha Yadav, Jitender Jindal, Anuj Mittal, Shankar Sharma, Kavitha Kumari, Naveen Kumar
Summary: In this study, photoactive Li doped ZnO nano-materials were successfully synthesized using a low-temperature solution combustion approach, with the introduction of lithium improving the photocatalytic characteristics of ZnO. The results demonstrate that ZnO nanomaterials doped with 5 mol% Li exhibited the highest photocatalytic activity for the degradation of organic dye and pesticide pollutants. The enhancement in charge transferability and alteration in optical and surface properties due to lithium doping contributed to the superior photocatalytic performance of Li doped ZnO.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Nanoscience & Nanotechnology
Anuradha Sharma, Anuj Mittal, Shankar Sharma, Kavitha Kumari, Sanjeev Maken, Naveen Kumar
Summary: The study showed that the modification with Cu2+ ions significantly enhanced the photocatalytic activity of α-beta Bi2O3, leading to complete degradation of pollutants in a short period of time. The sample with 2 mol% Cu in Bi2O3 lattice exhibited the highest activity, attributed to the effective separation of charge carriers due to Cu2+ doping and formation of alpha-beta phase heterojunctions.
APPLIED NANOSCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Shankar Sharma, Anuj Mittal, Nar Singh Chauhan, Sangeeta Saini, Jyoti Yadav, Manoj Kushwaha, Rahul Chakraborty, Shantanu Sengupta, Kavitha Kumari, Naveen Kumar
Summary: An energy efficient hydrothermal route was used to synthesize binary TiO2/Bi2O3, followed by a chemical method to prepare novel ternary TiO2/Bi2O3/Pd nanocomposites. The resulting composites showed improved characteristics and high activity towards the degradation of RhB under visible LED irradiation, even after cyclic experiments. Scavenger studies revealed the active species responsible for RhB removal, making the synthesized composites promising for low power consuming photoreactors in water purification systems.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Anuradha Sharma, Naveen Kumar, Mika Sillanpaa, Peter R. Makgwane, Suresh Kumar, Kavitha Kumari
Summary: Deterioration of water quality is a global threat, with industrial development regularly adding a large amount of organic and inorganic contaminants to water. Therefore, removing these contaminants is crucial for the health of biotic components. Carbon nanomaterials have been widely adopted as adsorbents due to their outstanding surface characteristics.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Anuradha Sharma, Shankar Sharma, Peter R. Makgwane, Vijaya Kumari, Vijaya Kumari, Jyoti Kataria, Naveen Kumar
Summary: A novel Ag@AgCl decorated Cu2+-Bi2O3 nanocomposite was successfully constructed and thoroughly characterized. The nanocomposite exhibited superior photocatalytic performance with a removal rate of 99.60% for RhB dye.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Environmental Sciences
Anuradha Sharma, Shankar Sharma, Naveen Kumar, W. A. Diery, Elie A. Moujaes, Muhammad Tahir, Pardeep Singh
Summary: This study focuses on the fabrication of metal ion-doped Bi2O3 photocatalysts and their application in the decontamination of Rhodamine B and Triclopyr. The synthesized materials were characterized using various techniques, and adsorption aspects of the pollutants were studied. The modification with metal ions significantly improved the removal efficiency of the photocatalyst, and Co+2/Bi2O3 showed the highest degradation efficiency. The mechanism of charge transfer and degradation of the pollutants was also presented.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Vijaya Kumari, Anuradha Sharma, Naveen Kumar, Mika Sillanpaa, Peter R. Makgwane, Md. Ahmaruzzaman, Ahmad Hosseini-Bandegharaei, Manju Rani, P. Chinnamuthu
Summary: Industrial pollution is a significant issue in the world of continuous innovation and intensive development. Organic contaminants from textile industries cause environmental damage and sustainability issues. Heterogeneous photocatalysis using TiO2-CeO2 based nanostructure semiconductor materials has shown great potential for efficient removal of these pollutants under light irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Energy & Fuels
Abdelmoumin Yahia Zerga, Muhammad Tahir, Hajar Alias, Naveen Kumar
Summary: Two-dimensional titanium carbide MXenes have gained increasing attention in photocatalytic applications due to their prominent electrical conductivity, optical properties, and abundant surface functional groups. The unique layered microstructure characteristics of Ti3C2 provide a large surface area, interlayer spacing, and hydrophilic surface functional groups, contributing to their high photocatalytic efficiency.
Article
Environmental Sciences
Naveen Kumar, Monika Kumari, Mohammed Ismael, Muhammad Tahir, Raj Kishore Sharma, Kavitha Kumari, Janardhan Reddy Koduru, Pardeep Singh
Summary: Graphitic carbon nitride (g-C3N4)-based materials have unique properties that make them suitable for designing photocatalytic and sensing materials. In this review, the structure, properties, and synthesis strategies of g-C3N4 and its assisted materials are introduced. The use of g-C3N4 in composites with metal oxides, sulfides, noble metals, and graphene is elaborated. The application of g-C3N4 and its assisted materials in sensing toxic gases and VOCs, as well as decontaminating NOx and VOCs by photocatalysis, is summarized. Overall, this review provides valuable insights for developing practical applications of g-C3N4-based photocatalysts and sensors.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Shankar Sharma, Pinki Sharma, Anuj Mittal, Anuradha Sharma, David E. Motaung, Nar Singh Chauhan, Naveen Kumar
Summary: TiO2/Bi2O3/PANI nano-composite materials were synthesized and characterized for biological applications. The materials were found to disrupt the structure and membrane of bacteria through reactive oxygen species. They also showed potential as quorum sensing inhibitors and anti-biofilm agents. Additionally, the synthesized materials served as a biosensor for glucose detection, facilitating communication between the electrode surface and enzymes.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Thermodynamics
Deepak Parmar, Manju Rani, Naveen Kumar, Noureddine Issaoui, Omar M. M. Al-Dossary, Kavitha Kumari, Shruti Jain, Leda G. Bousiakoug
Summary: The molecular interactions of ternary mixtures of 1-propanol + 1,3-diaminopropane + methyl acetate were studied by measuring the physicochemical properties of the liquid mixtures. Various properties such as density, viscosity, speed of sound, and refractive index were measured at different temperatures and pressures. The experimental data was used to calculate excess molar volume, deviation in viscosity, excess molar isentropic compressibility, excess free volume, and other properties.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
