Article
Engineering, Electrical & Electronic
Fei Li, Qian Zhao, Rong Jia, Te Hu, Yun Lu, Liang Hao
Summary: ZnO films immobilized on SUS316L wire mesh were prepared by a low-temperature hydrothermal method, and Ag nanospheres were decorated on the films through impregnating photoreduction treatment. The characterization results showed the formation of continuous films composed of ZnO nanorods shaped as six-prism cones. Ag0 nanospheres with various dimensions were found decorating the ZnO nanorods. The Ag-ZnO heterojunction enhanced light absorption, reduced bandgap value, shifted band position, and inhibited recombination, leading to improved photocatalytic performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Xiaodong Zhu, Juan Wang, Daixiong Yang, Jiawei Liu, Lili He, Mao Tang, Wei Feng, Xiaoqiang Wu
Summary: The study showed that Ag modification had negligible impact on the crystal structure and surface properties of ZnO, but effectively suppressed the recombination of photogenerated electrons and holes. Ag-ZnO photocatalysts exhibited significantly improved photocatalytic activity compared to commercial P25, mainly due to the generation of more O-2(-) radicals at Ag-ZnO heterojunctions.
Article
Materials Science, Multidisciplinary
Mirza Nadeem Ahmad, Sohail Nadeem, Mohsin Javed, Shahid Iqbal, Sadaf ul Hassan, Mazhar Khan, Hashem O. Alsaab, Nasser S. Awwad, Hala A. Ibrahium, Ayesha Mohyuddin
Summary: Water pollution is a major concern due to industrial growth, and the use of nanocomposites for photocatalytic degradation of dyes in wastewater treatment is gaining attention. In this study, nanocomposites of polyorthoethylaniline (POEANI) with zinc oxide (ZnO) were synthesized and characterized. The results showed that the NCs had high photocatalytic capability for the degradation of dyes under sunlight.
Article
Engineering, Environmental
Paola Amato, Marica Muscetta, Virginia Venezia, Mariacristina Cocca, Gennaro Gentile, Rachele Castaldo, Raffaele Marotta, Giuseppe Vitiello
Summary: The mismanagement of plastics leads to high levels of waste and release into the environment, where they can persist for long periods of time due to low degradation rates. Photocatalytic methods, using Reactive Oxygen Species (ROS) generated by semiconductor materials, offer a promising and cost-effective solution for plastic degradation. Experimental results demonstrate the effectiveness of this eco-sustainable approach in creating hybrid photocatalysts with enhanced ROS-generating ability for improved plastic photo-oxidation in aqueous environments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Gouranga Dutta, Santosh kumar Chinnaiyan, Abimanyu Sugumaran, Damodharan Narayanasamy
Summary: This study synthesized ZnO and ZnO-Ag nanoparticles using a green method and compared their anticancer, antimicrobial, and photocatalytic activity mechanisms. The results showed that ZnO-Ag nanoparticles exhibited superior potential to ZnO nanoparticles and standard antibiotic drugs in combating various microbial strains. These nanomaterials have great potential for treating cancer, microbial infections, and water pollution.
Article
Materials Science, Multidisciplinary
Sarika Singh
Summary: Spherical-shaped ZnO nanoparticles with an average size of 10 nm were synthesized, and Ag/ZnO nanocrystals were prepared by loading metallic silver nanoparticles. The results showed that the appropriate amount of Ag loading shifted the band gap of ZnO, resulting in improved photocatalytic performance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Nasser Mohammed Hosny, Islam Gomaa, Maryam G. Elmahgary, Medhat A. Ibrahim
Summary: Carbon doped ZnO nanoparticles were synthesized and characterized in this study. The results showed that the synthesized ZnO nanoparticles had a hexagonal 2D structure with a layer thickness of 25 nm and an optical band gap of 2.9 eV. Under UV irradiation, the ZnO nanoparticles exhibited excellent photocatalytic degradation performance towards both anionic and cationic dyes.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Ilknur Korkmaz, Menekse Sakir, Gokhan Sarp, Samaa Salem, Ilker Torun, Dmitry Volodkin, Emre Yavuz, M. Serdar Onses, Erkan Yilmaz
Summary: This study presents a platform based on heterojunction membrane, utilizing photocatalysis and SERS technology for degradation and detection of organic dyes, demonstrating superior efficiency and stability.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
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
Vrushali Vinayak Kadam, Soundharya Dharshini Shanmugam, Jagadeeshbabu Ponnan Ettiyappan, Raj Mohan Balakrishnan
Summary: This study successfully degraded p-nitrophenol using biologically synthesized zinc oxide nanoparticles as a photocatalyst. Optimum conditions for the degradation were found to be a ZnO photocatalyst concentration of 0.1 g/L, pH 11, and H2O2 concentration of 5 mM.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Yongchen Wang, Hawi N. Nyiera, Ann W. Mureithi, Yonglei Sun, Tomoyasu Mani, Jing Zhao
Summary: Hybrid metal-semiconductor nanostructures, particularly Ag-CdS nanorods, have been synthesized and employed as photocatalysts for methyl orange degradation. The catalytic efficiency was found to be length-dependent, with the highest efficiency observed in nanorods of intermediate length. The study also revealed insights into the charge separation-recombination pathway in these nanorods, contributing to a better understanding of their catalytic mechanism.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Environmental Sciences
Marwa Akkari, Afrah Bardaoui, Mohamed Amine Djebbi, Abdesslem Ben Haj Amara, Radhouane Chtourou
Summary: This study focused on the development and characterization of Ag-ZnO/sepiolite photocatalysts. The results showed that the Ag-ZnO/sepiolite photocatalysts prepared by a simple hydrothermal route exhibited enhanced photocatalytic activity, with the sample doped with 5% Ag showing the best performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Crystallography
Najla Khaled Almulhem, Chawki Awada, Nisrin Mohammed Alnaim, Nada Al Taisan, Adil Ahmed Alshoaibi, Nagih M. Shaalan
Summary: This study analyzed the effect of KBrO3 on the photodegradation mechanism of Nb-TiO2 nanocomposites and found that the addition of KBrO3 significantly decreased the degradation time and improved the degradation efficiency.
Article
Biotechnology & Applied Microbiology
Rosendo Lopez Gonzalez, Orbelin de la Fuente, Ruth Lezama Garcia, Melina del Carmen Uribe Lopez, Patricia Quintana Owen, Maria Carmen Hidalgo Lopez, Mayra Angelica Alvarez Lemus
Summary: Phenol and its derivatives pose a serious environmental concern, but zinc oxide-based photocatalysts show promise in addressing this issue. ZnO nanoparticles, synthesized through precipitation and calcination methods, exhibited good photocatalytic activity under visible light. The study also found that the generation of hydroxyl radicals decreased with the reuse of ZnO, likely due to the presence of adsorbed by-products on its surface.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Junwei Cui, Dapeng Wu, Zhenyun Li, Guoan Zhao, Jinshui Wang, Le Wang, Bingxuan Niu
Summary: The Ag/ZnO hybrid cages, prepared through in situ pyrolysis with well-preserved polyhedron shape and rich mesoporous structures, exhibit enhanced photocatalytic and antibacterial performances by improving light absorption and promoting charge separation. The cages demonstrate significant degradation of various organic dyes and inhibition against bacteria, with detailed mechanism studies conducted through optical/electrochemical dynamic tests and Ag+ and Zn2+ release measurements.
CERAMICS INTERNATIONAL
(2021)
Article
Acoustics
Reshma Kaimal, Victor Vinoth, Hector Valdes, Belqasem Aljafari, Sambandam Anandan, Amol Shrikrishna Salunke, Ramalinga Viswanathan Mangalaraja
Summary: A facile electrochemical method has been developed for glutathione sensing using novel glassy carbon electrode composed of graphene quantum dots (GQDs) embedded on amine-functionalized silica nanoparticles (SiNPs). The newly developed electrode exhibits a good response to glutathione with a wide linear range and a low detection limit, and it shows highly attractive electrocatalytic activity towards glutathione detection in neutral media. This electrode also provides outstanding selectivity, reproducibility, long-term stability, and can be used in the presence of interferences typically found in real sample analysis.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Optics
M. Anand, S. Suresh, S. Anandan, G. Ahalya, S. Padmapriya, K. Rangesh
Summary: The photovoltaic performance of marine red seaweed Gracilaria corticata was examined in a dye-sensitized solar cell (DSSC) using acetone and methanol as extracting solvents. The results showed that DSSCs sensitized by acetone extract exhibited higher photovoltaic performance compared to those sensitized by methanol extract.
JOURNAL OF OPTICS-INDIA
(2023)
Article
Chemistry, Physical
Madappa C. Maridevaru, Afreen Hooriya Naceruddin, Belqasem Aljafari, Sambandam Anandan
Summary: This study presents a hydrothermal approach to produce Ce0.1La0.9MnO3 (CLMO) perovskite's structure and investigates its photocatalytic capability for the elimination of NP and BPA contaminants. The results show that CLMO can efficiently degrade NP and BPA pollutants in wastewater, with degradation rates of 92% and 94% within 120 and 240 minutes, respectively. The study suggests that CLMO is a promising catalyst for the removal of endocrine-disrupting substances in bioremediation.
Article
Chemistry, Physical
Naveena Paramasivam, Anandan Sambandam, Baskaran Natesan
Summary: The aim of this work is to improve the electrochemical performance of graphene nanosheets for its potential applications as electrode materials in supercapacitors. The study found that graphene nanosheets functionalized with lactone have a higher surface charge density and quantum capacitance, making them better candidates for battery electrodes.
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
T. C. Sabari Girisun, M. Durairaj, S. Vijaya, S. Anandan
Summary: Thin films of mixed-phase 1T and 2H MoS2 on FTO substrate were prepared using hydrothermal technique, and the morphology and bandgap of the films could be controlled by altering reaction time. The MoS2-36 electrode exhibited higher photoconversion efficiency in DSSCs compared to Pt-based DSSCs.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ragini Pirarath, Ujwala O. Bhagwat, Sivashanmugam Palani, Belqasem Aljafari, Anandan Sambandam
Summary: Nanostructured zinc orthotitanates were synthesized and their properties and photocatalytic efficacy were studied under different high temperatures.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
P. Gothwal, A. Kumar, D. Rathore, R. Mukherji, T. Vetriselvi, S. Anandan
Summary: This paper presents an experimental and theoretical analysis of optimizing PZT-based tiles for energy harvesting. The experimental analysis achieved an optimized power output of 3.626 mW per footstep (using 36 sensors, equivalent to 85 kg or 0.83 kN weight) and 0.9 mW for 30 footstep at high tapping frequency. The theoretical analysis using response surface methodology (RSM) and software (Design-Expert) obtained a power output of 6784.155 mW at 150 kg or 1.47 kN weight using 34 sensors. The results of the experiments can assist in selecting input factors for optimized power during pavement design.
Article
Materials Science, Multidisciplinary
Ahalya Gunasekaran, Andrea Sorrentino, Belqasem Aljafari, Sambandam Anandan
Summary: In this study, a polymer gel electrolyte is prepared by blending hydroxypropyl methylcellulose (HPMC) with methyl gallate (MG) encapsulated with poly(ethylene glycol) (PEG) and mixing it with a liquid electrolyte. The structural and physical properties of the prepared polymer gels are analyzed using various analytical instruments. The MG-PEG-HPMC hybrid is capable of entrapping a large amount of liquid electrolyte and is used to fabricate dye-sensitized solar cells (DSSCs). The resulting DSSCs show high ionic conductivity and good triiodide diffusion coefficient, as well as long-term stability.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Crystallography
Jayaraman Kalidass, Sambandam Anandan, Thirugnanasambandam Sivasankar
Summary: In this study, a synergetic sonoelectrochemical method was used to produce magnetite nanoparticles doped with MnO2, forming a nanoarchitectonic magnetic crystal with a mesoporous magnetite @ manganese dioxide (m-Fe3O4@MnO2) hybrid nanostructure. The hybrid nanocomposite exhibited superior stability and showed excellent performance as an anode material in Li-ion batteries, delivering high specific discharge and charge capacities, as well as excellent cyclic reversibility.
Article
Engineering, Chemical
Reshma Kaimal, Madappa C. Maridevaru, Aashutosh Dube, Jerry J. Wu, Anandan Sambandam, Muthupandian Ashokkumar
Summary: The study focuses on the development of a sensor for the detection of low levels of As(III) in water. By synthesizing borophene and modifying the glassy carbon electrode with it, high sensitivity detection of As(III) is achieved. The sensor is low-cost, highly selective, and has good repeatability, making it suitable for practical applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Dhivya Sundar, Cheng-Hua Liu, Sambandam Anandan, Jerry J. J. Wu
Summary: Carbon materials with different nanostructures and high surface area have emerging applications in electrocatalytic and photocatalytic CO2 utilization. However, the photocatalytic efficiency of pristine carbon is low, so it is usually combined with other materials to increase CO2 absorption and conversion. Carbon-based materials with transition metals and organometallic complexes are commonly used as photocatalysts for CO2 reduction.
Article
Chemistry, Inorganic & Nuclear
Prasanna Kumar Ganta, Chun-Juei Chang, Hsing-Yin Chen, Rajiv Kamaraj, Anandan Sambandam, Yi-Chun Lai, Yu-Ting Chu, Shangwu Ding, Hsuan-Ying Chen
Summary: A series of Al catalysts with N,N'-diaryloxalamidate and N,N'-diaryldithiooxalamidate ligands were synthesized and their catalytic activities in ε-caprolactone polymerization were evaluated. The Al catalyst [(PhNCS)-N-H](2)Al2Me4 showed the highest catalytic activity. Al complexes with N,N'-diaryldithiooxalamidate ligands exhibited higher catalytic activities compared to those with N,N'-diaryldioxalamidate ligands.
Article
Chemistry, Multidisciplinary
Subbiah Vijaya, Jegadesan Subbiah, David J. Jones, Sambandam Anandan
Summary: Bismuth-based perovskites are important materials in lead-free perovskite solar cells. A new strategy of ligand-assisted re-precipitation approach is used to improve crystallization and thin film quality. CsBi3I10-based perovskite solar cells show the highest power conversion efficiency of 2.3%.
Article
Materials Science, Multidisciplinary
Ragini Pirarath, Belqasem Aljafari, Jerry J. Wu, Sambandam Anandan
Summary: A hydrothermal approach was used to synthesize petal-like MoS2 nanosheets with hexamethylenetetramine as the exfoliating agent. The MoS2 nanosheets showed high adsorption capabilities for tartrazine dye and mercury ions, removing 99% of the contaminants within 5 minutes and 6 hours, respectively. The Freundlich isotherm model and pseudo-first-order and pseudo-second-order kinetic models were found to be applicable for the adsorption processes.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Ummu Habeeba Abdul Azeez, Dhanusha Ayyappan, T. Sabari Girisun Chidambaram, Ranvijay Singh, Jegadesan Subbiah, Anandan Sambandam
Summary: This study synthesized a series of Schiff-based organic molecules with a phenothiazine backbone and investigated their structural, optical, and nonlinear absorption properties. The Phe-Ma molecule exhibited the highest nonlinear absorption and the lowest optical limiting threshold, indicating its potential as a nonlinear optical limiter.
JOURNAL OF MOLECULAR STRUCTURE
(2023)