Article
Physics, Multidisciplinary
Hassan A. H. Alzahrani, Yaaser Q. Almulaiky, Abdulmohsen O. Alsaiari
Summary: This article focuses on the photocatalytic degradation of methylene blue (MB) using ZnO photocatalysts nanoparticles under UV light irradiation. The results show that the ZnO nanoparticles effectively degrade the MB dye with a crystallite size of 24.71 nm and a nanospeck dimension of 32 nm. The ZnO photocatalyst exhibits a low overpotential for HER and a Volmer-Tafel mechanistic pathway for the HER process. Chronopotentiometry experiments also demonstrate the ZnO nanoparticles' capability to produce hydrogen.
Article
Engineering, Environmental
Periyakaruppan Karuppasamy, Nagoorkani Ramzan Nilofar Nisha, Arivalagan Pugazhendhi, Sabariswaran Kandasamy, Sakthivel Pitchaimuthu
Summary: The study focused on preparing semiconducting materials like TiO2 and transition metal-doped TiO2 using a sol-gel method and characterizing them through various analyses. Among them, Zn-doped TiO2 showed the best photocatalytic efficiency in decolouring Methylene blue dye under visible light irradiation. Results indicated that Zn-doped TiO2 had a lower band gap, leading to enhanced dye degradation compared to other catalysts. UV-vis spectra and the decolouration percentage of Methylene blue showed the superior photocatalytic activity of Zn-doped TiO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Shubhangi N. Kotkar, Subedar Prasad, Gunwant P. Gadekar, Suresh B. Rewatkar
Summary: Natural sunlight active zinc oxide nanoparticles were synthesized using a simple solution auto combustion method. The structural and optical characteristics of the nanoparticles were studied, and it was found that they exhibited excellent photodegradation activity and antimicrobial properties.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Duygu Akyuz
Summary: Metal oxides are commonly used catalysts for removing dyes and toxins. The synthesized catalyst showed excellent degradation rate and efficiency, as well as high photocurrent density, stability, and recyclability under UV light irradiation.
Article
Materials Science, Multidisciplinary
Elaiyappillai Elanthamilan, I. Betsy Elizabeth, Sea-Fue Wang, I. Sharmila Lydia
Summary: In this study, M-type magnetic strontium hexaferrite microspheres were prepared and used as a magnetic photocatalyst for the degradation of methylene blue dye. The prepared SrFe12O19 photocatalyst showed a degradation efficiency of 90.2% towards the MB dye. Furthermore, the as-synthesized photocatalyst exhibited superior recycling ability without any phase changes up to three cycles. These findings suggest that SrFe12O19 microspheres could be a potential photocatalyst for the degradation of MB dye in industrial wastewater treatment processes.
Article
Engineering, Environmental
Mahboubeh Rabbani, Javad Shokrayian, Rahmatollah Rahimi, Rezvaneh Amrollahi
Summary: Zinc oxide and doped zinc oxide nanorods were successfully synthesized using a simple template-free precipitation technique, with meso-tetrakis (4-sulfonatophenyl) porphyrin immobilized on the zinc oxide nanorods. The photocatalytic activity of TPPS/ZnO was found to be higher than that of pure zinc oxide and doped zinc oxide under visible light irradiation, as revealed by various characterization techniques and degradation studies of methylene blue.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xin Zhao, Ching-Shan Wang, Ni-Ni Chou, Fang-Hsing Wang, Cheng-Fu Yang
Summary: A novel method was proposed to fabricate a ZnO seed layer with a protrusion and matrix structure, and then ZnO nanorods could be synthesized on it using the hydrothermal method to form ZnO nanoflower arrays (NFAs) easily. The effect of ZnO NFAs on methylene blue degradation was enhanced with increasing synthesis time, as shown by XRD, SEM, and FIB analyses.
Review
Engineering, Environmental
Alam S. M. Nur, Marzia Sultana, Atol Mondal, Sumon Islam, Fataha Nur Robel, Aminul Islam, Mst Sumaia Aktar Sumi
Summary: Dye-contaminated water poses a global problem due to its negative impact on human health and the aquatic environment. Photocatalysis using TiO2 as the prime choice catalyst shows promise for dye pollution remediation, but its low quantum efficiency under solar radiation limits commercialization. Research has focused on increasing TiO2's efficiency through doping and morphological modifications to enhance dye degradation under UV-Vis irradiation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Devaraj Bharathi, Jaya Ganesh Thiruvengadam Nandagopal, Ranjithkumar Rajamani, Soumya Pandit, Deepak Kumar, Bhasker Pant, Sadanand Pandey, Piyush Kumar Gupta
Summary: In this study, zinc oxide nanorods were synthesized using leaf extract of Solanum trilobactum plant. The physicochemical properties of the nanorods were characterized and their photocatalytic property against methylene blue dye was investigated under sunlight irradiation. The nanorods showed high dye degradation efficiency and stability, making them suitable for reuse.
Article
Multidisciplinary Sciences
Fatemeh Jahani, Basir Maleki, Mohsen Mansouri, Zahra Noorimotlagh, Seyyed Abbas Mirzaee
Summary: This research investigates the photocatalytic removal of reactive blue 19 (RB19) dye using zinc oxide/cerium (ZnO@Ce) nanoparticles decorated with biochar under LED irradiation. The results demonstrate that the biochar-decorated ZnO@Ce nanoparticles can effectively remove RB19 dye under optimal conditions.
SCIENTIFIC REPORTS
(2023)
Article
Biochemistry & Molecular Biology
Muthukumar Krishnan, Harinee Subramanian, Sathish Kumar Ramachandran, Arulmozhi Muthukumarasamy, Dineshram Ramadoss, Ashok Mahalingam, Arthur James Rathinam, Hans-Uwe Dahms, Jiang-Shiou Hwang
Summary: Multidrug-resistant strains (MDRs) are a major concern in various settings and the synthesized nanocomposites (NCs) showed potential as an alternative antibacterial agent. The study characterized the prepared catalysts and identified MDRs belonging to different strains. The NCs exhibited effective growth inhibition against MDRs and encouraged the development of flower-like NCs-4 for photocatalytic antibacterial technique.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Environmental
Jyotsna S. Bajpai, Divya P. Barai, Bharat A. Bhanvase, Vijay B. Pawade
Summary: This study synthesized Sm-doped GO/KSrPO4 nanocomposite using ultrasound-assisted method and investigated its photocatalytic activity for methylene blue dye degradation. Higher concentrations of Sm3+, loading of photocatalyst, lower initial dye concentration, and higher pH resulted in better performance, with a maximum dye removal of 83.35% achieved. The rate constant for MB dye degradation using the nanocomposite photocatalyst was found to be 0.0053 min(-1).
WATER ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Multidisciplinary
Abdulrahman A. Almehizia, Mohamed A. Al-Omar, Ahmed M. Naglah, Mashooq A. Bhat, Nasser S. Al-Shakliah
Summary: This paper explores the combustion synthesis of ZnO nanoparticles using organic fuels, showcasing their characterization and testing for photocatalytic degradation and antibacterial activity. The results demonstrate promising applications in water treatment and bacterial control.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Biotechnology & Applied Microbiology
Mariem Naffeti, Mohamed Ali Zaibi, Chayma Nefzi, Alejandro Vidal Garcia-Arias, Radhouane Chtourou, Pablo Aitor Postigo
Summary: The present study fabricates an eco-friendly and cost-effective bismuth modified silicon nanowires (Bi@SiNWs)-based photocatalyst for efficient degradation of methylene blue (MB) dye under UV and solar irradiation. Bi@SiNWs exhibit remarkable photocatalytic ability with degradation rates of 44% and 89% under UV and solar irradiation, respectively, within 120 min. The composite photocatalyst also shows strong reusability and photo-stability. The study provides insights into the mechanism of MB degradation over Bi@SiNWs and validates their potential role in environmental remediation.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Chemistry, Physical
Adeyinka S. Yusuff, Kudirat A. Thompson-Yusuff, Olalekan D. Adeniyi, Moses A. Olutoye
Summary: In this study, immobilized TiO2 on termite hill (TiO2/TH) and ZnO-promoted TiO2/TH (ZnO-TiO2/TH) were synthesized and evaluated as photocatalysts for methylene blue (MB) degradation under solar irradiation. The ZnO-TiO2/TH showed better photoactivity and stability, indicating its potential for the degradation of organic pollutants in industrial wastewater.
SURFACES AND INTERFACES
(2022)
Article
Polymer Science
Siraimeettan Kurinchyselvan, Ayyavu Chandramohan, Arumugam Hariharan, Ponnaiah Gomathipriya, Muthukaruppan Alagar
Summary: Two different benzoxazine monomers were synthesized and their molecular structures confirmed using spectroscopy tools. The thermal stability of the nanocomposites was increased by reinforcing with functionalized MCM-41 and the dielectric properties were studied, showing ultra-low dielectric constant values. These hybrid composites can be used as adhesives, sealants, and encapsulants in high-performance microelectronics applications.
Article
Biochemical Research Methods
Hemalatha Kuzhandaivel, Summaya Banu Basha, Immanuel David Charles, Nandhakumar Raju, Usha Singaravelu, Karthick Sivalingam Nallathambi
Summary: The study synthesized and characterized a thiazole based Schiff base receptor, which showed the ability to detect Al3+ ions through a turn-on process. Computational studies and bioimaging applications were performed to further investigate its electronic states and biological properties.
JOURNAL OF FLUORESCENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Sornalatha Manickam, Hemalatha Kuzhandaivel, Yogapriya Selvaraj, Manik Clinton Franklin, Karthick Sivalingam Nallathambi
Summary: NiSe and NG-NiSe were prepared as electrode materials for supercapacitors using a hydrothermal technique. NG-NiSe exhibited higher capacitance performance than pure NiSe, attributed to the synergetic effects during one-pot synthesis. Characterization techniques including XRD, FESEM, HRTEM, and XPS were employed to analyze the materials, while electrochemical behaviors were studied using CV, GCD, and EIS spectra, with promising results for NG-NiSe.
DALTON TRANSACTIONS
(2022)
Article
Polymer Science
Rajangam Vinodh, Raji Atchudan, Hee-Je Kim, Moonsuk Yi
Summary: This review presents the recent development of polysulfone-based electrolyte membranes and their composites for fuel cell applications. The influence of fillers on the performance of electrolyte membranes is discussed, along with the key issues of enhancing ionic conductivity and chemical stability. The future research directions for polymer electrolyte membranes are also briefly summarized.
Article
Computer Science, Information Systems
Gwang-Ho Lee, Do-Hyun Kim, Min-Soo Kim, Hee-Je Kim, Sung-Shin Kim
Summary: This research successfully reduced the measurement error of TRO concentration by calibrating LED modules and optimizing LED aging, resulting in a significant improvement in measurement accuracy and precision to 0.10% and 0.85%, respectively. Experimental results confirmed the improvement of non-uniform LED light, and the standard values for TRO concentration measurement were met.
Article
Computer Science, Information Systems
Do-Hyun Kim, Min-Soo Kim, Kandasamy Prabakar, Hee-Je Kim
Summary: Fast charging technology has gained attention due to the increased use of batteries in electric vehicles, light electric vehicles, and energy storage systems. However, fast charging can lead to issues such as fire, heat, and battery performance degradation. This paper proposes a real-time monitoring system to efficiently manage the charger and battery status.
Article
Chemistry, Physical
Rajangam Vinodh, Rajendran Suresh Babu, Raji Atchudan, Hee-Je Kim, Moonsuk Yi, Leandro Marques Samyn, Ana Lucia Ferreira de Barros
Summary: This study presents the synthesis of porous NiO nanoparticles through a simple hydrothermal method and demonstrates their excellent electrochemical performance. The unique morphology of NiO plays a crucial role in enabling efficient ion transport, shortening electron and ion pathways, and providing active sites for electrochemical reactions. Moreover, the assembled asymmetric supercapacitor (ASC) composed of NiO-300 and activated carbon (AC) shows outstanding supercapacitive performance.
Review
Chemistry, Multidisciplinary
Rajangam Vinodh, Rajendran Suresh Babu, Sangaraju Sambasivam, Chandu V. V. Muralee Gopi, Salem Alzahmi, Hee-Je Kim, Ana Lucia Ferreira de Barros, Ihab M. Obaidat
Summary: Supercapacitors, with their excellent capacitance and rate efficiency, extended durability, and cheap materials price, are regarded as one of the most promising energy storage devices. The choice of electrode materials is critical for the performance of supercapacitors. The combination of polyaniline (PANI) and metal-organic frameworks (MOFs) as electrode materials shows additional benefits and is predicted to be the next-generation electrode materials for efficient supercapacitors.
Article
Computer Science, Information Systems
Min-Soo Kim, Do-Hyun Kim, Hee-Je Kim, Kandasamy Prabakar
Summary: In this paper, a novel strategy for monitoring PV junction boxes based on LoRa technology is proposed. The wireless transmission of data collected from the PV junction boxes enables real-time monitoring and display of the received data on an LCD screen. The system shows stable communication reception and excellent performance in maintaining signal strength and packet error rate, even in non-line-of-sight environments.
Article
Chemistry, Multidisciplinary
Hemalatha Kuzhandaivel, Yogapriya Selvaraj, Manik Clinton Franklin, Sornalatha Manickam, Karthick Sivalingam Nallathambi
Summary: Micro-rectangular manganese-doped bismuth ferrite (Mn-doped Bi2Fe4O9) was synthesized using a cost-efficient hydrothermal technique at very low temperature. Physicochemical characterization was carried out using various techniques, showing excellent electrochemical performance of BFMO1 based on its structural, morphological, and electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Hemalatha Kuzhandaivel, Sornalatha Manickam, Suresh Kannan Balasingam, Manik Clinton Franklin, Hee-Je Kim, Karthick Sivalingam Nallathambi
Summary: Sulfur and nitrogen-doped graphene quantum dots/polyaniline (S,N-GQDP) nanocomposites were prepared using a two-step synthesis method, showing improved energy storage properties with high specific capacitance and cycling stability. The study confirmed the formation of S,N-GQDs and their interaction with PANI in the nanocomposites, validating the potential of S,N-GQDP2 composite as an efficient electroactive material for energy storage applications.
NEW JOURNAL OF CHEMISTRY
(2021)