Article
Environmental Sciences
Ramesh Vinayagam, Bhawesh Singhania, Gokulakrishnan Murugesan, P. Senthil Kumar, Ruchi Bhole, Manoj Kumar Narasimhan, Thivaharan Varadavenkatesan, Raja Selvaraj
Summary: Zirconium oxide nanoparticles were successfully prepared using leaf extract, showing tetragonal structure and high crystallinity. These nanoparticles were able to efficiently degrade methylene blue dye under solar irradiation, suggesting their potential application as photocatalysts for dye degradation in wastewater.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Annu Alagarsamy, Sivasankari Chandrasekaran, Ayyar Manikandan
Summary: In this study, zirconium oxide nanoparticles were successfully prepared using the pericarp extract of Sapindus mukorossi as a capping and reducing agent, showing high adsorption efficiency and good regenerative capacity for methylene blue dye. The experimental results demonstrate that the adsorption process fits well with the non-linear Langmuir isotherm model, and pseudo-second-order kinetics is the most suitable kinetic model.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Environmental Sciences
Stefany G. de Moura, Ligiane C. L. Dauzakier, Leydiane O. Pereira, Teodorico C. Ramalho, Luiz C. A. de Oliveira, Fabiano Magalhaes
Summary: By introducing iron oxides to modify TiO2 photocatalysts, the synthesized materials with magnetic properties exhibited lower bandgap values, enabling absorption of visible light and separation from the reaction medium with the application of a magnetic field. This led to enhanced photodegradation efficiency of methylene blue and paracetamol.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Takawira J. Mumanga, Luis A. Diaz-Torres, Christian Gomez-Solis
Summary: The photocatalytic performance of neodymium doped barium aluminates in degrading methylene blue dye under solar radiation was studied, with superior degradation achieved with only 0.1 mol% Nd3+ doping. The photocatalyst with light Nd3+ doping showed a degradation rate three times faster than the undoped photocatalyst, indicating a nonlinear dependence of photoluminescence and photocatalytic activity on Nd3+ concentration.
Article
Chemistry, Physical
Mariappan Anandkumar, Ajay Lathe, Anil M. Palve, Atul Suresh Deshpande
Summary: This study demonstrated the use of noble metal-free multi-component equiatomic oxides as efficient photo-catalysts for the degradation of Cr(VI) and methylene blue dye under natural sunlight, with complete reduction of Cr(VI) and significant degradation of methylene blue. The unique composition of these oxides, containing five components in equimolar amounts, played a key role in their effective photocatalytic activity. Additionally, the role of oxygen vacancies in the photo-catalytic reduction of Cr(VI) and degradation of methylene blue was discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Biophysics
Zhiguang Yang, Xiaozhen Liu, Xueping Liu, Junfeng Wu, Xinfeng Zhu, Zhihui Bai, Zhisheng Yu
Summary: Graphene oxide and ?-cyclodextrin composite shows higher adsorption efficiency for removing organic dyes compared to graphene oxide alone.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Biochemistry & Molecular Biology
Agnieszka Sienkiewicz, Paulina Rokicka-Konieczna, Agnieszka Wanag, Ewelina Kusiak-Nejman, Antoni W. Morawski
Summary: This study presents the visible-light photocatalytic performance of 3-aminopropyltriethoxysilane (APTES)-modified TiO2 nanomaterials obtained by solvothermal modification and calcination. The APTES/TiO2 photocatalysts exhibit higher pore volume and specific surface area, and the adsorption process negatively affects the photocatalytic properties. The highest dye decomposition degree is observed for nanomaterials calcined at 900 degrees C with optimal APTES concentration of 500 mM.
Article
Chemistry, Applied
Kunqi Cai, Meixia Zheng, Hui Xu, Yujing Zhu, Longtao Zhang, Baodong Zheng
Summary: Stable gellan gum (GG)/graphene oxide (GO) aerogels with different pore structures were prepared by freeze-drying a mixture of GG and GO, showing excellent performance in methylene blue adsorption. The adsorption process was found to be spontaneous, exothermic, and entropy-increasing. GG/GO aerogels exhibited faster adsorption kinetics and higher adsorption capacity for removing MB from aqueous solutions.
CARBOHYDRATE POLYMERS
(2021)
Article
Biochemistry & Molecular Biology
Zhenyu Jing, Yanhui Li, Qiuju Du, Xinxin Pi, Yuqi Wang, Shiyong Zhao, Yonghui Jin
Summary: A kind of magnetic ferric oxide/polyvinyl alcohol/calcium alginate/UiO-67 (Fe3O4/PVA/CA/UiO-67) nanospheres with homogeneous surface interconnecting structures were successfully prepared in this study. The properties and adsorption capability of the magnetic nanospheres for methylene blue (MB) were investigated. The results showed that the optimum adsorption temperature and pH for MB by the magnetic nanospheres were 298 K and 10, respectively, with a maximum removal of 1371.8 mg/g. The adsorption process followed a pseudo-first-order kinetic model and was confirmed to be exothermic and spontaneous. The interaction mechanism between MB and the magnetic nanospheres was determined to involve hydrogen bond, pi-pi bond, electrostatic interaction, and mesoporous pore flow.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
H. Kivrak, D. Saleh, D. Alpaslan, A. Caglar, K. Selcuk, T. E. Dudu, N. Aktas
Summary: The preparation of titanium dioxide supported cadmium catalysts at different cadmium loadings altered the surface electronic properties and crystal structure, leading to enhanced photocatalytic degradation of methylene blue.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Abhishek Bhapkar, Rishi Prasad, Dipika Jaspal, Mandar Shirolkar, Kh. Gheisari, Shekhar Bhame
Summary: Zinc oxide nanoparticles were successfully synthesized using glycine nitrate solution combustion synthesis. The synthesized nanoparticles exhibited a pure hexagonal wurtzite-like structure of ZnO. They showed effective visible light catalytic activity in the degradation of methylene blue dye, degrading 98% of the dye in 120 minutes with 0.1 g/L of catalyst loading. Photoluminescence studies suggested that the enhanced photocatalytic activity may be attributed to the presence of singly ionized oxygen vacancy or intrinsic defects.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuting Sun, Ri Xia, Jie Zhang, Jiasheng Xu
Summary: The ferric oxide prepared by co-precipitation method shows excellent electrocatalytic activity and stability in the degradation of methylene blue in wastewater. The material possesses a large specific surface area for efficient ion transfer, and NaCl solution is the optimal electrolyte. The results suggest that the as-prepared ferric oxide can be a promising electrode material for electrocatalytic degradation of dyes in wastewater.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
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
Ehsan Ullah Mughal, Ayesha Javaid, Muhammad Imran, Mohammed A. S. Abourehab, Eslam B. Elkaeed, Nafeesa Naeem, Abdullah Yahya Abdullah Alzahrani, Amina Sadiq, Syeda Fariha Kainat
Summary: In this study, a series of terpyridine-based ligands with various substitutions were designed and synthesized. These ligands were coordinated with different transition metal cations to form coordination compounds. The photocatalytic potential of these compounds for the degradation of methylene blue was evaluated, and the zinc complexes showed the highest potential. The results demonstrated the excellent photocatalytic properties of these complexes, and their reusability.
INORGANICA CHIMICA ACTA
(2023)
Article
Biochemistry & Molecular Biology
Mohamed Morsy, Ahmed I. I. Abdel-Salam, Islam Gomaa, Hesham Moustafa, Haitham Kalil, Ahmed Helal
Summary: The demand for reactive dyes has increased rapidly, resulting in the contamination of soil and water streams by dye-containing effluent waste. In response, researchers have focused on using functionalized nanomaterials to remove these harmful dyes. A 3D polyurethane foam loaded with reduced graphene oxide (rGO) and ZnO nanocomposite has been proposed as an efficient structural design for dye degradation under visible light. The synthesized structure exhibited an exceptional adsorption capacity for the degradation of Methylene blue (MB) dye, with complete degradation observed within 3 hours.
Article
Energy & Fuels
Kamran Zeb, Muhammad Saqib Nazir, Iftikhar Ahmad, Waqar Uddin, Hee-Je Kim
Summary: This paper presents successful control of DC-link voltage, active power, and reactive power in a transformerless grid-connected inverter using Adaptive-PI and Adaptive-Sliding Mode Controller. The system also utilizes a PR controller based on RHC and a SOGI-based PLL for improved performance.
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, Physical
G. S. Lekshmi, R. Tamilselvi, R. Geethalakshmi, S. D. Kirupha, O. Bazaka, I. Levchenko, K. Bazaka, M. Mandhakini
Summary: The environmentally friendly and low-cost reduced graphene oxide-silver-silver oxide nanocomposite, synthesized from non-toxic foodstuff via a simple technology, exhibits strong photocatalytic, antioxidant, and antibacterial activity for environmental remediation. The materials were characterized using various spectroscopic techniques and showed improved properties compared to pristine reduced graphene oxide.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
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
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
Energy & Fuels
Samayanan Selvam, Jin-Heong Yim
Summary: The study focused on bio-materials composite mediated supercapacitor integrated vanillin and caffeine sensor system, achieved through functionalizing isolated chitins with Tungsten disulfide/Polypyrrole (WS2/PPy) composite. The system demonstrated high specific capacitance and sensitivity for both vanillin and caffeine, with good capacitance retention of 90% up to 100,000 cycles.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Yeon Jae Kim, Samayanan Selvam, Jin-Heong Yim
Summary: In this study, a flexible electrode was prepared by manufacturing a thermoplastic polyurethane scaffold with specially designed macropores and using a 3D printer. The results showed that the higher the porosity, the better the performance of the electrode, and the effect of pore structure was not significant.
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
Samayanan Selvam, Young-Kwon Park, Jin-Heong Yim
Summary: This research presents sweat-based dual electrolyte functioning supercapacitors with ionic liquid electrolyte, which can self-charge through sweat electrolyte function. These supercapacitors demonstrate excellent energy harvest/storage performance and show promise as stable power sources for next-generation wearable smart electronics.
Article
Energy & Fuels
Daedong Park, Young-Kwon Park, Samayanan Selvam, Jin-Heong Yim
Summary: This study demonstrates a supercapacitor-integrated strain sensor system using three types of iron(III)-alkylbenzenesulfonate-based oxidizing agents. The SEBS-rGO-PPy composite films were surface-treated with these oxidizing agents. The A2 iron(III)-(4-ethylbenzenesulfonic acid surface-treated SEBS-rGO-PPy films showed better performance in terms of strain sensor integrate energy storage concerts compared to the other two oxidants. The systems also exhibited good capacity retention of around 95% over 5000 charge-discharge cycles. The biocompatibility studies showed positive results for the three composites. The flexible supercapacitor combined with the sensor system has potential for use in energy storage systems for smart electronic wearable skin-based devices.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Daedong Park, Samayanan Selvam, Jin-Heong Yim
Summary: A hybrid system consisting of a skin-conformal wearable supercapacitor and a strain sensor has been developed, demonstrating good performance as a supercapacitor and sensor, as well as excellent biocompatibility, making it suitable for skin-wearable smart electronic devices.
NEW JOURNAL OF CHEMISTRY
(2022)
