Article
Chemistry, Physical
S. P. Vinay, Fahad A. Alharthi, Udayabhanu, Ali Alsalme, G. Nagaraju
Summary: This study reports the synthesis of a silver-reduced graphene oxide nanocomposite using chamomile tea flowers extract via eco-friendly hydrothermal treatment, which exhibited significant photocatalytic activity in degrading organic dyes.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Multidisciplinary Sciences
Rizwan Wahab, Farheen Khan, Javed Ahmad, Abdulaziz A. Al-Khedhairy
Summary: This study describes the synthesis and characterization of a composite material consisting of copper and iron metal oxide. The synthesized nanocomposite nanoparticles exhibit good chemical characteristics and are effective in reducing the growth rate of cancer cells.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
M. A. Majeed Khan, Sushil Kumar, Maqusood Ahamed, Jahangeer Ahmed, Avshish Kumar, Muhammad Ali Shar
Summary: The BaTiO3 nanoparticles and BaTiO3@rGO nanocomposite were successfully prepared and characterized through various analysis techniques. The dielectric properties of the samples were studied, and the photocatalytic performance of the BaTiO3@rGO nanocomposite was found to be superior to the nanoparticles, possibly due to its larger surface area and efficient separation of photo-excited electron-hole pairs.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Biomedical
Maqusood Ahamed, Rashid Lateef, M. A. Majeed Khan, Pavan Rajanahalli, Mohd Javed Akhtar
Summary: A green and cost-effective method was reported to synthesize ZrO2-doped ZnO/reduced graphene oxide nanocomposites (ZnO/ZrO2/rGO NCs) using ginger rhizome extract. The ZnO/ZrO2/rGO NCs exhibited significantly enhanced anticancer activity in human lung and breast cancer cells compared to ZnO nanoparticles (NPs). Furthermore, the NCs demonstrated good cytocompatibility in normal cells. This study highlights the importance of medicinal herb-mediated synthesis of ZnO-based nanocomposites for biomedical research.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ravi Kant, Vaibhav Ahuja, Kavya Joshi, Haritik Gupta, Sumit Bhardwaj
Summary: In this study, pure and Ni-doped ZnO/rGO nanocomposites were prepared using a cost-effective wet chemical method, and their dielectric characteristics were explored. The addition of rGO increased the dielectric constant and dielectric loss at low frequency region in the nanocomposites. The ac conductivity of the nanocomposites gradually increased with frequency.
Article
Polymer Science
Nagarajan Kannapiran, Athianna Muthusamy, Sher Singh Meena
Summary: Different concentrations of ZnFe2O4 and manganese substituted ZnFe2O4 nanoparticles dispersed poly(o-phenylenediamine)/ferrite nanocomposites were prepared by in-situ oxidative polymerization method, and their properties were characterized. XRD pattern showed good interaction between nanoparticles and PoPD, with changes in crystalline size and morphology. Mossbauer spectra indicated iron in Fe3+ high spin state, and magnetic studies revealed ferromagnetic nature with saturation magnetization increasing with nanoparticle concentration in PoPD/ferrite nanocomposites. PoPD/ZnFe2O4 exhibited higher dielectric constant than PoPD/MnZnFe2O4, while AC conductivity increased with frequency and temperature in PoPD/ferrite nanocomposites.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Mohammad Bagher Askari, Hadi Beitollahi, Antonio Di Bartolomeo
Summary: Recently, the synthesis of a three-component catalyst consisting of zirconium oxide (ZrO2), nickel oxide (NiO), and reduced graphene oxide (rGO) in the form of ZrO2/NiO/rGO has been achieved by a simple one-step hydrothermal method. The catalyst exhibited excellent methanol and ethanol electrooxidation abilities with high current densities and cyclic stabilities, making it an attractive option for anode materials in alcoholic fuel cells. The detailed characterization and electrochemical tests demonstrate the outstanding capability of this new nanocatalyst.
Article
Environmental Sciences
Danni Mao, Xin Yan, Huijuan Wang, Zhou Shen, Chengwu Yi
Summary: In this study, rGO-WO3 nanocomposites were prepared and added into a DBDP system to investigate their catalytic effect on BPA degradation. The optimal catalytic effect was achieved at a dosage of 40 mg/L of rGO-WO3, with the highest degradation rate constant of BPA being 0.03129 min(-1). The results also showed higher TOC and COD removal rates, as well as confirmed the catalytic effect of rGO-WO3 through UV-Vis analysis.
Article
Materials Science, Multidisciplinary
Ankush G. Thate, Keshav S. Pakhare, Satish S. Patil, Vijaykumar M. Bhuse
Summary: This study presents betanin dye-loaded TiO2-ZnO thin film solar cells for solar energy harvesting. TiO2-ZnO nanocomposite was prepared by the one-step microwave-assisted technique and exhibited mixed phases of rutile and wurtzite structure of TiO2 and ZnO respectively. The morphological investigations showed interconnected many-fold nanoflakes morphology of deposited TiO2-ZnO nanocomposite. EDS confirmed the formation of stoichiometric TiO2-ZnO nanocomposite films. The optical study demonstrated electronic transition with a bandgap energy range of 2.72 to 2.94 eV. Photovoltaic performance showed photocurrent from 1.62 to 2.73 mA cm(-2) with the photovoltage of 659-795 mV and a 3.25% photo-conversion efficiency for the TZO3 dye-sensitized solar cell (DSSCs) sample.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Engineering, Chemical
Muhammad Faheem, Rahat Alam, Yao He, Linda Zou
Summary: Hybrid pseudocapacitive materials Na8Ti5O14/rGO and Ti(3)C(2)Tx/rGO were synthesized using hydrothermal processes. The nano-engineered architecture of both materials resulted in increased electrochemical capacitances, improved capacitance retention and impedance. The hybrid nanocomposites also exhibited high salt removal capacities in capacitive desalination experiments. The high desalting performance was attributed to efficient ion intercalation, enhanced electrical conductivity and structure accessibility. Further studies will investigate their selectivity in aqueous ionic solutions.
Article
Materials Science, Multidisciplinary
Haoqiang Zhang, Yu X. Xu, Yong Chen, Bin Peng, Tiefeng Wei, Fengge Zhang, Haiqing Li, Qimin Wang
Summary: The oxidation behavior of arc evaporated Al-Ti-B-N coatings was investigated. The addition of B promotes the formation of an amorphous scale and improves the oxidation resistance. The oxidation at the interface between the oxide and nitride leads to the continuous formation of an amorphous inner layer with excellent adhesion, while the crystalline outer oxide layer inhibits the inward diffusion of oxygen at elevated temperatures.
Article
Multidisciplinary Sciences
J. K. Shashikumara, Bhimanagouda Kalaburgi, B. E. Kumara Swamy, H. Nagabhushana, S. C. Sharma, P. Lalitha
Summary: The RGO-Y2O3 and RGO-Y2O3: Cr3+ nanocomposites were synthesized using a hydrothermal technique and characterized by various techniques. Both modified electrodes showed good current response for the electrochemical detection of dopamine.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
P. Ajay Kumar, A. Mallikarjun, M. Maheshwar Reddy, M. Jaipal Reddy, J. Siva Kumar
Summary: In order to enhance storage capacity and prevent electrical short circuits in electrochemical storage devices, it is essential and challenging to design and build Lithium ion batteries with flexible solid polymer electrolyte possessing strong ionic conductivity. This study details the use of solution-cast technique to create nano composite doped lithium solid polymer electrolytes (n-LSPEs), from polymer complex of poly (vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP), polyethylene oxide (PEO), and Lithium trifluoromethanesulfonate (LiCF3SO3), with nano ZrO2 (n-ZrO2).
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Environmental Sciences
J. L. Clabel Huaman, Gustavo Nicolodelli, Giorgio S. Senesi, Celia R. Montes, Neide A. Felicio Perruci, Vinicius D. N. Bezzon, Debora M. B. P. Milori
Summary: The study focuses on the physicochemical aspect of Amazonian soils, using various techniques to examine the mineral composition and surface morphology changes along the soil profile. The results provide new insights into the relationship between chemical properties and mineral changes in the Amazonian biome.
ENVIRONMENTAL EARTH SCIENCES
(2021)
Article
Physics, Multidisciplinary
Zhao-Gen Long, Chen-Ping Zheng, Jian-Chang Li
Summary: The study revealed that introducing high-kappa ZrO2 in rare-earth/high-kappa CeO2/ZrO2 films can enhance electrical performance, including lower set voltage, higher ON/OFF ratio, longer retention time, and greater uniformity. This is attributed to the stable formation and rupture of conductive filaments, facilitated by the larger dielectric constant of ZrO2 preventing Ce-O bonds from formation/rupture.
Review
Engineering, Chemical
Nam Nghiep Tran, Marc Escriba-Gelonch, Mohammad Mohsen Sarafraz, Quoc Hue Pho, Suresh Sagadevan, Volker Hessel
Summary: Removal of heavy metals in wastewater treatment is crucial. Various techniques have been developed for the removal of heavy metal ions, pharmaceuticals, and other contaminants. This paper comprehensively assesses the sustainability of common wastewater treatment technologies and aims for sustainability benchmarking of all technologies.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Is Fatimah, Putwi Widya Citradewi, Gani Purwiandono, Habibi Hidayat, Suresh Sagadevan
Summary: In this study, reduced graphene oxide/nickel oxide nanocomposites were synthesized using a green method and their photocatalytic activity was investigated. The results showed that the NiO/rGO composite exhibited excellent photocatalytic performance for tetracycline degradation under both UV and visible light illumination. Additionally, it also demonstrated antibacterial activity against Staphylococcus aureus and Eschericia coli.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Durga Devi Suppiah, Nurhidayatullaili Muhd Julkapli, Suresh Sagadevan, Mohd Rafie Johan
Summary: Metal and metal oxide nanoparticles can be produced using natural extracts instead of chemicals. Plant extraction techniques have advantages for industrial production due to their simplicity and environmental friendliness. Phytochemicals play a significant role in the synthesis reactions and can act as capping, reducing, and stabilizing agents. This green synthesis route is cost-effective and does not require expensive or hazardous chemicals. The review paper explores different green iron oxide nanoparticles and their potential applications in photocatalysis and biological activities.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
P. Ramadevi, Ra. Shanmugavadivu, Ragavendran Venkatesan, Jeyanthinath Mayandi, Suresh Sagadevan
Summary: In this study, nickel ferrite and aluminum-doped nickel ferrite were synthesized using the hydrothermal method. The cubic ferrite structure with space group Fd3m was confirmed by XRD analysis. The functional groups of the nanoparticles were analyzed using FTIR and FT-Raman spectroscopy. FESEM and EDX mapping analyses were used to examine the morphology and elemental composition of the products. The prepared nanoparticles showed good photocatalytic activity against methyl blue and methyl orange under visible-light irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Julia Izua Natasya Joaspizi, Nor Atilia Athira Zaahari, Suresh Sagadevan, Takaomi Kobayashi, Rohana Adnan, Saifullahi Shehu Imam, Mohd Amirul Ramlan
Summary: A photocatalyst composite film comprising cellulose acetate (CA)-supported bismuth ferrite (CA-BFO) was successfully fabricated using a phase-inversion technique. The composite showed high removal efficiency for a mixture of crystal violet (CV) and indigo carmine (IC) dyes under direct sunlight. The optimal pH for removing both types of dyes was found to be 6.0. A catalyst loading of 0.04 g/L of BiFeO3 distributed in the cellulose acetate membrane was able to degrade up to 100 ppm of mixed dyes and remained efficient over a wide pH range. The composite exhibited preferential adsorption to IC and higher photocatalytic affinity for CV, suggesting a synergistic mode of dye removal.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
B. Murugan, U. Mahalingam, P. Ramasamy, S. Sahadevan
Summary: This study presents a novel and simple approach using cadmium sulfide nanoparticles (CdS) as a coupler to detect, degrade, and remove plastic pollutants. Biomass-sourced activated carbon is used to improve the adhesion power of the CdSNPs@BBFCO/AC nanocomposites, which exhibit excellent adsorption and catalytic properties. The synthesized nanocomposites are able to detect and degrade various types of plastic samples, showing great potential for plastic pollutant detection, degradation, and removal processes.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hasanudin Hasanudin, Wan Ryan Asri, Lepa Husnia, Zainal Fanani, Roni Maryana, Muhammad Al Muttaqii, Zongyuan Zhu, Suresh Sagadevan
Summary: This study investigated the use of nickel phosphide immobilized on natural bentonite as a low-cost catalyst for diisopropyl ether (DIPE) production. The catalyst was prepared using a simple wet-impregnation method, and its physicochemical features were analyzed using various techniques. The results showed that the NiP species enhanced the acidity and surface area properties of the bentonite without altering its structure. The use of the NiP/bentonite catalyst resulted in a DIPE product yield of 68.52% with high stability over three cycles.
REACTION KINETICS MECHANISMS AND CATALYSIS
(2023)
Review
Engineering, Chemical
Is Fatimah, Ganjar Fadillah, Suresh Sagadevan, Won-Chun Oh, Keshav Lalit Ameta
Summary: The high demand for energy has led to the exploration of renewable resources, particularly biodiesel. Optimizing the production process of biodiesel is essential for it to become an eco-friendly and high-performance energy resource. The development of low-cost and reusable heterogeneous catalysts, such as mesoporous silica materials, has gained significant attention. This review provides updates on the modifications of mesoporous silica catalysts, including acidic, basic, enzyme, and bifunctional catalysts, and discusses future prospects.
Article
Physics, Applied
A. Perepeliuc, R. Gujrati, A. Srivastava, P. Vuong, V. Ottapilakkal, P. L. Voss, S. Sundaram, J. P. Salvestrini, A. Ougazzaden
Summary: Hexagonal boron nitride exhibits persistent photoconductivity after UV illumination, which is not affected by temperature or pressure. The effect can last for months at room temperature and even after heating up to 300°C. Increased conductivity of up to six orders of magnitude has been observed in the devices, with time constants up to 4600 days. Irradiation after saturation reduces the decay rate significantly. Magnesium-doped h-BN diodes have been used to determine the type of conductivity, with both n- and p-type durable photoinduced carriers observed depending on the wavelength of illumination. These findings are important for improving UVC LEDs.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Mohamad Aizat Bin Mohd Kassim, Noor Haida Mohd Kaus, Saifullahi Shehu Imam, Suresh Sagadevan, Subhan Salaeh
Summary: Iron oxide magnetic biochar-based composites were fabricated and their adsorption efficiency for various fluoroquinolone antibiotics in aqueous systems was investigated. The modified biochar with Fe3O4 nanoparticles showed successful evidence of modification on the biochar surface. The composite exhibited high removal efficiency for fluoroquinolones, and the adsorption process followed the pseudo-second-order kinetics model.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
V. Ramasamy, E. Thenpandiyan, G. Suresh, T. Sathishpriya, Suresh Sagadevan
Summary: Pristine and rare earth ions (Y3+ and La3+) decorated rhombohedral nano CaCO3/PEG were synthesized from natural dolomite rock via a novel green route biomimetic synthesis. The synthesized nanoparticles exhibited good thermal stability and blue-shifted absorption and emission peaks due to doping. The prepared samples showed high photocatalytic activity (92%), making them effective catalysts for environmental issues.
Article
Chemistry, Inorganic & Nuclear
V. Ramasamy, E. Thenpandiyan, G. Suresh, T. Sathishpriya, Suresh Sagadevan
Summary: The nano CaCO3 and Eu3+ doped CaCO3/PEG nanocomposites were prepared through the biomimetic method. The prepared products were characterized and the electrochemical performance was evaluated. The results showed that the Eu3+ doped CaCO3/PEG nanocomposite exhibited superior pseudocapacitive behavior and could be used as an electrode material for supercapacitor applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
S. M. Fathima Khyrun, Suresh Sagadevan, Jegatha Christy
Summary: Low-dimensional materials have unique properties and are widely used. Recent advancements in biomedical research have revealed their potential as next-generation antimicrobial drugs. In this study, CeO2 quantum dots were synthesized using a solution combustion method, and the effects of different fuels on their structure, morphology, and size were investigated. The surface morphology of CeO2 quantum dots was controlled by a self-propagating method, and they showed significant inhibitory activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Suresh Sagadevan, Is Fatimah, Jayasingh Anita Lett, Md Zillur Rahman, Estelle Leonard, Won-Chun Oh
Summary: This review provides a comprehensive overview of the green fabrication of nickel oxide nanoparticles using extracts from various plant and microbial sources, and discusses their potential uses in biological applications.
Article
Chemistry, Inorganic & Nuclear
Is Fatimah, Amri Yahya, Gani Purwiandono, Suresh Sagadevan
Summary: In this study, a new type of nanocomposite W/Ti-PCH was successfully synthesized and characterized. XRD and XPS analysis confirmed the dispersion of WO3 on the Ti-PCH surface, resulting in an increased band gap energy of the material. The nanocomposite exhibited excellent photocatalytic degradation performance.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)