Article
Chemistry, Multidisciplinary
Nhiem Pham-Ngoc, Huy Nguyen-Phu, Eun Woo Shin
Summary: In this study, we investigated urea glycerolysis over ZnAl2O4 catalysts prepared by the citrate complex method. We found that different calcination temperatures strongly influenced the surface properties of the catalysts, resulting in varying degrees of surface acidity. The ZnAl2O4-550 catalyst, with a large specific surface area and highly disordered surface sites, exhibited better catalytic performance than the ZnAl2O4-650 catalyst.
Article
Physics, Applied
R. Sankaranarayanan, S. Shailajha, S. Seema, M. S. Kairon Mubina
Summary: A Zn0.4Alx@Ni0.6-xFe2O4 nanocomposite system with ferrimagnetic properties was prepared. The substitution of Al3+ ions optimized the structural and frequency-dependent sensitivity of the soft magnetic core materials. The presence of nonstoichiometric constituents and secondary phases was detected through XRD analysis. The rearrangement of Ni2+ and Fe3+ ions due to the replacement of Al3+ ions resulted in optimized magnetic behavior and impedance response. The resulting materials showed enhanced coercivity, saturation magnetization, and magnetic permeability, as well as increased sensitivity.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2023)
Article
Energy & Fuels
Thirumala Rao Gurugubelli, Bathula Babu, Kisoo Yoo
Summary: Nanomaterials with collective optical and magnetic properties, known as smart or functional materials, have diverse applications in science and technology. This study focused on the effects of cobalt ions at different concentrations on the structural, optical, and magnetic properties of Co-doped ZnAl2O4. The research revealed a decrease in bandgap and ferromagnetic behavior in the Co-doped ZnAl2O4 samples, showing potential for energy storage applications.
Article
Materials Science, Multidisciplinary
M. Sameeh, M. Khairy, T. Esawy, W. A. A. Bayoumy
Summary: The nanocrystalline ZnMn2-xCrxO4 (x = 0, 1, 2) were successfully synthesized by combustion method. The prepared samples exhibited super-paramagnetic behavior and semiconductor properties, with increasing electrical conductivity at higher temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Jiao Qu, Binquan Zhao, Qi Zhu
Summary: In the field of information encryption, multi-mode luminescent materials are crucial. In this study, ZnAl2O4:xTi4+ and ZnAl2O4:1%Ti4+ ,yCr3+ optical materials were successfully synthesized. Doping Ti4+ and Cr3+ resulted in different light outputs under various excitations, demonstrating their potential applications.
Article
Chemistry, Physical
Haozhang Liang, Zhiwei Luo, Weicheng Lei, Ping Zhang, Songxuan Liu, Ziyou Zhou, Anxian Lu
Summary: Er3+-Yb3+ co-doped glass-ceramics were fabricated by conventional methods, with the precipitation of ZnAl2O4 microcrystals confirmed. The glass-ceramics showed enhanced fluorescence intensity and optical temperature sensing properties, making them a potential high-sensitivity material for up-conversion optical temperature sensing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
M. Tanveer, Iqra Nisa, Ghulam Nabi, Muhammad Khalid Hussain, Syed Khalid, M. A. Qadeer
Summary: The novel study successfully prepared Cd-Zn co-doped Magnesium ferrites and systematically analyzed their structural, optical, and magnetic behavior. The experimental results suggest potential applications for this co-doped Magnesium ferrite.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Milad Kohi Habibi, Seyed Mahdi Rafiaei, Amir Alhaji, Maryam Zare
Summary: Ce-doped ZnAl2O4: x% Ce particles were synthesized and their properties were studied, showing that the calcination temperature significantly affects microstructures and luminescence characteristics, while the concentration of Ce ions influences photoluminescence behavior intensity.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Materials Science, Ceramics
G. Vinod, K. Rajashekhar, J. Laxman Naik
Summary: The current study investigates the effects of rare-earth Dy3+ ion substitution on the structural, optical, electrical, and magnetic properties of Cu0.8Cd0.2Fe2O4 nano-ferrites. Dy3+ doped Cu-Cd nano-ferrites with varying Dy3+ concentrations were fabricated using the citrate sol-gel auto combustion technique. The properties of these ferrite nanoparticles were characterized using various techniques including XRD, SEM, TEM, FTIR, UV-Vis, ESR, VSM, and I-V measurements.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Zhao Xu, Li Shaozhen, Mei Yunjun, Chen Luocheng, Guo Hongxuan, Liu Bin
Summary: ZnMoO4 nanoparticles of different morphologies were synthesized using the industrial dry method. Both nanoparticles showed better antibacterial properties compared to conventional ZnMoO4 with larger crystal size. The structure, size, and concentration of the nanoparticles influenced their antibacterial efficiency.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Ibtihel Soudani, Khawla Ben Brahim, Abderrazek Oueslati, Abdelhedi Aydi, Kamel Khirouni, A. Benali, E. Dhahri, M. A. Valente
Summary: This study investigates the optical, magnetic, and dielectric properties of a LiMn0.5Fe2O4 ferrite prepared by a solid-state reaction. Raman spectroscopy analysis confirms the presence of active modes representing oxygen anion vibrations. The compound exhibits a direct optical band gap of 3.51 eV, indicating semiconductor behavior. The ferromagnetic contribution dominates over the antiferromagnetic one, and the colossal dielectric permittivity suggests potential applications in multifunctional devices.
Article
Materials Science, Ceramics
Zein K. Heiba, Noura M. Farag, A. M. El-naggar, Jasper R. Plaisier, A. M. Aldhafiri, Mohamed Bakr Mohamed
Summary: Nano CuCo2-xMxO4 (x = 0, 0.1, 0.2, M = Cr or Fe) samples were synthesized by hydrothermal method and characterized using various analysis techniques to study their structure and properties. The doped samples exhibited better catalytic activity, as indicated by the experimental results.
CERAMICS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
M. Nadafan, Gh. h. Khorrami, M. Arab, Z. Dehghani, A. Kompany
Summary: Zn(1-x)CrxAl2O4 (x = 0.00, 0.05, 0.10, 0.20) nanoparticles were synthesized using gelatin as a polymerization agent. The structure and morphology were analyzed by X-ray diffraction and scanning electron microscopy. The results showed that the samples were polycrystalline and crystallized in a cubical spinel phase. Increasing the percentage of Cr led to a decrease in crystallite size and energy bandgap. The Z-scan approach was used to study the nonlinear absorption coefficient and refractive index of the samples.
Article
Materials Science, Multidisciplinary
Muhammad Amir Rafiq, Athar Javed, Muhammad Nasir Rasul, Muhammad Nadeem, Faisal Iqbal, Altaf Hussain
Summary: Various spinel oxides including GeGa2O4, CoGa2O4, GeCo2O4, and CoCo2O4 have been studied for their structural, magnetic, optical, and electronic properties using density functional theory calculations. Among these oxides, CoGa2O4, GeCo2O4, and CoCo2O4 show 100% spin-polarization and stable cubic structure in the ferromagnetic phase, indicating potential integration in magnetic-semiconducting devices. The results also suggest that Co occupancy in the GeGa2O4 lattice has significant effects on its electronic, magnetic, and optical behaviors.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Maha Mostafa, Oday Saleh, Ahmed Maher Henaish, Samir Ali Abd El-Kaream, Ryad Ghazy, Osama M. Hemeda, Ali M. Dorgham, Hanan Al-Ghamdi, Aljawhara H. Almuqrin, M. I. Sayyed, Sergei V. Trukhanov, Ekaterina L. Trukhanova, Alex V. Trukhanov, Di Zhou, Moustafa A. Darwish
Summary: In this study, Ni1-x+2Mgx+2Fe2+3O4 nano-ferrites with different Mg doping levels were synthesized using the auto combustion flash method, and their structural, thermal stability, and magnetic properties were investigated. The results showed that increasing the Mg content delayed the crystallization process and increased the average grain size. The magnetic parameters decreased with increasing Mg content. Additionally, the electrical resistivity of the samples exhibited a semiconductor trend, and the dielectric constant sharply increased at high temperatures, attributed to the enhanced mobility of charge carriers.
Article
Physics, Condensed Matter
V. Vetrivelan, G. Ramalingam, A. Manikandan, S. Viswanathan, P. Boomi, G. Ravi, B. Arjun Kumar
Summary: In this study, a novel two-dimensional nanostructure of pure TiO2 and a heterostructure of citric acid and L-cysteine capped on MoS2@TiO2 were synthesized using the hydrothermal method. Experimental and theoretical studies showed that the heterostructure has potential applications in fields such as dye-sensitized solar cells, optoelectronic devices, and energy storage. The L-cysteine capped MoS2@TiO2 heterostructure exhibited better solar cell performance compared to single-phase TiO2.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Crystallography
M. Muthuppalani, Ahmed Al Otaibi, S. Balasubramaniyan, S. Manikandan, P. Manimaran, G. Mathubala, A. Manikandan, Muhammad Nadeem Arshad, Madhu Puttegowda, Hajer Saeed Alorfi, Anish Khan, Abdullah M. Asiri, Mohammed M. Rahman
Summary: This study synthesized and characterized Co(II) and Ni(II) mixed ligand complexes derived from isoniazid, 9-fluorenone, and oxalate. Various analytical techniques were used to determine the properties of the metal complexes, revealing an octahedral geometry. The ratios of the mixed ligands in the complexes were found to be 1:1:2:1 (M:L1:L2:L3), and the formula for the complexes was [M(L1)(L2)2(L3)]. The complexes exhibited non-electrolyte behavior according to molar conductance data, and the cyclic voltammogram showed quasi-reversible single electron transfer for the Co(II) complex and one-electron transfer for the Ni(II) complex. The infrared spectra indicated coordination of the ligands through N and O donor sites. Magnetic moment values and UV-visible spectra supported the octahedral geometry of the complexes. X-ray diffraction patterns confirmed the crystalline nature of the complexes. The antimicrobial, antioxidant, and anti-inflammatory activities of the metal chelates were evaluated and compared with known antibiotics.
Article
Materials Science, Multidisciplinary
A. Dinesh, K. Kanmani Raja, Ayyar Manikandan, M. A. Almessiere, Y. Slimani, A. Baykal, Hajer Saeed Alorfi, Mahmoud Ali Hussein, Anish Khan
Summary: This paper investigates the effects of cerium (Ce) substitution on the morphological, magnetic, and structural characteristics of Mn0.5Zn0.5CexFe2-xO4 ferrite nanoparticles. The sample with Ce content of 0.3 showed higher degradation performance under visible light irradiation, suggesting its potential for high-frequency applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
T. L. Ajeesha, Ayyar Manikandan, Ashwini Anantharaman, Sagaya Jansi, M. Durka, M. A. Almessiere, Y. Slimani, A. Baykal, A. M. Asiri, H. A. Kasmery, Anish Khan, A. A. P. Khan, P. Madhu, Mary George
Summary: The magnetic and optical properties of copper-doped spinel calcium ferrite nanoparticles have attracted the attention of researchers. The prepared samples were characterized for their structural, magnetic, electrical, and optical properties. The nanoparticles exhibited stable structure, magnetic behavior, and semiconductor properties. Additionally, the photocatalytic degradation and antibacterial activity of the nanocatalysts were also investigated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Environmental
Mallikarjunagouda B. B. Patil, Shridhar N. N. Mathad, Arun Y. Y. Patil, Anish Khan, Mahmoud Ali Hussein, Abeer M. M. Alosaimi, Abdullah M. M. Asiri, A. Manikandan, Mohammad Mujahid Ali Khan
Summary: The study prepared poly(vinyl alcohol) (PVA) and starch-based polymeric films with different concentrations of grapefruit seed extract (GSE). The films showed improved mechanical properties and antimicrobial efficacy when a small amount of GSE was incorporated.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Crystallography
Salma A. A. Al-Zahrani, Mallikarjunagouda B. B. Patil, Shridhar N. N. Mathad, Arun Y. Y. Patil, Ahmed A. A. Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, A. Manikandan, Edi Syafri
Summary: The green synthesis approach using Punic granatum plant leaf extract successfully produced environmentally friendly zinc oxide nanoparticles. Characterization using various techniques revealed that the nanoparticles were crystalline, with an average diameter of 20 nm. The synthesized nanoparticles demonstrated effective photocatalytic oxidation of reactive dye in water, advancing the development of green photocatalysts for dye removal.
Article
Chemistry, Physical
Salma Ahmed Al-Zahrani, Khalid Umar, Saleh Ali Tweib, Jebrel Abdeljawad M. Rashd, Saima Khan Afridi, Showkat Ahmad Bhawani, Ahmed Al Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, Manikandan Ayyar
Summary: In this study, zinc oxide (ZnO) and zinc oxide/graphene oxide (ZnO/GO) were successfully synthesized using Carica papaya leaf extract and oil palm empty fruit bunch biomass. The samples were characterized to understand their morphology, size, structural phase purity, functional groups and optical properties. The results showed the presence of various peaks and a red shift in the case of ZnO/GO. The synthesized materials exhibited nanosized particles and showed high decolorization efficiency for methylene blue.
Article
Crystallography
Salma A. Al-Zahrani, Mallikarjunagouda B. Patil, Shridhar N. Mathad, Arun Y. Patil, Ahmed Al Otaibi, Najat Masood, Dorsaf Mansour, Anish Khan, Vikas Gupta, Niraj S. Topare, Amita Somya, Manikandan Ayyar
Summary: The study explored the photocatalytic degradation of Acid Red 26 using graphitic carbon nitride (g-C3N4) catalyst and UV-A light. Both synthetic and actual municipal wastewater showed high clearance rates, although the degradation was slower in wastewater due to its complex chemical composition. Intermediate products were identified using liquid chromatography-mass spectrometry (LC-MS), and the importance of reactive species (h⁺ and O-2⁻) in the degradation process was demonstrated.
Article
Engineering, Electrical & Electronic
J. V. Annie Vinsla, P. Annie Vinosha, S. Vijayalakshmi, Belina Xavier, A. Muthukrishnaraj, Manikandan Ayyar, Mohamed Henini
Summary: In this study, ammonia-free hexagonal boron nitride (h-BN) nanocrystals were successfully synthesized using a cost-effective hydrothermal technique. The synthesized nanocrystals, incorporated with varying weight% of cobalt (Co), exhibited enhanced performance in terms of structural, optical, elemental, functional, and morphological properties. The 10% Co-doped h-BN nanocrystals showed superior catalytic activity, leading to a remarkable 99.4% degradation of the Methylene Blue (MB) dye within just 9 minutes.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Suresh Antony, Rushika J. Mehta, Soosaimanickam Maria Packiam, Joseph Devadass Balthazar, Melvin A. Daniel, Lakshminarayanan Srimathi Priya, Manikandan Ayyar
Summary: Morus sp. (mulberry) has gained importance in recent years due to its phytochemical composition and beneficial effects on human health. The leaves of the mulberry plant contain significant amounts of glycosylated flavonols and chlorogenic acid, making it a potential alternative therapy for various ailments. This study found that the ethanolic extract of mulberry leaves showed higher xanthine oxidase (XO) inhibition, indicating its potential as an anti-gout agent. The total polyphenol content of the extract was found to be associated with its anti-gout property.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
C. Bhagya Lakshmi, S. Anna Venus, S. Velanganni, A. Muthukrishnaraj, Manikandan Ayyar, Mohamed Henini
Summary: This study investigates the use of V2O5/ZnO and rGO-V2O5/ZnO nanocomposites as photoanodes to improve the power conversion efficiency of dye-sensitized solar cells. The structural and electrical characteristics of these nanocomposites are analyzed, and it is found that they can significantly enhance the performance of the solar cells.
Article
Chemistry, Multidisciplinary
Pitcheri Rosaiah, Ponnusamy Divya, Sangaraju Sambasivam, Ammar M. Tighezza, V. Kalaivani, A. Muthukrishnaraj, Manikandan Ayyar, Theophile Niyitanga, Haekyoung Kim
Summary: MnO2 NWs/MWCNT and MnO2 NWs/rGO composites were synthesized using a hydrothermal method, showing high specific discharge capacity and excellent cycling stability.
Article
Green & Sustainable Science & Technology
S. Saranya, S. Dhanapandian, S. Suthakaran, Sankaranarayanan Nagarajan, N. Krishnakumar, S. Dinesh, A. Muthukrishnaraj, Ayyar Manikandan
Summary: Evolving efficient electrochemically active nanostructures from earth-abundant transition metals, such as nickel (Ni) and manganese (Mn), has gained significant interest for energy storage applications. In this study, Ni-Mn diselenide nanoparticles with spherical morphology were successfully synthesized using a simple hydrothermal method. The synthesized NiMnSe2 nanoparticles demonstrated a cubic phase and excellent electrochemical behavior, with a specific capacitance of 1490F/g.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Chemistry, Physical
Ghulam Abbas, Francisco C. Franco Jr, S. Janani, J. N. Cheerlin Mishma, A. Manikandan, S. Muthu, Christopher E. Anson
Summary: A new dimeric complex was synthesized through a one-pot reaction in MeOH and characterized by infrared spectroscopy, elemental analysis, and single crystal X-ray diffraction. The theoretical study and molecular docking analysis revealed the structural properties and potential biological activity of the complex.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
Article
Chemistry, Physical
Suthagar Govindaraj, Saravanakumar Ayyapan, Poornima Durai, Priyanka Kandasamy, Loganathan Guganathan, Madhappan Santhamoorthy, Anbazhagan Murugan, Selvakumar Suthakaran, Subbarayan Sathiyamurthy, Manikandan Ayyar
Summary: The current study aims to collect baseline research data for the area near the Vellar estuary mangroves. Factors such as temperature, nitrate, pH, salinity, ammonia, inorganic phosphate, dissolved oxygen, and silicate play a key role in chemical and biological water reactions as well as the growth of flora and fauna in the estuary. The study reveals unique seasonal variations and an increasing trend in nutrient levels during the summer to monsoon seasons.
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2023)
