Article
Materials Science, Characterization & Testing
Mohd Urooj Shariq, Ahmad Husain, Mahfoozurrahman Khan, Anees Ahmad
Summary: In this study, polypyrrole (PPy) and polypyrrole/molybdenum oxide composite (PPy/MoO3) were synthesized in an aqueous medium using anhydrous ferric chloride (FeCl3) as an oxidant. Characterization techniques confirmed the successful preparation of materials. The PPy/MoO3 sensor demonstrated improved sensing performance and excellent selectivity for ammonia vapours compared to the PPy sensor.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Yian Liu, Xu Ji, Huanyin Sun, Xiao Lin
Summary: PPy@MoO3 nanocomposites were successfully synthesized using a novel in situ polymerization growth method, exhibiting high specific capacitance and excellent cycle life, with great potential in the field of all-solid supercapacitors.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Physical
Chao Feng, Jiaxing Huang, Peihui Yan, Fei Wan, Yunfei Zhu, Hao Cheng
Summary: The research on the application of polypyrrole materials in cement composites shows that adding waterborne polypyrrole can improve conductivity and compactness, optimize microstructure, and inhibit the formation of Ca(OH)2.
Article
Materials Science, Ceramics
M. A. Gabal, E. A. Al-Harthy, Y. M. Al Angari, A. Awad, A. A. Al-Juaid, Abdu Saeed
Summary: In this study, ternary hybrid composites (PMG) were synthesized by combining polypyrrole (PPy), Mn-Zn ferrite (MZF), and graphite oxide (GO). The MZF was synthesized using acid leaching and auto-combustion processes. The XRD analysis showed that only PPy peaks were present in the ternary hybrids, suggesting the inclusion of MZF and GO into the PPy matrix. TEM images and EDS analysis confirmed that MZF particles and GO layers were embedded and coated with PPy. The electrical measurements showed that the conductivity of PMG composites was dependent on temperature up to 420 K, where dehydration and decomposition occurred. The presence of GO slightly improved the conductivity compared to pure PPy.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Rizwan Ullah, Mehtab Khan, Rozina Khattak, Nadia Khan, Muhammad Sufaid Khan, Yaser A. El-Badry
Summary: An in-situ chemical oxidative method was employed to synthesize a high-performance PPy/ZrO2 composite supercapacitor material. Characterization using different analytical techniques revealed the composite material's high capacitance, energy density, and stability.
Article
Chemistry, Physical
Ayten Ates, Hakan Hatipoglu
Summary: This study investigates the activity and stability of molybdenum trioxide (MoO3) catalyst for the gasification of formaldehyde in supercritical water. The structural and morphological changes of MoO3 during supercritical water gasification were analyzed. The addition of MoO3 catalyst changed the gasification mechanism and resulted in an increase in CO2 and CH4 fractions and a decrease in H2 and CO fractions.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Polymer Science
Amal L. Al-Alotaibi, N. Altamimi, E. Howsawi, Khaled A. Elsayed, Imen Massoudi, A. E. Ramadan
Summary: Two types of molybdenum trioxide (MoO3) were successfully synthesized using sol-gel and hydrothermal methods, crystallized in an orthorhombic structure with belt-like morphology. MoO3 exhibited good photocatalytic activity for the degradation of methylene blue, with slightly higher efficiency under visible light irradiation compared to UV light.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
K. A. Darwish, O. M. Hemeda, M. I. Abdel Ati, Anwer S. Abd El-Hameed, Di Zhou, Moustafa A. Darwish, M. M. Salem
Summary: This study evaluates the electromagnetic properties of hybrid materials made from polypyrrole (PPy) and barium hexaferrite (HF) for potential use in electromagnetic interference (EMI) shielding applications. The addition of 25% HF content produces the most stable and efficient composite for absorbing EM waves in the X-band. This research demonstrates the potential of conductive polymer composites for EMI shielding applications and provides insights into designing more efficient EMI shielding materials through optimizing the composition and characterizing the EM properties of the PPy/HF composite.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Characterization & Testing
Jothi Selvam, Bharath Samannan, Praveen Peter, Jeyabalan Thavasikani
Summary: The research focuses on designing a new catalyst by doping POM in conducting polymers. The synthesis of PPy-doped Keggin type POM using coprecipitation method resulted in enhanced conductivity and antimicrobial activity.
POLYMERS & POLYMER COMPOSITES
(2021)
Article
Chemistry, Analytical
Yuncheng Ye, Xin Guo, Yongjun Ma, Qi Zhao, Yan Sui, Jia Song, Weijing Ma, Pengxue Zhang, Chuanli Qin
Summary: Transition metal sulfides, such as NiMoS, have shown potential as electrode materials for supercapacitors. By synthesizing PNTs@NiMoS core-shell composites, researchers were able to significantly improve the specific capacitance and energy density of supercapacitors, resulting in a high-performance asymmetric supercapacitor with superior cycling stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Salma Aman, H. I. Elsaeedy, F. F. Alharbi, Syeda Rabia Ejaz, Naseeb Ahmad, Muhammad Zeshan, Mahmood Ali, HafizMuhammad Tahir Farid
Summary: Nanocomposites consisting of BaFe2O4 and polypyrrole were prepared using the sol-gel method, and the addition of spinel ferrite was found to increase the crystallite size of the composite. The results showed that the addition of ferrites decreased the dielectric constant and dielectric loss as a function of frequency, while increasing the DC resistivity and activation energy. The magnetic properties of the nanocomposites, including coercivity, remanence magnetization, and saturation magnetization, all showed an increase with the ferrite content.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Thermodynamics
Yuhuan Zheng, Zhikang Liu, Bin Liu, Shan Wang, Chuanxi Xiong
Summary: In this study, cactus-like CNT/SiO2/MoO3 composites were successfully synthesized, demonstrating improved rate capability and cycling stability. CNTs acted as electron transporters, while SiO2 and MoO3 stored lithium, with MoO3 also serving as a support to stabilize the electrode structure.
Article
Materials Science, Ceramics
Ruipeng Liu, Daoping Xiang
Summary: This study successfully fabricated porous ceramics with more than 99% mullite content at a low sintering temperature of 800 degrees C by using silicon debris and mesoporous aluminum oxide as silicon source and aluminum source, respectively. The addition of ammonium molybdate tetrahydrate as a sintering additive reduced the mullitization reaction temperature and allowed the synthesis of mullite at a low temperature. The porous mullite ceramics sintered at this temperature exhibited good mechanical properties and open porosity.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Gnanasambandam Anbuchezhiyan, Nabisab Mujawar Mubarak, Rama Rao Karri, Bashir Suleman Abusahmin, Faisal Abnisa, Muhammad Ekhlasur Rahman
Summary: A vacuum-assisted stir-casting process was used to synthesize nano-molybdenum trioxide-strengthened magnesium alloy composites. Morphological analysis showed that the ceramic reinforcing particles were uniformly distributed in the synthesized magnesium nanocomposites. Mechanical properties, such as tensile, compression, flexural and impact strengths, significantly increased in the nanocomposites due to enhanced grain refinement and interfacial reaction.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Ufana Riaz, Aaliyah Farooq, Nuzhat Nabi, Faith R. Nwanze, Fei Yan
Summary: This study reports the synthesis and characterization of water-dispersible polypyrrole (WD-PPy) and polythiophene (WD-PTh) copolymers in different weight ratios using experimental and theoretical techniques. Spectroscopic characterization of the copolymers was conducted using experimental C-13-NMR, FTIR, and UV-visible studies, as well as theoretical FTIR and UV-visible studies. Furthermore, biophysical interaction studies with bovine serum albumin (BSA) and human serum albumin (HSA) were performed, revealing strong binding with potential applications in designing inhibitors and biosensors.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Rani Ananda Sutar, Latha Kumari, M. Murugendrappa
CERAMICS INTERNATIONAL
(2020)
Article
Polymer Science
R. A. Sutar, M. V. Murugendrappa
JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS
(2020)
Article
Chemistry, Physical
Rani Ananda Sutar, Latha Kumari, M. Murugendrappa
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Nanoscience & Nanotechnology
P. Jisha, M. S. Suma, M. V. Murugendrappa
Summary: This study successfully fabricated a chemiresistive sensor using nanostructured tungsten trioxide doped polyaniline nanocomposite to detect malaria biomarker volatile organic compounds, showing good selectivity and response capabilities. The sensor has the potential to be used in developing a handheld portable device for detecting malaria biomarkers from human breath.
APPLIED NANOSCIENCE
(2021)
Article
Engineering, Electrical & Electronic
P. Jisha, M. S. Suma, M. V. Murugendrappa, Sutar Rani Ananda
Summary: The synthesized polyaniline-WO3 nanocomposite was used to make a VOC sensor for detecting malaria biomarker VOCs, showing good sensitivity and response time.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Environmental Sciences
Rashmi Mannu, Vaithinathan Karthikeyan, Murugendrappa Malalkere Veerappa, Vellaisamy A. L. Roy, Anantha-Iyengar Gopalan, Gopalan Saianand, Prashant Sonar, Binrui Xu, Kwang-Pill Lee, Wha-Jung Kim, Dong-Eun Lee, Venkatramanan Kannan
Summary: This study presents a new approach of using metal oxides modified with silver nanoparticles-based nanofluid for environmental remediation, showing superior catalytic efficiency for the reduction of 4-nitrophenol compared to other metal nanoparticles-based catalysts.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Physics, Applied
Rani Ananda Sutar, Latha Kumari, M. V. Murugendrappa
Summary: In this study, nanoparticles of manganese cobalt oxide were prepared using the hydrothermal method, and nanocomposites of MnCo2O4/polypyrrole were prepared by dispersing MCO nanoparticles in the PPy matrix through in situ chemical polymerization. Structural characterizations of the MCO/PPy nanocomposites were conducted using XRD and FESEM, which showed uniform dispersion of MCO nanoparticles and an effect on crystallinity and particle size. The observed shift in Fourier transform infrared spectra confirmed the interaction between MCO nanoparticles and PPy, with the highest conductivity observed in the 10 wt. % MCO/PPy nanocomposite supported by the calculated characteristic temperature and activation energy values.
JOURNAL OF APPLIED PHYSICS
(2021)
Correction
Chemistry, Physical
Rani Ananda Sutar, Latha Kumari, M. V. Murugendrappa
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
K. R. Bhagya, R. B. Basavaraj, K. R. Jyothi, H. Nagabhushana, M. Murugendrappa, A. P. Gnana Prakash, N. M. Nagabhushana, Vinayakprasanna N. Hegde
Summary: In this study, white light emitting Dy3+ ions doped Y2MoO6 nanopowders were successfully synthesized using green combustion method, showing excellent luminescent properties for indoor lighting applications in LED sources.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Engineering, Mechanical
R. Thejas, G. D. Prasanna, G. Nagaraju, M. Murugendrappa, C. S. Naveen
Summary: Polyaniline-nickel-zinc-ferrite nanocomposites were synthesized by varying the concentrations of Ni(0.6)Z(0.4)Fe(2)O(4) nanoparticles in the polyaniline matrix. Characterization techniques including X-ray diffraction, Fourier-transform infrared spectroscopy, and field-emission scanning electron microscopy were used to study the synthesized nanocomposites. The electrical properties of the samples were studied in a frequency range of 100 Hz-5 MHz and the gas-sensing performance was evaluated for butane gas, showing promising results for the polyaniline-10 wt% Ni(0.6)Z(0.4)Fe(2)O(4) nanocomposite.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Sutar Rani Ananda, Latha Kumari, M. Murugendrappa
Summary: ZnCo2O4/Polypyrrole (ZCO/PPy) and MnCo2O4/Polypyrrole (MCO/PPy) nanocomposites with different weight percentages were successfully prepared using the in situ chemical polymerization method. The chemiresistive gas sensing performance of ZCO/PPy and MCO/PPy nanocomposites was compared for methane, hydrogen sulfide, acetone, and carbon dioxide. Both nanocomposites showed higher sensitivity towards acetone gas at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
V. Sanjay, K. M. Rajashekara, Vinayak Pattar, M. V. Murugendrappa
Summary: This study evaluates the electrical and dielectric properties of poly (vinyl alcohol)-tellurium (PVA-Te) nano-composite films. The dispersion and functional groups were characterized using X-ray diffraction and Fourier transmission infrared-attenuated total reflection spectroscopic studies. The surface morphology was studied using scanning electron microscope and high-resolution-transmission electron microscope. These composites show potential applications in microwave and microelectronic industries.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Correction
Engineering, Electrical & Electronic
B. V. Chaluvaraju, Sangappa K. Ganiger, M. V. Murugendrappa
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
M. Nasreen Taj, B. DarukaPrasad, N. Rama Rao, H. Nagabhushana, K. S. Anantharaju, M. V. Murugendrappa
Summary: Strontium silicate nanoparticles were incorporated into different polymer matrices to prepare nanocomposite films, which were characterized by X-ray diffraction and dielectric property testing. The addition of strontium silicate resulted in a crystalline phase in the nanocomposite films, with a decrease in dielectric constant as frequency increased and enhanced interaction between polymer and nanoparticles.
MATERIALS TODAY-PROCEEDINGS
(2021)
Proceedings Paper
Physics, Condensed Matter
S. N. Madhuri, M. Murugendrappa, K. Rukmani
DAE SOLID STATE PHYSICS SYMPOSIUM 2019
(2020)
