Article
Chemistry, Multidisciplinary
Ping Li, Bo He, Xuan Li, Yunfei Lin, Shaokun Tang
Summary: In this study, a modified chitosan was used as a linker to prepare a membrane based on dual-sulfonate covalent organic framework nanosheets. The resulting membrane exhibited dense structure, exceptional stability, superior proton conductivity, and tensile strength.
Article
Food Science & Technology
Chuanai Cao, Xin Li, Yongchao Yin, Baohua Kong, Fangda Sun, Qian Liu
Summary: The study found that increasing NaCl concentration negatively impacts the physical and oxidative stabilities of filled hydrogels, leading to larger particle sizes, decreased brightness, lower apparent viscosity, and increased oxidation product formation.
Article
Chemistry, Physical
Harilal, Avanish Shukla, Prakash Chandra Ghosh, Tushar Jana
Summary: The study successfully enhanced the structural and mechanical stability of pyridine-bridged oxypolybenzimidazole (PyOPBI) membranes in concentrated phosphoric acid, and significantly improved proton conductivity by incorporating bulky substituents and flexible aryl ether backbones. The membranes exhibited good stability and high proton conductivity at high temperatures, attributed to the bulky pendent groups and flexible backbone, showing promising potential for advanced PBI-based HT-PEM fuel cells.
ACS APPLIED ENERGY MATERIALS
(2021)
Review
Chemistry, Physical
Abdul Hakeem Anwer, Afreen Ahtesham, Mohd Shoeb, Fouzia Mashkoor, Mohd Zahid Ansari, Shushuai Zhu, Changyoon Jeong
Summary: The modern eco-friendly materials used in research and innovation today are nanocomposites and bionanocomposite polymers, which are suitable for various industrial, medicinal, and energy applications due to their unique composite properties. Biopolymer-based nanocomposites are considered superior alternatives to traditional materials as they reduce reliance on fossil fuels and promote the use of renewable resources. This review covers the current state-of-the-art in nanocomposite and bio-nanocomposite materials, focusing on ways to improve their features and the various applications they can be used for, as well as the future outlook and current challenges, with a focus on sustainability.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2023)
Article
Polymer Science
R. Chitra, M. Vengadesh Krishna, S. Selvasekarapandian
Summary: A new class of environmentally friendly bio-based electrolytes has been synthesized from natural tree gum, with ionic salt as an additive to optimize ionic conductivity. The addition of salt enhances the amorphous nature of the membranes, with the composition of MG and 0.5 wt % NH4NO3 showing the highest degree of amorphous nature. The obtained solid polymer electrolyte achieves high ionic conductivity and a high ionic transference number, demonstrating the potential utility of natural tree gum as a successful electrolytic material.
Article
Polymer Science
Arijit Ghorai, Riddhi Kamble, Susanta Banerjee
Summary: A new diphenylphosphine oxide based dialkyne, POALK, was synthesized under mild conditions and used to prepare fluorinated sulfonated polytriazoles via click polymerizations with other comonomers. The resulting sulfonated polymers showed exceptional thermal, mechanical, and thermomechanical stability, along with high proton conductivity. The presence of triarylphosphine oxide units in the polymers contributed to slowing down peroxide radical attacks and facilitating proton transportation through ionic nanochannels.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Agriculture, Multidisciplinary
Demei Meng, Liqun Zhang, Qiaoe Wang, Yidan Zhang, Yifei Sun, Haili Zhang, Zhiwei Wang, Zhongkai Zhou, Rui Yang
Summary: Phycoerythrin (PE) extracted from Porphyra haitanensis can form complexes with oligochitosan, increasing the alpha-helix content and improving thermal and light stability. This study provides a method to reduce the susceptibility of PE to environmental changes, promoting its application as a natural pigment protein in food and chemical fields.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Chemistry, Physical
Joelma Roda Zitha Vilanculos, Bruna Silva de Farias, Jenifer Ines Engelmann, Eduardo Silveira Ribeiro, Patricia Diaz de Oliveira, Tito Roberto Sant'Anna Cadaval Jr, Luiz Antonio de Almeida Pinto
Summary: This study aimed to develop new delivery carriers based on chitosan-xanthan gum nanoemulsions with tuna oil. The results showed that electrostatic interactions between chitosan and xanthan gum improved the electrostatic stability of the nanoemulsions, while the increased viscosity due to xanthan gum reduced the diffusivity of dissolved oxygen and increased the oxidative stability. Moreover, electrostatic interactions between chitosan and xanthan gum increased the steric and oxidative stabilities of the nanoemulsions.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Nanoscience & Nanotechnology
Xiao-Min Li, Yameng Wang, Yongbiao Mu, Jiang Liu, Lin Zeng, Ya-Qian Lan
Summary: The study successfully synthesized a composite material with polyoxometalate and an ionic liquid confined in metal-organic framework channels through electrostatic interaction at ambient conditions. The obtained material exhibits fast proton transfer and high proton conductivity, which makes it a potential room-temperature proton conductor without a humidifier. Furthermore, the material can be fabricated into a composite membrane for proton-exchange membrane fuel cells, showing promising power density.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Engineering, Environmental
G. Parvathy, A. S. Sethulekshmi, Jitha S. Jayan, Akhila Raman, Appukuttan Saritha
Summary: Lignin, a renewable material with excellent properties, has gained research interest for its potential applications in various fields, making it a valuable material in the composite arena.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Materials Science, Multidisciplinary
Arijit Ghorai, Sambit Roy, Sovik Das, Hartmut Komber, Makarand M. Ghangrekar, Brigitte Voit, Susanta Banerjee
Summary: A series of sulfonated polytriazoles were synthesized via copper-induced click polymerization, demonstrating high molecular weight, thermal stability, and proton conductivity, with balanced water management and high oxidative stability. Additionally, the membranes showed a hydrophilic-hydrophobic phase-segregated morphology and comparable performance to Nafion 117 in microbial fuel cells.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhengqiang Xia, Xu Jia, Xi Ge, Chongting Ren, Qi Yang, Jun Hu, Zhong Chen, Jing Han, Gang Xie, Sanping Chen, Shengli Gao
Summary: A nanoscale MOF with high stability and excellent electrochemical performance has been successfully fabricated through structural and compositional optimization, showing great potential for applications in energy storage and conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Polymer Science
Qingfei Duan, Ying Chen, Long Yu, Fengwei Xie
Summary: Biopolymers have high potential for specialized applications and creating composite materials with defined chain interactions and tailored properties is important. This study shows that glycerol and isosorbide are effective plasticizers for a chitosan-gelatin material, but isosorbide can disrupt the polyelectrolyte complexation between the biopolymers, impacting the material's glass transition temperature, mechanical properties, and water absorption. The addition of isosorbide and/or montmorillonite makes the materials hydrolytically unstable, but also affects surface hydrophilicity differently from chain structure.
Article
Chemistry, Applied
Jianzhong Ma, Chao Liu, Yufei Dong, Qianqian Fan, Yan Bao, Hongxia Yan
Summary: The mechanical properties and interfacial interaction strength of nano-composite films can be effectively enhanced by introducing positively charged SiO2.
PROGRESS IN ORGANIC COATINGS
(2022)
Review
Chemistry, Physical
Edgar Alan Cortes-Morales, Guadalupe Mendez-Montealvo, Gonzalo Velazquez
Summary: Understanding the interactions between polysaccharide/protein complexes and the influence of pH on structural modifications during complexation process is essential for designing efficient encapsulation systems.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2021)
Article
Materials Science, Composites
J. B. Arul Joseph Helen Therese, K. Selvakumar, R. Gayathri, M. Ramesh Prabhu, P. Sivakumar
Summary: Composite membranes based on SPEEK/PMA were prepared and modified with PANI, showing improved proton conductivity. AFM images indicated better compatibility between hetero polyacids and SPEEK matrix. SPEEKs/PMAs-PANI membranes could be a promising material for DMFC applications due to their high thermal stability and proton conductivity.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2021)
Article
Chemistry, Physical
Gurusamy Sowmya, Shanmugaraj Gowrishankar, Manimuthu Ramesh Prabhu
Article
Energy & Fuels
Karuppusamy Raja, Mariappan Raja Pugalenthi, Manimuthu Ramesh Prabhu
Summary: By acid-base blending and loading BaCeO3 nanoparticles, the membrane shows enhanced stability and improved performance, including conductivity and power density. The blended membrane exhibits high voltage retention and low voltage degradation in durability study.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Polymer Science
K. Selva Kumar, M. Ramesh Prabhu
Summary: Polybenzimidazole (PBI) -sulfonated nano titania (S-TiO2) polymer composite membranes were prepared by solvent casting technique for high temperature polymer electrolyte membrane (HT-PEM) fuel cells, which exhibited good thermal stability and high proton conductivity, showing potential application prospects.
MACROMOLECULAR RESEARCH
(2021)
Article
Engineering, Chemical
M. Raja Pugalenthi, M. Ramesh Prabhu
Summary: By electrospinning, nanofiber mats of SPEEK/SFN composites were produced with dual interfacial sites for high proton transporting pathways. The interfacial sites provide strong electrostatic attraction, improving structural stability by controlling polymer chain movement, and creating well-interconnected channels for ultrafast proton migration.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Energy & Fuels
Raja M. Pugalenthi, Ramesh Prabhu Manimuthu
Summary: By synthesizing polydopamine-coated calcium zirconate nanoparticles and dispersing them in a hydroxylated sulfonated poly(ether ether ketone) matrix, a nanohybrid combination (SPEEK-DCZT) was successfully prepared. This nanocomposite membrane showed improved dispersion and enhanced compatibility in the polymer matrix, leading to superior conductivity and thermomechanical properties.
Article
Energy & Fuels
Gayathri Ravi Kumar, Cao Guozhong, Ramesh Prabhu Manimuthu
Summary: The sandwich structure of proton exchange membrane (PEM) made of sulfonated poly(ether sulfone) (SPES) and sulfonic acid functionalized multiwalled carbon nanotubes (SMWCNT) enhances proton conductivity and mechanical properties, exhibiting high thermal stability and promising nature for fuel cell applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
G. Maheshwaran, C. Selvi, R. Kaliammal, M. Ramesh Prabhu, M. Krishna Kumar, S. Sudhahar
Summary: The Cr2O3-NiO NC synthesized by hydrothermal method showed superior electrochemical performance with higher specific capacitance and lower resistance. The electrode material exhibited good stability and reversibility, maintaining 87.7% capacitance retention even after 2000 cycles.
Article
Materials Science, Ceramics
Z. Mohamed Riyas, R. Gayathri, M. Ramesh Prabhu, K. Velsankar, S. Sudhahar
Summary: Eco-friendly synthesis of Mg-doped ZnO nanoparticles using Ficus religiosa leaf extract was successfully achieved, and the nanoparticles showed good thermal stability and biomedical properties.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Gayathri Ravi Kumar, Raja M. Pugalenthi, Guozhong Cao, Ramesh Prabhu Manimuthu
Summary: In this study, high-performing porous sulfonated poly(ether sulfone) (PSPES) nanocomposite membranes with excellent proton conductivity and stability were synthesized via modified non-solvent-induced phase inversion. The inclusion of hydroxylated boron nitride (HBN) in the membrane resulted in the formation of proton transport bridge and continuous proton transfer channels, leading to improved current and power density, as well as reduced membrane degradation.
Article
Electrochemistry
Maheshwaran Girirajan, Nivedhitha Bharathi Alagarsamy, Kaliammal Ramachandran, Ramesh Prabhu Manimuthu, Devendran Pazhanivel, Krishna Kumar Muthusamy, Sudhahar Sakkarapani
Summary: In this study, bismuthene nanosheets with unique quantum chemistry, tunable interlayer bandgap, and active functional groups were successfully synthesized using the standard liquid phase exfoliation technique. The crystal structure, surface nature, stacking, and electrochemical properties of the bismuthene nanosheets were thoroughly characterized by various techniques including XRD, FTIR, HR-TEM, AFM, CV, and Trasatti and Dunn's approach. The results demonstrated the potential of bismuthene nanosheets for enhanced electrochemical behavior and energy storage applications, as evidenced by their high gravimetric capacity, capacity distribution, and asymmetric supercapacitor performance.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Z. Mohamed Riyas, C. Priya, R. Premila, G. Maheshwaran, S. Sudhahar, M. Ramesh Prabhu
Summary: Global economic growth and rapid industrial development have led to a severe energy problem, necessitating the search for alternative and sustainable energy sources. Supercapacitors are among the most important energy storage devices, and the development of high-performance supercapacitor electrodes is currently a major research topic. This study presents the hydrothermal research results on rare earth-based La2O3-NiO-based electrodes for electrochemical supercapacitor applications, demonstrating their excellent performance.
JOURNAL OF ENERGY STORAGE
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
S. Thirbika, H. Karthi, R. Premila, M. Ramesh Prabhu
Summary: Nickel oxide nanoparticles were successfully synthesized using aqueous leaf extract from Lemongrass, showing promising antibacterial properties based on physical and biological characterizations.
MATERIALS TODAY-PROCEEDINGS
(2022)
Article
Engineering, Environmental
M. Raja Pugalenthi, R. Gayathri, Guozhong Cao, M. Ramesh Prabhu
Summary: The cation exchange membrane is fabricated by assembling synthetic acid-base pairs in the composite matrix. Adding AH-BN into the SPEEK-PES enhances conductivity and power density, with excellent chemical stability and high residual weight.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Materials Science, Composites
Kanakaraj Selvakumar, Ae Rhan Kim, Manimuthu Ramesh Prabhu, Dong Jin Yoo
Summary: A series of novel PBI/SrTiO3 nanocomposite membranes were fabricated using a solution casting method, with the optimized PBI/SrTiO3-8 composite membrane containing 8wt% SrTiO3 showing higher proton conductivity and thermal stability, making it a potential candidate for high-temperature PEM fuel cell applications.
COMPOSITES RESEARCH
(2021)