Article
Chemistry, Physical
Jingge Ju, Jiali Shi, Meng Wang, Liyuan Wang, Bowen Cheng, Xixi Yu, Yinghui Cai, Shuaishuai Wang, Libin Fang, Weimin Kang
Summary: A high-performance proton exchange membrane was prepared by incorporating an interconnected PMIA nanofiber@ZIF-8 network into Nafion solution, exhibiting excellent properties including high proton conductivity and low methanol permeability, with potential application in direct methanol fuel cells. The hybrid membrane's superior performance may be attributed to its interconnected structure, high specific surface area, and active chemical bonds of ZHNFs, which provide consecutive conduction paths for protons and enhance proton transfer efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Amirsalar Bagherzadeh, Mahdi Tohidian, Yeganeh Mollamohammadi Sadafi, Amirsaeed Shamsabadi, Hesam Makki
Summary: Polyelectrolyte membranes (PEMs) containing chitosan and Nafion were prepared for DMFC application. The addition of Nafion increased the Tg and decreased the crystallinity of the chitosan matrix due to the interaction between -SO3H groups in Nafion and -NH2 groups in chitosan. The PEMs with higher Nafion loading weight exhibited higher proton conductivity and methanol permeability, and the membrane with 25 wt% Nafion showed comparable selectivity parameter to neat Nafion. A maximum power density of 39 mW cm(-2) was achieved for this membrane in DMFC performance test.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Review
Polymer Science
Gowthami Palanisamy, Tae Hwan Oh, Sadhasivam Thangarasu
Summary: A direct methanol fuel cell (DMFC) is an excellent energy device that converts methanol to energy with high efficiency. Commercial membranes for DMFCs are expensive and have high methanol permeability, but novel developments using cost-effective cellulose-based materials have improved performance. In this review, the advances and utilization of different cellulose materials as proton-exchange membranes (PEMs) for DMFCs are discussed, including cellulose derivatives and composites with inorganic additives.
Article
Chemistry, Inorganic & Nuclear
J. Antonio Zarate, Eduardo Gonzalez-Zamora, Ilich A. Ibarra, Gabriela Diaz
Summary: By confining a small amount of methanol within its pores, the SO2 capture performance of MIL-53(Al)-TDC was improved (MeOH@MIL-53(Al)-TDC). Compared to fully activated MIL-53(Al)-TDC, MeOH@MIL-53(Al)-TDC exhibited a 39% higher SO2 capture capacity. Monte Carlo simulations revealed that this enhancement is attributed to the increased degree of confinement of SO2 molecules resulting from the formation of clusters (methanol molecules) near the mu-OH groups.
DALTON TRANSACTIONS
(2022)
Article
Green & Sustainable Science & Technology
Fatima C. Teixeira, Antonio P. S. Teixeira, C. M. Rangel
Summary: In this study, new doped Nafion membranes were prepared by casting with AzBPs as dopants. The proton conduction properties of the modified membranes were significantly improved compared to the reference Nafion membrane. The membrane with AzBP1 as dopant showed the best proton conductivity.
Article
Engineering, Environmental
Dipeshkumar D. Kachhadiya, Z. V. P. Murthy
Summary: A novel strategy of adding deep eutectic solvents (DES) into the polymer matrix was developed to overcome the low compatibility issue. Choline chloride and ethylene glycol DES mixture was used to encapsulate MIL-53(Fe) and incorporate it into the chitosan polymer matrix. The DES@MIL-53(Fe)/CS membrane showed the best separation performance, with the highest total flux and methanol selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Biochemistry & Molecular Biology
Ekaterina Yu. Safronova, Daria Yu. Voropaeva, Dmitry V. Safronov, Nastasia Stretton, Anna V. Parshina, Andrey B. Yaroslavtsev
Summary: This study investigates the properties of Nafion dispersions in different ionic forms and dispersing liquids. The use of perfluorosulfonic acid dispersions in aprotic polar solvents is shown to result in membranes with optimal polymer morphology, good selectivity, and transport properties.
Article
Engineering, Chemical
Xiaoyu Lu, Yanzi Geng, Zhiqian Jia, Yu Yang, Haiou Huang, Yi Men, Li'An Hou
Summary: NH2-MIL-53 membranes were prepared on modified PVDF ultrafiltration membranes by solvothermal method for nanofiltration. The study showed that the membrane structure and performance could be tuned by reaction conditions, and NH2-MIL-53/PVDF membranes exhibited high rejection and permeability, making them suitable for dye separations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Seung-Young Choi, Muhammad Mara Ikhsan, Kyeong Sik Jin, Dirk Henkensmeier
Summary: The physicochemical properties of PFSA polymers are closely related to their nanostructure, but the accurate morphology at the nanoscale is still controversial. This study focuses on the crystalline domain and ionic domain of two PFSA membranes using small-angle X-ray scattering. The hydration process significantly alters both domains, and the behavior depends on the side-chain length of the membranes.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Ji Won Heo, Liangliang An, Min Soo Kim, Duck Hyun Youn, Yong Sik Kim
Summary: A novel zwitterion-substituted lignin (ZL) was synthesized and used to fabricate proton exchange membranes. The incorporation of ZL into Nafion membranes improved their ion exchange capacity, thermal stability, and hydrophilicity. The zwitterionic moieties of ZL enhanced proton transport ability, and ZL also improved the chemical durability and oxidation stability of Nafion membranes, showing potential for fuel cell applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Applied
Guizhi Yan, Xianjin Qi, Heng Wang, Jiahao Shi
Summary: An effective magnetic composite material was fabricated for removing arsenic from wastewater with high adsorption capacity and selectivity. Experimental and thermodynamic studies revealed the adsorption mechanism and circulation performance of the composite material.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Lei Liu, Chao Wang, Zhenfeng He, Duo Pan, Binbin Dong, Sravanthi Vupputuri, Zhanhu Guo
Summary: Nafion/APNB membranes were prepared by introducing APNB architecture, increasing hydrophobic domains, and forming ordered water channels to improve ion conductivity; Nafion/APNB-2.5% membrane has the highest swelling ratio, while Nafion/APNB-5% membrane has the highest power density.
JOURNAL OF POWER SOURCES
(2021)
Review
Chemistry, Physical
Shahbaz Ahmad, Tahir Nawaz, Asghar Ali, Mehmet Fatih Orhan, Ayesha Samreen, Arunachala M. Kannan
Summary: Proton exchange membrane fuel cells are considered efficient and clean energy conversion devices, but their high manufacturing cost remains a major barrier to their general acceptance and commercialization. Lowering the cost of the electrolyte and catalyst is the main strategy for reducing fuel cell cost. The development of low-cost and high-performance electrolyte membranes is a top priority.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Qing Dai, Feng Xing, Xiaonan Liu, Dingqin Shi, Congzhi Deng, Ziming Zhao, Xianfeng Li
Summary: Polybenzimidazole (PBI) membranes are found to have amphoteric ion transport characteristics and an ultrastrong Donnan effect, showing excellent performances in both acidic and alkaline flow batteries.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Polymer Science
Ekaterina Yu. Safronova, Daria Yu. Voropaeva, Anna A. Lysova, Oleg V. Korchagin, Vera A. Bogdanovskaya, Andrey B. Yaroslavtsev
Summary: By changing the preparation and pretreatment conditions, the properties of Nafion membranes can be optimized. In this study, a Nafion-NMP membrane with higher conductivity and comparable hydrogen permeability was obtained by casting from a Nafion dispersion in N-methyl-2-pyrrolidone. The increase in conductivity is attributed to the optimization of the Nafion-NMP microstructure, which improves the connectivity of the pores and channels system. This leads to an increased capacity of the membrane electrode assembly compared to a commercial Nafion (R) 212 membrane.
Article
Engineering, Manufacturing
Yuan Chai, Xiao-Bo Chen, Jesse A. Estoque, Nick Birbilis, Qinghua Qin, Tomas Ward, Paul N. Smith, Rachel W. Li
Summary: This study analyzed the anatomical asymmetry of pelvic models and found that symmetrical analysis and deviation color maps can assist with implant selection and customized design, improving the accuracy and overall standard of 3D printed implants.
3D PRINTING AND ADDITIVE MANUFACTURING
(2023)
Article
Materials Science, Multidisciplinary
Qiushi Deng, Steffen Jeschke, Billy J. Murdoch, Sabine Hirth, Philipp Eiden, Jan N. Gorges, Patrick Keil, Xiao-Bo Chen, Ivan Cole
Summary: This study investigated the inhibitory behavior of 2-amino-4-methyl-thiazole (2AT-Me) on electro-galvanized steel in neutral NaCl solution. The results showed that 2AT-Me acted as a mixed-type inhibitor with high efficiency, forming a protective film with a multi-layered structure.
Article
Electrochemistry
Lei Liu, Shuai Dong, Fenghua Wang, Xiao-Bo Chen, Jie Dong
Summary: A simple hydrothermal method was used to fabricate a layered double hydroxides (LDHs) film with a uniform structure and superior corrosion protection on magnesium (Mg) alloys. The morphology characterization showed that high solution pH facilitated the production of LDHs nanosheets with dense and fine features, and the uniformity of the films depended on the solution pH. The film fabricated at pH of 13.5 exhibited the best corrosion resistance.
ELECTROCHIMICA ACTA
(2022)
Article
Electrochemistry
Mohd Rafiuddin Jakeria, Rou Jun Toh, Xiao-Bo Chen, Ivan S. Cole
Summary: Organic corrosion inhibitors have been proven to be effective in mitigating corrosion by rapidly adsorbing and forming protective films on metal surfaces. This article investigates the adsorption and degradation of a specific organic corrosion inhibitor, 2-mercaptobenzimidazole, on AA6061 in a sodium chloride solution. The results show that the inhibitor forms a protective film that reduces corrosion caused by Fe and Si-rich intermetallic particles. However, the film gradually degrades over time, leading to a decrease in inhibition efficiency.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Guangli Bi, Siqi Chen, Jing Jiang, Yuandong Li, Tijun Chen, Xiao-Bo Chen, Duyao Zhang, Dong Qiu, Mark Easton
Summary: The effects of laser surface remelting (LSR) on microstructure and corrosion properties of as-cast Mg-12Dy-1.1Ni alloy were investigated. LSR treatment resulted in grain refinement and the formation of a continuous network of 18R-LPSO phase on dendrite boundaries, leading to improved corrosion resistance of the alloy.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Metallurgy & Metallurgical Engineering
Xue-mei Wang, Xiao-li Fan, Mei-qi Zeng, Chang-yang Li, Lan-yue Cui, Xiao-bo Chen, Yu-hong Zou, Zhen-lin Wang, Rong-chang Zeng
Summary: In this study, a Schiff base-induced calcium phosphate coating was successfully prepared, which exhibited improved degradation resistance and corrosion protection compared to the traditional pure calcium phosphate coating. The Schiff base coating also had a larger thickness than the pure calcium phosphate coating.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Kai Rui Wang, Asma Lamin, Amy J. J. Spark, Liam Ward, Ivan Cole, Xiao-Bo Chen
Summary: The traditional aqueous electrolyte used for studying soil-related corrosion in laboratories does not accurately represent the physical features of soil. This article introduces a semi-solid agar system that can replicate the structure of soil for corrosion study. The results show that the agar system has similar oxygen diffusion characteristics to soil, weakening the cathodic activity of steel specimens and leading to different corrosion characteristics compared to aqueous electrolytes. The solid nature of agar outperforms aqueous electrolytes in simulating soil-related corrosion responses at the laboratory scale.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Metallurgy & Metallurgical Engineering
Chang-Jian Yan, Bo Guan, Yun-Chang Xin, Ling-Yu Zhao, Guang-Jie Huang, Rui Hong, Xiao-Bo Chen, Paul K. Chu
Summary: The dual twin structure in a biomedical Mg-6Zn-0.5Zr alloy can eliminate tension-compression yield asymmetry and effectively reduce corrosion anisotropy.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Shengyuan Wang, Lijia Chen, Xiao-Bo Chen, Haoyu Zhang, Ge Zhou
Summary: The microstructure of the Ti-4Al-6Mo-2V-5Cr-2Zr alloy is highly sensitive to aging temperature and time, which directly affects its mechanical properties. The effects of aging parameters on the microstructure and tensile properties of the alloy were investigated by varying the aging temperature from 520 to 640°C and time from 2 to 8 hours. It was found that the volume fraction and shape of the secondary α phase (as) in the β matrix changed with aging temperature and time, and a higher volume fraction of the as phase resulted in higher strength. The strengthening mechanism of the as phase was also clarified through SEM and TEM observations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Qiushi Deng, Steffen Jeschke, Mohd Rafiuddin Jakeria, Paul White, Sabine Hirth, Philipp Eiden, Jan N. Gorges, Xiao-Bo Chen, Patrick Keil, Ivan Cole
Summary: This work develops a synergistic inhibiting strategy using two distinct aromatic heterocyclic ring systems to protect electro-galvanised steel against aqueous corrosion. The formulated mixture shows an enhanced inhibitory efficiency of 96% after 7-day immersion in a NaCl solution. Surface and electrolyte chemistry analysis reveals a two-step process in the growth of the protective layer, reflecting the sequential responses of each inhibitor's mode-of-action. This synergistic inhibition formulation offers potential to modify corroded ZE surfaces.
Article
Materials Science, Multidisciplinary
Chuntian Yang, Hao Feng, Xiaobo Chen, Yu Han, Huabing Li, Dake Xu, Fuhui Wang
Summary: Corrosion-resistant high nitrogen high entropy alloys (HEAs) exhibit an inhibitory effect on pitting corrosion caused by sulfate reducing bacterium Desulfovibrio vulgaris. Addition of nitrogen decreases pitting sensitivity and strengthens the passive film.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Minggang Xie, Chunguang Li, Siqi Zhang, Zhe Zhang, Yuxin Li, Xiao-Bo Chen, Zhan Shi, Shouhua Feng
Summary: The development of fast charging materials is crucial for large-scale and sustainable energy storage. This study presents a novel Bi2Se3-ZnSe heterostructure as an excellent fast charging material for Na+ storage. The introduction of ultrathin Bi2Se3 nanoplates with topological insulator metallic surfaces greatly reduces charge transfer resistance and improves overall electrical conductivity. The composite exhibits excellent high-rate performance and electrochemical stability, making it a promising alternative for further exploration of topological insulators and advanced heterostructures.
Article
Chemistry, Multidisciplinary
Xi Sun, Jiayu Guan, Xue Wang, Xiaofeng Li, Jifu Zheng, Shenghai Li, Suobo Zhang
Summary: A novel partially ordered phosphonated ionomer (PIM-P) was designed as the catalyst binder to improve mass transport in proton exchange membrane fuel cells (PEMFCs). The rigid and contorted structure of PIM-P forms a robust gas transmission channel and provides stable proton conduction sites. The membrane electrode assembly with PIM-P ionomer exhibits a significantly higher peak power density compared to commercial or porous catalyst binders at 160°C under an H2/O2 condition.
ACS CENTRAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Siqi Zhang, You-Liang Zhu, Siyuan Ren, Chunguang Li, Xiao-Bo Chen, Zhenjiang Li, Yu Han, Zhan Shi, Shouhua Feng
Summary: In this study, a nitrogen-rich covalent organic framework (TB-COF) was designed as an aqueous anode for calcium ion batteries, addressing the challenges of organic materials' solubility and low electronic conductivity. TB-COF demonstrated a high reversible capacity and long cycle life, with a validated redox mechanism and identification of a novel active site for calcium ion storage.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Qiushi Deng, Jose Maria Castillo-Robles, Ernane de Freitas Martins, Pablo Ordejon, Jan-Niclas Gorges, Philipp Eiden, Xiao-Bo Chen, Patrick Keil, Ivan Cole
Summary: This study investigates the distinct adsorption behaviors induced by different chemical functionalities on the corrosion of zinc steel. The results show that both inhibitors exhibit corrosion inhibition effects on zinc steel through different mechanisms.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)