Article
Chemistry, Physical
B. Ruiz-Camacho, J. A. Palafox-Segoviano, P. J. Perez-Diaz, A. Medina-Ramirez
Summary: Pt supported on various materials were synthesized using sonication without special capping agent or thermal treatment, and evaluated for oxygen reduction reaction (ORR) in acid medium. The highest dispersion of Pt particles was observed on the samples supported on GO materials, with Pt/GO-C composite exhibiting significantly higher specific and mass activity for ORR compared to conventional Pt/C catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
C. D. Jaimes-Paez, E. Morallon, D. Cazorla-Amors
Summary: Graphene-based materials were synthesized by electrochemical exfoliation method. Pt nanoparticles were incorporated into the graphene-based material to achieve high dispersion and distribution. The catalyst showed excellent activity, stability, and selectivity in oxygen reduction reaction and hydrogen evolution reaction, outperforming commercial Pt/C catalyst.
Article
Nanoscience & Nanotechnology
Chenzhao Li, Liang Song, Xueru Zhao, Kotaro Sasaki, Jian Xie
Summary: The study reveals that by using polybenzimidazole-grafted Vulcan XC72 carbon as the catalyst carbon support and nitriding PtNi catalyst, PtNiN/XC72-PBI catalysts with excellent performance and stability can be developed, meeting the 2020 targets for fuel cell catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Chenzhao Li, Liang Song, Xueru Zhao, Kotaro Sasaki, Jian Xie
Summary: PtM alloys are considered as promising catalysts for proton exchange membrane fuel cells. However, their performance and durability still face challenges. This study proposes a synergistic approach of functionalizing the carbon support and nitrogen doping the catalyst structure to improve catalyst activity and stability. The developed catalyst shows excellent performance and stability.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hongguan Li, Shuanlong Di, Ping Niu, Shulan Wang, Jing Wang, Li Li
Summary: By designing the catalyst Fe/Zn-N-C based on theoretical screening, a unique half-metallic electronic structure is achieved, resulting in enhanced O-2 capture and bonding. The catalyst exhibits impressive ORR activities and durability in both acidic and alkaline media.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Ehsan Zarmehri, Ragle Raudsepp, Mati Danilson, Andris Sutka, Ivar Kruusenberg
Summary: Non-noble metal catalysts (NNMCs) are a promising alternative to platinum-based catalysts for hydrogen fuel cells and metal-air batteries. This study presents a low-cost and simple method to fabricate inexpensive and durable ORR catalysts. By using vanadyl phthalocyanine, a carbon nanotube supported catalyst was synthesized with competitive characteristics to platinum catalyst. Physical characterization techniques and electrochemical testing were employed to analyze the catalysts.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
S. Vijayalakshmi, E. Elanthamilan, J. Princy Merlin, I. Sharmila Lydia
Summary: In this study, a silver nanoparticle-encapsulated CoFe2O4@reduced graphene oxide composite was prepared and exhibited remarkable plasmonic photocatalytic activity. The composite also showed excellent electrochemical properties in aqueous KOH electrolyte, indicating promising potential for photocatalysis and energy storage applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Yue Zhou, Jiafeng Yuan, Ruoyu Dong, Yixiao Fu, Jianbin Zhou, Hengfei Qin
Summary: Carbon fiber-derived materials, as a new type of functional material, show promise in electrocatalysis. In this study, waste lignin from the pulping industry was used to prepare lignin-based functional materials through electrospinning. The resulting nanocomposite fiber exhibited anisotropic network structure and improved conductivity, providing a convenient channel for electron transmission. The prepared LFC-Ni/Co showed good catalytic activity for both ORR and OER, suggesting its potential application in electrocatalysis.
Article
Chemistry, Multidisciplinary
Peng Yin, Shan-Cheng Shen, Le-Le Zhang, Xu-Sheng Zheng, Ming Zuo, Yan-Wei Ding, Hai-Wei Liang
Summary: This study demonstrates a high-temperature SMSI between platinum and sulfur-doped carbon (S-C) supports, which helps suppress platinum sintering and enhance the stability and electrocatalytic performance of Pt/S-C catalysts.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Review
Biochemistry & Molecular Biology
Vera Alexandra Spirescu, Cristina Chircov, Alexandru Mihai Grumezescu, Bogdan Stefan Vasile, Ecaterina Andronescu
Summary: The development of drug-resistant microorganisms poses a critical challenge to modern medicine and drug discovery, necessitating innovative strategies to combat global health issues. Metal and metal oxide nanoparticles have shown promise as effective nanobiocides and nanocarriers for antimicrobial drugs, offering potential solutions to combat infections.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Chemistry, Physical
Hangxuan Li, Ge Li
Summary: With the increasing demand for sustainable energy, research on electrocatalysis in clean energy devices has gained more attention. This review summarizes the use of novel palladium-based nanomaterials for multifunctional electrocatalysis in acidic and alkaline media, specifically for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The challenges and possible strategies for improving the activity and stability of Pd-based catalysts are also discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Rabia Naeem, Saba Afzal, Muhammad Adil Mansoor, Khadija Munawar, Bibi Sherino, Riaz Ahmed
Summary: The deposition of platinum nanoparticles on a WO3-C support improves the bandgap and electrochemical behavior of the catalysts for the oxidation of methanol. The Pt/WO3-C catalyst has higher specific surface area, peak current, and exchange current compared to Pt/C and Pt/WO3. The heterogeneous constant for methanol oxidation is 10 and 3 times higher for Pt/WO3-C than for Pt/C and Pt/WO3, respectively. Adding WO3 to the support enhances the optical properties, efficiency, and durability of Pt/C.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Rajabathar Jothi Ramalingam, Prabhakarn Arunachalam, Mabrook S. Amer, Zeid A. AlOthman, Abdullah G. Alanazi, Murefah M. Al-Anazy, Hamad A. Al-Lohedan, Wasmiah Mohammed Dahan
Summary: In this study, pristine silver nanoparticles and silver-graphene oxide nanoparticles were incorporated into Bismuth doped manganese oxide nanotubes using an ultra-sonication deposition method. The resulting composite materials showed improved thermal stability and nanotube formation, with nanotube diameters ranging from 10-25 nm and lengths ranging from 40-50 nm, as confirmed by high resolution transmission electron micrographs. The band gap values of the prepared composites were also calculated, with the Ag-Bi-MnOx/GO composite having a bandgap value of 1.93 eV and Bi-MnOx having a value of 2.47 eV. Further analysis showed that the silver nanoparticle-graphene oxide modified Bi-MnOx composite exhibited enhanced electrochemical activity for clean energy technology applications.
Article
Chemistry, Analytical
Saikat Banerjee, Gymama Slaughter
Summary: A glucose abiotic biofuel cell was developed using gold nanoparticles ink printed electrodes on bacterial nanocellulose, with a colloidal platinum anode and silver oxide/multiwalled carbon nanotube nanocomposite cathode. The cell exhibited high open circuit voltage, short circuit current density, and maximum power density at different glucose concentrations, showing good performance in serum with glucose.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Jeonghoon Lim, Kihyun Shin, Junu Bak, JeongHan Roh, SangJae Lee, Graeme Henkelman, EunAe Cho
Summary: This study improves the ORR activity and stability of PtNi octahedral nanoparticles by incorporating a novel dopant, In. Computational screening and experimental validation show that In-doped PtNi/C exhibits superior ORR performance and stability compared to PtNi/C and Pt/C, attributed to the creation of a new active site and blocking Ni diffusion to the surface.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Huiyan Zeng, M'hamed Oubla, Xuepeng Zhong, Nicolas Alonso-Vante, Fei Du, Yu Xie, Yunhui Huang, Jiwei Ma
Summary: By introducing oxygen vacancies and fluorine anions, the catalytic activity for oxygen evolution reaction (OER) was enhanced. Theoretical calculations were consistent with experimental results, providing a pathway for designing new defective fluorinated oxides.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Electrochemistry
Miaomiao Wu, Yi Zhang, Renyuan Zhang, Jiwei Ma, Nicolas Alonso-Vante
Summary: MOF(Ni/Fe) nanosheets were grown in situ vertically on three-dimensional (3D) nickel foam (NF). To induce a chemical coupling effect, defective CeO2-x nanoparticles (NPs) were chemically decorated on the surfaces of the MOF(Ni/Fe)/NF nanosheets. This phenomenon confirmed a positive effect for oxygen evolution in alkaline medium.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Applied
Jie Liu, Chenjie Lou, Jipeng Fu, Xuan Sun, Jingrong Hou, Jiwei Ma, Yongjin Chen, Xiang Gao, Ligang Xu, Qi Wei, Mingxue Tang
Summary: In this study, Fe/Co co-doped NiS with N-based carbon derived from trimetallic Prussian blue analogue was designed and synthesized. The material exhibited excellent electrochemical performance, showing high capacity and long cycle life for both lithium-ion batteries and sodium-ion batteries. The electrochemical behaviors were found to be manipulated by both diffusion and pseudocapacitance processes.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Jiabao Wang, Zhenkai Ji, Xiuzhen Xu, Tiantian Chen, Bo Chen, Guohua Gao, Jiwei Ma, Xipeng Nie, Xiaobin Xu
Summary: This work presents a hybrid lithographic method for growing TiO2 nanorod arrays with arbitrary patterns. The method combines top-down soft lithography and bottom-up hydrothermal approach. The morphology and density of the nanorods can be controlled by adjusting the precursor concentration, reaction time, temperature, and patterns. The work provides a new strategy for the low-cost and facile preparation of patterned TiO2 nanorod arrays and has potential applications in micro-nano-optoelectronic devices and other fields.
Article
Materials Science, Multidisciplinary
Yun-Feng Wu, Ji-Wei Ma, Yun-Hui Huang
Summary: Designing highly active and durable electrocatalysts for oxygen reduction reaction (ORR) is crucial for proton exchange membrane fuel cells. In this study, Pt-Co catalysts were synthesized using a facile soft-chemistry method, and they exhibited excellent activity and durability. Pt3Co/C showed significantly improved ORR activity and durability compared to commercial Pt/C.
Article
Chemistry, Multidisciplinary
Shasha Guo, Toshinari Koketsu, Zhiwei Hu, Jing Zhou, Chang-Yang Kuo, Hong-Ji Lin, Chien-Te Chen, Peter Strasser, Lijun Sui, Yu Xie, Jiwei Ma
Summary: This study stabilizes cation-deficient magnetite by incorporating Mo4+-ions into its structure and improves its capacity fade and rate performance. The cationic vacancies in the defective electrode provide active sites for storing lithium ions and lower energy barriers for ion migration. Experimental results confirm that this defective oxide enables fast lithium intercalation. This study provides a valuable strategy for the development of high-performance lithium-ion batteries.
Article
Multidisciplinary Sciences
Yiming Zhu, Jiaao Wang, Toshinari Koketsu, Matthias Kroschel, Jin-Ming Chen, Su-Yang Hsu, Graeme Henkelman, Zhiwei Hu, Peter Strasser, Jiwei Ma
Summary: In this study, iridium single atoms incorporated cobalt oxides were successfully prepared by a mechanochemical approach. The catalyst showed significantly enhanced performance in acidic conditions. The mechanism and performance optimization principles were revealed through operando X-ray absorption spectroscopy and theoretical calculations, providing new insights for designing active, stable, and cost-effective catalysts for the acidic oxygen evolution reaction.
NATURE COMMUNICATIONS
(2022)
Review
Electrochemistry
Nicolas Alonso-Vante
Summary: This paper reviews the electrochemical properties of platinum-based nanoalloys, focusing on electrocatalytic materials generated via the carbonyl chemical route. The effects of segregation in these bimetals on the hydrogen oxidation and oxygen reduction reactions in the alkaline medium are investigated. The study reveals the importance of Pt adsorbate on the kinetics of HOR and ORR.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Electrochemistry
D. Mamedov, S. Zh. Karazhanov, N. Alonso-Vante
Summary: Nanoparticles of CeO2 with different morphologies were synthesized and compared with commercial ceria particles. The defectivity of CeO2 was found to influence its absorption edge energy and photocatalytic performance under narrow band UV-light condition. The surface charge condition of CeO2 particles played a crucial role in the decolorization of methylene blue dye, and the cubic-morphology CeO2 showed better performance despite its low BET surface area. However, the photopotential of ceria electrodes was lower than that of TiO2, resulting in a worse photocatalytic performance of CeO2 compared to TiO2.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zhenglu Zhu, Jie Ji, Xiaoqun Qi, Yongsheng Ji, Zhikang Liu, Weichen Du, Yujun Pan, Dan Yang, Jiwei Ma, Long Qie, Yunhui Huang
Summary: Recruiting anions from electrolyte additives into the lithium ion solvation structure is a promising strategy for the construction of long-lifespan Li-metal batteries (LMBs). However, inadequate understanding of the anion-involved Li+ solvation hinders the finding of new anion additives. The effects of the newly-introduced NO3- anion on the Li+ solvation structure are investigated, showing that it reduces the electrostatic potential of the Li+ solvation cluster, especially for solvated solvents, thus improving electrolyte stability against the Li anode. The anion selection coefficient, based on the anion size to the binding energy toward Li+, is proposed as a new selection principle, leading to the discovery of the beneficial hexafluorosilicate anion for LMBs.
ADVANCED ENERGY MATERIALS
(2023)
Review
Green & Sustainable Science & Technology
Yuan Wang, Haihong Zhong, Weiting Yang, Yongjun Feng, Nicolas Alonso-Vante
Summary: This review summarizes the recent advances in the production of hydrogen peroxide (H2O2) via two-electron (2e-) oxygen reduction reaction (ORR). It discusses the catalytic mechanisms, pH and porous structure effects, selectivity assessment methods, biomass-derived carbon-based catalyst development, and electrochemical device designs. The use of self-doped heteroatomic carbon-based electrocatalysts derived from abundant and cheap biomass has emerged as a promising and environmentally friendly approach for on-site H2O2 production.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zhenkai Ji, Min Sun, Tiantian Chen, Xinyi Shen, Xiuzhen Xu, Yan Zhong, Dadong Wang, Jiwei Ma, Bo Chen, Zhiguo Yi, Xiaobin Xu
Summary: Here, we present a simple method that combines top-down patterning transfer and bottom-up nanorod growth to fabricate large-area and ordered TiO2 nanorod arrays. Pre-crystallization seeding can be patterned with nanostructured morphologies through interfacial tension-driven precursor solution scattering on various types and period templates. This versatile strategy shows great operability in complex substrate morphologies and is applicable to capillary force-driven interfacial patterns. Customized patterned lithographic templates containing English words, Arabic numerals, and Chinese characters are utilized to verify the applicability and controllability of this hybrid method. In summary, this work provides a low-cost and facile approach for preparing hydrothermally growable metal oxide (e.g., ZnO and MnO2) nanostructures, which have potential applications in microelectronic devices, photoelectric devices, energy storage, and photocatalysis.
Article
Materials Science, Multidisciplinary
Yuwei Chen, Tengrui Wang, Huaican Chen, Wang Hay KAn, Wen Yin, Zhenyou Song, Chen Wang, Jiwei Ma, Wei Luo, Yunhui Huang
Summary: High-entropy ceramics (HECs) have shown great potential in designing materials with tailored properties due to their high configurational entropy and elemental synergies. However, the arrangement of multiple elements in the structure and their influence on bond length regulation remain unclear. In this study, a medium-entropy garnet-structured electrolyte Li6La3Zr0.5Hf0.5Ta0.5Nb0.5O12 (ME-LLZO) is synthesized and its short-range structure is elucidated through supercell calculations and neutron pair distribution function (PDF) refinement. Observations include extended bottleneck size, elongated Li-O bond length, and local clustering of certain sites. The differences between the multiple cations inevitably affect the short-range structure, providing insights for future exploration of HEC-based solid-state electrolytes.
Review
Nanoscience & Nanotechnology
Yiming Zhu, Jingyao Wang, Jiwei Ma
Summary: Single-atom catalysts (SACs) are cost-effective and have excellent performance for clean energy conversion. While carbon is commonly used as a support for SACs, non-C materials with flexible properties and unique metal-support interactions have gained attention for loading isolated metal atoms. This review provides a comprehensive summary of current research on non-C-supported SACs for green energy conversion, including synthesis methods, metal-support interactions, applications, in situ/operando approaches, and challenges in designing promising non-C-supported SACs.
Review
Chemistry, Physical
Luis Alberto Estudillo-Wong, Claudia Guerrero-Barajas, Jorge Vazquez-Arenas, Nicolas Alonso-Vante
Summary: Microbial fuel cell (MFC) is a sustainable technology that combines biotechnology and electrochemistry to develop applications in wastewater treatment and energy production. However, current MFC devices face limitations in terms of performance, efficiency, durability, cost, and competitiveness against other technologies. This study critically examines the synthesis of nD nanomaterials, methods of assembling biofilm-based electrode material, physicochemical characterizations, electrochemistry of materials, and electron transfer mechanisms to enhance the interaction between microorganisms and electrodes. The findings are expected to pave the way for the large-scale adoption of MFC technology in untapped markets.
