Article
Chemistry, Physical
Shanmugam Vignesh, Haekyoung Kim
Summary: The development of stable electrocatalysts for the catalysis of the electrochemical water-splitting process has gained significant interest. In this study, a simple interfacial method is proposed to fabricate a novel molybdenum-substituted Co3O4 with N-doped reduced graphene oxide composite, which exhibits improved electrocatalytic performance and durability for the oxygen evolution reaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Biao Deng, Jie Liang, Luchao Yue, Tingshuai Li, Qian Liu, Yang Liu, Shuyan Gao, Abdulmohsen Ali Alshehri, Khalid Ahmed Alzahrani, Yonglan Luo, Xuping Sun
Summary: This research fabricates CoFe-layered double hydroxide (LDH) nanowire arrays on graphite felt (CoFe-LDH/GF) through a hydrothermal method, producing a high-performance non-noble-metal oxygen evolution reaction (OER) electrocatalyst with excellent catalytic activity, low overpotential, and electrochemical durability, providing new possibilities for the development of attractive catalyst supports for oxygen evolution applications.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Gil-Ryeong Park, Seung Geun Jo, Anuraj Varyambath, Jeonghyun Kim, Jung Woo Lee
Summary: Nitrogen-doped reduced graphene oxide with Pd4.7Ru nanoparticles showed efficient catalytic activity in oxygen reduction reaction, with pyridinic nitrogen atoms acting as anchoring sites for particle bonding. The optimal composition of Pd and Ru at 4.7:1 ratio exhibited high durability and excellent ORR activity, making it a potential candidate for fuel cell applications.
Article
Energy & Fuels
Muhammad Bilal, Rashid, Amna Altaf, Nadeem Baig, Ghayoor Abbas Chotana, Raja Shahid Ashraf, Shahid Rasul, Ayman Nafady, Anwar Ul-Hamid, Manzar Sohail
Summary: In this study, a preparation method for hexagonal cobalt selenide as an electrocatalyst for oxygen evolution reaction is reported. The catalyst exhibits unique porous dendrimeric crystalline network and large electrochemical surface area, showing excellent electrochemical activity and stability.
Article
Chemistry, Physical
Zhixiang Cui, Jixin Lin, Jiahui Wu, Jiaqi Yu, Junhui Si, Qianting Wang
Summary: A novel nanocomposite of N-doped CoP nanoparticles embedded in porous carbon nanofibers has been synthesized, showing outstanding electrocatalytic properties for oxygen evolution reaction. This material has the potential for cost-effective and high-efficiency applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Fatima Nasim, Hassan Ali, Amir Waseem, Muhammad Amtiaz Nadeem, Muhammad Arif Nadeem
Summary: A non-noble metal-based catalyst with comparable activity to conventional noble metal catalysts is successfully synthesized through a simple synthetic strategy. Acid treatment significantly enhances the electrocatalytic activity, and the catalyst demonstrates excellent durability and methanol tolerance. The enhanced activity is attributed to the synergistic effect of the carbon matrix and encapsulated nanoparticles.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Biao Zhang, Yanan Wang, Keru Cao, Yuheng Zhang, Yuxiao Xie, Chunxia Liu, Qi Wang
Summary: Nanostructures derived from metal-organic frameworks have shown great potential as efficient electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), due to their three-dimensional porous carbon architecture and distinctive coordination environment. In this study, tiny cobalt nanoparticles were uniformly embedded in N-doped porous carbon carriers grown on carbon fibers, resulting in enhanced electrocatalytic activity and long-term durability. The as-synthesized catalysts exhibited minor overpotentials for HER and OER, achieving high current densities.
Article
Chemistry, Multidisciplinary
Yani Hua, Xiong Yin, Jiamei Liu, Zhan Gao
Summary: This study presents the development of a novel N-doped mesoporous carbon supported Co nanoparticle (Co/NC) electrocatalyst for the oxygen reduction reaction (ORR). The Co/NC catalyst exhibits excellent ORR activity with high redox peak potential, onset potential, and half-wave potential, as well as long-term stability and strong methanol tolerance. The unique strong metal-support interaction (SMSI) between Co nanoparticles and the NC substrate is attributed to the outstanding catalytic performance of Co/NC, which is enabled by prompt electron transfer and a large specific surface area.
Article
Chemistry, Physical
Hongwei Shi, Xiong Yin, Yani Hua, Zhan Gao
Summary: Developing non-noble metal electrocatalysts is crucial for the large-scale application of fuel cells. In this study, three-dimensional N-doped carbon supported MnO nanoparticles were prepared and exhibited excellent catalytic activity and stability for oxygen reduction reaction (ORR).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Meng Yue, Xun He, Shengjun Sun, Yuntong Sun, Mohamed S. Hamdy, Mhamed Benaissa, Alsamani A. M. Salih, Jun Liu, Xuping Sun
Summary: Here, we present a Co-doped Ni3S2 nanosheet array on Ni foam (Co-Ni3S2/NF) as an efficient OER electrocatalyst for seawater. In alkaline conditions, Co-Ni3S2/NF requires a low overpotential of only 368 mV to drive 100 mA•cm(-2), which is superior to Ni3S2/NF (385 mV). Furthermore, it exhibits at least 50 hours of continuous electrolysis.
Article
Nanoscience & Nanotechnology
Jae-Hyung Wee, Seoyoon Shin, Doo-Won Kim, Changho Lee, Yoong Ahm Kim, Moo Whan Shin, Ki Ro Yoon, Sang Young Yeo
Summary: Activated carbons (ACs) are widely used as support materials for electrocatalytic applications due to their unique properties. However, the corrosive behavior of ACs leads to a decrease in the active surface area of supported catalysts, compromising their performance. Therefore, it is crucial to develop corrosion-resistant catalyst supports for sustainable electrocatalysis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemistry & Molecular Biology
Tongchang Liu, Xinmeng Hao, Jiaqi Liu, Pengfei Zhang, Jiaming Chang, Hong Shang, Xuanhe Liu
Summary: Two graphdiyne materials, GDY nanotube and nitrogen-doped GDY (NGDY) nanotube, were prepared via cross-coupling reactions on the surface of Cu nanowires. As metal-free catalysts, their electrocatalytic activities for ORR were demonstrated, with NGDY nanotube exhibiting superior performance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Lijuan Niu, Guohua Liu, Yifan Li, Jiawen An, Boyuan Zhao, Jingsu Yang, Dan Qu, Xiayan Wang, Li An, Zaicheng Sun
Summary: This study introduces a novel electrocatalyst consisting of CoNi alloy nanoparticles embedded in nitrogen-doped graphite carbon nanotubes, which demonstrates outstanding ORR performance in alkaline medium. The unique structure of the catalyst plays a key role in enhancing catalytic activity and stability.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Arti Maurya, Mahendra Yadav
Summary: Designing and developing low-cost and efficient transition metal-based electrocatalysts for electrochemical water splitting is a challenging task due to the use of costly noble metals as electrocatalysts. This study synthesized Mo-doped ferric oxide (MFO) by hydrothermal method and heat treatment, and characterized it using various techniques. The electrocatalytic properties of MFO and ferric oxide (FO) for water splitting in alkaline medium were compared with RuO2. MFO exhibited higher electrocatalytic activity for the oxygen evolution reaction (OER) and offered a large number of active sites and a high BET surface area.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Gen Li, Rui Gao, Zhongyu Qiu, Wei Liu, Yujiang Song
Summary: In this study, highly dispersed ruthenium nanoparticles were synthesized on nitrogen-doped carbon, showing excellent activity and durability for the hydrogen evolution reaction. The results suggest the potential application of this Ru/N-C catalyst in electrochemical water splitting.
Article
Electrochemistry
C. A. Campos-Roldan, N. Alonso-Vante
Summary: In this study, carbon-supported PtM (M = Cr, Co, Ni, Cu, Mo, Y, Sm, Gd) nanostructured materials were synthesized via the carbonyl complex chemical route, and it was found that PtNi/C and PtCo/C exhibited higher hydrogen evolution/oxidation activity in alkaline medium compared to the Pt/C benchmark. The presence of OHad (s) species acting as a bifunctional mechanism may have contributed to the enhanced HER/HOR activity on PtNi/C and PtCo/C.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Polymer Science
Cynthia Guerrero-Bermea, Sofia Vazquez-Rodriguez, Saul Sanchez-Valdes, Jorge Alonso Uribe-Calderon
Summary: This study reports the production of hybrid organoclays composed of Cloisite 20A and modified graphene oxide (r-mGO) at different proportions, and their effect on the properties of PP composites. The results show that the laminated hybrid material exhibited homogeneous intercalation of Cloisite 20A and r-mGO, resulting in a rigid polymeric composite with improved mechanical properties at low filler content.
Article
Engineering, Electrical & Electronic
Luis Santiago Solis-Mendez, Jose Martin Baas-Lopez, Daniella Esperanza Pacheco-Catalan, Jorge Alonso Uribe-Calderon
Summary: The study investigated the effect of PANI nanofibers content on the electrochemical properties of composites based on SnO2 nanoflakes. It was found that the composites exhibited higher specific capacitance and capacitance, with high coulombic efficiencies (> 90% after 5000 cycles). Furthermore, the capacitance of composites increased, and resistance to charge transfer decreased with the PANI content, showing a synergetic effect of the electrode materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(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
Physics, Condensed Matter
Karla Vega-Granados, Christine Canaff, Luis-Alberto Estudillo-Wong, Gabriel Alonso-Nunez, Juan Cruz-Reyes, Nicolas Alonso-Vante
Summary: The chemical reactivity of two different selenium precursors with nanoparticulated palladium affects the degree of selenization and the electrocatalysis of the oxygen reduction reaction. The different interactions and stability of Pd(x)Se(y) achieved with the Pd/C precursor depending on the selenium source were clearly revealed by surface electrochemistry and CO stripping in alkaline medium. The Se source also influenced the selectivity of the reduction product between H2O and H2O2, as well as the tolerance to the methanol oxidation reaction.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
J. David Zuluaga-Parra, Luis F. Ramos-deValle, Saul Sanchez-Valdes, Jose Roman Torres-Lubian, Oliverio S. Rodriguez-Fernadez, Ernesto Hernandez-Hernandez, Luciano da Silva, Jose Alberto Rodriguez-Gonzalez, Javier J. Borjas-Ramos, Sofia Vazquez-Rodriguez, Jorge A. Uribe-Calderon
Summary: Phosphorylated avocado seed can be utilized as a renewable biofiller for polymer composites with enhanced flame-retardant properties, exhibiting a significant reduction in peak heat release rate and total heat released. The chemical modification greatly improves the thermal stability of avocado seed, while maintaining similar tensile strength and modulus in bio-composites compared to LDPE/EVA blend.
FIRE AND MATERIALS
(2022)
Review
Chemistry, Physical
Jing Wang, Heng Kong, Haihong Zhong, Yu Jiang, Fei Guo, Nicolas Alonso-Vante, Yongjun Feng
Summary: The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are crucial half-cell reactions in energy storage and conversion devices, which require efficient and stable electrocatalysts due to their slow kinetics and large overpotential. Transition-metal-based LDHs and their derivatives have shown promising catalytic performance, and regulating the structure and coordination environment of active sites can greatly influence electrocatalytic behavior. Understanding the relationships between structural performance and chemical composition of LDHs-based electrocatalysts can lead to further rational design and optimization of high-performance materials.
Article
Polymer Science
Soledad Cecilia Pech-Cohuo, Hector Martin-Lopez, Jorge Uribe-Calderon, Nancy Guadalupe Gonzalez-Canche, Ivan Salgado-Transito, Alejandro May-Pat, Juan Carlos Cuevas-Bernardino, Teresa Ayora-Talavera, Jose Manuel Cervantes-Uc, Neith Pacheco
Summary: The properties of biological-chemical chitosan (BCh) films prepared from marine-industrial waste and a non-conventional Ramon starch (RS) were investigated. The blended films of BCh/RS with quercetin showed good thermal stability, improved antioxidant and antimicrobial activity. These films have potential applications as coating materials in food packaging.
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)
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)
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.
Article
Engineering, Biomedical
A. D. Abreu-Rejon, W. Herrera-Kao, A. May-Pat, A. Avila-Ortega, N. Rodriguez-Fuentes, J. A. Uribe-Calderon, J. M. Cervantes-Uc
Summary: Surface modification of Tecoflex SG-80A Polyurethane films using polyethylene glycol (PEG) chains resulted in improved surface properties. The PEG-grafted polyurethane extracts showed increased viability of osteoblasts but had no significant effect on fibroblasts. Lower PEG grafting densities promoted healthier cell morphology.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2022)
Article
Chemistry, Physical
Aurora A. Flores-Caballero, Arturo Manzo-Robledo, Nicolas Alonso-Vante
Summary: Boron-doped samples exhibited the best opto-electronic properties, while cerium-doped samples partially eliminated titania surface states but limited photogenerated charge separation, likely due to surface Ce3+/Ce4+ species. Substitutional effect of boron ions for O sites and interstitial sites was confirmed through XRD and XPS analyses.
Article
Chemistry, Inorganic & Nuclear
Xiao-Wei Song, Shuwei Zhang, Haihong Zhong, Yuan Gao, Luis A. Estudillo-Wong, Nicolas Alonso-Vante, Xin Shu, Yongjun Feng
Summary: FeCo bimetallic organic frameworks were fabricated by controlling the initial molar ratio of Fe3+/Co2+ ions. The resulting FeCo nanoalloys encapsulated in N-doped carbon nanotubes showed excellent ORR performance, with the presence of Co-N-x, pyridinic-N, and graphitic-N active centers enhancing the ORR activity. The synergistic coupling between FeCo alloy and N-doped carbon nanotubes contributed to the enhancement of electrocatalytic performance, with Fe1Co3-N-C and Fe3Co1-N-C catalysts demonstrating higher ORR performance and superior stability compared to Pt/C.
INORGANIC CHEMISTRY FRONTIERS
(2021)
