Article
Chemistry, Physical
Xingyan Zhang, Joydeep Dutta
Summary: Capacitive deionization has been proven as a viable resource-efficient alternative for removing dissolved salts from water, but further improvements in electrode materials are necessary. This study successfully grew X-Fe (X = Mn, Co, Cu) Prussian blue analogues on activated carbon cloth electrodes, showing higher salt adsorption capacity and better charge efficiency. Among them, cobalt hexacyanoferrate-modified electrodes demonstrated the most stable performance with a salt adsorption capacity of 14.47 mg g(-1) at 1.0 V and the lowest energy consumption of 0.389 kWh m(-3). This simple strategy may pave the way for designing and synthesizing advanced electrode materials for capacitive deionization devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
Mamta Sham Lal, Ramaprabhu Sundara
Summary: This research developed a flexible electrode based on electrospun porous carbon nanofibers and TiO2 nanoparticles, and synthesized the PCNFs/TiO2 composite through a simple in-situ activation procedure. The composite exhibited a high specific surface area and pore volume, and the CDI unit assembled with the flexible electrodes demonstrated excellent salt electrosorption capacity and stability in high salt concentration and conductivity solutions, making it a promising option for future flexible CDI applications.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Htet Htet Kyaw, Myo Tay Zar Myint, Salim Al-Harthi, Ala'a H. Al-Muhtaseb, Mohammed Al-Abri
Summary: In situ deposition of silica nanoparticles on activated carbon clothes enhanced the dielectric property of the surface, making them efficient electrodes in capacitive deionization systems. A concentration of 45 mM silica showed the best desalination efficiency and specific capacitance, outperforming other concentrations.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Chunjie Zhang, Dong Wang, Zhen Wang, Guangshuai Zhang, Zhichao Liu, Jie Wu, Jin Hu, Guangwu Wen
Summary: A metal-organic framework-engaged structural regulation strategy is developed to enhance the desalination properties of carbon fibers. The study shows that porous carbon fibers with hierarchical porous structure and hydrophilic surface provide abundant ions-accessible sites and rapid electron transport. Furthermore, monolithic porous carbon fibers-carbon nanotubes are fabricated to enhance the desalination performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Electrochemistry
Zhen Wang, Wenyang Deng, Jie Peng, Luwei Miao, Yi Chen, Wenqing Chen
Summary: Biomass carbon aerogels have attracted increasing interest due to their hierarchical pore structure distribution, high specific surface area, and modifiability. In this study, carboxymethyl cellulose and metal ions were used to prepare carbon aerogels, and a CDI electrode device was constructed for desalination. The results showed that the coordination between metal ions and carboxyl groups formed a carbon aerogel with a three-dimensional network structure, and the addition of metal ions significantly improved the surface charge and graphitization of the material.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Valentina G. Minkina, Stanislav I. Shabunya, Vladimir I. Kalinin, Vladimir V. Martynenko
Summary: This study investigated the catalytic hydrolysis of aqueous NaBH4 solutions and found that the catalyst used showed stable catalytic activity. It was also observed that conducting the hydrolysis under near adiabatic conditions significantly reduced the hydrolysis time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Laszlo Szabo, Xingtao Xu, Koichiro Uto, Joel Henzie, Yusuke Yamauchi, Izumi Ichinose, Mitsuhiro Ebara
Summary: The study focuses on the relationship between the structure and electrochemical performance of porous carbon nanofibers (PCNFs) derived from the biobased building block chitosan. The researchers found that by varying the amount and molecular weight of the sacrificial pore-forming polymer, they could tailor the structure of the PCNFs to have a high surface area and hierarchical pore network, resulting in fast ion diffusion, high specific capacitance, and rate capability. The chitosan-based materials demonstrated high stability and charge efficiency, making them promising for use in charge storage devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Chemical
Xinyuan Zhao, Yongshuo Zheng, Zhilong Zheng, Zhizhong Guo, Tulai Sun, Jiayi Qin, Na Qiu, Zhenyu Zhang, Wei Wen
Summary: Capacitive deionization is a promising desalination technique for freshwater scarcity. This study demonstrates that pre-oxidation treatment effectively improves the salt adsorption capacity and cycling lifespan of carbon clothes, providing a new avenue for the design of high-performance electrodes in capacitive deionization applications.
Article
Engineering, Chemical
Fang Li, Jia Li, Luyao Chen, Yanmei Dong, Pinhong Xie, Qiming Li
Summary: A stable and efficient supported CoB catalyst with excellent catalytic performance and cycling stability has been successfully developed for hydrogen production from NaBH4 hydrolysis. The as-prepared CoB/PANI composite catalyst exhibits high hydrogen production rate and low activation energy, showing great potential in practical applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Chemical
Yoshihiro Nakayama, Eiji Imamura, Seiji Noda
Summary: This study experimentally investigated the possibility of using granular activated carbon (GAC) for capacitive deionization (CDI) electrodes and found that compressing GAC significantly improved ion removal. The effect of applied voltage on salt adsorption capacity was also studied, showing that the CDI cell with compressed GAC achieved a salt adsorption capacity comparable to other CDIs in previous studies, making it a potential cost-effective desalination technology.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Xiang Song, Xing Chen, Wenqing Chen, Tianqi Ao
Summary: A novel metal-organic frameworks derived carbon composite electrode was successfully fabricated for efficient phosphorus removal by capacitive deionization. The electrode exhibited a high adsorption capacity and low energy consumption and operating costs, providing a new approach for phosphorus removal in CDI technology.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Neslihan Erat, Gamze Bozkurt, Abdulkadir Ozer
Summary: This paper presents the catalytic effect of Co doping on different oxide supports (single, bimetallic, and trimetallic) for the hydrolysis of NaBH4 aqueous solutions. The Co/CuO-NiO-Al2O3 catalyst shows high reaction activity at 25 degrees C and exhibits good reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Alessandro Pedico, Sergio Bocchini, Elena Tresso, Andrea Lamberti
Summary: A novel functionalized graphene oxide (fGO) is proposed for water desalination in this study. The fGO is obtained through functionalization and coating to create a porous electrode, which shows remarkable improvement in desalination performance. These findings lay the groundwork for future research.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Polymer Science
Humair Hussain, Asim Jilani, Numan Salah, Ahmed Alshahrie, Adnan MemiC, Mohammad Omaish Ansari, Joydeep Dutta
Summary: Due to the industrial revolution, fresh water reserves are being polluted every day and man-made activities have adverse effects upon the ecosystem. Therefore, it is necessary to explore new technologies to save and purify water resources. Capacitive deionization is considered as an emerging technique for removing excess ions to produce potable water and desalination.
Article
Chemistry, Multidisciplinary
Guangqiang Ma, Yingsheng Xu, Anjiang Cai, Hengjian Mao, Xinyuan Zhang, Dong-Myeong Shin, Lei Wang, Hongjian Zhou
Summary: In this study, LiMn2O4 nanosheets were prepared on carbon cloth using a three-step strategy. The binder-free electrodes showed a uniform 2D array of nanosheets with hierarchical nanostructure, and exhibited excellent cycling stability and selective ion adsorption capacity.
Article
Chemistry, Applied
Sujik Hong, Hongsun Hwang, Jin Pyo Hwang, Jin Won Kim, Chang Hyun Lee, Jaeyoung Lee
Summary: Palladium (Pd) on carbon support, electron-enriched by hydrogen incorporation (Pd-H/C), synthesized via dimethylamine borane complex, exhibits the best catalytic activity for the oxidation of formate (HCOO-) at 0 degrees C, with a remarkable power density of 272 mW cm(-2).
Review
Chemistry, Applied
Kahyun Ham, Jaeyoung Lee
Summary: Hierarchical multi-pore structures have been suggested for maximizing ion adsorption capacity with fast electrosorption in energy conversion and desalination technologies. In this study, a carbon composite electrode including mesoporous and microporous carbon was developed using a simple method to achieve high surface area and fast electrosorption. It was observed that introducing mesoporous carbon to microporous carbon can improve the adsorption kinetics.
Article
Chemistry, Physical
Kahyun Ham, Sukhwa Hong, Sinwoo Kang, Kangwoo Cho, Jaeyoung Lee
Summary: A new octahedral Co2+-rich Co oxide catalyst was reported to efficiently lower the cell voltage in anion exchange membrane water splitting for H-2 production. By increasing the amount of Co4+ at the active sites, the oxygen evolution reaction activity was enhanced, leading to a lower OER overpotential.
ACS ENERGY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Jihyeon Park, Sooan Bae, Jin-Soo Park, Sungyool Bong, Jaeyoung Lee
Summary: This study successfully achieved high power density in direct liquid hydrazine fuel cells by synthesizing Cu@NiCo/C nanocomposites, demonstrating the importance of the proportion of three different non-PGM metals. The introduction of copper was found to improve the conductivity and water adsorption of the catalyst, providing a new research perspective for alkaline liquid fuel cells.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Applied
Satpal Singh Sekhon, Jaeyoung Lee, Jin-Soo Park
Summary: Oxygen electrode catalysts are crucial for energy technologies, and biomass-derived heteroatom-doped porous carbons have emerged as low-cost, renewable materials for efficient bifunctional oxygen catalysts. These materials show good activity and stability in both oxygen reduction and evolution reactions.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Sukhwa Hong, Kahyun Ham, Jeemin Hwang, Sinwoo Kang, Min Ho Seo, Young-Woo Choi, Byungchan Han, Jaeyoung Lee, Kangwoo Cho
Summary: In this study, a highly efficient and stable oxygen evolution reaction (OER) electrocatalyst is developed by using scalable solution casting method to deposit doped nanoparticles on Ni foam. Advanced X-ray absorption spectroscopy and density functional theory calculations reveal the changes in catalytic active sites, providing new insights for precious-metal doped Ni-Fe oxide electrocatalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sinwoo Kang, Changbin Im, Ioannis Spanos, Kahyun Ham, Ahyoun Lim, Timo Jacob, Robert Schloegl, Jaeyoung Lee
Summary: In this study, the degradation of NiFe-based oxides in Fe-purified KOH was investigated, and a solution was proposed. Loading TPP on the catalyst/electrolyte interface can alleviate the destabilization of NiFe (oxy)hydroxide and prolong the catalyst's lifetime.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Sunki Chung, HyungKuk Ju, Minjun Choi, Donghyun Yoon, Jaeyoung Lee
Summary: Electrochemical nitrogen reduction reaction (NRR) under ambient conditions is a green alternative route for NH3 production. Molybdenum is a promising candidate for NRR electrocatalysts, but designing an efficient Mo-based catalyst remains challenging. The Co-Mo-CNF catalyst has successfully enhanced NRR selectivity towards NH3, achieving high NH3 formation rates and Faradaic efficiencies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Dieudonne Tanue Nde, Jihyeon Park, Sang Hyuk Lee, Jaeyoung Lee, Hye Jin Lee
Summary: A highly sensitive amperometric hydrazine monitoring sensor with an ultrawide dynamic range was developed using iridium-nickel alloy nanoparticles functionalized with multi-walled carbon nanotubes. The sensor exhibited excellent selectivity and stability in alkaline media and had a low detection limit for hydrazine. It was successfully applied for on-site monitoring of hydrazine concentration in a fuel cell.
Article
Materials Science, Biomaterials
Adityanarayan Mohapatra, Santhosh Kalash Rajendrakumar, Kondareddy Cherukula, Myong-Suk Park, Sathiyamoorthy Padmanaban, Arathy Vasukuty, Ayeskanta Mohanty, Jae Young Lee, Woo Kyun Bae, In-kyu Park
Summary: This study developed a nanoadjuvant targeting the mannose receptor for improving therapeutic outcomes in late-stage HPV-related cancers. The nanoadjuvant enhanced accumulation in tumors and targeted antigen presenting cells, leading to improved antitumor immunity by reducing immunosuppressive cells. This study demonstrates the potential of the nanoadjuvant as a new treatment option for HPV-induced cancers.
BIOMATERIALS SCIENCE
(2023)
Article
Engineering, Environmental
Jethro Daniel Pascasio, Sunki Chung, Mokyeon Cho, Jaeyoung Lee
Summary: This article discusses the development strategies for electrochemical nitrogen reduction reaction (eNRR), including catalyst design, electrolyte, and reactor types. It provides new insights into the scale-up science for eNRR and the future commercialization of the electrocatalytic ammonia synthesis process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Jihyeon Park, Jaeyoung Lee
Summary: This study investigates the impact of various operational factors on the power output performance of a single-cell system and compares it to a short stack consisting of five single cells. The findings suggest that the optimization point in the single-cell does not apply to the short stack, which is significant for evaluating the commercialization process of hydrazine fuel cells for portable and mobile devices.
ADVANCED ENERGY AND SUSTAINABILITY RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Youjin Lee, Kahyun Ham, Dongyoon Shin, Sungyool Bong, Beomgyun Jeong, Jaeyoung Lee
Summary: In this study, a simple catalyst layer preparation method using an additive based on physical mixing was introduced to achieve facile oxygen reduction reaction (ORR) in acid media. By adding N-doped carbon containing mainly pyridinic N, the adjacent pyridinic N near the Pt catalyst acts as a Lewis base, suppressing Pt oxidation and enhancing ORR activity.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Jihyeon Park, Sinwoo Kang, Jaeyoung Lee
Summary: Symbolic regression is a widely used machine learning tool for determining the governing equation from a given dataset. However, it can result in missing results when more mathematical operations are introduced. In this study, we applied deep symbolic regression to a dense space of overpotential formulas to reveal the scaling relations of the Gibbs free energies of key intermediate adsorbates during the oxygen evolution reaction on FeNi surfaces in alkaline media. Our approach predicted an optimized electrocatalyst ratio and resulted in a minimum overpotential in the water-splitting process.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Applied
Sooan Bae, Jihyeon Park, Yuna Hwang, Jin-Soo Park, Jaeyoung Lee, Beomgyun Jeong
Summary: Alkaline hydrazine liquid fuel cells (AHFC) with non-precious metal catalysts have attracted attention for their high power performance. This study prepared a Fe-N-C catalyst with magnetite particles and hierarchical pore structure through steam activation, which significantly improved the power performance of AHFCs. The results showed that hierarchical pore structures improved catalyst utilization efficiency and magnetite nanoparticles acted as surface modifiers to reduce the interfacial resistance between the electrode and the ion-exchange membrane.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Applied
Qingyuan Zheng, Jack H. Williams, Scott Elgersma, Mick D. Mantle, Andrew J. Sederman, G. Leendert Bezemer, Constant M. Guedon, Lynn F. Gladden
Summary: In this study, a pilot-scale fixed-bed reactor compatible with NMR/MRI was developed for Fischer-Tropsch synthesis. Multiple magnetic resonance techniques were applied to quantitatively characterize different product species within catalyst pellets, providing valuable information for catalyst and reactor optimization.
Article
Chemistry, Applied
Lisa Ramisch, Sebastian Pfaff, Sabrina M. Gericke, Edvin Lundgren, Johan Zetterberg
Summary: We present a combination of optical operando techniques that allow simultaneous measurement of adsorbed species on catalyst surfaces, monitoring of surface oxide formation, and imaging of the gas phase above the catalyst surface. The experimental setup was validated by studying CO oxidation on Pd(100) at different pressures, revealing the effects of pressure on the heterogeneous catalytic reaction.
Article
Chemistry, Applied
Marta Paniagua, Gabriel Morales, Juan A. Melero, Daniel Garcia-Salgado
Summary: The influence of common impurities in levulinic acid on the catalytic performance of different acid catalysts for bio-jet fuel production was studied. It was found that furfural had the greatest detrimental effect on catalyst performance, while propyl-sulfonic acid-modified SBA-15 and sulfonic acid resin Amberlyst-70 showed good regeneration ability.
Article
Chemistry, Applied
Jesus Tapiador, Pedro Leo, Guillermo Calleja, Gisela Orcajo
Summary: This study presents a new MOF material, Zn-URJC-13, with acid and basic sites, permanent porosity, and high affinity to CO2 molecules. The Zn-URJC-13 catalyst exhibits efficient performance in CO2 cycloaddition reactions and can be reused multiple times.
Article
Chemistry, Applied
Dan Zhao, Vita A. Kondratenko, Dmitry E. Doronkin, Shanlei Han, Jan-Dierk Grunwaldt, Uwe Rodemerck, David Linke, Evgenii V. Kondratenko
Summary: This study demonstrates the potential of cheap and commercially available Zr or Ti-based supports and ZnO to serve as active and selective catalysts for propane dehydrogenation (PDH). The catalytically active species formed in situ under PDH conditions consist of isolated ZnOx. ZnOx on the surface of LaZrOx shows the highest rate of propene formation.
Article
Chemistry, Applied
Hanbyeol Kim, Jung Rae Kim, Young-Kwon Park, Jeong-Myeong Ha, Jungho Jae
Summary: In this study, metal phosphates were used as catalysts for biomass conversion to produce sustainable aromatics through DielsAlder cycloaddition reactions. The effects of synthesis method, activation method, and P/Ti molar ratio on the structure and acid properties of titanium phosphate catalysts were systematically studied. The mesoporous titanium phosphate catalyst synthesized by hydrothermal method at 180℃ for 12 h followed by ethanol refluxing at 60℃ for 24 h at a molar P/Ti ratio of 1 showed the highest surface area and acid site density.
Article
Chemistry, Applied
Yasin Khani, Sumin Pyo, Kwang-Eun Jeong, Chul-Ung Kim, Moonis Ali Khan, Byong-Hun Jeon, Kun-Yi Andrew Lin, Siyoung Q. Choi, Young-Kwon Park
Summary: A protonated form of Zeolite Socony Mobil-5 (H-ZSM-5) catalyst was synthesized through a hydrothermal method using different sources of silica. The effect of loading the catalyst with yttrium, samarium, and gadolinium on the acidic properties was investigated. Among the metal-loaded catalysts, the Sm/LHZ catalyst showed the best performance in the methanol to propylene conversion due to its high amount of weak and intermediate acid sites, while the Gd-LHZ catalyst increased the selectivity towards ethane and propane.
Article
Chemistry, Applied
Michael Franc, Ivana Cisarova, Jan Vesely
Summary: The present study investigates an enantioselective cyclization of enals with imidazolone derivatives catalyzed by a combination of achiral Pd(0) complex and chiral secondary amine. Corresponding spirocyclic imidazolones were produced in high yields with moderate diastereoselectivity and excellent enantioselectivity. The developed co-operative catalytic methodology provides a highly substituted spirocyclic scaffold with four stereogenic centers under mild conditions.
Article
Chemistry, Applied
Mauro Alvarez, Jennifer Cueto, David P. Serrano, Pablo Marin, Salvador Ordonez
Summary: This study focuses on improving the formulation and preparation methods of catalysts for the production of dimethyl carbonate. By using suitable catalyst preparation methods and copper salt precursors, the researchers successfully produced catalysts with optimal performance for dimethyl carbonate formation.
Article
Chemistry, Applied
Claudia J. Keijzer, Luc C. J. Smulders, Dennie Wezendonk, Jan Willem de Rijk, Petra E. de Jongh
Summary: This study investigates the catalytic behavior of alpha-alumina supported silver catalysts in the presence of chloride. It is found that the particle size of silver can affect the selectivity of the catalyst, but different strategies lead to different results. In this size range, the selectivity of ethylene oxide is correlated to the Ag : Al2O3 surface ratio.
Article
Chemistry, Applied
Takeshi Aihara, Wataru Aoki, Michikazu Hara, Keigo Kamata
Summary: The development of acid-base bifunctional catalysts is important for promoting specific chemical transformations. In this study, Ti-based perovskite oxides were synthesized and used as catalysts for two C-C bond-forming reactions (cyanosilylation and Knoevenagel condensation). The highly pure SrTiO3 nanoparticles with a high specific surface area exhibited the highest catalytic performance, and could be easily recovered and reused.
Article
Chemistry, Applied
Olga Gorlova, Petra Pribylova, Eliska Vyskocilova, Katerina Peroutkova, Jan Kohout, Iva Paterova
Summary: This study investigates the Baeyer-Villiger oxidation of beta-cyclocitral using tin-modified mixed oxides as catalysts. The optimal reaction conditions and the effects of various factors on the reaction course and selectivity were determined. The results show that tin-modified mixed oxides exhibit high activity and selectivity in the oxidation reaction.
Article
Chemistry, Applied
M. I. Avila, M. M. Alonso-Doncel, L. Briones, G. Gomez-Pozuelo, J. M. Escola, D. P. Serrano, A. Peral, J. A. Botas
Summary: The catalytic fast pyrolysis of lignin using ion-exchanged zeolite catalysts showed significant improvements in bio-oil quality and the production of aromatic hydrocarbons and oxygenated compounds.
Article
Chemistry, Applied
Enrico Catizzone, Giorgia Ferrarelli, Paolo Bruno, Girolamo Giordano, Massimo Migliori
Summary: The acid-catalysed alcohol conversion reaction is a promising route for de-fossilization strategies. Research on pure alcohol conversion and simultaneous dehydration of mixed alcohols have shown different product compositions, with the type and distribution of acid sites affecting the reaction mechanism.
Article
Chemistry, Applied
Alireza Ranjbari, Juho Kim, Jihee Yu, Jiyun Kim, Mireu Park, Nayoung Kim, Kristof Demeestere, Philippe M. Heynderickx
Summary: This study investigated a novel kinetic model for the adsorption and photocatalytic degradation of methyl orange using commercial ZnO and reduced ZnO photocatalysts. The results provided new insights into the interaction of catalysts with molecules of different charges and compared with a previous study on methylene blue. The presence of oxygen vacancies in ZnO and their effects on adsorption and photocatalytic degradation were analyzed, and the photocatalytic degradation rate of reduced ZnO was found to increase significantly.
