Article
Chemistry, Physical
Shuxian Di, Wenjin Liu, Chen Guo, Fanghui Wang, Anzhela Bulanova, Alexander Mebel, Hong Zhu
Summary: In this study, PtCu bimetallic nanoparticles anchored on hierarchical porous N-doped carbon were successfully fabricated, and it was found that the high surface area and mesopore ratio of N-doped carbon are beneficial for the distribution and mass transfer of PtCu particles. Furthermore, the presence of nitrogen in carbon can improve the catalytic activity by optimizing the oxygen affinity of the catalyst.
JOURNAL OF POWER SOURCES
(2022)
Article
Environmental Sciences
Qiu-Ren Pan, Peng-Yang Jiang, Bi-Lin Lai, Yun-Bing Qian, Li-Juan Huang, Xiao-Xin Liu, Nan Li, Zhao-Qing Liu
Summary: The study investigates the exploration of low-cost, long-term stable, and highly electrochemically active cathode catalysts for microbial fuel cells (MFC). A series of 3D hierarchical porous Co-N-C materials are synthesized and designed, showing excellent performance in terms of oxygen reduction reaction (ORR) and durability. The study also reveals the influence of different ORR activity cathode catalysts on the types and abundance of anode microorganisms.
Article
Nanoscience & Nanotechnology
Chaoqun Pei, Shuangqin Chen, Mingjie Zhou, Xianhao Chen, Baoan Sun, Si Lan, Horst Hahn, Tao Feng
Summary: In this study, a Ni-P hierarchical porous nanoglass (HPNG) catalytic electrode was developed for urea/H2O2 fuel cells, which exhibited excellent performance in the urea oxidation reaction (UOR) and resulted in a breakthrough in the power density of the fuel cell system. The electrode's superior UOR performance was attributed to its unique 3D hierarchical porous structure, which provided a high-energy state and significantly enlarged surface area. This research demonstrates the feasibility of scalable production of HPNG electrodes and contributes to the development of practical applications of urea/H2O2 fuel cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Keyvan Mirzaee Fashalameh, Zahra Sadeghian, Ramin Ebrahimi
Summary: In this study, a planar multi-layer solid oxide fuel cell (SOFC) was successfully fabricated using slurry-based 3D printing. The results showed that the use of hierarchically macromesopores structure can increase power density, and electrochemical performance can be improved by modifying the geometry of the layers.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Thibeorchews Prasankumar, Devashish Salpekar, Sohini Bhattacharyya, Kaaviah Manoharan, Ram Manohar Yadav, Kristen A. Miller, Robert Vajtai, Sujin Jose, Soumyabrata Roy, Pulickel M. Ajayan
Summary: In this study, high surface area porous carbons derived from sustainable biomass wastes were prepared and showed excellent performance in energy storage and gas sorption applications. The activated porous carbon derived from Tasmanian Blue Gum tree bark exhibited a hierarchically connected mesoporous structure with a large surface area and showed remarkable electrochemical storage capacity and CO2 capture performance. This work provides a simple and feasible strategy for converting waste biomass into value-added activated carbon.
Article
Energy & Fuels
Xiaoyun Zhang, Bingkang Sun, Xing Fan, Peng Liang, Guoming Zhao, Binoy K. Saikia, Xianyong Wei
Summary: In this study, soluble portions obtained from the co-thermal dissolution of rice husk and coal were used as carbon precursors to synthesize 3D hierarchical porous carbons. The electrochemical properties of the resulting carbons were investigated, and the results showed that the composition of the carbon precursors played a crucial role in determining the characteristics of the carbon materials. Nitrogen-containing organic matters in the precursors improved the conductivity, while oxygen-containing compounds contributed to pseudocapacitance. Moreover, carbon precursors with a high content of unsaturated structures exhibited excellent electrochemical properties.
Article
Chemistry, Physical
Jae Young Jung, Sungjun Kim, Jeong-Gil Kim, Min Ji Kim, Kug-Seung Lee, Yung-Eun Sung, Pil Kim, Sung Jong Yoo, Hyung-Kyu Lim, Nam Dong Kim
Summary: Hierarchical pore structure is crucial for effective mass transfer and utilization of active sites in single-metal atom catalysts. A strategy involving thermal and ammonia annealing was developed to generate hierarchical porous structure and enhance the catalytic activity of Co-N-x sites on carbon nanohorns. Experimental results showed that this strategy achieved remarkably high power density in commercialized membrane electrode assemblies.
Article
Energy & Fuels
Na Ju, Jiajing Wu, Jianghua Zhang, Yongjian Ai, Yao Wang, Xinyue Zhang, Ze-Nan Hu, Zejun Sun, Hong-bin Sun
Summary: This study presents a triple-boost method to synthesize hierarchical porous carbon anode for lithium-ion battery. The addition of acetylacetone, nickel acetylacetonate, Fe3O4 nanoparticles, and 5-phenyl tetrazole significantly improves the battery performance. The obtained carbon anode material exhibits a high charge capacity of 1125.2 mAh/g, high-rate performance of 523.3 mAh/g, and long cycle life with only 0.008% capacity attenuation after 1000 cycles under 0.5 A/g current density.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Jingui Ai, Shuhua Yang, Yana Sun, Mei Liu, Le Zhang, Degang Zhao, Jieqiang Wang, Chao Yang, Xiutong Wang, Bingqiang Cao
Summary: Hierarchical porous carbon derived from corncob cellulose has been successfully fabricated, showing excellent specific surface area and pore size distribution. It exhibits high specific capacitance and outstanding rate capability, as well as good cycling stability after 20,000 cycles.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
SuYeong Jung, Jae-Rang Lee, Yooseob Won, Dong-Ho Lee, Young Cheol Park, Youn-Sang Bae, Hyunuk Kim
Summary: Hierarchical porous carbon beads with interconnected micro- and mesopores were developed for selective CO2 capture, exhibiting high surface areas and total pore volumes. These beads showed superior CO2 adsorption capacity and selectivity compared to other porous carbon materials, highlighting their potential in reducing CO2 emissions through capture and separation processes.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Multidisciplinary
Baizeng Fang, Lius Daniel, Arman Bonakdarpour, Ruben Govindarajan, Jonathan Sharman, David P. Wilkinson
Summary: An innovative strategy was presented to engineer supported-Pt nanowire electrocatalysts with high Pt content for the cathode of hydrogen fuel cells, resulting in improved stability and performance through deposition of graphitic carbon nitride on 3D multimodal porous carbon.
Article
Chemistry, Multidisciplinary
Mi Yeon Byun, Man Sig Lee
Summary: Hierarchical porous carbon (HPC) was prepared using colloidal silica of different sizes as a template for Pt nanoparticles, with Pt dispersion varying with the pore size and structure of the HPC supports. The HPC supports with large pores showed higher furfural conversion and 1-pentanol selectivity, while those with small pores exhibited higher furfuryl alcohol selectivities. The solvent's effect on furfural hydrogenation was also investigated, with the solubility of H-2 in the solvent affecting the furfural conversion and product selectivity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Hongying Quan, Wenhao Tao, Yan Wang, Dezhi Chen
Summary: This study reports a facile strategy to improve the capacitive behavior of biomass-derived porous carbons by introducing highly graphitized carbon quantum dots (CQDs) into their structure. The resulting CQDs/HPC composites exhibit a well-developed porous structure, improved charge/ion transfer kinetics, and high capacitance and rate capability. Moreover, these composites also show high long-term stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
Zhenjiang Zhu, Liangyu Jin, Meng Zhou, Kui Fu, Fancheng Meng, Xiangfeng Wei, Jiehua Liu
Summary: In this study, hierarchically macro-meso-microporous ZIF-67/nori-derived electrocatalysts were synthesized using single-cell-array nori and ZIF-67 as templates, and KOH as a pore-forming reagent. The ZIF-67/nori-800-based Zn-H2O2 battery achieved a high maximum power density of 476 mW cm(-2) and a specific energy density of 964 W h kg(-1) at 50 mA cm(-2).
CHEMICAL COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ling Chen, Junqian Deng, Yang Yuan, Shu Hong, Bing Yan, Shuijian He, Hailan Lian
Summary: A facile and supercritical drying-free synthesis strategy is developed for rapid preparation of resorcinol formaldehyde resin organic xerogel. Hierarchical porous carbon xerogel with both amorphous and graphitic regions is obtained via pyrolysis as prepared organic xerogel. The carbon xerogel possesses a high specific surface area of 587 m(2) g(-1) and abundant surface oxygen functional groups. The present work paves a new way for rapid preparation of resorcinol-formaldehyde resin (xero)gel and extends their applications in energy storage devices.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Lucinda E. Mulko, Emma A. Cuello, Cesar A. Barbero, Gustavo A. Pino, Maria Molina, Maximiliano Rossa
APPLIED SURFACE SCIENCE
(2020)
Article
Biophysics
Emma A. Cuello, Lucinda E. Mulko, Cesar A. Barbero, Diego F. Acevedo, Edith Yslas
COLLOIDS AND SURFACES B-BIOINTERFACES
(2020)
Article
Polymer Science
Silvestre Bongiovanni Abel, Maria Molina, Claudia R. Rivarola, Cesar A. Barbero
Summary: Micrometric Pickering emulsions stabilized with water-dispersible electroactive polyaniline nanoparticles were studied, showing that the nanoparticles retain their functional properties in the emulsions. Smart Pickering emulsions stabilized with PANI-NP and a thermosensitive polymer were successfully obtained, and their thermal behavior under RF irradiation was evaluated, demonstrating a significant local temperature increase and emulsion breaking.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Review
Materials Science, Multidisciplinary
Lars Giebeler, Juan Balach
Summary: The research progress of MXene materials in enhancing the performance and longevity of Li-S batteries has been reviewed. The relationship between MXene features and their chemical interaction with sulfur redox species to constrain the shuttling of soluble polysulfide intermediates and the subsequent influence on the cell performance is discussed. Valuable future research directions of MXenes in Li-S batteries are outlined.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Damian A. Blois, Ana C. Liaudat, Virginia Capella, Gricelda Morilla, Rebeca E. Rivero, Martin F. Broglia, Cesar A. Barbero, Nancy Rodriguez, Pablo Bosch, Claudia R. Rivarola
Summary: The study explores the use of polymeric materials for sperm selection, finding a semi-interpenetrated hydrogel surface that allows for efficient sperm release with good motility and viability. The interaction between hydrogel surface and sperm is investigated, with potential applications in human and other mammalian species for advanced assisted reproductive techniques.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
J. Y. Del C. Pereyra, C. A. Barbero, D. F. Acevedo, E. Yslas
Summary: This study reports the antibacterial activity of a nanocomposite made of zinc oxide nanoparticles dispersed in a poly(acrylamide-co-hydroxyethylmethacrylate) matrix against Pseudomonas aeruginosa. The in situ synthesis of ZnONPs inside the crosslinked network of PAAm-Hema is described and the physicochemical properties of the nanocomposite are analyzed. The results show that the nanocomposite has the potential to be used as an antimicrobial agent in biomedical applications.
Article
Chemistry, Physical
Mariano M. M. Bruno, N. Gustavo Cotella, Cesar A. A. Barbero
Summary: By incorporating cellulosic fiber fabric into the resorcinol/formaldehyde (RF) precursor resins, the mechanical properties of porous hierarchical carbon were improved. The carbonized fiber fabric enhanced the elastic modulus of the composites. The adsorption of RF resin precursor onto the fabric stabilized its porosity during drying. The textural properties were evaluated, showing a surface area of 558 m^2/g. The electrochemical properties of the porous carbon were also evaluated, measuring specific capacitances of up to 182 Fg^-1 (CV) and 160 Fg^-1 (EIS).
Review
Polymer Science
Cesar A. Barbero
Summary: Hydrogels made of cPAM and conducting materials made of PANIs are widely used due to their accessible monomers, easy synthesis and excellent properties. The combination of these materials produces composites with enhanced properties and synergy between cPAM and PANIs. The composites can be formed by radical polymerization to create a gel and incorporating PANIs through oxidative polymerization. Technological applications of the composites include photothermal actuators, supercapacitors, and sensors.
Article
Chemistry, Physical
Maria Paula Militello, Maria Victoria Martinez, Luciano Tamborini, Diego F. Acevedo, Cesar A. Barbero
Summary: The synthesis and characterization of resin nanoparticles and carbonization and sulfonation processes are studied in this work. The properties and catalytic activity of the nanoparticles are investigated using acid/base titration and TGA methods. The results show that sulfonated nanoparticles can effectively catalyze ester exchange reactions and demonstrate photothermal catalysis phenomenon.
Article
Energy & Fuels
Juan Balach, Lars Giebeler
Summary: MXene-based materials have high conductivity and strong affinity for polysulfides, playing a crucial role in advancing sulfur-based batteries to a new level. Possible developments in the next ten years may lead to highly reliable, minimized Li-S batteries combined with energy harvesters for autonomous power supplies for microscaled devices.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Materials Science, Composites
Kevin Riberi, Silvestre Bongiovanni Abel, Maria Martinez, Maria A. Molina, Claudia R. Rivarola, Diego F. Acevedo, Rebeca Rivero, Emma Antonia Cuello, Romina Gramaglia, Cesar A. Barbero
JOURNAL OF COMPOSITES SCIENCE
(2020)
Article
Chemistry, Applied
Rocio Casadey, Martin Broglia, Cesar Barbero, Susana Criado, Claudia Rivarola
REACTIVE & FUNCTIONAL POLYMERS
(2020)
Article
Chemistry, Multidisciplinary
Silvestre Bongiovanni Abel, Claudia R. Rivarola, Cesar A. Barbero, Maria Molina
Article
Chemistry, Physical
Sebastian Maletti, Florencia S. Podetti, Steffen Oswald, Lars Giebeler, Cesar A. Barbero, Dania Mikhailova, Juan Balach
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Rebeca E. Rivero, Virginia Capella, A. Cecilia Liaudat, Pablo Bosch, Cesar A. Barbero, Nancy Rodriguez, Claudia R. Rivarola
