Article
Chemistry, Physical
Silvio Dantas, Katie Cychosz Struckhoff, Matthias Thommes, Alexander V. Neimark
Summary: The study introduces a new method for evaluating pore structures in carbon materials, using high-pressure CO2 adsorption isotherms to determine the pore size distribution in both micro- and mesopores. By utilizing Monte Carlo simulations and meso-canonical ensemble methods, capillary condensation transitions in mesopores were successfully predicted, demonstrating the feasibility of the technique in micro-mesoporous carbon materials.
Article
Chemistry, Applied
Enrique Garcia-Diez, Alberto Castro-Muniz, Juan Ignacio Paredes, M. Mercedes Maroto-Valer, Fabian Suarez-Garcia, Susana Garcia
Summary: Activated ordered mesoporous carbon (AOMC) sorbents have been synthesized, characterized, and evaluated for CO2 capture. Both physical and chemical activation processes were applied, with the best chemical activated AOMC achieved at 850℃ with a KOH: carbon ratio of 4:1, and the best physical activated AOMC obtained after 48 hours with a burn-off degree of 48%. The ordered mesoporous structure was found to facilitate CO2 diffusion into the micropores of the porous carbons, with performance remaining constant over multiple adsorption-desorption cycles.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
J. Jagiello, A. Chojnacka, S. E. M. Pourhosseini, Z. Wang, F. Beguin
Summary: Hierarchically micro/mesoporous carbons obtained by template carbonization were studied using nitrogen adsorption/desorption, revealing unexpected artifacts when calculating pore size distribution with the 2D-HS-SLIT model. By applying a dual shape pore model, a better fit with experimental results was achieved, showing narrower mesopore peaks and eliminating previous artifacts. Additionally, the cumulative surface area values were significantly larger than those obtained with the 2D-HS-SLIT model due to the larger surface area of cylindrical pores compared to slit-shaped mesopores.
Article
Engineering, Chemical
Rodolfo de Andrade Schaffner, Carlos Eduardo Borba, Fernanda Tavares, Ligia Gomes Oliveira, Pedro Castano, Helton Jose Alves
Summary: A simple method was used to synthesize highly porous carbon materials using commercial sugar as the carbon source, Aerosil silica as a template, and deionized water. The aging time and activation procedures significantly influenced the specific area and pore volume of the material. The material showed the presence of semi-crystalline structures, along with graphite, graphene oxide, and amorphous carbon.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Rongrong Wang, Qian Zheng, Danhua Jiao, Yinye Yang, Yang Yang
Summary: This study presents a novel, low-cost, and eco-friendly fabrication method of hierarchical porous biochar (HPB) using natural plant galla chinensis. The resulting HPB exhibits higher energy storage performance and outstanding cycle life in an all-solid-state micro-supercapacitor compared to widely used commercial-active carbon.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Environmental Sciences
Xinlei Huang, Hongxian Li, Ling Wang, Minghui Tang, Shengyong Lu
Summary: This study proposed a high-efficiency adsorbent HPC-A with high capacity and strong selectivity for toluene. The research found that the pore size distribution of adsorbents has a significant impact on the adsorption capacity and selectivity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Energy & Fuels
Yafei Shen
Summary: Volatile organic compounds (VOCs) are harmful to the environment and human health, and their emissions have increased with industrialization and economic growth. Adsorption is an effective technology for VOCs recovery due to its cost-effectiveness and low energy consumption. Porous carbons, such as carbon-based materials, zeolite-based materials, and organic polymers, have been extensively developed for VOCs adsorption. This paper provides an overview of the synthesis of porous carbons from renewable resources and their application in VOCs abatement technologies.
Article
Engineering, Environmental
Jong Min Park, Ho Chul Woo, Sung Hwa Jhung
Summary: Porous carbons derived from melamine/PANI mixture pyrolyzed at low temperatures showed better performance in CO2 adsorption, particularly MPC-550 at 550°C. The high N content and narrow pores of MPC-550 led to superior selectivity and adsorption capacity compared to PC-550.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jinsong Shi, Hongmin Cui, Jianguo Xu, Nanfu Yan, Shengyong You
Summary: The influences of porous carbon's physicochemical properties on CO2 adsorption at different pressures were investigated in this study. N-doped hierarchically ordered micro-mesoporous carbons (NHOMCs) were synthesized and their characteristics and CO2 uptake were analyzed. The results showed that NHOMCs exhibited high CO2 adsorption capacity and the adsorption performance was correlated with the physicochemical properties of the materials.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Energy & Fuels
Shuang Li, Li-Li Yu, Wei-ling Xu, Rong-bing Li, Jun-Jie Zhu, Jun Fan, Jing-Tai Zhao
Summary: Porous manganese dioxide nanoflowers were successfully prepared via a template-free method at room temperature, with a specific surface area exceeding 300 m(2) g(-1). The formation and particle sizes of the nanoflowers were found to be influenced by the nucleation concentration in the initial reaction. Additionally, samples with an average particle size of 60-80 nm, high specific surface areas, and pore volume exhibited the best electrochemical performance, with a high specific capacitance of 245 F g(-1) and excellent cycling stability.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Zichen Wang, Zhi Tang, Xuedong Xie, Meiqi Xi, Junfeng Zhao
Summary: The study explores the use of water-soluble salt as a template to fabricate hierarchical porous carbon materials (HPCs) and investigates their adsorption performance towards Congo red dye.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
Xiankun Wu, Rong Guan, Wen-Tao Zheng, Kuan Huang, Fujian Liu
Summary: Nitrogen-decorated micro-mesoporous carbons were successfully synthesized for efficient and selective adsorption of CO2, as well as high catalytic conversion activity with metal salts.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Chenhong Fang, Zhi Xu, Le Li, Huijun Ouyang, Guyu Xiao
Summary: In this study, a post-impregnation approach was used for the first time to incorporate a micropore template into a carbon precursor. By pyrolysis, abundant mesopores and numerous micropores were simultaneously generated, resulting in hierarchical pore structures and high specific surface area in the porous carbons.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Jiahuan Xu, Beichen Xue, Chunlin Xia, Chao Liu, Ming Li, Rui Xiao
Summary: Nitrogen-doped hierarchical porous carbons were synthesized using bio-oil and urea as carbon and nitrogen sources, respectively, based on a MgO template approach. The resulting carbons exhibited a micro-/meso-/macroporous structure, high specific surface area, and abundant Graphitic and Pyridinic nitrogen species, which led to excellent catalytic performance for the oxygen reduction reaction (ORR). The assembled Zn-air battery showed a maximum power density of 239.36 mW cm-2 and consistent discharging stability. This work demonstrated the great potential of bio-oil as a sustainable and low-cost precursor for the production of efficient carbon-based ORR catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Chemical
Qiliang Zhu, Fangyao Li, Yong Zheng, Yanning Cao, Yihong Xiao, Shijing Liang, Fujian Liu, Lilong Jiang
Summary: In this study, hierarchically porous carbons with large surface areas, tunable nanoporosity, and high-concentrated nitrogen base sites were developed for selective capture and separation of sulfur dioxide. These carbons showed excellent performance in SO2 adsorption and achieved high selectivities for SO2/N-2 and SO2/CO2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
