Article
Chemistry, Multidisciplinary
Le-Le Zhang, Lei Tong, Yan-Wei Ding, Lin-Wei Chen, Yu-Xia Bai, Lv-Dan Liu, Hai-Wei Liang
Summary: A general synthetic strategy has been developed for the preparation of hierarchically porous carbons (HPCs) by carbonizing metal complexing compounds prepared by mixing phenolic molecules and Zn salts in alkaline aqueous solution at room temperature. The resulting HPCs have extremely high specific surface areas and large pore volumes, showing overwhelming advantages in terms of adsorption rate and capacity towards large pollutant molecules compared to microporous carbon.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Nanoscience & Nanotechnology
Jian Shen, Luis Estevez, Dushyant Barpaga, Jian Zheng, Vaithiyalingam Shutthanandan, B. Peter McGrail, Radha Kishan Motkuri
Summary: Traditional commercially available porous carbon-fluorocarbon working pairs are promising for adsorption cooling, but advancements in engineered carbons can further enhance performance, especially in engineered carbons targeting higher sorption capacities. This study utilized hierarchically porous carbons for fluorocarbon R134a adsorption, showing exceptional uptake and outperforming previous carbon materials. The fast kinetics and reversible adsorption-desorption behaviors of fluorocarbon adsorption on these hierarchically porous carbons demonstrate their potential for adsorption cooling applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Zhiang Hou, Huachun Lan, Kai Zhu, Xiaoqiang An, Huijuan Liu, Jiuhui Qu
Summary: A hierarchically porous waste-derived carbon (AC-KOH) with multimodal pore structures was successfully synthesized by thermally remodeling the pores of waste hollow fiber membranes. The AC-KOH exhibited fast adsorption kinetics and high adsorption capacity, surpassing many reported adsorbents, offering a sustainable approach for waste membrane reutilization and overcoming the technical challenges of adsorption.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Chemistry, Multidisciplinary
Mingming Hua, Shuping Wang, Yanjun Gong, Jingjing Wei, Zhijie Yang, Jian-Ke Sun
Summary: The researchers successfully engineered mesopores into microporous organic cages through host-guest interactions with long chain ionic surfactants, equipping the resulting hierarchically porous cage soft materials with charge-selective uptake and release abilities in solution. Interestingly, trapping enzymes within the cage turns it into a nanoreactor, leading to a 5-fold enhancement in enzymatic catalysis activity compared to free enzymes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Biochemistry & Molecular Biology
Yuanyuan Wang, Yuan Xu, Xintian Lu, Kefeng Liu, Fengfeng Li, Bing Wang, Qiang Wang, Xv Zhang, Guihua Yang, Jiachuan Chen
Summary: The preparation of adsorbents from biomass using hydrothermal carbonization (HTC) has gained significant attention in recent studies. This paper provides a summary of research on carbon adsorbents developed from various sources with HTC, including the reaction mechanism, different products, modification methods to obtain activated carbon, and their application in treating heavy metal pollution and organic dyes in wastewater. The maximum adsorption capacity of carbon from different biomass sources is also evaluated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Applied
Jichao Liu, Guoliang Li, Yanxin Yu, Xuxia Zhou
Summary: In this study, a hierarchically porous covalent organic framework foam (TbBd-foam) was fabricated using a simple gas-foaming technique to adsorb and remove two typical TPM dyes from aqueous solution. The foam showed efficient adsorption capacities for removing malachite green (MG) and crystal violet (CV) within 30 minutes, with high maximum adsorption capacities. Additionally, TbBd-foam could be easily recycled by treatment with an ethanol solution containing HCl (0.1%), making it a potential adsorbent for contaminated water remediation.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Mobin Safarzadeh Khosrowshahi, Hossein Mashhadimoslem, Hadi Shayesteh, Gurwinder Singh, Elnaz Khakpour, Xinwei Guan, Mohammad Rahimi, Farid Maleki, Prashant Kumar, Ajayan Vinu
Summary: With global warming and climate change being a reality, international investments are increasingly being made in climate change mitigation. Carbon capture and separation (CCS) is gaining paramount importance as an effective solution for global warming. Sorption on porous materials, especially natural products-derived porous carbons, shows promise as an alternative to traditional CO2 capture technologies due to their sustainable availability, economic viability, and recyclability. This review provides crucial insights and analyses on the application of porous carbons in CO2 capture, including synthesis methods, structural characterization, and the use of simulation techniques. The review also outlines future research directions to progress the use of natural products-derived porous carbons for CO2 capture.
Article
Chemistry, Physical
Lihua Wang, Hongwei Li, Mingyue Li, Liyun Zhang, Heng Zhang, Zi-Yu Liu, Wancheng Zhu
Summary: The search for high-performance absorbents for efficient treatment of wastewater containing organic dyes is increasingly important worldwide. This study introduces trace nitrogen-doped porous biochar nanoparticles (NPBs) derived from waste corn roots, which show superior adsorption performance for the removal of organic dyes. The NPBs have a high specific surface area and can effectively remove dyes even at high concentrations.
Article
Chemistry, Physical
Lihua Wang, Hongwei Li, Mingyue Li, Liyun Zhang, Heng Zhang, Zi-Yu Liu, Wancheng Zhu
Summary: In this study, trace N-doped porous biochar nanospheres (NPBs) with a high specific surface area were derived from waste corn roots for the first time. The NPBs exhibited superior adsorption performance for the removal of organic dyes in wastewater.
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
Chemistry, Multidisciplinary
Victoria Baird, Ryan E. Barker, Benjamin Longhurst, C. Rob McElroy, Siyu Meng, Michael North, Junzhong Wang
Summary: The use of potassium hydroxide activated Starbons (R) derived from starch and alginic acid as adsorbents for 29 volatile organic compounds (VOCs) was investigated. In every case, the alginic acid derived Starbon (A800K2) was found to be the optimal adsorbent, significantly outperforming both commercial activated carbon and starch derived, activated Starbon (S800K2). The saturated adsorption capacity of A800K2 depends on both the size of the VOC and the functional groups it contains. The highest saturated adsorption capacities were obtained with small VOCs. For VOC's of similar size, the presence of polarizable electrons in lone pairs or pi-bonds within non-polar VOCs was beneficial. Analysis of porosimetry data suggests that the VOC's are being adsorbed within the pore structure of A800K2 rather than just on its surface. The adsorption was completely reversible by thermal treatment of the saturated Starbon under vacuum.
Article
Chemistry, Multidisciplinary
Xin Zhao, Xiangpeng Kong, Fengliang Wang, Ruiqi Fang, Yingwei Li
Summary: A novel strategy for the synthesis of bimetal SNCs stabilized within hierarchical porous carbons (HPC) was reported in this study. The obtained Cu-Pd@HPC composite exhibited superior catalytic activity and recycling durability in the selective transformation of furfural to maleic acid. DFT calculations revealed the mechanism behind the enhanced catalytic activity by introducing Pd into the system.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Hongmin Cui, Jianguo Xu, Jinsong Shi, Shengyong You, Chao Zhang, Nanfu Yan, Yuewei Liu, Guihua Chen
Summary: In this study, porous carbons with large surface area were synthesized using four different potassium salts as activators, achieving a specific surface area of up to 2403 m(2)/g. CO2 adsorption tests revealed that ultramicropores and nitrogen doping play crucial roles in influencing the CO2 uptake performance under different pressure conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Zhong Dai, Peng-Gang Ren, Hua Zhang, Xin Gao, Yan-Ling Jin
Summary: A novel nitrogen-doped carbon nano-material was prepared from spent coffee ground for efficient adsorption of organic dyes. The material exhibited hierarchical pore structure and large numbers of nitrogen-containing groups, showing excellent adsorption capacity for anion Congo red. However, its adsorption capacity for cation methylene blue was inferior to that of untreated carbon nano-materials.
Article
Chemistry, Multidisciplinary
Qi Cao, Guoqing Ning, Fan Yang, Ye Wang, Bofeng Li, Xinlong Ma
Summary: Hierarchically porous activated carbons (PACs) were synthesized by a tableting-activation method, with the porous structure modulated by adjusting dissipative process parameters, leading to excellent capacitive energy-storage performance. The optimal PAC (PAC-10) exhibited an ultrahigh SSA and well-developed hierarchical porous structure, demonstrating outstanding performance in both aqueous electrolyte supercapacitor systems and Li ion capacitor (LIC) systems.
