Article
Chemistry, Physical
Xiong Peng, Zhijia Luo, Hongmei Xie, Wanwen Liang, Jinlu Luo, Chengxiong Dang, Aili Wang, Lihua Hu, Xiwen Yu, Weiquan Cai
Summary: This study fabricated nitrogen doped porous carbons (NC-x) from peanut shell for adsorbing p-arsanilic acid and roxarsone. The results showed that NC-750, activated at 750°C, exhibited high adsorption capacities and the mechanisms involved pore-filling, hydrogen bonding, and 7C-7C interactions.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Forouzan Vakili, Alimorad Rashidi, Lobat Taghavi, Nabiollah Mansouri
Summary: The study presents the synthesis of a nitrogen and sulfur dual-doped waste-derived graphene-like nanoporous carbon and investigates its capability in removing mercury vapor from gas streams. The doped graphene-like carbon nanosheets showed enhanced activity towards mercury vapor adsorption compared to pristine graphene-like carbon. The best performing sample achieved 94.5% mercury removal, outperforming sulfur-impregnated commercial activated carbon.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Xuedong Ma, Jie Deng, Ruiying Zhang, Shuang Li, Riguang Zhang
Summary: Hierarchical porous carbon (NPy-HPC) nanoarchitectonics with honeycomb-like and nitrogen-phosphorus co-doping features were prepared using self-doping and external doping. The resulting NP1.0-HPC exhibited appropriate heteroatom content (3.15 at.% for nitrogen and 0.3 at.% for phosphorous), high specific surface area (2141 m2 g-1), and total pore volume (1.04 cm3 g-1), making it a potential material for electrochemical energy storage and dye removal applications. The NP1.0-HPC electrode showed excellent electrochemical performance with a high specific capacitance of 378.8 F g-1 at 1 A g-1 and a good rate capability of 271.6 F g-1 at 20 A g-1. The NP1.0-HPC//NP1.0-HPC symmetrical supercapacitor exhibited a desirable energy density of 17.7 Wh kg-1 at a power density of 440 W kg-1. In addition, NP1.0-HPC showed efficient dye removal capability, particularly for methylene blue (666.9 mg g-1) and methyl orange (360.9 mg g-1). This study proposes a facile and cost-effective strategy for the development of high-performance three-dimensional (3D) porous carbon nanoarchitectonics.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Nilesh Mohan Khalse, Mahuya De
Summary: This study investigated the effect of nitrogen doping on the adsorptive removal of sulfur compounds from model fuel. Nitrogen doping improved the surface area and pore volume of templated carbon, thereby enhancing the adsorption capacity of sulfur compounds. The adsorption-regeneration cycles showed that the removal efficiency was only lowered by 4-10% after five cycles.
Article
Chemistry, Multidisciplinary
Jinsong Shi, Hongmin Cui, Jianguo Xu, Nanfu Yan, Chao Zhang, Shengyong You
Summary: Porous carbon with specifically designed flower-like structure was synthesized and studied for CO2 adsorption. Nitrogen doping showed positive effects on CO2 uptake and had strong influence on CO2/N2 selectivity. The carbon flowers exhibited high surface area and nitrogen content.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Energy & Fuels
Mohamed A. El-Nemr, Mohamed A. Hassaan, Ibrahim Ashour
Summary: Nitrogen-doped activated carbon (NDAC) was prepared from saw dust/zinc chloride mixture and tested for its adsorption capacity of Acid Brown 14 (AB14) dye. The NDAC synthesized at 600 degrees C showed the best adsorption performance for removing AB14 dye from water.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
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
Materials Science, Textiles
Tingting Chen, Xiaosai Hu, Tao Zhao, Yuanyu Ge
Summary: Formaldehyde poses a significant threat to human health due to its carcinogenic effect. Carbon materials are widely used to remove formaldehyde, but most suffer from low adsorption rate. In this study, oxygen and nitrogen co-doped activated carbon fiber was prepared and showed improved adsorption performance for formaldehyde removal. The N-O-ACF adsorbent may be promising in indoor air purification.
FIBERS AND POLYMERS
(2022)
Article
Chemistry, Multidisciplinary
Joonwon Bae, Jin-Yong Hong
Summary: Nitrogen-doped porous carbon nanofibers (N-PCNF) were synthesized using carbonization method and demonstrated effective removal of heavy metal ions. The N-PCNF exhibited high removal efficiency for Hg2+ ions, showing potential for practical applications in heavy metal ion removal.
Article
Thermodynamics
Jinsong Shi, Jianguo Xu, Hongmin Cui, Nanfu Yan, Jiyong Zou, Yuewei Liu, Shengyong You
Summary: N-doped hollow carbon nanospheres (NHCNs) were synthesized using a combined soft template-chemical activation method. The NHCNs exhibited rich N-doping and developed porosity. The sample activated at 800 degrees C showed a high specific surface area of 3234 m2/g. The study demonstrated the potential of NHCNs for CO2 capture in both pre- and post-combustion processes.
Article
Chemistry, Physical
Glaydson S. dos Reis, Davide Bergna, Alejandro Grimm, Eder C. Lima, Tao Hu, Mu Naushad, Ulla Lassi
Summary: This study reports a simple method for preparing nitrogen-doped biochar using birch trees and melamine as a nitrogen dopant for the adsorption of Acid red 18 dye from water. The doped biochar showed improved adsorptive properties and efficient removal of contaminants from synthetic effluents.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Wuhui Li, Hongmin Cui, Jianguo Xu, Jinsong Shi
Summary: In this article, the preparation of N-doped porous carbon from lab used filter paper was presented. The effects of KHCO3 activation on the physicochemical properties of the carbon materials were thoroughly investigated. The derived carbon materials exhibited high CO2 uptake at low temperature and high pressure conditions.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Engineering, Environmental
Songlin Zhao, Fushan Chen, Xiandi Zhu, Weijun Liu, Chenlin Wu, Jie Zhang, Shibin Ren, Zhengzhong Yan, Wenli Cao, Qunfeng Zhang, Xiaonian Li
Summary: A novel hierarchically porous N-doped carbon material was successfully synthesized using a soft templating method, demonstrating a high surface area and adsorption capacity for the removal of hydrophilic dyes from aqueous effluents. Additionally, the sorbent showed excellent regeneration capability after multiple cycles.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Wei Gao
Summary: In this study, porous biomass carbon was generated from Clivia miniata leaves for the first time using NaOH activation. The CMBC had a large specific surface area and total pore volume. The adsorption experiments using malachite green as the model dye showed that CMBC had high adsorption capacity at pH 8 and fast adsorption rate in the first 5 minutes. The adsorption mechanism of malachite green onto CMBC was also investigated, and the adsorption efficiency remained high after 10 cycles. Overall, CMBC has great potential in treating dyeing wastewater pollution.
Article
Chemistry, Physical
Khee Chung Hui, Wei Lun Ang, Nonni Soraya Sambudi
Summary: In this study, carbon quantum dots doped with nitrogen and bismuth were synthesized from rice husk. The effects of doping were investigated by adjusting the nitrogen and bismuth sources, resulting in the formation of spherical carbon quantum dots with sizes less than 10 nm. The doped carbon quantum dots showed improved performance in methylene blue photodegradation and copper (II) removal, with N-RHCQDs and Bi-RHCQDs demonstrating the highest degradation performance and adsorption capacity.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)