Article
Thermodynamics
Sergio Acevedo, Liliana Giraldo, Juan Carlos Moreno-Pirajan
Summary: This research conducted a calorimetric evaluation of activated carbon-type adsorbent solids prepared by chemical activation of African palm shells with Fe(NO3)(3) and Cu(NO3)(2) salts. The immersion enthalpy values of porous materials varied with different immersion liquids, chemical agents, and concentrations. The BET areas and pore volumes of the obtained adsorbent solids increased proportionally to the increase in immersion enthalpy values, showing variations in textural and chemical characteristics of porous solids.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Physical
B. Charmas, V. Sydorchuk, S. Khalameida, M. Kusmierz, M. Zi ezio, K. Kucio
Summary: The study shows that copper-containing micro-mesoporous active carbons exhibit excellent adsorption and photocatalytic performance, with a structure that is conducive to the adsorption and reaction of molecules. Nitric acid modification can control the copper content and enhance the interactions between molecules on the surface of the active carbons.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Mingda Che, Jingzhe Xiao, Cancan Shan, Shaohuang Chen, Renliang Huang, Yitong Zhou, Mei Cui, Wei Qi, Rongxin Su
Summary: In this study, a novel composite catalyst, TEMPO-oxidized cellulose nanofiber-supported iron/copper bimetallic nanoparticles (TOCNF-Fe/Cu), was synthesized to activate sodium percarbonate (SPC) for the removal of chloroform (CF) from groundwater. The TOCNF-Fe/Cu-SPC system demonstrated high efficiency and stability in CF removal, making it an attractive candidate for the treatment of HM-contaminated groundwater.
Article
Chemistry, Physical
Penghui Yan, Eric Kennedy, Michael Stockenhuber
Summary: Ni-Fe catalysts prepared by different impregnation techniques were studied for their activity in the hydrodeoxygenation of guaiacol and hydrogenation of toluene. The study found that the ratio of Ni/Fe significantly influences the hydrodeoxygenation activity, with a catalyst having a Ni/Fe mass ratio of 3.3 exhibiting the highest performance.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
Vasu Chaudhary, Sweta Sharma
Summary: The polymer-silica hybrid support catalyst was synthesized by incipient impregnation technique and showed good catalytic activity in the oxidation of ethylbenzene, with acetophenone as the main product and benzaldehyde as the minor product. The highest ethylbenzene conversion rate reached 83.65% at a 1:4 mol ratio of ethylbenzene to TBHP and a temperature of 100 degrees C. The catalysts demonstrated good reusability, with the ability to be reused three times without significant loss in structural and catalytic properties.
Article
Environmental Sciences
Athanasia K. Tolkou, Miroslava Vaclavikova, George P. Gallios
Summary: This research focuses on removing Cr(VI) from water using modified activated carbon with a combination of iron and manganese or copper oxides. The experimental results showed that NFM material had the highest Cr(VI) removal rate (99.7%) at pH 3 with a 3-hour contact time. The maximum adsorption capacity for NFM was found to be 44.42 mg/g using the Langmuir model, and the structure of the modified adsorbents materials was studied using BET and SEM characterization techniques.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Chemistry, Physical
Fu-Yin Ko, Te-Wei Chiu, Rudder T. Wu, Tai-Cheng Chen, Shing-Hoa Wang, Horng-Yi Chang
Summary: Ultrasonic spray pyrolysis method can impregnate thin layer electrolyte into porous anode, extending the depth of triple phase boundaries to several times that of the dense thin layer thickness, avoiding the issue of anode porosity blocking. After optimization, the half cell achieves low impedance and high power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Hong-Ming Tan, Chang-Gui Pan, Chao Yin, Kefu Yu
Summary: Per- and polyfluoroalkyl substances (PFASs) have gained attention for their persistence, bioaccumulation, and toxicity. Various activated carbons (ACs) show variability in adsorptive performance towards PFASs. This study comprehensively investigates the adsorption of ten PFASs on different ACs to understand their removal mechanism. Results indicate that GAC-1 and PAC-1 remove over 90% of all target PFASs, and the adsorption mechanisms involve electrostatic interaction, hydrophobic interaction, surface complexation, and hydrogen bonding.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Inorganic & Nuclear
Carla Calabrese, Valeria La Parola, Maria Luisa Testa, Leonarda Francesca Liotta
Summary: The surge in research interest has driven the design of advanced materials with antifouling and antimicrobial properties. Metal and metal oxide nanoparticles show promise as antimicrobial agents due to their high surface-to-volume ratio and nanosized structure. Stabilization of metal nanoparticles on supports like silica and titania can enhance their antimicrobial efficiency by preventing agglomeration, leading to increased biocidal activity.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Linde Ren, Jinrong Lu, Hua Liu
Summary: A study on a Fe-Cu-N multi-doped carbon catalyst for microbial fuel cells (MFCs) was conducted, which demonstrated improved power generation efficiency and chemical oxygen demand (COD) removal ratio. The electrochemical analysis showed that the Fe-Cu-N multi-doped carbon structure exhibited excellent ORR catalytic activity and stability. The synthesized catalyst offered an output power density 3.5 times higher than the control.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Sidra Shaoor Kiani, Amjad Farooq, Yasir Faiz, Attaullah Shah, Masroor Ahmad, Naseem Irfan, Muhammad Iqbal, Azeem Bin Usman, Arshad Mahmood, Mohsan Nawaz, Saira Bibi, Adnan Aziz
Summary: Impregnated activated carbons (IACs) prepared from various metal solutions showed enhanced adsorption capability for SO2 and NO2 gases compared to raw activated carbons (RAC), with a significant increase in breakthrough time. The combination of copper, zinc, silver, and molybdenum on activated carbon demonstrated the highest adsorption efficiency, achieving breakthrough times 13-25 times higher than RAC, with adsorption capacities up to 320 mg SO2/g-C and 380 mg NO2/g-C.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Chemistry, Physical
Chengyi Dai, Xuemei Li, Menghan Zhang, Yi Cui, Binran Zhao, Xiaoxun Ma
Summary: In this study, plasma cooperative catalytic synthesis of ammonia using Ni catalyst with good metal dispersion was conducted. The research successfully improved the synthesis rate of ammonia and demonstrated good catalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Zeynep Bicil, Mehmet Dogan
Summary: In this study, activated carbons were prepared from almond shells using chemical activation with zinc chloride and microwave irradiation methods under a nitrogen atmosphere. The effects of microwave irradiation times, powers, and agent ratios on the pore volumes and BET surface areas of the activated carbons were investigated. Experimental results showed that increasing microwave irradiation time, power, and agent ratio led to higher BET surface areas and total pore volumes of the activated carbons.
Article
Materials Science, Multidisciplinary
Dawei Yuan, Jinshui Chen, Xiangpeng Xiao, Baojun Han, Hao Huang, Baixiong Liu, Bin Yang
Summary: The research found that directionally solidified Cu-Fe-Cr-Ag alloy exhibited excellent mechanical properties and conductivity, with higher tensile strength and conductivity compared to upward continuously casted alloy after cold drawing and isothermal aging. The finer and more uniform Fe dendrites, Cu-Ag eutectic structure, and distribution of Ag around the material contributed to the superior comprehensive performance of the directionally solidified Cu-Fe-Cr-Ag alloy.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Energy & Fuels
Ting Zhou, Yan Huang, Junfeng Zhang, Manting Hu
Summary: The study investigated the performance and selectivity of Fe(II)EDTA-NO reduction using activated carbon supported bimetallic Fe@Cu composite (AC-Fe@Cu) for nitric oxide removal. The reduction efficiency reached 95.34% in 30 min, with 86.78% N2 selectivity, outperforming previous reduction systems. AC-Fe@Cu exhibited resilience at various pH, temperature, and O2 concentration ranges, maintaining high efficiency after multiple cycles. The bimetal configuration and atomic ratio mediated the reduction efficiency and selectivity, while the unique structure and optimal atomic ratio of Fe to Cu contributed to efficient and selective Fe(II)EDTA-NO reduction.
Article
Engineering, Chemical
Daofei Lv, Jiayu Chen, Yongwei Chen, Zewei Liu, Yuzhi Xu, Chongxiong Duan, Houxiao Wu, Ying Wu, Jing Xiao, Hongxia Xi, Zhong Li, Qibin Xia
Article
Energy & Fuels
Liqiong Wu, Guang Miao, Xiong Dai, Lei Dong, Zhong Li, Jing Xiao
Article
Engineering, Chemical
Shengjun Du, Ying Wu, Xingjie Wang, Qibin Xia, Jing Xiao, Xin Zhou, Zhong Li
Article
Engineering, Chemical
Lei Dong, Guang Miao, Xiaoling Ren, Neng Liao, Abdul Waqas Anjum, Zhong Li, Jing Xiao
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Engineering, Chemical
Shengjun Du, Xingjie Wang, Jiawu Huang, Kirlikovali Kent, Baolin Huang, Idrees Karam, Zhong Li, Jing Xiao
Summary: Researchers have developed a series of ultramicroporous starch-based carbon materials derived from low-cost starch precursors, with potassium derivative SC-K showing high uptake capacities and superior selectivities, demonstrating potential for highly selective sieving-driven separation of gases.
Article
Engineering, Chemical
Cuiting Yang, Guang Miao, Eric Sarbacker, Haoran He, Lei Dong, Bowen Wu, Guoqing Li, Michael J. Janik, Jing Xiao
Summary: This study proposes a cyclic process of selective adsorption-reactive regeneration for the desulfurization of heavy mercaptan from gasoline under ambient conditions. The process achieves high adsorption capacity and selectivity, and complete recovery through catalytic reactive regeneration.
Article
Engineering, Chemical
Shi Tu, Liang Yu, Ying Wu, Yongwei Chen, Houxiao Wu, Liuqing Wang, Baoyu Liu, Xin Zhou, Jing Xiao, Qibin Xia
Summary: A new yttrium-based ultramicroporous metal-organic framework was designed for molecular sieving separation of C3H6 from C3H8, showing high adsorption capacity and excellent separation performance.
Article
Engineering, Chemical
Lei Dong, Xiong Dai, Chong Peng, Cuiting Yang, Guoqing Li, Shibin Chen, Guang Miao, Jing Xiao
Summary: This study investigates the effective ultra-deep catalytic adsorptive desulfurization using titanium-silica gel adsorbent at low titanium loading, achieving superior capacity and high turnover frequency for DBT oxidation. The rate equation for the catalytic DBT oxidation was described and the effectiveness of the adsorbents was verified in real diesels with varied sulfur concentrations and O/S ratios. Insights on using low-cost bifunctional catalytic adsorbents for effective CADS to realize ultra-deep desulfurization of transportation fuels are provided in this work.
Article
Chemistry, Multidisciplinary
Qiongbin Dai, Wanwen Liang, Zewei Liu, Feng Xu, Qibin Xia, Xin Zhou, Jing Xiao, Zhong Li
Summary: This study developed a binder-free method for preparing granular biomass-based carbon materials (GBCMs) and examined their adsorption properties. The results showed that GBCMs had high C2H6 adsorption capacity and selectivity, making them suitable for recovering light hydrocarbons from natural gas.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Chemical
Jiawu Huang, Junjie Peng, Xuan Wei, Shengjun Du, Cuiting Yang, Jing Xiao
Summary: Atomic layer etching (ALE) using environmentally friendly electronic gas fluoromethane (CH3F) has potential for fabricating nanoscale electronic components. Adsorptive purification of CH3F can remove trace impurities and produce highly pure CH3F (>99.9999%) for the ALE process.
Article
Multidisciplinary Sciences
Shengjun Du, Jiawu Huang, Matthew R. Ryder, Luke L. Daemen, Cuiting Yang, Hongjun Zhang, Panchao Yin, Yuyan Lai, Jing Xiao, Sheng Dai, Banglin Chen
Summary: We report polydopamine-derived carbons with tailorable sub-5 angstrom micropore orifices and larger microvoids for olefin/paraffin separation. The sub-5 angstrom micropores allow the entry of olefins while excluding paraffins, achieving precise discrimination. The larger microvoids enable high ethylene and propylene capacities under ambient conditions. This study opens an avenue to exploit the sub-5 angstrom micropores in carbon for desirable size-exclusion effect.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Shibin Chen, Cuiting Yang, Xiaoying Zhou, Guang Miao, Hao Yu, Jing Xiao
Summary: The objective of this work is to investigate the adsorption separation of liquid-phase xylene isomers using ultramicroporous carbon spheres. The synthesized glucose-based adsorbent (UMC-xyl) exhibits excellent performance in p-xylene/m-xylene separation, surpassing commercial adsorbents including the industrial benchmark KBaX. The micropore diffusion model provides a better fit to the adsorption kinetics of UMC-xyl and the narrow ultramicropore size in UMC-xyl facilitates the separation of xylene isomers.
Article
Chemistry, Physical
Shengjun Du, Baolin Huang, Lin Zhu, Ying Wu, Jiawu Huang, Zhong Li, Hao Yu, Jing Xiao
Summary: This study presents a systematic pore-engineering approach to optimize the adsorptive separation of propylene/propane. It was found that carbon microspheres with moderate pore sizes, such as GC-190, exhibited outstanding selectivity and diffusion kinetics, while those with smaller pore sizes, like GC-230, showed slower diffusion rates for propylene. DFT simulation confirmed the significantly reduced diffusion energy barrier with increased pore size.
Article
Chemistry, Physical
Shengjun Du, Jiawu Huang, Abdul Waqas Anjum, Jing Xiao, Zhong Li
Summary: This study successfully prepared carbon molecular sieves with a pore size distribution centered at 4.78 angstrom using starch as a carbon source. The research demonstrates excellent separation performance and paves the way for designing a new generation of molecular sieve adsorbents with well-defined sub-nanopores.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Chemical
Qingqing Hou, Xiyi Li, Yunhong Pi, Jing Xiao
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
