Article
Thermodynamics
Rujie Wang, Shanshan Liu, Qiangwei Li, Shihan Zhang, Lidong Wang, Shanlong An
Summary: Blended amine solvents, comprising N,N-dimethylcyclohexylamine (DMCA) and N-methylcyclohexyamine (MCA), showed rapid absorption rate, large CO2 capacity, and efficient regeneration for CO2 capture. The total mass transfer coefficient of CO2 in DMCA-MCA was higher than that of 5 M MEA, and the total regeneration energy of DMCA-MCA blend was significantly lower than 5 M MEA. This novel solvent could be a potential alternative for CO2 capture.
Article
Energy & Fuels
Chunyan Ma, Nan Wang, Nannan Ye, Xiaoyan Ji
Summary: The study compared the CO2 absorption capacity of three hybrid solvents based on [Bmim][OAc] and different cosolvents, with [Bmim][OAc]-DEPG250 showing the highest absorption capacity. The addition of DEPG250 significantly reduced the viscosity while maintaining comparable absorption capacity. Additionally, using [Bmim][OAc]-DEPG250 as a solvent resulted in a lower CO2 capture cost compared to aqueous amine solutions due to reduced utility costs.
Article
Energy & Fuels
Bita Karami, Ahad Ghaemi, Shahrokh Shahhosseini
Summary: In this study, a novel hybrid solvent based on DESs was developed for CO2 separation. Different DESs added to DEA solution showed varying CO2 absorption performance and mass transfer characteristics. Hydrodynamic studies revealed a decrease in bubble size with the addition of DES, and partial replacement of water resulted in improved CO2 capture efficiency.
Review
Chemistry, Physical
Monika Kumari, Fernanodo Vega, Luz M. Gallego Fernandez, Krushna Prasad Shadangi, Naveen Kumar
Summary: Increase in CO2 concentration in the atmosphere is a major concern for researchers. Chemical absorption, particularly using amines, has been found to be an effective method for CO2 capture. The absorption capacity of amines depends on various factors including reaction conditions and amine structure. This report reviews the structural dependence of amines on their absorption capacity and compares the effects of different structural changes.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Green & Sustainable Science & Technology
Rattanaporn Apaiyakul, Prathana Nimmanterdwong, Thitiya Kanchanakungvalkul, Papitchaya Puapan, Hongxia Gao, Zhiwu Liang, Paitoon Tontiwachwuthikul, Teerawat Sema
Summary: This study explored the potential of highly concentrated AMP-PZ-MEA solvent for CO2 capture. The results showed that the solvent tends to precipitate at high concentrations and loading of CO2, but by adjusting the ratio of amine components, the total amine concentration and CO2 absorption capacity can be increased.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Engineering, Chemical
Ehsan Heidaryan, Babak Aghel, Sasan Sahraie, Mahmoud Maleki
Summary: This study investigated the effects of temperature, solvent flow rate, and gas flow rate on carbon dioxide absorption and liquid-side volumetric mass transfer coefficient in a microreactor using various solvents. Ethylene glycol achieved the highest absorption (91.57%) and the highest klav value (18.2 s-1) at 15 degrees C, indicating its potential as an alternative solvent for carbon dioxide absorption applications.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Review
Chemistry, Applied
Lu Wang, Chaorong Qi, Wenfang Xiong, Huanfeng Jiang
Summary: Carbon dioxide (CO2) is not only the main greenhouse gas but also an ideal C1 feedstock in organic synthesis. The synthesis of organic carbamates using CO2 as a phosgene alternative has received extensive attention. This review summarizes the recent advances in the synthesis of organic carbamates from CO2 using different multicomponent reaction strategies and presents future perspectives and challenges.
CHINESE JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Analytical
Silvia Mena, Esteve Ribas, Clara Richart, Iluminada Gallardo, Jordi Faraudo, Scott K. Shaw, Gonzalo Guirado
Summary: The paper focuses on the role of carbon dioxide in controlling the Earth's temperature and the environmental problems caused by its increased concentration in the atmosphere. It discusses the use of ionic liquids for efficient CO2 capture and conversion, utilizing electrochemical, spectroscopic, and molecular dynamics techniques to understand the reduction mechanism under various conditions. The research opens up possibilities for theoretical-experimental approaches to determine the CO2 reduction mechanism and the dependency of product formation on the electrode material and solvent used.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Review
Biochemistry & Molecular Biology
Iwona Cichowska-Kopczynska, Bartosz Nowosielski, Dorota Warminska
Summary: Nowadays, researchers are striving to find a solution to the problem of global warming, with a focus on reducing carbon dioxide emissions. The use of alkanolamines for carbon dioxide capture is problematic due to its corrosive nature, volatility, and high energy demand. Deep eutectic solvents (DESs) have emerged as a potential alternative, capable of physically and chemically absorbing carbon dioxide. Different strategies, such as the addition of water or co-solvents, have been proposed to enhance CO2 absorption using DESs. This review presents an overview of DESs, their impact on CO2 absorption, and practical considerations for their use in CO2 separation.
Article
Engineering, Chemical
Zhenbin Xu, Tingting Wang, Jianmeng Wu, Lulu Wang, Xiangping Zhang, Haifeng Dong, Changyu Sun
Summary: This paper systematically investigates the two-phase flow and mass transfer process of CO2 and [C2OHmim]-[Lys]/MDEA mixed aqueous solution in a T-shaped microchannel. The effects of ionic liquid concentration and two-phase flow ratio on bubble length, specific surface area, gas holdup, and mass transfer coefficient are experimentally studied. The results show that the mixed solution of [C2OHmim]-[Lys]/MDEA significantly enhances two-phase mass transfer compared to a single N-methyldiethanolamine aqueous solution. New correlations for predicting the bubble initial length and the volumetric mass transfer coefficient are proposed based on the experimental data.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Diego Gomez-Diaz, Abel Muniz-Mouro, Jose M. Navaza, Antonio Rumbo
Summary: This study analyzes the behavior of aqueous solutions of N,N-dimethylethylenediamine as a chemical solvent for carbon dioxide separation by gas-liquid absorption. The experimental work focuses on comparing diamine and amines blend solvent, and explores the influence of amine type, concentration, ratio between different amines, and gas flow rate on absorption kinetics.
Article
Chemistry, Physical
Xinrui Zhu, Jingshun Zhang, Zhengkun Zhang, Fang Liu, Yuhang Hu, Yi Liu, Tiegang Ren, Li Wang, Jinglai Zhang
Summary: Amino-specified pyrazolium ionic liquid (APEPzBr) is synthesized by two steps, and it is found that the product of the first step can also catalyze the coupling reaction of CO2 and epoxides. The ability is attributed to the strong absorption of CO2 and robust electrophilic activation of the product, as confirmed by density functional theory and C-13 NMR measurement, with further elucidation of the difference between the product and APEPzBr using ELF and AIM analysis.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Energy & Fuels
Prakash D. Vaidya, Shaurya Mohan, Namrata Upreti
Summary: The kinetics of CO2 absorption in AHPD/PZ mixtures were investigated in this study, revealing a second-order rate constant of 28,685 m3(kmol s)-1 for the reaction between CO2 and PZ. Various properties of the blend were measured, including density, viscosity, and CO2 diffusivity and solubility. The efficiency of CO2 separation in a continuous, closed-loop system using the AHPD/PZ blend was found to be 62%.
Article
Engineering, Environmental
Mahdi Abbasian, Hesam Najibi
Summary: This study investigates the use of aqueous solutions of amino acids for CO2 absorption. The kinetics of CO2 absorption in sodium serinate solutions and their blend with piperazine were studied. The results show that sodium serinate solution can be used as a CO2 absorbent, and adding piperazine to the solution can improve the CO2 absorption efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Engineering, Chemical
Xiaopeng Li, Jucang Ke, Rui Li, Peng Li, Qingxiang Ma, Tian-Sheng Zhao
Summary: This study conducts a thermodynamic analysis of the CO2 hydrogenation process, investigates the catalytic performance of different catalysts, and provides a comprehensive summary of reaction conditions and mechanisms. It also suggests strategies to improve CO2 conversion and ethanol selectivity.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Chenyu Wang, Hu Shi, Xin Wang, Lei Song, Yuan Hu
Summary: An eco-friendly and bio-based ternary hybrid hydrogel consisting of carrageenan, vermiculite, and dimethyl methyl phosphate (DMMP) was prepared through a facile one-pot method. The rheological tests showed that the hydrogel exhibited power-law fluid behavior. It was found that the optimal formulation of the hydrogel included 1 wt% carrageenan, 2 wt% DMMP, and 4 wt% vermiculite. Firefighting experiments demonstrated that the hydrogel could effectively extinguish fires by stopping chain reactions and reducing the temperature of combustion. The improved fire extinguishing efficiency was attributed to the combined effect of each component: carrageenan provided viscosity, DMMP acted as a free radical scavenger, and vermiculite acted as a barrier layer preventing resurgence.
FIRE AND MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Hu Shi, Yue Sun, Zeshuai Yao, Min Bai
Summary: Histidine tautomeric and protonation behaviors play crucial roles in controlling the structure and aggregation properties of misfolding peptides. Molecular dynamics simulations reveal that various protonation states can influence the stability and structural properties of Afi fibrils. This study provides insights into the histidine protonation behaviors and sheds light on the origin of protein folding and misfolding.
ACS CHEMICAL NEUROSCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Guangyu Wang, Hao Wu, Yiming Liu, Yiwei Pang, Junsheng Hao, Fangqin Cheng, Aniu Qian, Hu Shi
Summary: We have identified the role of -CF3 terminations in the surface structure of Ti3C2Tx during delamination using ethanol and water as solvents. Ethanol-treated -CF3-terminated Ti3C2Tx exhibits enhanced capacitive properties in ionic liquid, including prevention of nanoflake aggregation, hydrophobicity, and small size, compared to water-treated Ti3C2Tx in both aqueous and ionic liquid electrolytes.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yue Sun, Zeshuai Yao, Guangyu Wang, Lisha Wang, Min Bai, Hu Shi
Summary: Zn2+ plays an important role in promoting the aggregation and formation of amyloid plaques. The presence of Zn2+ facilitates the dimerization of Aβ, with stronger binding properties compared to the dimerization of Aβ with zAβ and zAβ with zAβ. Specific residues and the orientation of the imidazole ring's N atom in histidine residues are key factors in these systems. Different driving forces were observed in each system. This study contributes to the understanding of the interaction between Aβ dimers and Zn2+, providing insights into Zn2+-induced nucleation mechanisms.
Article
Chemistry, Physical
Jing Wang, Ying Zhang, Wenhao Wang, Lina Yin, Mo Xie, Jin Yong Lee, Hu Shi, Hongguang Liu
Summary: In this study, two new molecular diameters are proposed and compared with other known diameter parameters. The results show that one of the new diameters, Dn', has the best correlation with the penetration barriers of small gas molecules on PCMMs, indicating its universal applicability in predicting the gas separation preference on different PCMMs.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Houbing Zou, Hu Shi, Shijiao Hao, Yajuan Hao, Jie Yang, Xinxin Tian, Hengquan Yang
Summary: In this study, the oil-water interfaces of Pickering emulsions were utilized to regulate catalytic selectivity of hydrogenation reactions by controlling the spatial distribution of metal nanoparticles at the droplet interfaces. The remarkable interfacial microregion-dependent catalytic selectivity was found to be attributed to the microenvironments of the coexistence of water and organic solvent at the droplet interfaces, altering the adsorption patterns of the reactants on the metal nanoparticles. This strategy provides new insights into liquid-liquid interfacial reactions and offers a way to enhance catalytic selectivity.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Zhidong Yang, Hongxia Zhang, Jianghong Zhao, Hu Shi, Pengju Yang
Summary: Photoreduction of CO2 to produce carbon-neutral fuels is a sustainable method, but developing robust catalysts for selective CO2 reduction is still challenging. This study presents a hybrid photocatalyst (Ni(OH)(2)/NC) formed by encapsulating nitrogen-doped carbon and Ni(OH)(2), which demonstrates enhanced selectivity and activity for CO production under visible light. The modification of NC can modulate the electronic structures of Ni(OH)(2) and promote the adsorption and activation of CO2, leading to superior CO2-to-CO photoreduction activity. This work provides a new avenue for modulating the selectivity and activity of CO2 reduction over transition metal hydroxides or oxide catalysts.
Article
Engineering, Environmental
Yongteng Qian, Jianmin Yu, Fangfang Zhang, Zhengxin Fei, Hu Shi, Dae Joon Kang, Huan Pang
Summary: Construction of cost-efficient and high-performance overall water splitting electrocatalysts for generating hydrogen and oxygen has recently gained increasing research attention. In this study, hierarchical CoS2/MoS2 nanoflakes were successfully decorated on graphene, forming an efficient electrocatalyst CMSGr for overall water splitting. The fabricated CMSGr composites exhibit enhanced hydrogen and oxygen evolution reaction activity due to their distinct hierarchical flakes morphology and optimized interfacial microenvironment between CoS2 and MoS2. Theoretical calculations confirm that introducing CoS2 into MoS2 can greatly tune the electronic structure and optimize the adsorption energy during water splitting.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Danping Tian, Ruipeng Hao, Xiaoming Zhang, Hu Shi, Yuwei Wang, Linfeng Liang, Haichao Liu, Hengquan Yang
Summary: Bioinspired multicompartment architectures are desired in synthetic biology and metabolic engineering due to their cell-like structures and ability of assembling catalytic species. This study describes a Pickering double emulsion-directed interfacial synthesis method to fabricate multicompartmental MOF microreactors, enabling tailor-made inner architectures and selective permeability. The microreactor demonstrates enhanced efficiency in chemo-enzymatic cascade reactions, showcasing its potential in complex cellular transformations.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Qi Zhang, Ya Zhang, Hongxia Zhang, Jianghong Zhao, Linfeng Liang, Yamin Huang, Zhanfeng Zheng, Pengju Yang, Hu Shi, Hengquan Yang
Summary: This study discovered that eosin Y (EY) aggregates have strong red/near-infrared (NIR) light absorption due to electronic couplings between adjacent molecules. The aggregates also facilitate exciton dissociation and charge separation, effectively suppressing charge recombination. The quantum yield of hydrogen production by EY aggregates reaches 23.6% at 610 nm. Furthermore, this aggregation-induced red/NIR-light photocatalysis phenomenon was observed in a series of organic dyes. Notably, the quantum yield of cobalt phthalocyanin aggregates for hydrogen production is calculated to be 17.2% at 800 nm, the highest value reported for NIR-light-driven H2-evolution systems (>= 800 nm).
Article
Green & Sustainable Science & Technology
Baoyue Cao, Hu Shi, Qiangqiang Sun, Yan Yu, Liangliang Chang, Shan Xu, Chunsheng Zhou, Hongxia Zhang, Jianghong Zhao, Yanyan Zhu, Pengju Yang
Summary: It was found that Na modification benefits the synthesis of Ru single-atomic catalyst anchored on GONa through hydrothermal process. The strong metal-support interaction facilitates electron transfer, lowering the electron density of Ru SA. The Ru SA/GONa exhibits exceptional HER activity and achieves outstanding photocatalytic hydrogen production when using Eosin Y as a light harvester.
Article
Energy & Fuels
Sahar Taherkhani, Fatemeh Ghamari, Jalal Arjomandi, Atefeh Nasri, Hu Shi
Summary: An efficient in-situ electrosynthesized route was used to design novel reduced graphene oxide/polyindole (rGO/PIND) nanocomposite electrodes decorated by α-MnO2 and V2O5 nanostructures. V2O5 nanoparticles were synthesized through laser ablation in liquid (LAL) technique and α-MnO2 nanostructure was constructed by a solid-state reaction method. The fabricated electrodes were characterized and two types of supercapacitors were successfully fabricated and tested.
Article
Chemistry, Physical
Yue Sun, Changgui Li, Jinping Wang, Hu Shi
Summary: In this study, the impact of histidine on protein structure was investigated through 19 replica exchange molecular dynamics simulations. It was found that any protonated state promotes the formation of β-sheet structures, with (pεε) and (δεp) being the most common conformations. Furthermore, H6 and H14 were found to be more essential than H13.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Environmental
Dan Chang, Lin Li, Xiaorui Dong, Hu Shi, Shuo Wang, Zhonghua Zhao, Liuliu Lv, Yongxing Yang, Lihong Shi
Summary: The development of portable, easy-to-use, and cost-effective detection platforms is crucial for environmental monitoring and food safety inspection. In this study, we proposed a smartphone-based handheld sensing strategy that integrates nitrogen-doped carbon dots (NCDs) test strip using three-dimensional (3D) printing technology for visual detection of Hg2+. The handheld detection platform showed a great linear response between the R/B value and Hg2+ concentration in the range of 0 μM-125 μM, with a detection limit of 0.024 μM. The platform was successfully applied for quantitative detection of Hg2+ in real water samples and biological systems.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Jing Wang, Ying Zhang, Wenhao Wang, Lina Yin, Mo Xie, Jin Yong Lee, Hu Shi, Hongguang Liu
Summary: In this study, two new molecular diameters, calculated using the circumscribed-cylinder method and the group-separated method, were proposed and compared with other existing diameter descriptors. The results showed that the newly defined diameters had strong correlations with the penetration barriers of gas molecules on porous carbon-based monolayer membranes. The circumscribed-cylinder method was found to be a simple yet effective approach for determining molecular diameter.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)