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SSRN 2022年

作者： Yan, Fang Guo, Yandong Wang, Zhenlei Zhao, Linlin Zhang, Xiaochun College of Mathematics Science Bohai University Liaoning Jinzhou121013 China Innovation Academy for Green Manufacture Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China College of Chemistry and Chemical Engineering Qingdao University Shandong Qingdao266071 China

Ionic liquids (ILs)/graphene oxide (GO) membranes have been regarded as a prospective alternative in CO2 separation. However, the correlation between the microstructure of ILs/GO and CO2 separation performance is unclear. In this work, the dynamic properties and interactions for CO2/CH4 in 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]), 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Bmim][TF2N]) confined between two GO sheets with different layer spacings were studied using molecular dynamics simulation. The number density and angular orientation of cations suggest that there is a dense cation adsorption layer near GO with the imidazole rings and alkyl side chains mostly paralleled to GO surface. The strong interaction of GO-cation weakens the interaction of cations-anions, facilitating the adsorption of CO2. The overlapping distribution regions of the number density of CO2/CH4 with the cations and anions reveal that CO2/CH4 mainly distribute around the ILs area of the ILs/GO membrane, which improves the gas selectivity. The RDFs results of CO2/CH4-ILs indicate that the confined ILs/GO system is more favorable for capturing gases than bulk ILs. The stronger interaction of CO2-anions/cations and the faster diffusion of CO2 than CH4 reflect the high dissolution selectivity and diffusion selectivity for CO2/CH4 in ILs/GO membrane. In addition, it was found that increasing the layer spacing would decrease the dissolution selectivity, but could increase the diffusion selectivity. Furthermore, [Bmim][TF2N]/GO membrane is predicted to possess superior CO2/CH4 separation performance than [Bmim][PF6]/GO and [Bmim][BF4]/GO membranes. © 2022, The Authors. All rights reserved.

关键词： Molecular dynamics

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green Manufacturing Evaluation of Light-Emitting Diodes (Led) Lamps Production: Resource and Environmental Assessment

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SSRN 2024年

作者： Gao, Wenfang Zeng, Xianju Chen, Fangfang Pan, Anyu Yang, Feiming Wang, Yuting Li, Huajie Ren, Zhijun Zhang, Guangming Sun, Zhi Tianjin Key Laboratory of Clean Energy and Pollution Control School of Energy and Environmental Engineering Hebei University of Technology Tianjin300401 China National Key Laboratory of Biochemical Engineering Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341119 China Xiamen Guangpu Electronics Ltd. Xiamen361000 China Kopper Chemical Industry Corp. Ltd. Chongqing401254 China

Light-emitting diode (LED) lamps have become the mainstream lamps of the lighting industry, with practical significance such as energy savings and reducing greenhouse gas emissions. However, few studies have focused on the resource and environmental evaluation of LED lamp production processes. In this research, a green manufacturing evaluation was developed by combining resource criticality and environmental impact assessment by analysing eight typical LED lamp production processes. For resource criticality assessment, a metal criticality assessment method was built considering the special industrial parameters such as CPS (the technical level of the production plant), where the ordinary street lamp (OSL) had the most lamp evaluation index based on the higher resource consumption and Ga and In were the most critical metals. For environmental impact assessment, it was concluded that the green bulb lamp (GBL) was the most environmentally friendly lamp, and the OSL had the most serious impact on the environment. Under the comprehensive evaluation, the GBL was the best lamp because its structure was simple and the quality of the material was smaller, while the OSL was the worst lamp due to the higher quality of the material. With the green manufacturing evaluation with resource criticality assessment and environmental impact assessment, the LED lamp production process can be effectively evaluated, which can provide a basis for the material evaluation and cleaner production. © 2024, The Authors. All rights reserved.

关键词： Light emitting diodes

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Two Birds, One Stone: Simultaneous Removal of Saccharides and Metal Ions from Ionic Liquid Solution by Selective Electrodialysis

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SSRN 2023年

作者： Zhang, Shanshan Wu, Yingqiu Chen, Shangqing Wang, Huijiao Wang, Junfeng Nie, Yi Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering and Pharmacy Wuhan Institute of Technology Wuhan430205 China Beijing100083 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China

The efficient and cost-effective elimination of saccharides and metal ions solving in the ionic liquids spinning solution produced in the regenerated cellulose fibers (RCFs) manufacture is highly desirable in view of the RCF quality and IL recycling. Herein, the ‘two birds and one stone’ strategy was proposed for simultaneous removal of saccharides and metal ions solving in [Emim]Dep spinning solution by selective electrodialysis (SED). Benefiting from the electric neutrality of saccharides, the differences of IL and metal ions (Mg2+ and Ca2+) in electrostatic interaction and hydration radius, the permeation ratio of IL (PIL), removal ratios of saccharides (Rs), Mg2+ (RMg2+) and Ca2+ (RCa2+) could reach up to 96.0%, 94.8%, 95.0% and 95.0%, respectively in the practical ionic liquid spinning solution. The structure of [Emim]Dep after SED process was similar to that of pristine, indicating the benign stability during the SED process. Interestingly, the presence of saccharides was beneficial to the retention of metal ions because of the complexation between saccharides and metal ions. Moreover, the membrane fouling process and mechanism were also investigated by the determination of ion exchange capacity and the characterization of morphology and structure. Along this line, the corresponding cleaning strategy was raised and the performance of the membrane did not change notably within 5-times recycle. Thus, this work put forward a facile and cost-effective method for the one-step removal of saccharides and metal ions and the purification of ionic liquids, which could be popularized in the fields of biomass pretreatment and dissolution using ILs. © 2023, The Authors. All rights reserved.

关键词： Metal ions

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Extremely High Corrosion Resistance of Znxni1–Xcr2o4 Spinel in Naf-Kf-Alf3 Bath

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SSRN 2022年

作者： Shi, Zhongqi Ge, Bangzhi Liu, Rongdi Wei, Zhilei Wang, Ke State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University Xi’an710049 China Zhongyuan University of Technology Zhengzhou450007 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Huizhou Institute of Green Energy and Advanced Materials Guangdong Huizhou516081 China

A new system for aluminum smelting sidewall materials, spinel structured ZnxNi1– xCr2O4 (x = 0 – 1), are prepared and the corrosion-resistance enhancement is investigated. This study proves that Zn plays two roles in ZnxNi1– xCr2O4 (x = 0 – 1). Firstly, Zn2+ tune the surface energy of spinel NiCr2O4 resulting in the octahedral grains, which suppresses cation diffusion in the corrosion process. Secondly, Zn2+ stabilizes the Cr3+ in the spinels. As a result, the Zn0.5Ni0.5Cr2O4 spinel displays a record-low corrosion rate of ~0.007 cm·a–1 in NaF-KF-AlF3 bath at 800 °C comparing with other sidewall materials. © 2022, The Authors. All rights reserved.

关键词： Corrosion resistance

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N, O Co-Doped Mesoporous Coal-Derived Carbon Material with Enhanced Energy Storage Performance for Supercapacitors

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SSRN 2022年

作者： Fu, Xiaoping Guo, Wen Chen, Long Wang, Gang Liu, Yanyan Gu, Tiantian Yu, Feng Guo, Xuhong Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical Engineering Shihezi University Shihezi832003 China State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai200237 China

Carbon-based materials are widely used as electrode materials for energy storage devices. However, achieving high-performance carbon materials by using facile fabrication process with abundant precursors is still challenge. Herein, a nitrogen/oxygen-doped mesoporous coal-based carbon material (N/O-DMCC) with high energy storage performance for electric-double layer capacitors (EDLC) and zinc-ion hybrid supercapacitor (ZHS) was prepared with raw coal as precursor through a facile pyrolysis treatment. The treatment endows the N/O-DMCC a high surface area, mesoporous structure, and modified surface chemistry. As a result, the obtained N/O-DMCC exhibits improved energy storage capacity (376.5 F g-1 at 0.5 A g-1), impressive cycling stability (5.2% loss after 10,000 cycles) and excellent rate capability (305.7 F g-1 at 10 A g-1). Accordingly, the fabricated EDLC and ZHS show enhanced energy storage performance by delivering 23.06 Wh kg-1 at 500 W kg-1 and 141.6 mAh g -1 at 10 A g-1, respectively, demonstrating the huge potential application of the as-prepared coal-derived carbon material for energy storage devices. © 2022, The Authors. All rights reserved.

关键词： Supercapacitor

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Sequential Assembly Enabled Surface Precise Imprinting on Janus Nanosheets for Highly Specific Separation of Adenosine 5'-Monophosphate

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SSRN 2022年

作者： Pan, Jianming Wang, Pan Ma, Yue Tian, Xiaohua Niu, Xiangheng Luo, Jianquan School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang212013 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing10090 China

Precise control of imprinting processes and reasonable selection of molecularly imprinted polymers’ (MIPs) carriers are essential for realizing highly selective and fast separation. In this work, Janus polymer nanosheets (J-PNs) with different wettabilities on two sides were synthesized by self-polymerizing dopamine based on octadecylamine (ODA) lamellae with a bilayer structure, followed by a sequential imprinting assembly of low pKa boronic acid and pyrimidine base monomers on the hydrophilic side of J-PNs to prepare Janus imprinting sorbents (J-MIPs) for highly specific separation of adenosine 5'-monophosphate (AMP). The sequential assembly strategy integrated two different functional monomers together to simultaneously interact with the surrounding template AMP molecule and to precisely control the imprinting site orientation, enabling the resulting J-MIPs with strong and specific binding toward AMP. Janus amphiphilic J-MIPs can be well fixed at the dodecane/water interface, which was benefit for their fast recycle and simple regeneration, and the uptake amount of the fifth adsorption/elution cycle was 86.08% of the first one. The equilibrium time and maximum adsorption capacity of tailor-made J-MIP were 4.0 h and 13.69 μmol g -1 at 298 K, respectively. Taking the advantage of cooperative multi-point interaction, binding sites with high affinity to AMP accounted for about 76.71% of the total sites, and the high imprinting factor (2.182) of the J-MIP against non-imprinted counterpart was observed. In addition, 61.30% of AMP in spiked human serum sample can be selectively extracted by J-MIPs, due to the highly specific receptor sites from sequential imprinting assembly. © 2022, The Authors. All rights reserved.

关键词： Nanosheets

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Techno-Economic Analysis of Small-Scale Ammonia Production Via Sorption-Enhanced Gasification of Biomass

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SSRN 2024年

作者： Dziva, Godknows Luan, Chuanbao Ding, Guangchao Boré, Abdoulaye Kouakou, Kouame Jean Ives Tembo, Tinashe Ullah, Atta Zaman, Muhammad Li, Songgeng Zeng, Liang Key Laboratory for Green Chemical Technology Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin300072 China State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Tianjin Key Lab of Biomass/Wastes Utilization School of Environmental Science and Engineering Tianjin University Tianjin300072 China Lehtrar Road P.O. Nilore Islamabad45650 Pakistan

Biomass gasification is a green and efficient pathway for lowering the carbon footprint of ammonia production. Decentralized, small-scale biomass gasification plants ( © 2024, The Authors. All rights reserved.

关键词： Ammonia

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Pompon-Like Ni Doped Zno Mesoporous Microspheres with Superior No2 Sensing Properties at Room Temperature

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SSRN 2023年

作者： Fu, Yuehao Wang, Hong Liu, Di Wan, Jiawei Zeng, Zhipeng School of Materials Science and Engineering Sichuan University of Science & Engineering Zigong643000 China Material Corrosion and Protection Key Laboratory of Sichuan Province Sichuan University of Science & Engineering Zigong643000 China Department of Chemistry Tsinghua University Beijing100084 China State Key Laboratory of Biochemical Engineering CAS Center for Excellence in Nanoscience Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Rapid detection of NO2 at room temperature plays a significant role in industrial production and daily life. Herein, the hierarchical pompon-like Ni doped ZnO (Ni-ZnO) mesoporous microspheres composed of abundant porous nanosheets were prepared by a facile solvothermal method. For Ni-ZnO composites based sensors, Ni doping not only reduced their working temperature but also enhanced their sensitivity. The test results suggested that the Ni-ZnO-0.03 based sensor showed outstanding gas-sensing properties toward 20 ppm NO2 at 25°C, such as high response (263), speedy response-recovery time (36, 94 s), excellent selectivity and long-term stability. Moreover, the sensor also possessed a low theoretical detection limit of 9 ppb toward NO2 at 25°C. The superior NO2 sensing properties of Ni-ZnO nanostructure composites could owe to the hierarchical and mesoporous structure, high specific surface area as well as increased oxygen vacancies. © 2023, The Authors. All rights reserved.

关键词： Room temperature

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Fabrication and Application of Graphdiyne-based Heterogeneous Compositions:from the View of Interaction

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Chemical Research in Chinese Universities 2021年第6期37卷 1158-1175页

作者： QI Qi XU Lekai DU Jiang YANG Nailiang WANG Dan School of Materials Science and Engineering Henan Province Industrial Technology Research Institute of Resources and MaterialsZhengzhou UniversityZhengzhou450001P.R.China Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou450000P.R.China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190P.R.China University of Chinese Academy of Sciences Beijing100049P.R.China

Graphdiyne(GDY)has the unique feature in the topological ordered arranged sp-and sp^(2)-hybridized carbon atoms,thus deriving a series of 2D *** to inhomogeneousπ-bonding and carbon orbital overlap between different hybrid carbon atoms,GDY possesses a natural band gap with a Dirac cones *** GDY exhibits semiconductor property with a conductivity of 2.516×10^(−4) S/m at room *** topological distribution of alkyne and benzene bonds of GDY makes its surface charge distribution extremely uneven,which produces high intrinsic activity for further *** unique molecular structure endows the specific interaction with various species,such as ions,atoms,molecules and nanoparticles,showing excellent charge transport capability and unique advantages in mass transfer and energy *** the view of the interaction principle between GDY and different compositions,we summarized the application of GDY-based materials in the fields of catalysis,energy conversion and storage,biological detection and so on.

关键词： Graphdiyne Two-dimensional material Carbon material Interaction Hetero-composition

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A Facile Synthesis of Iron Single-Atom Electrocatalyst for High-Performing Oxygen Reduction Reaction and Remarkable Rechargeable Zinc-Air Battery

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SSRN 2023年

作者： Zhang, Yuanyuan Lu, Fenghong Fan, Kaicai Zhao, Jiayi Wang, Zumin Zong, Lingbo Key Laboratory of Eco-chemical Engineering College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao266042 China College of Materials Science and Engineering Qingdao University of Science and Technology Qingdao266042 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences 1 North 2nd Street Zhongguancun Haidian District Beijing100190 China

Iron-based single-atom catalysts (SACs) are considered to the most promising catalysts to replace Pt for efficient oxygen reduction reaction (ORR). However, the precise synthesis of high-performance SACs and the understanding of their ORR origin remain challenging. In this work, microporous nitrogen-doped carbon with abundant and accessible atomically dispersed N-coordinated Fe sites (Fe-N-C) is prepared by molecular-confined coupling pyrolysis strategy. The Fe-N-C exhibits excellent ORR activities in acid (E1/2 of 0.78 V vs. RHE) and alkaline (E1/2 of 0.91 V vs. RHE) electrolytes. When integrated into a rechargeable aqueous Zinc-air battery (ZAB), both large specific capacity (770 mAh g−1) and high peak power density (240 mW cm-2) are achieved. Remarkably, the as-prepared ZAB presents amazing charge-discharge cycle performance of 1600 h at the large current density, which is 52.5 times of that using Pt/C+RuO2. Furthermore, all-solid-state ZAB delivers ultra-robust cycling stability even under bending. This work may advance a critical step towards the design of rational and controlled preparation of remarkable and ultra-stable catalysts. © 2023, The Authors. All rights reserved.

关键词： Molecular oxygen

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