JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2024
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IF 3
Zou Yanyan,Pau Dennis,Yi Linlin,Li Yaoqiang,Li Kaiyuan
13X zeolite–calcium oxide (CaO) composite capture agent application in the pyrolysis recovery of polyvinyl chloride (PVC)-based waste cables was investigated in this research to elucidate the agent’s efficiency in capturing chlorine (Cl) and carbon (C) during pyrolysis. The 13X zeolite–CaO mixture is subjected to separate pyrolysis of the PVC-based cable outer sheath in experimental furnaces of simulated solar-powered and thermogravimetry. Subsequently, a range of spectroscopic techniques are employed to quantitatively analyze the gaseous and solid products resulting from the pyrolysis process. Through X-ray fluorescence, total carbon, and other analyses, the research outcomes demonstrated that the capture agent exhibits superior Cl and C capture performance compared to using a single agent for plastic pyrolysis. The yield of Cl element in the solid residue has increased significantly by 130–140% under the presence of optimized composite capture agent. By determining the dynamic changes of gaseous and solid products during the cable outer sheath pyrolysis, the influence of the capture agent on the redistribution and transformation mechanisms of Cl and C elements was identified, and it was found that contaminating volatiles were well immobilized in the solid residue. This research provides a new solution for efficient Cl and C capture in the pyrolysis recovery of waste cables and determines the fixation and transformation mechanisms of Cl and C elements by the composite capture agent, indicating a potential for feasible and sustainable resource utilization of waste cables.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 5
·2024
·
IF 4.6
Jiawei Wang,Yanli Chen,Yunfeng Zhao,Chongyan Yao,Yibo Liu,Xizheng Liu
Lithium-air batteries (LABs) have attracted extensive attention due to their ultra-high energy density. At present, most LABs are operated in pure oxygen (O2) since carbon dioxide (CO2) under ambient air will participate in the battery reaction and generate an irreversible by-product of lithium carbonate (Li2CO3), which will seriously affect the performance of the battery. Here, to solve this problem, we propose to prepare a CO2capture membrane (CCM) by loading activated carbon encapsulated with lithium hydroxide (LiOH@AC) onto activated carbon fiber felt (ACFF). The effect of the LiOH@AC loading amount on ACFF has been carefully investigated, and CCM has an ultra-high CO2adsorption performance (137 cm3g−1) and excellent O2transmission performance by loading 80 wt% LiOH@AC onto ACFF. The optimized CCM is further applied as a paster on the outside of the LAB. As a result, the specific capacity performance of LAB displays a sharp increase from 27,948 to 36,252 mAh g−1, and the cycle time is extended from 220 h to 310 h operating in a 4% CO2concentration environment. The concept of carbon capture paster opens a simple and direct way for LABs operating in the atmosphere.Keywords:lithium-air battery;CO2capture;long-cycle;carbon capture paster
研究领域:
材料科学
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能源技术
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DOI
PubMed
高影响因子
ChemSusChem
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2024
·Vol. 17
·期 16
·e202301951
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IF 7.5
Kaili Wang,Zhaowei Zhang,Shenyao Wang,Lili Jiang,Haoran Li,Congmin Wang
Graphical CO 2 absorption capacity, desirable absorption enthalpy and excellent reversibility were achieved through dual-tuning azole-based ionic liquids for CO 2 capture from ambient air A strategy of tuning azole-based ionic liquids for reversible CO 2 capture from ambient air was reported. Through tuning the basicity of anion as well as the type of cation, an ideal azole-based ionic liquid with both high CO 2 capacity and excellent stability was synthesized, which exhibited a highest single-component isotherm uptake of 2.17 mmol/g at the atmospheric CO 2 concentration of 0.4 mbar at 30 °C, even in the presence of water. The bound CO 2 can be released by relatively mild heating of the IL-CO 2 at 80 °C, which makes it promising for energy-efficient CO 2 desorption and sorbent regeneration, leading to excellent reversibility. To the best of our knowledge, these azole-based ionic liquids are superior to other adsorbent materials for direct air capture due to their dual-tunable properties and high CO 2 capture efficiency, offering a new prospect for efficient and reversible direct air capture technologies.
CAS / MDL:
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Kaili Wang,Jiayi Bai,Zhenyu Zhao,Zhaowei Zhang,Weiqi Mao,Lili Jiang,Haoran Li,Congmin Wang
The increasing CO 2 concentration in the atmosphere has caused a lot of environmental problems. However, absorbents for highly efficient and reversible carbon capture, especially direct air capture, are still under development. Herein, a strategy of improving the CO 2 absorption and desorption behavior of a kind of imidazole-based ionic liquid for reversible CO 2 capture from ambient air via hydrogen bonding interaction was reported. By adding different hydrogen bond donors, the CO 2 capacities and absorption enthalpies of imidazole-based IL ([N 2224 ][Im]) were well tuned. Between them, [N 2224 ][Im]-Car exhibited a relatively high CO 2 capacity at the atmospheric CO 2 concentration of 0.4 mbar at 30 °C up to 0.6 mol CO 2 per mol IL and excellent reversibility. Compared with pure [N 2224 ][Im], the regeneration performance of [N 2224 ][Im]-Car was immensely enhanced, making it more promising for energy-efficient CO 2 capture and practical application in direct air capture.
CAS / MDL:
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry B
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2018
·Vol. 6
·期 42
·6831-6841
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IF 4.776
Lin Huang,Xin-Hua Liu,Xiao-Hong Zhang,Lei Tan,Chuan-Jun Liu
Bacterial infection is posing a great threat to human life, and constructing a platform to capture or kill the bacteria attached on a material surface is of particular significance. Herein, a nano-topographic material surface (SiNW-p-ppix@CDm) has been successfully synthesized based on silicon nanowire (SiNW) arrays modified with a random copolymer, which was decorated with photosensitive protoporphyrin IX (ppix) and β-CD-mannose7 (CDm). The as-prepared surface exhibits a highly efficient bacterial capture, which is based on the co-capture function between the SiNW topographic surface and the bacterial attachment molecule CDm, and sterilization of ppix under irradiation by 630 nm light. The Gram-negative bacterium Escherichia coli (E. coli) was adopted to evaluate the surface bactericidal efficiency. Finally, the killing efficiency can be proved to be 96.7% from fluorescence microscopy after staining with the live/dead bacterial viability kit. The reason for sterilization is that the bacterial cell wall had been split by the reactive oxygen species (ROS), which could be demonstrated via scanning electronic microscopy (SEM). This functional substrate could be used for bacterial enrichment apparatus such as used in water quality monitoring, and even in constructing clinical antibacterial materials.
研究领域:
生物材料学
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微生物学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Fengsheng Liu,Tao Wang,Hao Dong,Weishan Liu
This study aimed to improve the carbon dioxide (CO 2 ) capture and kinetics performance for direct air capture (DAC) while demonstrating the amine grafting reaction principles and its constraints using N-(2-aminoethyl)ethanolamine (AEEA) to functionalize coordinatively unsaturated metal sites in MIL-100(Fe), UiO-66(Zr), and MIL-100(Cr). Grafting experiments indicated that the grafting process is the reaction between metal sites and secondary amines of AEEA , while MOFs with high surface area and low acidity can effectively promote amine grafting without destroying the active site. Moreover, the adsorbed CO 2 amounts of MF-Cr-AEEA at 400 ppm were 1.91 mmol/g of −25 °C and 2.42 mmol/g of 0 °C, and the structural decomposition temperature exceeded 400 °C, demonstrating excellent thermal and cold stability. As a result of the better crystal and surface structure, the internal heat and mass transfer processes were accelerated, resulting in low semi-adsorption times below 21 min. Moreover, CO 2 capture cycles were established at 25 °C for adsorption and 80 °C for desorption. The results show that the adsorption capacity of MF-Cr-AEEA remained 1.86 mmol/g after seven cycles, demonstrating low renewable energy consumption and high stability.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2021
·Vol. 9
·期 12
·7903-7912
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IF 12.732
Zhiming Zhang,Hong Wu,Ying Li,Yue Liu,Chenliang Cao,Hongjian Wang,Meidi Wang,Fusheng Pan,Zhongyi Jiang
Graphene oxide (GO) laminar membranes with fast water-transport nanochannels hold great promise for water-selective molecular separations, but the water-capture ability of membrane surfaces limits the separation performance. Herein, we engineered water-capture coatings on GO laminar membranes using structurally tunable tannic acid (TA) nanoaggregates as building blocks via a bottom-up method, acquiring heterostructured GO membranes for alcohol dehydration. The abundant oxygenated functional groups of TA coatings captured water from alcohol aqueous solutions and enhanced the surface water-capture capacity by up to 309%. We manipulated the surface water-capture ability by regulating the aggregation structure and the subsequent assembly process of the TA nanoaggregates. By virtue of the synergistic effect of the enhanced surface water-capture ability and fast water-transport GO nanochannels, the optimized heterostructured GO membrane exhibited high permeation flux of 9988 g m−2 h−1 and a superior separation factor of 4424 for n-butanol dehydration. This study provides a novel avenue to high-performance GO membranes with rationally designed heterostructures.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Shi-Xu Wang,Yun-Xin Huang,Hao Wang,Yao-Yao Lu,Wen-Long He,Jing Li,Nian-Si Fan,Bao-Cheng Huang,Ren-Cun Jin
Exploiting phosphorus resources from waste streams such as municipal wastewater is essential for their recycling and utilization. However, common practice on phosphorus recovery via main-stream biological phosphorus removal and side-stream phosphorus precipitation still faces great challenges such as organic mineralization induced CO 2 emission and aeration caused energy consumption. In this work, ferrihydrite and magnetite were respectively dosed into bioflocculation organic carbon capture system to comprehensively evaluate their potential improvements on phosphorus recovery from municipal wastewater. Results showed that ferrihydrite would outcompete magnetite on phosphorus capture, by increasing TP removal efficiency from 17.5% to 91.2% while maintaining a high organic carbon capture efficiency of about 50%. Although both iron minerals were favored for improving sludge settling performance, the potential toxicity of magnetite was higher than that of ferrihydrite. Chemical precipitation and adsorption are the main pathways for phosphorus removal by iron minerals. Subsequent anaerobic fermentation showed that ferrihydrite bounded phosphorus was mainly transformed to vivianite while magnetite captured phosphorus was released into the liquid. Surprisingly, ferrihydrite was favored for the volatile fatty acids rather than biogas production, with an average yield of 523.2 mg/g volatile suspended solids. This work might be valuable for exploring a more sustainable value-added resource recovery paradigm.
研究领域:
环境工程
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污水处理
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资源回收
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Quan Liu,Yong Kong,Ziqian Sun,Zhiyuan Liu,Xiaodong Shen
Amine hybrid silica aerogel globule (AHSAG) for CO 2 capture including direct air capture (DAC) was firstly synthesized via wet casting assisted self-catalyzed sol-gel process. AHSAG has abundant interpenetrating macropores , which favors diffusion of CO 2 into internal amine sites and can enhance CO 2 adsorption kinetics and capacity. The optimal CO 2 adsorption capacity of AHSAG with dry 100% and 400 ppm CO 2 are 3.82 (30 °C) and 1.86 mmol/g (55 °C), respectively. Corresponding amine efficiencies are 0.478 and 0.233. The effect of temperature on CO 2 adsorption capacity is attributed to simultaneous enhancement of mass transfer kinetics and adsorption thermodynamics. The highest CO 2 adsorption rate of AHSAG is achieved at 70 and 55 °C with 100% and 400 ppm CO 2 , respectively. The trend of CO 2 adsorption rate with temperature is attributed to the synergistic effect of diffusion kinetics and desorption. Based on experimental CO 2 adsorption kinetics, adsorption mechanism in 400 ppm CO 2 was estimated with different diffusion models . Both film diffusion resistance and intraparticle diffusion resistance are involved in CO 2 capture of AHSAG from air under given condition to control the overall adsorption process . Three kinetics models were used to fit the experimental data of AHSAG for DAC, and the Avrami model showed the best fitting within the whole adsorption period. Comparing with its state-of-the-art counterparts, AHSAG offers significant advantages for practical DAC, such as high adsorption capacity and amine efficiency, fast adsorption kinetics, and excellent cyclic stability.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Rongrong Zheng,Mengyao Jiang,Yanfang Fan
Traditional solid amine adsorbents in powdery morphology are not suitable for direct air capture (DAC) adsorption processes requiring high air flow rates, as the adsorber applicable for adsorbent particles unavoidably results in high pressure drop. Herein, we demonstrate a flexible membrane solid amine adsorbent based on cellulose acetate/silica composite supports that is fabricated into a spiral wound module functioning as a gas–solid contactor, presenting reduced pressure drop and comparable adsorption capacities with powdery solid amine materials. First, the phase inversion method is utilized to prepare cellulose acetate/silica membrane support, where the doping amount of silic varies from 60 wt% to 80 wt%. After assembling the support into a spiral module, poly (ethyleneimine) (PEI) is loaded in the module via an in-situ amine impregnation method, that the amine solution flows into the module which could reduce the support mass loss encountered in the conventional static impregnation method. The CO 2 adsorption capacity of the representative flexible membrane solid amine adsorbents reaches 1.6 mmol/g in 400 ppm CO 2 at 35 °C and increases to 2.37 mmol/g under humid conditions. Surprisingly, the adsorbent at a low PEI loading of 6 wt% has an adsorption capacity of 0.83 mmol/g at −10 °C, offering a high amine efficiency of 0.58 mmol CO 2 /mmol N. This is attributed to dominant CO 2 physisorption at sub-ambient temperatures, signifying its unique advantages in reduced energy penalty and adsorbent costs related to high amine efficiency. Upon exposure to the actual atmosphere (27 °C ± 2 °C, 50 %RH), the spiral module displays an impressive adsorption capacity of 1.9 mmol/g, highlighting its great potential for practical application in a DAC process.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Xupeng Zhang,Kaiqian Li,Longxin Guo,Zhiping Xu,Shuduan Deng,Ying Liu,Gang Zhu
To effectively mitigate the global warming problem caused by excessive CO2 emissions, the implementation of direct air capture (DAC) technology has emerged as one of the most promising strategies for capturing CO2 from the atmosphere. The key to DAC technology hinges on the development of high-performance solid sorbent materials that demonstrate high CO2 adsorption capacity and gas separation selectivity, particularly under low CO2 partial pressure conditions. Herein, we have successfully developed a class of MOF@carboxylated wood sponge (MOF@CWS) hybrid sorbents, capable of efficient CO2 capture from low-concentration (less than 10,000 ppm) CO2 sources, achieved by embedding the porous MOF into carboxylated wood sponges (CWS) substrate via an in situ growth route. Within the MOF@CWS series, the CO2 uptake capacity of Mg-MOF-74@CWS is 3.61 and 2.65 mmol/g at 1 bar, 273 and 298 K, respectively, significantly higher than those of CWS and HKUST-1@CWS. Moreover, this material exhibited outstanding DAC performance, with the CO2 sorption capacity at 273 K up to 0.56 mmol/g from ambient air (ca. 400 ppm of CO2), surpassing most other solid sorbents. The obtained Mg-MOF-74@CWS also demonstrated exceptional CO2/CH4 separation performance, primarily due to the unique pore structure and augmented interaction between the CO2 molecules and the hybrid sorbents. The results of this study indicate that Mg-MOF-74@CWS has potential as an efficient solid sorbent for the DAC of CO2.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
研究领域:
材料科学
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核能工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）