JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Shuangqi Song,Hong Li,Jingde Li,Yanqin Yang
Mixed-matrix membranes (MMMs), developed through the combination of solid fillers with polymer matrices, represent an effective approach addressing the persistent challenge of balancing permeability and selectivity in polymer membrane. Diethylenetriamine-functionalized porous material of PP-DETA, which is synthesized from porous organic polymer of PP via one-step diethylenetriamine grafting, is an ideal material for MMMs production. However, designing and optimizing PP-DETA for high-performance CO 2 separation membranes remains a challenge. Herein, we develop an improved PP-DETA material, designated as PP-DETA-cPIM-1, by covalently attaching a carboxylated polymer of intrinsic microporosity (cPIM-1) network layer onto the PP-DETA surface. Membranes prepared from this PP-DETA-cPIM-1 filler and PIM-1 matrix demonstrate enhanced interfacial adhesion and stronger mechanical properties in comparison to the counterparts with the same loading of PP-DETA. The incorporation of PP-DETA-cPIM-1 into MMMs establishes an enhanced filler/polymer interface that facilitates the selective transport of CO 2 through the filler, while simultaneously improving membrane stability and suppressing physical aging. Specifically, with 5 wt% loading of PP-DETA-cPIM-1 filler, the MMM is able to enhance the CO 2 /N 2 selectivity and CO 2 permeability by 52.3 % and 25.3 %, respectively, exceeding the upper bound established in 2008. Furthermore, PP-DETA-cPIM-1/PIM-1 MMMs display superior anti-aging ability for 180 days of aging.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Carbon Capture Science & Technology
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2024
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IF 10.4
Wei Wei,Donghui Li,Xiaoxuan Yan,Xujia Mu,Zhiyi Li,Zhijun Liu
In recent years, research into biphasic solvents has become an important direction more efficient control of CO 2 emissions. However, most biphasic absorbents still face challenges such as low cyclic capacity and high viscosity of the rich phase. To develop a novel solvent with enhanced cyclic capacity and reduced regeneration energy consumption, a biphasic solvent consisting of DETA/Isobutanol/H 2 O was proposed. The results demonstrate excellent absorption and desorption performance of the DETA/Isobutanol/H 2 O biphasic solvent, with an absorption capacity ranging from 1.13 to 1.35 mol/mol and a cyclic capacity ranging from 0.61 to 0.84 mol/mol. After conducting 5 times absorption-desorption experiments, the cyclic capacity of DETA/Isobutanol/H 2 O biphasic solvent remained at 0.8 mol/mol. The estimated energy consumption for regeneration, under lean phase load, was calculated to be 2.42 GJ/t CO 2 , which was 42.24 % lower than that of 30wt% MEA aqueous solution (4.19 GJ/t CO 2 ). The DETA/Isobutanol/H 2 O solution exhibits promising potential in terms of absorption-desorption performance and regenerative energy consumption, making it an exceptional CO 2 absorbent.
研究领域:
环境科学
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化学工程
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碳捕集与封存
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DOI
高影响因子
Coatings
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2023
·Vol. 13
·期 7
·1145
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IF 3.4
Shuanqiang Yang,Zhenzhen Jia,Jinjia Xu,Ruoyu Hong
High-performance coating could be used to protect steels in engineering. The GPTMS-TEOS hybrid coatings were successfully prepared using (3-glycidoxypropyl) trimethoxysilane (GPTMS) and tetraethylorthosilicate (TEOS) as reaction raw materials and diethylenetriamine (DETA) as both a curing agent and catalyst at room temperature. The hybrid coating contained amorphous SiO2and was characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The DETA content of the hybrid coating has a significant impact on the performance of the coating. As the DETA content increases, the thermal stability of the hybrid coating increases at 400–600 °C due to the production of more SiO2in the amine-rich state. However, the gelation time decreases dramatically, preventing the hybrid coating from better infiltrating the surface of the steel substrate. In addition, there are not enough silicon hydroxyl groups to bond with the hydroxyl groups on the surface of carbon steel and adhesion is significantly reduced. Therefore, hybrid coatings with a moderate DETA content (NH:epoxy ratio equivalent to 1:1) show the best corrosion resistance, with a third-order magnitude increase in corrosion resistance compared to that of carbon steel.Keywords:GPTMS-TEOS;hybrid coatings;amorphous SiO2;anti-corrosion coatings
研究领域:
材料科学
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腐蚀与防护
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高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2020
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IF 4.872
Jiahong Wang,Yao Chen,Tongtong Sun,Atif Saleem,Chuanyi Wang
A novel amino-functionalized magnetic adsorbent (Fe 3 O 4 @C@DETA) was developed for adsorption of Cr(III) and Cr(III)-EDTA from wastewater. Fe 3 O 4 @C@DETA were successfully prepared by modification of Fe 3 O 4 @C with diethylenediamine (DETA), which exhibits a core-shell structure and sufficient saturation magnetization. Fe 3 O 4 @C@DETA exhibits much better adsorption performance for Cr(III) and its chelates than the Fe 3 O 4 @C because of newly introduced amino active sites. The enhanced adsorption capacity of Fe 3 O 4 @C@DETA for Cr(III) is 44.74 mg g −1 (at 25 °C and pH 3.0), which is due to the surface coordination with the newly introduced amino functional sites. The Cr(III)-EDTA anions as a whole was adsorbed through the electrostatic interaction with protonated amino species of the Fe 3 O 4 @C@DETA and have maximum adsorption capacity of 47.27 mg g −1 (at 25 °C and pH 3.0). The adsorption data of free and EDTA coordinated Cr(III) were followed the Langmuir equation, while the adsorption dynamics was well explained by pseudo second order model indicating the chemical nature of adsorption process. The higher concentration of Ca 2+ ions in the wastewater compete for adsorption sites and inhibit the Cr(III) removal, while on other hand Ca 2+ ions promotes the adsorption of Cr(III)-EDTA, because of electrostatic interaction with adsorbent active sits. Furthermore, the adsorbent can be easily separated by external magnetic field and regenerated in acidic solution. The adsorbent is stable, recyclable and have more than 75% regeneration efficiency and can be repeatedly used in the adsorption process.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Taiping Hu,Kai Dai,Jinfeng Zhang,Guangping Zhu,Changhao Liang
Inorganic-organic hybrid materials, a class of probable candidates for combining two counterparts into one structure could be beneficial for improving or combing the excellent electronic, magnetic, rigidity and thermal stability, and optical feathers of inorganic frameworks with diverse structure, processability, flexibility and good geometric controllability of organic molecules. Anchoring inorganic-organic hybrid materials with cocatalysts is a usually used strategy for enhancing their catalytic performance. However, noble metal cocatalysts always limit their practical application. Herein, we report that noble metal free cocatalyst of Ni 2 P decorated CdS-diethylenetriamine (CdS-DETA) can effectively overcome this limitation to achieve highly photocatalytic hydrogen production . The rapid microwave solvothermal synthesis of CdS-DETA (MCdS-DETA) process shortens reaction time, saves energy and lead to achieve highly photocatalytic activity due to its low crystallinity . When Ni 2 P decorated MCdS-DETA, The 0.4%Ni 2 P/MCdS-DETA exhibited the highest photocatalytic hydrogen evolution activity (6836 μmmol h −1 g −1 ), which is 4.14 times, 2.06 times and 1.34 times higher than traditional solvothermal CdS-DETA(TCdS-DETA), MCdS-DETA and Pt cocatalysted MCdS-DETA, respectively. The method reported here can be extended to other inorganic-organic hybrid materials, and develops new strategies for exploring inorganic-organic hybrid-based photocatalysts .
研究领域:
材料科学
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能源化学
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DOI
高影响因子
Small
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2024
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IF 13
Yongzhuo Yu,Wei Li,Yuxin Huang,Huixing Yang,Chaoyu Lv,Hui xiang Yan,Di Lin,Shichao Jiao,Linlin Hou,Zhiliang Wu
Inspired by energy conversion and waste reuse, hybridized Ni-MOF derivative-CdS-DETA/g-C 3 N 5 , a type-II heterojunction photocatalyst, is synthesized by a hydrothermal method for simultaneous and highly efficient photocatalytic degradation and hydrogen evolution in dye wastewater. Without the addition of cocatalysts and sacrificial agents, the optimal MOF-CD(2)/CN5 (i.e. Ni-MOF derivative-CdS-DETA (20 wt.%)/g-C 3 N 5 ) exhibit good bifunctional catalytic activity, with a H 2 evolution rate of 2974.4 µmol g −1 h −1 during the degradation of rhodamine B (RhB), and a removal rate of 99.97% for RhB. In the process of H 2 -evolution-only, triethanolamine is used as a sacrificial agent, exhibiting a high H 2 evolution rate (19663.1 µmol g −1 h −1 ) in the absence of a cocatalyst, and outperforming most similar related materials (such as MOF/g-C 3 N 5 , MOF-CdS, CdS/g-C 3 N 5 ). With the help of type-II heterojunction, holes are scavenged for the oxidative degradation of RhB, and electrons are used in the decomposition of water for H 2 evolution during illumination. This work opens a new path for photocatalysts with dual functions of simultaneous efficient degradation and hydrogen evolution.
研究领域:
材料科学
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环境科学
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化学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Taiping Hu,Pengfei Li,Jinfeng Zhang,Changhao Liang,Kai Dai
Cadmium sulfide (CdS) has demonstrated great promise in artificial photocataytic hydrogen (H 2 ) production. However, the serious photocorrosion hinders its effective interaction and real-life application. In this work, a typical direct Z-scheme WO 3 /CdS-diethylenetriamine (CdS-DETA) composite has been designed via facile in-situ solvothermal method, which exhibits excellent H 2 production properties in visible light region. In this system, the inorganic–organic CdS-DETA nanobelts (NBs) possess enough active sites and large surface area for the encouraging nanojunction structure information. Furthermore, we also systematically calculated energy band structure and investigated charge transfer of the WO 3 /CdS-DETA by PL and photocurrent test, the results demonstrated that the suitable band gap matching between CdS-DETA and WO 3 and high redox potential improve the separation of photogenerated holes and electrons, restraining intrinsic photocorrosion of CdS as well as improving the photocatalytic activity. 5%WO 3 /CdS-DETA presented the most outstanding H 2 evolution rate (15522 μmol g −1 h −1 ), which is twice higher than that of pure CdS-DETA. WO 3 /CdS-DETA composites also presented high stability after three recycle H 2 production experiment. Finally, direct Z-scheme photocatalytic mechanism is calculated.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
International Journal of Greenhouse Gas Control
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2019
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IF 3.231
Mimi Xu,Shujuan Wang,Lizhen Xu
21 pairs of physical-chemical biphasic solvents were screened out using a fast screening facility and the distribution of components was detected both in upper and lower phases after absorption. The physical solvents and amines were enriched in opposite phases due to the limited solubility of absorption products in the physical solvents, and the enrichment of components gets higher as the loading time goes by. Comparisons of the cyclic capacity showed that MEA and DETA were much better main solvents than BDA in biphasic solvents, and 2.5 DETA-4 sulfolane has the highest CO 2 cyclic capacity of 4.486 mol L −1 , which was much higher than that of 30 wt% MEA. The concentrations of physical solvents influence the cyclic capacity a lot rather than the types of physical solvents. Then the phase separation character and absorption performance were analyzed for solutions in different amine to physical solvent concentration ratios, and the results showed that increasing the concentration of the physical solvent within certain range benefits to raising cyclic absorption capacity and reducing the energy penalty. At last, the sensible heat and vaporization heat of two biphasic solvents were estimated with a flash module of Aspen Plus, which showed less energy penalty than that of 30 wt% MEA.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 4.3
Wenwei Wu,Shuai Wang,Can Lv,Tejraj Aminabhavi,Ozge Yuksel Orhan,Helei Liu
In this study, a novel mixed amine biphasic absorbent composed of DETA, 1DMA2P, and H 2 O was constructed for CO 2 capture. Physical properties of the biphasic absorbent were calculated over the temperature range of 298.15 K to 313.15 K, while its CO 2 absorption kinetics were investigated in a stirred tank reactor. Based on different reaction mechanisms of the primary amine DETA and the tertiary amine 1DMA2P with CO 2 , the overall reaction rate constant (k ov ) and the second-order reaction rate constant (k 2 ) of the biphasic solvent were calculated. Using Arrhenius equation, the activation energies of DETA and 1DMA2P solutions in the biphasic absorbent were calculated to be 19.37 kJ/mol and 51.45 kJ/mol, respectively, both lower than those of pure solutions. 13 C NMR data and quantum chemical calculations indicate the generation of highly polar products with increasing CO 2 flow rate, prompting the phase transition in homogeneous solution. DETA and its products dissolved in aqueous phase form the CO 2 -rich phase. The less polar 1DMA2P interacted less strongly with DETA products and separated into upper layer of the solution due to its lower density than the DETA-related products.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhipeng Chen,Tao Wang,Chao Li,Mengxiang Fang,Wei Chen,Ximing Hu,Yan Shao,Zhihao Liu,Wei Zhang,Li Zhang,Wenyang Fan,Shaojuan Zeng
Lower regeneration energy and superior cyclic capacity have enabled biphasic absorbents great potential in the area of flue gas CO 2 capture. The liquid film mass transfer coefficient(k L ) is a vital parameter in the development of absorbents with efficient CO 2 absorption mass transfer performance, while the phase separation behavior of biphasic solutions could be an essential factor for the absorption mass transfer and the stability of absorber. However, systemic kinetic research towards biphasic absorbents, especially the impact of phase separation behavior, is limited. In this study, a typical amide-based biphasic absorbent diethylenetriamine(DETA)/diethanolamine(DEA)/N, N-dimethylacetamide(DMAC) which has achieved great reduction in regeneration energy, was selected as the subject of kinetic investigation in a wetted wall column. The CO 2 overall mass transfer coefficient(K G ) of DETA/DEA/DMAC exceeded other biphasic solvents, blended amine solution, and 40% K 2 CO 3 solution, with 3 times that of 40% K 2 CO 3 solution. Moreover, various operational conditions including absorption temperature, gas flow rate, and water content of solution were taken into account to build a multiple-condition kinetic mechanism to offer guidance for biphasic absorbents. Furthermore, phase separation behavior was revealed as the main blame for the deterioration in the liquid film chemical mass transfer process of biphasic solvents in the CO 2 absorption process, resulting in the k L of DETA/DEA/DMAC before phase separation decreased by 75.3% at the phase separation stage. Therefore, it is crucial to ensure that the CO 2 loading of the solution entering absorber is lower than the phase separation point in applications. After phase separation, DETA/DEA/DMAC split into the organic and aqueous phases, the k L of the aqueous phase gradually exceeded that of the organic phase as CO 2 loading increased for its higher chemical enhancement factor(E).
研究领域:
化学工程
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环境科学
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DOI
高影响因子
Greenhouse Gases-Science and Technology
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2019
·Vol. 9
·期 2
·349-359
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IF 1.693
Ji Liu,Xiaoshan Li,Zewu Zhang,Liwei Li,Yajun Bi,Liqi Zhang
The carbon dioxide post-combustion capture process using amine solutions is considered the most appropriate method for CO 2 capture from flue gas in power plants. This paper focuses on the CO 2 capture performance of six common organic amines. Two amines, piperazine (PZ) and diethylenetriamine (DETA), which showed better performance, were then filtered out to form amine blends to improve performance further. The absorption heat from the CO 2 absorbing process was measured directly using an advanced C80 micro calorimeter for more accurate calculation of regenerative energy consumption. Experimental results confirmed the optimal amine blend to be 10% PZ plus 20% DETA, with a 42% increase in absorption capacity and a 9% increase in initial absorption rate compared to traditional 30% monoethanolamine (MEA). The regeneration energy consumption of this chosen PZ-DETA blend was calculated to be 3.979 GJ/ton CO 2 , a decrease of 9% compared with MEA. Moreover, it led to an improvement of about 55% in stable cyclic absorption capacity in comparison with 30% MEA. It was confirmed that this PZ-DETA blend can bring practical economic benefits to industrial applications when replacing the current 30% MEA solution. © 2019 Society of Chemical Industry and John Wiley & Sons, Ltd.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
APPLIED ENERGY
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2018
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IF 7.9
Lidong Wang,Songhua Yu,Qiangwei Li,Yifeng Zhang,Shanlong An,Shihan Zhang
The phase splitting solvent as a promising alternative to MEA for CO 2 capture has received an increasing attention due to its low energy consumption. In this paper, the mixture of diethylenetriamine (DETA) and sulfolane was employed to absorb CO 2 from the simulated flue gas . Its phase splitting behavior was investigated. The species in each separated phase were identified using nuclear magnetic resonance (NMR), revealing that the upper layer was a CO 2 -rich phase and mainly consisted of DETA and DETA-carbamate. Whereas, the lower layer was CO 2 -lean phase with the sulfolane presented individually. The CO 2 absorption kinetics was also measured in a wetted-wall column as a function of temperatures, CO 2 loadings, and gas flow rate . Their impacts on the enhancement factor and mass transfer resistance were calculated by the Vapor-Liquid Equilibria (VLE) model, implying that the main CO 2 mass transfer resistance gradually transferred from the gas side to the liquid side with the CO 2 loading increasing from 0 to 2.21 mol L −1 . During the CO 2 absorption process, sulfolane acted as an inert solvent for substituting the role of water and separated from the absorption product. Consequently, the sensible heat and vaporization heat were substantially decreased by 59% and 12%, respectively. Hence the total heat duty was lowered by 19% which might noticeably advance the CO 2 capture technology.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）