SENSORS AND ACTUATORS B-CHEMICAL
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2015
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IF 4.097
Cheng-Hui Zeng,Xiao-Ting Meng,Song-Song Xu,Li-Jun Han,Shengliang Zhong,Mei-Ye Jia
A rarely reported polymorphic lanthanide complex is prepared by acetylacetone (acac) tuning method. Luminescence properties of 1 are studied. Interestingly, 1 is proved to be a multifunctional material. It is a highly selective and sensitive Co 2+ sensor, among 24 species, only Co 2+ quenching the Tb 3+ centered luminescence. The possible sensing mechanism is the decomposition of 1 which induced by Co 2+ . The limit of detection (LOD) for sensing Co 2+ is as low as 330 nM, which is lower than the standard of Chinese environmental protection department. Mechanism study confirmed the luminescence quenching can be ascribed to the decomposition of 1 which induced by Co 2+ . Further investigations find 1 -Co 2+ can be applied as tunable luminescent timer, by tuning the ratio of 1 /Co 2+ . CIE coordinates of 1 -Co 2+ change regularly (has excellent linearity) from green to violet with the time increasing.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2016
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IF 2.567
Tao Wang,Wei Yu,Fei Liu,Mengxiang Fang,Muhammad Farooq,Zhongyang Luo
In this study, three different nanoparticles—SiO2, TiO2, and Al2O3—were employed to enhance the CO2 gas absorption by monoethanolamine (MEA) solvent. It is observed that, with increased solids loading, the total mass-transfer enhancement has a tendency to be dominated by the bubble breaking effect. It is concluded that nanoparticles result in an increased CO2 absorption rate of >10%. On the other hand, nanoparticles exhibit much more attractive impact on CO2 desorption. Under the same desorption extent, solvent with 0.1 wt % TiO2 nanoparticles saved 42% desorption time, compared to that without nanoparticles. Under higher heat flux density, more input heat would be supplied to the heat of desorption, rather than the heat of water evaporation, which is due to the enhancement of desorption rate by nanoparticles. The issue of particle aggregation was also investigated by analyzing the size distribution of nanoparticle clusters and zeta potential of MEA solvents.
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Journal of Coatings Technology and Research
·
2026
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IF 3.4
Huang Caitong,Xian Wenqi,Cao Hao,Zheng Rui,Zhou Xinyi,Liu Zhu,Lu Ming,Chu Yuehuan,Liu Guocong
Carbon dioxide (CO 2 ), a renewable C1 feedstock, provides a sustainable alternative to fossil-based polymers. While conventional waterborne polyurethanes are well studied, systematic comparisons of cationic, anionic, and nonionic CO 2 -based WPUs with identical soft segments remain underexplored. Here, CO 2 -based polycarbonate diol (PPCD) was used as the soft segment, and three hydrophilic monomers were introduced to synthesize cationic (C-WPU), anionic (A-WPU), and nonionic (NI-WPU) WPUs. Characterizations revealed distinct performance differences: C-WPU showed a mixing region T g of 6.1°C; A-WPU exhibited a T 5 % of 269°C; NI-WPU achieved superior emulsion uniformity, the highest T 5 % (325°C), and crystallinity (48.2%). This work clarifies the hydrophilic monomer–structure–property relationship and offers a systematic benchmark for low-carbon coating design.
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Small
·
2019
·Vol. 15
·期 49
·1904145
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IF 10.856
Hanqing Lin,Ke Gong,Wen Ying,Danke Chen,Jun Zhang,Youguo Yan,Xinsheng Peng
CO 2 capture and sequestration is an energy-intensive industry to deal with the global greenhouse effect. Membrane separation is considered a cost-effective method to mitigate the emission of CO 2 . Though good separation performance and stability have been reported, supported ionic liquid membranes are still not widely applied for CO 2 separation due to the high cost. As a novel analogous solvent to ionic liquid, deep eutectic solvent retains the excellent merits of ionic liquid and is cheap with facile preparation. Herein, a highly CO 2 -philic separation membrane is constructed by nanoconfining choline chloride/ethylene glycol (ChCl/EG) deep eutectic solvent into graphene oxide nanoslits. Molecular dynamic simulation results indicate that the confinement makes a difference to the structure of the nanoconfined ChCl/EG liquid from their bulk, which remarkably facilitates CO 2 transport. By tuning the molar ratio of ChCl/EG and thickness of the membrane, the resultant membrane exhibits outstanding separation performance for CO 2 with excellent selectivity over other light gases, good long-term durability, and thermal stability. This makes it a promising membrane for selective CO 2 separation.
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CHEMICAL ENGINEERING JOURNAL
·
2023
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IF 15.1
Jinhang Yang,Yanping Hou,Jiangli Sun,Jingwen Wei,Shiming Zhang,Jiaxiang Liang,Zebin Yu,Hongxiang Zhu,Shuangfei Wang
In this study, biomass-derived carbon quantum dots (CQDs) doped with different nitrogen sources were loaded on Cu 0.05 Zn 2.95 In 2 S 6 (CZIS) to achieve efficient and highly selective CO 2 photocatalytic reduction. Results of various characterizations demonstrated that CZIS@CQDs-T with the highest pyridine nitrogen content (30.4%) exhibited the best light utilization, the most efficient carriers’ separation. In-situ XPS demonstrated that NCQDs were conducive to promoting electron transferred directly from the Zn 3 In 2 S 6 to NCQDs under light illumination. The CZIS@CQDs-T achieved a CO yield of 70.691 μmol·g −1 ·h −1 with selectivity of 100%, and the yield was 4.77 times higher than that of the CZIS. CO 2 -TPD showed that the CZIS@CQDs-T displayed the strongest adsorption capacity for CO 2 , and a weak adsorption capacity for CO. In-situ FTIR analysis showed COOH* was the key intermediates during CO 2 photoreduction process. DFT calculation revealed that the limb-joined pyridine nitrogen of the CZIS had denser charge density when adsorbing CO 2 , and the adsorption energy of CO 2 and desorption energy of CO were significantly enhanced compared with the CZIS. Based on the above analysis, possible pathways and mechanisms of CO 2 reduction were inferred. This study provides inspiration for designing efficient photocatalysts for highly selective reduction of CO 2 .
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ACS Catalysis
·
2025
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IF 13.1
Yufeng Li,Jinbiao Yuan,Yunxuan Ji,Siyang Yan,Jiaxu Liu,Bing Liu,Xiaohao Liu
Developing efficient and stable catalysts to convert CO2 to desirable C1 products is of great importance for carbon resource utilization. Cobalt-based catalysts usually show high activity in methanation but poor selectivity to CO from the reverse water-gas shift (RWGS) reaction. Herein, we synthesized In-doped CeO2-supported cobalt catalysts for RWGS reaction, which achieved almost reverse 100% selectivity toward CO with a near-equilibrium CO2 conversion of about 49% at 500 °C and 1 MPa. Results showed that catalyst reduction could result in In species migration onto Co particles to form an InCo alloy, thereby modulating the cobalt electronic structure. It thus strengthened Co–H* bonding but weakened CO adsorption and activation, in turn inhibiting CH4 formation via HCOO* and CO hydrogenation. Interestingly, the reaction temperature-dependent deactivation was observed over 10Co/CeO2, owing to cobalt oxidation determined by the O atom chemical potential (μO). Theoretical investigations demonstrate that μO is related to the free energy of H2O and H2 (μO = GH2O‐GH2), where the reaction temperature exhibits different degrees of effect on GH2OandGH2. Based on the deactivation behavior study, we successfully developed a simple strategy to suppress oxidation deactivation by mixing with hydrophilic H-ZSM-5 zeolite to drive H2O desorption away from the cobalt surface during the CO2 methanation reaction with much more H2O molecules produced.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Hao Ling,Sen Liu,Hongxia Gao,Haiyan Zhang,Zhiwu Liang
In order to establish an integrative mass transfer coefficient (K G a V ) model for CO 2 absorption into blended monoethanolamine (MEA)/1-dimethylamino-2-propanol (1DMA2P) solution in packed column, the models of CO 2 Henry’s law constants (He CO₂-MEA/1DMA2P ) and the equilibrium CO 2 solubility (α eq ) were constructed. The experimental produced data can be reasonably analyzed. In this work, the Arrhenius equation was employed to fit the values of He CO₂-MEA/1DMA2P at different temperature with AARD of 4.06%; the Kent-Eisenberg prediction model and empirical polynomial prediction model were used to predict the data of α eq under different CO 2 partial pressures and temperatures with AARDs of 2.64% and 0.83%, respectively; the empirical K G a V model proposed by Li, the empirical K G a V model proposed by Aroonwilas and new K G a V model were used to correlate the average values of K G a V with AARDs of 14.36%, 12.44% and 9.03%, respectively; the model for outlet CO 2 concentration (y CO₂,out ) in packed column was developed with AARD of 15.97%. Moreover, the heat of CO 2 absorption in 6 kmol/m 3 MEA/1DMA2P solution was estimated by Gibbs-Helmholtz equation which gave a value of −39.8 kJ/mol. The results show that the blended MEA/1DMA2P solution has advantages that make it a potential absorbent for CO 2 capture.
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ENERGY CONVERSION AND MANAGEMENT
·
2024
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IF 9.9
Si Li,Zhenchong Xiao,Yu Shi,Liang Zhang,Jun Li,Qian Fu,Xun Zhu,Qiang Liao
To realize the utilization of power energy from thermally regenerative batteries and treat flue gas, an eco-friendly coupled system of thermally regenerative battery-driven electrochemical reduction of carbon dioxide is proposed. This system recovers low-grade waste heat for electrical power while in-situ utilization for carbon dioxide reduction. The results show that carbon nanotubes-loaded silver catalyst enhances electrochemical carbon dioxide reduction performance due to increased active sites exposure. Output voltage and maximum power correlate linearly with the number of cell pairs in the thermally regenerative battery stack. Operating with 4 cell pairs, the eco-friendly coupled system achieves an average carbon monoxide Faradaic efficiency of 76.6 % and an average carbon monoxide Faradaic current density of 5.4 mA cm −2 . A minimum of 3 cell pairs is necessary for system operation. The increase of cell pairs in a certain range is beneficial for the performance improvement of electrochemical reduction of carbon dioxide. The eco-friendly coupled system attains an average Faradaic efficiency of 89.4 % and an average carbon monoxide Faradaic current density of 17.8 mA cm −2 with 8 cell pairs. This coupled system indicates a feasible and promising way to simultaneously reduce the emission of low-grade waste heat and carbon dioxide in flue gas without additional inputs.
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Advanced Science
·
2026
·
IF 14.1
Dingran Wang,Bingyan Sun,Keran Wang,Di Fu,Ting Fan,Yanghui Lu,Tianfu Zhang,Kaige Wang
CO 2 hydrogenation to green methanol using renewable hydrogen offers a promising approach for achieving a sustainable carbon cycle. Among various catalyst designs, inverse catalysts have attracted growing interest due to their unique structural advantages. However, the performance of inverse catalysts, such as ZrO 2 /Cu, is hindered by their hydrophilic nature, while the systematic investigations into their surface wettability remain rare. In this study, we report a non-destructive hydrophobic modification strategy for ZrO 2 /Cu catalyst through physical mixing with polydivinylbenzene (PDVB). The optimized ZrO 2 /Cu-PDVB (1:1 mass ratio) catalyst achieves a methanol space-time yield of 920.10 mg CH3OH g cat − 1 h − 1 under mild conditions, outperforming the unmodified catalyst by 30%. Additionally, the optimized catalyst also demonstrates outstanding 200 h thermal stability. In situ DRIFTS and related analyses reveal that the PDVB effectively promotes water desorption and diffusion, alleviating its negative impact on the rate-determining step of formate hydrogenation. This also preserves the size, metallic state of Cu particles, and the abundance of oxygen vacancies, crucial for maintaining the active ZrO x -Cu interface. This work presents a simple, scalable method for adjusting the local microenvironment of inverse catalysts, highlighting the critical yet underexplored role of hydrophobic surface engineering in optimizing water-sensitive catalytic systems.
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PubMed
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AICHE JOURNAL
·
2026
·
IF 4.4
Yan Hou,Yue Zhang,Shaohui Tao,Lili Wang,Xiaoyan Sun,Shuguang Xiang,Li Xia,Guoxuan Li
Methyldiethanolamine (MDEA), an efficient and environmentally friendly absorbent, has been widely used in CO 2 capture. This study prepared and evaluated two novel ternary MDEA-based deep eutectic solvents (DES1 and DES2) for CO 2 capture performance. Experimental results show that the maximum CO 2 absorption capacities of DES1 and DES2 were 0.1237 and 0.1016 g CO 2 /g DES, with viscosities of 14 and 9.6 mPa s at 50 wt% water content. After five absorption–desorption cycles, DES1 maintained 82% of its initial absorption efficiency. Nuclear magnetic resonance analysis confirms the successful synthesis of DESs, which effectively absorb CO 2 . After regeneration, the structure remains unchanged despite chemical absorption, indicating the reversibility of MDEA-based DESs. Molecular-level analysis indicates that the DES1 capture CO 2 process involves physical absorption and chemical reactions. Specifically, ethanolamine reacts with CO 2 to form carbamate, and the interaction energy between CO 2 and MDEA is −2699.40 kJ/mol.
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Nature Communications
·
2026
·
IF 15.7
Tang Zhiling,Wang Yingli,Qin Tian,Wei Yuechang,Xiong Jing,Wang Xiong,Li Xuanzhen,Liu Min,Liu Yunpeng,Liu Xi,Zhao Zhen
Photocatalytic conversion of carbon dioxide to value-added chemicals, particularly multi-carbon products, offers a promising route toward carbon-neutral cycles. However, achieving high activity and selectivity remains extremely challenging due to the instability of key reaction intermediates and limited C–C coupling efficiency. Herein, we report a low-coordination manganese single-atom catalyst embedded in zinc sulfide (Mn 1 –ZnS v ) that enables efficient and selective CO 2 -to-C 2+ conversion. In-situ spectroscopic analyses and density functional theory calculations reveal that sulfur vacancies are created at the Mn single-atom coordination sites and induce the formation of coordination-unsaturated Mn-S 2 configuration. The asymmetric coordination environment of Mn modulates local charge distribution, strengthens *CO adsorption, and promotes *CO and *CHO coupling to form the *COCHO intermediate for efficient C–C coupling. As a result, the Mn 1 –ZnS v catalyst achieved 99.1% selectivity for ethylene with a formation rate of 76.6 μmol g -1 h -1 . This study highlights the critical role of atomic-level coordination engineering in advancing photocatalytic CO 2 -to-C 2+ conversion.
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PubMed
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POWDER TECHNOLOGY
·
2026
·
IF 4.6
Zheng-Hao Li,Li Zhang,Yu-Cui Yang,Xue-Yuan Guo,Ye Sheng,Bing Zhou
In this study, carbon dioxide (CO 2 ) and magnesium oxide (MgO) were employed as raw materials to develop a method for preparing multilayer plate-like magnesium hydroxide (MH) via CO 2 utilization, followed by surface modification with stearic acid (SA). The products were characterized by using Powder X-ray diffraction (PXRD), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR) to analyze their crystal plane distribution, morphology, and functional groups. In addition, thermogravimetric analysis (TGA) was conducted to investigate the decomposition temperatures. Furthermore, molecular dynamics simulations were performed to elucidate the structural arrangement of SA on the MH surface. This work proposes a novel strategy for synthesizing active MH by employing gaseous CO 2 instead of conventional industrial precursors, thereby reducing environmental pollution, lowering production costs, and enabling a milder reaction process. The findings provide theoretical guidance for the subsequent development of cost-effective and environmentally friendly industrial-scale production.
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