APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Minzhang Li,Man Liang,Wei Wang,Beichi Luo,Yanhong Ji,Longzhang Dong,Lu Guo,Danling Tang,Guangguo Ying,Fuming Chen
Electrochemical desalination offers a promising route to address water scarcity, but current methods often face limitations in salt removal rate and capacity. This study introduces an ultrafast electrocatalytic desalination system that leverages the electrochemical reduction of CO 2 to formate (CO 2 RR) to drive efficient salt removal. The optimized bimetallic Sn/Cu-based polyphthalocyanine (Sn 2 Cu 1 PPc) exhibits exceptional CO 2 RR performance, achieving a peak FE formate of 90.3 % at −1.0 V vs. RHE and a j formate of 84.8 mA cm −2 . In-situ spectroscopic analysis and density functional theory (DFT) calculations reveal that the incorporation of Cu-N 4 units into the Sn-based polyphthalocyanine (SnPPc) promotes CO 2 adsorption and facilitates active hydrogen provision, leading to the observed enhancement in CO 2 RR activity. Using the Sn 2 Cu 1 PPc catalyst, our system achieves a salt removal rate of 1701.3 μg cm −2 min −1 and a formate production rate of 0.79 mmol h −1 cm −2 when treating natural seawater, resulting in potable water with 99.06 % salt removal efficiency. This performance is enabled by a high current density (∼70 mA cm −2 ) during CO 2 RR, which significantly enhances ion transport across the membranes, making this one of the most effective desalination approaches reported. This work demonstrates the potential of coupling CO 2 RR with desalination for sustainable water production and CO 2 mitigation, while also advancing the design of efficient Sn-based electrocatalysts for formate production.
研究领域:
电化学
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环境科学
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材料科学
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能量转换
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水处理
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产品关联
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Jingyu Lv,Kang Tan,Fei Wang,Chuanyu Dang,Mengting Sun
Slow CO2 hydrate formation kinetics restricts the development and industrial application of hydrate-based carbon capture and sequestration (CCS) technology. Here, sodium p-styrenesulfonate (SSS) was employed as a novel promoter for CO2 hydrate formation, and its efficiency, promotion mechanism, and recyclability were systematically studied. Results indicated that SSS improved the hydrate formation kinetics remarkably and yielded the highest CO2 uptake of 8.033 ± 0.348 mmol mL–1 as well as the rapidest hydrate growth rate (HGR) of 0.437 ± 0.075 mmol mL–1 min–1 at concentrations of 50 and 100 mmol L–1. SSS under a moderate concentration also presented high efficacy; 6 mmol L–1 SSS led to a short induction time of 36.37 ± 32.14 min, a rapid HGR of 0.307 ± 0.029 mmol mL–1 min–1, and a high CO2 uptake of 7.036 ± 0.472 mmol mL–1. Morphological observation revealed that the promotion effects were mainly attributed to the climbing hydrate growth caused by capillary effect, which was markedly influenced by the sidewall hydrophilicity and the SSS concentration. Stronger hydrophilicity of the sidewall and a higher SSS concentration both favored the liquid movement, boosted the climbing hydrate growth, and improved the formation kinetics. Additionally, SSS did not produce foam when hydrates dissociated and kept admirable promotion performance in at least six repeated cycles, indicating its excellent recyclability.
研究领域:
化学工程
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环境科学
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能源技术
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2024
·Vol. 26
·期 6
·3202-3210
·
IF 9.3
Wanbin Lin,Yihang Li,Manish Singh,Huibin Zhao,Rui Yang,Pei-Chen Su,Liangdong Fan
Reversible solid oxide cells (RSOCs) hold enormous potential for efficient direct CO2 reduction or CO oxidation in terms of exceptional faradic efficiency and high reaction kinetics. The identification of an active fuel electrode is highly desirable for enhancing the performance of RSOCs. This study explores the use of a alkaline metal dopant (Na) to modify the perovskite oxide of Na2x(La0.6−xSr0.4−x)FeO3−δ (2x = 0, 0.10, 0.20) materials with powerful CO2 chemical adsorption capacity, high oxygen ion conductivity, and low average valence of Fe sites for CO2/CO redox reactions. The experimental results indicate that the cells with the NaLSF0.10 fuel electrode achieve a current density of 1.707 A cm−2 at 1.5 V/800 °C and excellent stability over 120 hours at 750 °C for pure CO2 electrolysis, approximately 33.4% improvement over the pristine sample. When operated under a mixed CO–CO2 atmosphere under RSOC mode, the cell outputs the performance of 1.589 A cm−2 at 1.5 V and 329 mW cm−2 at 800 °C, and demonstrates relatively durable operation over 25 cycles. The addition of low valence sodium ions with high basicity and low electronegativity reduces the oxygen vacancy formation energy, increases the concentration of oxygen vacancies and modifies the electronic structure of LSF, thus enhancing CO2 adsorption, dissociation processes and charge transfer steps as corroborated by the detailed experimental analysis. Combined with the acceptable anti-carbon deposition capability, we prove here a feasible strategy and provide new insights into designing novel electrodes for SOEC/RSOCs to effectively convert CO2 with potential for renewable energy storage.
研究领域:
材料科学
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电化学
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能源存储
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固体氧化物燃料电池
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Longkai Pan,Li Yao,Hui Mei,Hongxia Liu,Zhipeng Jin,Shixiang Zhou,Minggang Zhang,Gangqiang Zhu,Laifei Cheng,Litong Zhang
In this study, a novel 3D Bi 2 S 3 /P-ZnO S-scheme gyroid metamaterial was prepared by 3D printing and the hydrothermal method. The unique gyroid macrostructure and nanoarray microstructure offer a large volume of active sites for the photothermal catalytic reaction, thus improving the overall utilization rate of light. ZnO obtained by sintering the precursor produces oxygen vacancies, primarily due to P doping. This enables it to have a photothermal effect. After loading Bi 2 S 3 , the photothermal effect of P-ZnO and Bi 2 S 3 is coupled, further increasing the surface temperature of composite structure and speeding up the reaction rate. P-ZnO and Bi 2 S 3 formed a S-scheme heterojunction, promoting the separation and transfer of photogenerated carriers. Under simulated sunlight, the CO and CH 4 yield of Bi 2 S 3 /P-ZnO S-scheme gyroid metamaterials are 8.87 and 1.49 μmol h −1 . These are 3.45 times and 4.65 times of P-ZnO gyroid structure, respectively. Through SEM, TEM, XPS, ESR and in-situ FTIR characterizations, the transfer paths of photogenerated carriers between heterojunctions were revealed, and the reaction paths of photothermal catalytic CO 2 reduction were explored. The co-design of 3D structure and material allows for a novel concept for further improving photothermal catalytic performance.
研究领域:
材料科学
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化学工程
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环境科学
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纳米技术
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DOI
高影响因子
TETRAHEDRON
·
2019
·
IF 2.379
Jingyuan Li,Qingwen Song,Hengxuan Zhang,Ping Liu,Kan Zhang,Junwen Wang,Dengsong Zhang
Chemical fixation of carbon dioxide under mild reaction conditions e.g. atmospheric pressure and low temperature depends upon the ability of catalyst. Herein, a synergistic catalytic scheme of silver sulfadiazine/ n Bu 4 NBr was described for the three-component reaction of propargylic alcohols, CO 2 , and monohydric alcohols. This catalytic system was demonstrated effectively to provide β-oxopropyl carbonates in excellent yields (up to 99% yield with 5 mol% catalyst). The method tolerated a wide scope of propargylic alcohols and monohydric alcohols under atmospheric CO 2 pressure and solvent-free conditions. The excellent catalytic performance was attributed to the synergistic catalysis confirmed by the careful experiments.
研究领域:
催化
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有机化学
·
绿色化学
✓ 已验证
DOI
高影响因子
Catalysis Science & Technology
·
2021
·Vol. 11
·期 8
·2864-2872
·
IF 6.119
Xiaoli Li,Yuan Tang,Yue Jiang,Manman Mu,Xiaohong Yin
A series of composites composed of Bi4O5Br2 and Fe-MIL were successfully fabricated for mimicking sunlight-driven photocatalytic reduction of CO2. Herein, Bi4O5Br2, as a modulator of solid acids, could turn NH2-MIL-101(Fe) into NH2-MIL-88B(Fe) completely at 0.07 wt% catalytic loading, where further addition could construct the corresponding composites of Bi4O5Br2 and NH2-MIL-88B(Fe). The highest activity in the photocatalytic reduction of CO2 was achieved at 7.96 μmol g−1 h−1 of CH4 at 3.28 wt% of Bi4O5Br2. Besides, this catalyst possessed high photostability during the recycling experiments and the mechanism of this process was thoroughly explored. This study provides a novel strategy employing solid acid modulators for regulating the structure and morphology of MOFs showing high activity and stability in the photocatalytic reduction of CO2 to CH4.
研究领域:
材料科学
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环境科学
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化学
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
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2020
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IF 14.612
Xianhua Zhang,Chunlei Pei,Xin Chang,Sai Chen,Rui Liu,Zhi-Jian Zhao,Rentao Mu,Jinlong Gong
Modulating lattice oxygen in metal oxides that conducts partial oxidation of methane in balancing C–H activation and syngas selectivity remains challenging. This paper describes the discovery of distorting FeO6 octahedra in La1–xCexFeO3 (x = 0, 0.25 0.5, 0.75, 1) orthorhombic perovskites for the promotion of lattice oxygen activation. By combined electrical conductivity relaxation measurements and density functional theory calculations studies, this paper describes the enhancement of FeO6 octahedral distortion in La1–xCexFeO3 promoting their bulk oxygen mobility and surface oxygen exchange capability. Consequently, La0.5Ce0.5FeO3 with the highest FeO6 distortion achieves exceptional syngas productivity of ∼3 and 8 times higher than LaFeO3 and CeFeO3, respectively, in CH4 partial oxidation step with simultaneous high CO2 conversion (92%) in the CO2-splitting step at 850 °C. The results exemplify the feasibility to tailor the active lattice oxygen of perovskite by modulating the distortion of BO6 in ABO3, which ultimately influences their reaction performance in chemical looping processes.
研究领域:
材料化学
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催化化学
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能源化学
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无机固体化学
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化学工程
✓ 已验证
DOI
高影响因子
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
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2023
·Vol. 48
·期 12
·16471-16482
·
IF 2.9
Zainuddin Muhd Izzudin Fikry,Ahmad Abdul Latif,Subramaniam Reasmyraj R.
Carbon dioxide (CO 2 ) separation with membrane technology has become the focus of researchers over the past decades due to its lower energy consumption and cheaper alternative. Mixed matrix membrane (MMM) of poly(4-methyl-1-pentene) (PMP) with nano fumed silica particles was studied to determine the feasibility of using MMM to separate CO 2 from nitrogen (N 2 ) gas. The critical concentration of PMP (7 wt%) was utilized to form the membrane in this study in order to ensure the polymer chain entanglement occurs to form a dense structure. Agglomeration of particle can be observed on the surface with scanning electron microscopy (SEM) imaging with 10 and 15 wt% of nano fumed silica loading in PMP matrix. This observation is further confirmed with energy-dispersive X-ray (EDX) mapping across the cross-sectional area which shows clustered nano fumed silica particle with loading of 10 and 15 wt%. With 7.5 wt% filler loading and at 1 bar, the MMM seems to give the best gas permeance performance with CO 2 permeance of 4.62 GPU (100.54 Barrer) and N 2 permeance of 0.20 GPU (4.31 Barrer) which makes the highest ideal selectivity to be about 23, which was the highest ideal selectivity achieved in this study. Meanwhile, when the pressure was increased from 1 to 7 bar, the CO 2 permeability increased almost linearly followed by a steady decline in CO 2 /N 2 ideal selectivity.
研究领域:
膜技术
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气体分离
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高分子科学
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纳米复合材料
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环境工程
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 2
·473-483
·
IF 6.8
Guan Chen,Liao Yulong,Xiang Quanjun
Simultaneous optimization of surface and interlayer characteristics of graphite-phase carbon nitride (g-C 3 N 4 ) is crucial for enhanced photogenerated-carrier separation efficiency. Integration of distinct strategies with specific merits for constructing efficacious charge carrier transport pathways from bulk to surface faces challenges. Herein, we proposed a novel carboxyl functional group and potassium (K) ions co-modified g-C 3 N 4 for steering dynamic charge transfer processes. Specifically, carboxyl functional groups were grafted to the surface to substantially improve charge carrier dynamics through the driving force induced by its electron-withdrawing effects. Concurrently, K ions were inserted into the interlayers of g-C 3 N 4 to facilitate interlayer carrier transport by bridging adjacent layers. Such a bi-functional photocatalyst achieves 8.68-fold increase in CO yield compared wtih the pristine g-C 3 N 4 without any cocatalyst or sacrificial agent. This work provides a profound discernment into the directional transport of charge carriers within the surface and interlayers, and presents a promising approach for rational design of photocatalysts with remarkably efficient solar energy conversion.
研究领域:
光催化
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材料科学
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环境科学
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纳米技术
·
化学工程
✓ 已验证
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Weiping Liao,Haoyi Lin,Mengdie Yin,Jiaxing Zhang,Zhiguo Zhu,Hongying Lü
The confinement of metal-based matrix such as clusters, particles and even isolated single atoms in zeolite framework was intensively reported, while it was highly untoward to realize this goal for non-metallic ions due to the mutually-exclusive electrostatic interaction between the zeolite framework with negative charges and non-metallic anions. Herein, confinement of iodide ions in Mg-Beta zeolites (I@Mg-Beta) was successfully accomplished via the methodology of structural reconstruction, whose physicochemical property, channel connectivity as well as the location of Mg 2+ and I - ions were investigated systematically. It was found that Mg 2+ ions were located in the zeolitic framework and I - ions were mainly confined in Mg-Beta zeolite via the electrostatic interaction with tetraethylammonium cations. The establishment of structure–function relationship in CO 2 cycloaddition reaction with epoxides indicated the presence of synergistic effect between framework Mg 2+ ions and confined I - ions. The immobilisation of halide ions onto a zeolite support enabled it the recoverable ability from reaction systems, giving rise to relatively stable reusability. The catalytic transformation of CO 2 cycloaddition with epoxides in this work was devoted to ameliorate environmental stress from anthropogenic greenhouse gases of CO 2 by means of elaborately constructing metallosilicate zeolite confined non-metallic catalysts with dual functions.
研究领域:
催化
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环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jing Bai,Chenxu Qiu,Yanhui Wang,Qianqian Zhu,Zheng Yan,Chun Chang,Pan Li,Dongyang Li
Separating CO 2 from flue gas through hydrate method owns many advantages, including easy operation, environmental friendliness, low-energy consumption during the process, and the potential for water recycling in the reaction. This study investigated the effects of cyclopentane (CP, 5.0 vol%), methionine (L-Met, 0.2 wt%), and alkyl polyglucosides (APG) with various carbon chain lengths as additives on the kinetics of flue gas hydrate generation in a simulated power plant environment, with a focus on gas separation efficiency. Key parameters, including impinging strength ( β ), feed pressure, initial temperature, and APG carbon chain length, were systematically investigated to optimize the hydrate formation process. The results reveal that gas consumption ( Δ n H ), average reaction rate ( R H ), and CO 2 capture rate ( S.Fr. (CO 2 )) initially increases with β , reaching a peak before decreasing, while the CO 2 separation factor ( S.F. (CO 2 )) consistently increased. Higher feed pressures and lower initial temperatures enhanced gas consumption, thereby accelerating the hydrate formation and improving separation efficiency. Additionally, the optimal APG carbon chain length significantly enhanced both the kinetics of hydrate formation and gas separation efficiency. Specifically, under conditions of 6 MPa, 275.15 K, and β = 0.13, the CP+L-Met+APG0814 system achieved a maximum Δ n H of 0.509 mol, an R H of 0.102 mol/h, and a S.F. (CO 2 ) of 82.4 %, demonstrating the potential for improved CO 2 capture in hydrate-based separation processes.
研究领域:
化学工程
·
环境工程
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能源技术
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2025
·
IF 3.2
Shen Fumin,Yao Shunyang,Pei Yuanchao,Sun Rubin
The increasing levels of carbon dioxide (CO 2 ) emissions driven by industrial activities highlight the urgent need for the development of efficient and sustainable CO 2 capture technologies. Biomass-derived porous carbons have emerged as promising candidates for CO 2 adsorption due to their low cost, high surface area, and adjustable pore structure. In this study, hierarchically porous carbons (HPCs) were synthesized from waste acer truncatum wood through pre-carbonization and subsequent KOH activation. The synthesis conditions, including activation temperature and activating agent concentration, were optimized to precisely tailor the pore architecture. The resulting HPC exhibited excellent CO 2 adsorption capacities of 7.56 mmol·g⁻ 1 at 0 °C and 4.29 mmol·g⁻ 1 at 25 °C under ambient pressure. Notably, ultramicropores (< 0.7 nm) exhibited a dominant role in CO 2 capture at low pressures, while narrow micropores (< 1.0 nm) contributed significantly across a range of low-pressure conditions. The hierarchical pore structure enhanced CO 2 uptake at higher pressures. Furthermore, the material demonstrated exceptional CO 2 /N 2 selectivity, reaching up to 112 at 0.15 bar and 0 °C, along with good cyclic stability, highlighting its potential in post-combustion CO 2 capture. This work provides a sustainable strategy for converting waste biomass into high-value adsorbents, offering a solution that addresses both environmental concerns and economic feasibility.
研究领域:
环境科学
·
材料科学
·
碳材料
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气候变化缓解
·
吸附技术
✓ 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）