CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Wenhao Liu,Qingcai Chen,Tengfei Xu,Sitong Liu,Yifan Sun,Huadong Huang
Low-cost support materials and simple synthesis methods can significantly reduce the cost of solid amine technology, which is crucial for its commercialization. This research work utilized blast furnace slag as raw material and adopted a green, simple treatment method to prepare the support materials (BFSC), which exhibited high specific surface area (238.83 m 2 /g) and pore volume (1.09 cm 3 /g). The main component of the support material is magnesium aluminum metasilicate. The support material was modified with different contents of polyethyleneimine (PEI) and tetraethylenepentamine (TEPA), the results showed that BFSC-50 %TEPA exhibited the best CO 2 adsorption performance (3.27 mmol/g). Subsequently, the effects of adsorption conditions on BFSC-50 %TEPA were investigated, including temperature, humidity, and different gas compositions. In atmosphere condition of 15 % CO 2 and 85 % air (with 60 % humidity), high temperatures promote the formation of a urea derivative, which significantly impairs the material’s CO 2 adsorption capacity. Finally, the cyclic stability of BFSC-50 %TEPA was tested.
研究领域:
环境科学
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化学工程
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材料科学
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碳捕集与封存
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2024
·Vol. 154
·期 7
·3829-3838
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IF 2.3
Wang Mingyue,Li Ting,Tian Yuhao,Zhang Jiarong,Cai Weijie
To develop high-performance catalysts for greenhouse gas CO 2 reforming with ethanol (EDR) is progressively inspired by the urgent requirement of CO 2 elimination in order to meet with the sustainable development. In this work, the bimetallic Co(Ni)/ZnO catalyst derived from MOFs was investigated in detail with a focus on the effect of Ni dopant. The EDR results indicated that the bimetallic Co(Ni)/ZnO catalyst presented better activity as well as less formation of byproducts in comparison with the monometallic Co/ZnO catalyst. 100% of ethanol conversion was obtained at 500 °C for Co(Ni)/ZnO versus 650 °C for Co/ZnO. Moreover, no acetone formation was observed over Co(Ni)/ZnO catalyst while the concentration of acetone in Co/ZnO was as high as 10 mol%. Characterization results depicted that the strong synergistic effect between Ni and Co in Co(Ni)/ZnO catalyst might greatly stabilize active metal cobalt with smaller particle size, improve the reducibility and facilitate the generation of oxygen defects, thereby enhancing the catalytic performance. To a certain extent, this work might contribute to the design of efficient catalysts for other catalytic applications. Graphical
研究领域:
催化
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环境化学
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材料科学
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绿色化学
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能量转换
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2018
·Vol. 53
·期 16
·11595-11606
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IF 2.993
Wu Keliang,Dong Xuejun,Zhu Junfang,Wu Pengcheng,Liu Chang,Wang Yixi,Wu Jianning,Hou Juan,Liu Zhiyong,Guo Xuhong
The nanostructured heterojunction photocatalysts are considered promising in photocatalytic reduction in the carbon dioxide. Herein, we demonstrate a simple sol–gel and hydrolysis process to design nanostructured TiO 2 /ZnO heterojunction, by using the biological template celery stalk. The nanostructured photocatalyst consists of anatase TiO 2 and wurtzite ZnO nanoparticles. A well-connected heterojunction, with uniformly distributed nanoparticles, on the pores and folds of celery stems, is obtained. The enhanced specific surface area of 55.5 m 2 /g is achieved. The crystal structure, morphology and surface composition are investigated by electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. Furthermore, we demonstrate the photocatalytic performance of as-synthesized nanostructure TiO 2 /ZnO heterojunction. The photocatalytic yield, of CO 2 reduction into CH 4 , exhibits a five times increase, from 0.55 to 2.56 µmol h −1 g −1 , for the nanocomposite as compared to the pure TiO 2 . This enhanced performance corresponds to the efficient charge transfer and hindrance in the recombination of electron–hole pairs due to the optimum band positions of ZnO and TiO 2 . This study demonstrates the potential of using biotemplates to design efficient photocatalysts to convert CO 2 into useful solar fuels.
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
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可持续能源
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Linglong Wang,Bangyan Zhang,Yang Song,Tao Gan,Jiansong Miao,Peng Zhang,Jingjing Jiang,Chunming Xu,Xiaohui Sun
Nitrogen-doped carbon nanoparticle-supported single-iron-atom catalysts (denoted as Fe-N-C) have been widely investigated in the electrocatalytic CO2 reduction reaction (CO2RR). However, for most Fe-N-C catalysts fabricated via high-temperature pyrolysis, abundant active Fe sites are buried in the bulk of microporous carbon substrate, with poor accessibility. The morphology limitation immensely alleviates the exposure of active sites at the critical three-phase interfaces and hinders the mass transfer of reactant molecules within electrodes. Herein, we present a facile soft-template coating approach to fabricate a core–shell Fe-N-C catalyst with highly accessible Fe sites at the surface by pyrolysis of an iron-coordinated polydopamine-coated ZIF-8 composite precursor. The unique core–shell structure of Fe-N-C shortens the diffusion path of ions and CO2, and it facilitates CO product elimination. Such an electrode assembly significantly boosts the electrocatalytic CO2RR in a gas-diffusion-electrode with a CO Faradaic efficiency (FECO) of ∼97% at an industrial current density of 100 mA/cm2. This work sheds light on the synthesis of single-atom catalysts with highly accessible active sites in surface layers for the CO2RR and other electrocatalytic reactions with high activity and efficient mass transport.
研究领域:
电催化
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纳米技术
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材料科学
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环境化学
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能量转换
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Zhen Liu,Wenji Zheng,Ziheng Li,Yan Dai,Xiaobin Jiang,Xiujuan Zhang,Xuehua Ruan,Xuemei Wu,Gaohong He
Polyethylene glycol dimethyl ether (PEGDME) is proposed to incorporate into PTMSP fibers to prepare an electrospun fiber composite membrane (EFCM) to break the trade-off limit. The abundant ether-oxygen groups in PEGDME can enhance CO2 affinity, improving its selective permeation. Meanwhile, PEGDME has a similar chemical structure with the pore-filled polymer PEO, resulting in intensified interfacial affinity between PTMSP fibers and PEO. Moreover, the high permeability and continuous structure of PTMSP fibers can provide a fast transmission channel for CO2, leading to elevated CO2 permeability. The EFCM exhibits a dense and defect-free structure with fibers distributed uniformly in PEO. The CO2 separation performance increases with the increase in the PEGDME content, and EFCM-30 presents the best CO2/N2 selectivity of 45.46 and CO2 permeability of 753 Barrer, which are increased by 31.5 and 58.5%, respectively, in comparison with EFCM-0. This excellent performance exceeds the 2008 Robeson upper bound.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Ziyi Zhang,Huiqing Dong,Dongxu Zhou,Kexin Tang,Yidi Ma,Tao Han,Jianqiu Lei,Shoushuang Huang,Xiaodong Zhang,Liang Tang,Ning Liu
Photocatalytic CO 2 reduction is a promising strategy to address both environmental issues and energy crisis. Defect engineering offers great potential for improving the photocatalytic performance. Herein, we report an innovative approach to introduce defects in MIL-68(In) via electron beam irradiation for the photoreduction of CO 2 into CH 4 . The irradiated X-MIL-68(In) (X mean the irradiation dose) retained the crystal structure and morphology of pristine MIL-68(In), while generating novel organic framework defects. These defects significantly improved the CO 2 photoreduction activity, with 300-MIL-68(In) achieving the highest CH 4 rate of 87.5 μmol g −1 h −1 and a CH 4 selectivity of 74.8 %. Comprehensive ex situ and in situ characterizations, combined with DFT calculations, demonstrated that defects formation in 300-MIL-68(In) accelerated the separation and transfer of photoexcited carriers, thereby driving its superior photocatalytic performance. Furthermore, In situ DRIFTS along with DFT calculations confirmed that ⁎ COOH, ⁎ CHO and ⁎ CH 2 O were key intermediates during CO 2 reduction process. This work highlights electron beam irradiation as an effective strategy for defect engineering, offering new opportunities for tuning the performance of photocatalysts.
研究领域:
材料科学
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环境科学
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纳米技术
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催化
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物理化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2025
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IF 2.1
Guangjie Chen,Guangying Chen,Ge Gao,Li Sze Lai,Swee Pin Yeap,Wee Horng Tay,Helei Liu
The utilization of biphasic absorbents for CO2 capture can substantially reduce energy consumption. This study investigated the mass transfer kinetics and thermodynamics of the phase separation absorption process using 1-amino-2-propanol (MIPA)/sulfolane (TMS) biphasic solvents. 13C NMR spectroscopy was employed to analyze the species in different CO2-loaded solutions. The direction and extent of species transfer during the absorption process were elucidated and the phase separation mechanism was explored. CO2 absorption kinetics were studied in a wetted-wall column, and the physicochemical properties and the absorption reaction kinetics data under different experimental conditions were obtained. Results showed the overall mass transfer coefficient (KG) was 1.6 times higher than 30 wt % MEA and twice that of DETA/TMS solution. NMR and kinetic data analysis revealed that phase separation is mainly contributing to the deterioration of the mass transfer process in biphasic solution, reducing the liquid-film mass transfer coefficient (KL) by 63.2% during the phase separation stage. Furthermore, the desorption heats of different biphasic solvents with identical amine concentrations were measured using a microcalorimeter. Findings indicated that TMS did not alter the thermodynamic properties of the solution. Since only the CO2-rich phase is regenerated, the energy consumption is significantly reduced compared to that of MEA.
研究领域:
化学工程
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环境科学
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物理化学
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分析化学
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能源技术
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Jie Tian,Zhijian Wang,Yaqin Hou,Yatao Yang,Haijun Chen,Zhanggen Huang
Inorganic Bi-based halide perovskites have attracted significant attention in the field of CO 2 photoreduction due to their excellent optoelectronic conversion performance and low toxicity. However, the inherent strong localization of electron-hole pairs remains the main factors limiting charge carrier transport and CRR performance. In this work, CBSB-x NCs with different Bi/Sb ratios were synthesized assisted by ultrasound methods to manipulate carrier behavior and assess CRR performance. The photoelectrochemical properties revealed that incorporation of Sb effectively suppressed nonradiative recombination and improved transport efficiency of charge carriers. Among the bimetallic variants, CBSB-1 NCs exhibited enhanced catalytic performance in CO production, with a yield of 38.77 μmol·g −1 and a high selectivity of 96.53 %. In-situ DRIFTS and DFT calculations indicated that Sb as co-catalytic sites promote charge transfer at the Bi-Br-Sb interface, accelerate the rapid evolution of b-CO 3 2- to HCOO - and significantly reduce the reaction energy barrier of CO.
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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光化学
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
·
IF 5.951
Weize Yang,Jianzhong Zheng,Shirong Hu,Wuxiang Zhang,Chan Wei,Peihui Dong,Yaru Yan,Haixia Hu
Three-dimensional (3D) Co2(OH)3Cl-MnO2 hybrid sphere was first obtained through a facile solvothermal microwave-assisted synthesis method. Because of the 3D sphere structure with a flowerlike morphology built up by nanosheets, this type of hybrid accelerated ion transfer as well as the charge and simultaneously maximized the electroactivity of Co2(OH)3Cl or MnO2 with a high capacitance of 942.2 F g–1, which was greater than that of the single Co2(OH)3Cl or MnO2. Meanwhile, an asymmetric supercapacitor device was assembled with the hybrid and active carbon (AC) as the positive and negative electrodes, which yielded a specific capacitance of 49.26 F g–1 and a high energy density of 12.62 Wh kg–1 at a power density of 679.10 W kg–1. In addition, the capacitance of this device retained 83.77% after 5000 cycles, which showed a well-defined, long cycle life.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Shui Yang,Jialing Song,Yihua Yue,Bin Chen,Sajid Ali,Kok Bing Tan,Jian Tian,Jiale Huang,Qingbiao Li,Guowu Zhan
CO 2 hydrogenation to high-value-added light olefins over bifunctional catalysts is a promising pathway toward achieving net zero emissions. Herein, a series of SAPO-34 zeolites (bio-SAPO-34) with consistent acid properties but different particle sizes ( e.g. , 170 nm, 610 nm, and 7.50 μm) were synthesized using rice husk as the sole silicon source. Meanwhile, the rice husk derived SiO 2 (bio-SiO 2 ) could serve as a platform to assemble SAPO-34 and ZnZrO x into a bifunctional catalyst. It was found that the bio-SAPO-34 with the smaller particle size resulted in higher selectivity of light olefins and better long-term stability. Especially, after integration with ZnZrO x , the bio-SAPO-34 with a particle size of 170 nm exhibited higher light olefins selectivity (89.6 vs. 58.5 %) and longer catalytic lifetime (1000 vs. 59 min), as compared to a particle size of 26.0 μm. Notably, the zero length column (ZLC) technique, N 2 physisorption, and thermogravimetric analyses revealed that reducing the particle size of bio-SAPO-34 significantly decreases the diffusion resistance of light olefins in zeolites by shortening the diffusion paths, thereby inhibiting the formation of coke and enhancing the catalytic stability. Moreover, the bio-SiO 2 platform acts as a light olefins diffusion promoter by decreasing the surface diffusion resistance between zeolite particles and significantly alleviating the coke formation.
研究领域:
催化
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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
✓ 已验证
产品关联
DOI
高影响因子
Applied Sciences-Basel
·
2025
·Vol. 15
·期 14
·8095
·
IF 2.5
Liqun Wu,Xiaojun He,Jian Zhou
The electrocatalytic CO2reduction reaction (CO2RR) offers an energy-saving and environmentally friendly approach to producing hydrocarbon fuels. The use of a gas diffusion electrode (GDE) flow cell has generally improved the rate of CO2RR, while the gas diffusion layer (GDL) remains a significant challenge. In this study, we successfully engineered a novel metal–organic framework (MOF) heterojunction through the controlled coating of zeolitic imidazolate framework (ZIF-L) on ultrathin nickel—metal–organic framework (Ni-MOF) nanosheets. This innovative architecture simultaneously integrates GDL functionality and exposes abundant solid–liquid–gas triple-phase boundaries. The resulting Ni-MOF@ZIF-L heterostructure demonstrates exceptional performance, achieving a formate Faradaic efficiency of 92.4% while suppressing the hydrogen evolution reaction (HER) to 6.7%. Through computational modeling of the optimized heterojunction configuration, we further elucidated its competitive adsorption behavior and electronic modulation effects. The experimental and theoretical results demonstrate an improvement in electrochemical CO2reduction activity with suppressed hydrogen evolution for the heterojunction because of its hydrophobic interface, good electron transfer capability, and high CO2adsorption at the catalyst interface. This work provides a new insight into the rational design of porous crystalline materials in electrocatalytic CO2RR.
研究领域:
电化学
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材料科学
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环境科学
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纳米技术
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Qi Tan,Zhiwei Liu,Yao Zhang,Yongle Xia,Xiaoyi Zhang,Bingliang Gao
Efficient recovery of CO 2 from industrial flue gas and its subsequent resource utilization have gained significant attention in recent years due to growing environmental and energy concerns. In this paper, a series of ternary vitreous mixture solvents (VMSs) composed of a superbase-alcohol system and functional additives, such as succinimide (Suc), n-hydroxysuccinimide (HOSu), and 2-imidazolidinone (IM), were synthesized for CO 2 capture. The effects of various additives on both the CO 2 capture capacity and the physicochemical properties of the system were systematically investigated. Among the systems tested, 1,5-diazabicyclo[4.3.0]non-5-ene (DBN)−Methanol (MeOH)−Suc (1:1:0.1) exhibited the highest absorption performance, achieving an absorption capacity of 0.274 g CO 2 /g VMS at 25℃ and 1 bar. Notably, the DBN−MeOH−Suc VMS maintained a CO 2 removal efficiency exceeding 90 % even under a low CO 2 partial pressure corresponding to a volume concentration of 1.7 %. Furthermore, nearly complete CO 2 desorption was achieved within 15 min at 60℃ under a nitrogen atmosphere. A CO 2 absorption mechanism was proposed based on NMR and FTIR spectroscopic investigations, as well as quantum chemical calculations. The results suggest that both deprotonated alcohols and additives synergistically participate in CO 2 capture. The VMSs developed in this work offer multiple advantages, including simple synthesis, high CO 2 absorption and desorption kinetics, low post-absorption viscosity, low desorption temperature, and excellent recyclability. These features collectively provide an innovative pathway for the advancement of next generation CO 2 absorbents.
研究领域:
环境科学
·
化学工程
·
材料科学
·
物理化学
·
碳捕集与封存
✓ 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）