JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Jie Liu,Kaiyu Li,Shizhen Gao,Guohua Wu,Jing Fan
Efficient photocatalytic CO 2 reduction is limited by rapid carrier recombination and sluggish interfacial kinetics. Here, NiFe-LDH/ZnCdS (ZCS) heterostructures were fabricated by hydrothermal synthesis followed by electrostatic self-assembly. Mott–Schottky analysis, XPS, photoelectrochemical measurements, and density functional theory calculations collectively reveal staggered band alignment and interfacial charge redistribution, supporting a type-II charge-transfer pathway with improved carrier separation. The optimized 15NiFe-LDH/ZCS produced CO, CH 4 , C 2 H 4 , and C 2 H 6 at 16.54, 8.30, 1.22, and 4.70 μmol g −1 h −1 , respectively, while maintaining stable activity over 16 h. The enhancement originates from intimate interfacial contact, stronger visible-light harvesting, faster charge transport, and increased accessible active sites. These results establish a practical heterostructure-design strategy for multi-electron photocatalytic CO 2 conversion.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Tong Wang,Wei Wu,Jiayi Zhang,Yang Xie,Xiaobing Deng,Hang Xiao,Xi Chen,Liangliang Zhu
Direct air capture (DAC) of CO₂ is pivotal for mitigating climate change, with moisture-swing adsorbents emerging as an energy-efficient approach to this end. Herein, we report ultra-high capacity quaternized polyethylene terephthalate (QPET) adsorbents fabricated via ultraviolet-induced grafting of quaternary ammonium groups onto PET substrates. The resulting QPET fabric exhibits a remarkably high adsorption capacity of 6.08 mmol/g under ambient conditions, which is 1.64 times that the prior record (3.71 mmol/g) for moisture-swing adsorbents, and is over 6 times that of the most-studied resin-based adsorbents. This exceptional performance is attributed to the high density of grafted quaternary ammonium groups and the intrinsic three-dimensional fibrous network of the PET fabric substrate, which provide abundant CO₂ adsorption sites and gas diffusion channels. The adsorbent demonstrates excellent cyclic stability, retaining consistent adsorption/desorption capacities across three full cycles and ten short-term cycles. Furthermore, its moisture-driven regeneration mechanism obviates the need for thermal or pressure inputs, while the utilization of low-cost PET substrates enhances scalability. This work provides a promising strategy for developing high-performance, cost-effective adsorbents tailored for large-scale CO₂ capture from ambient air.
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ACS Sensors
·
2025
·
IF 9.1
Jiyuan Xue,Bingcheng Shen,Juan Wang,Juan Li,Hongran Zhao,Tong Zhang
Carbon dioxide (CO2) is ubiquitous in both natural and indoor atmospheres, playing a pivotal role in global climate regulation, air quality, and biological processes. However, their chemical inertness poses inherent challenges for developing compact, high-sensitivity detection platforms. In living organisms, CO2 often modulates protein function through reversible carbamylation of lysine residues, illustrating a finely tuned molecular recognition mechanism. Inspired by this principle, we developed a bioinspired iontronic sensor by embedding lysine moieties into a cross-linked poly(ethylene glycol) diacrylate (PEGDA) hydrogel. Upon exposure to CO2, the lysine ε-amino group forms transient carbamate adducts, inducing the electrostatic interaction, which disrupts Grotthuss-like conduction pathways and causes a distinct impedance increase. This lysine-based recognition enables high selectivity over interfering gases and operates reliably under ambient conditions. The resulting hydrogel sensor exhibits excellent linearity (R2 > 0.995) from 0 to 2000 ppm of CO2, with a theoretical detection limit of ∼76 ppm, suitable for indoor and ambient atmospheric CO2 monitoring at low concentrations. Furthermore, it maintains stable performance over at least 28 days of repeated measurements and shows negligible cross-sensitivity toward common interfering gases (e.g., H2S, CH4, and formaldehyde). By harnessing lysine–CO2 carbamylation within an ion-conducting matrix, our approach provides a versatile, low-power platform for precise CO2 sensing in applications ranging from indoor environmental evaluation to plant-level respiratory monitoring.
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高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 5
·1810-1819
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IF 8.1
Xiao Hongbin,Qian Qingkai,Zang Zhigang
Recently, all-inorganic cesium lead halide (CsPbX 3 (X = Cl, Br, and I) perovskite nanocrystals (NCs) have been extensively investigated for photocatalytic carbon dioxide (CO 2 ) reduction reaction (CO 2 RR). However, because the pristine CsPbX 3 NCs suffer from severe radiative recombination, it is imperative to elaborately design heterostructures to separate electron-hole pairs for achieving efficient CO 2 RR. Herein, palladium (Pd) nanoparticles (NPs) are anchored on CsPbBr 3 NCs by a photo-assisted approach for the first time. The as-prepared CsPbBr 3 @Pd NCs not only build Schottky junctions at the CsPbBr 3 /Pd interfaces that promote the carrier separation and suppress the radiative recombination, but also exhibit lower energy barriers for photocatalytic CO 2 RR than pristine CsPbBr 3 NCs according to the density functional theory calculations. The electron consumption rate reaches a striking peak of 46.2 µmol g −1 h −1 by using CsPbBr 3 @Pd NCs as photocatalysts for CO 2 RR, which is 4.8-fold of the counterpart of pristine CsPbBr 3 NCs. This work not only presents a photo-assisted strategy for anchoring Pd NPs on CsPbBr 3 NCs, but also demonstrates the great potential of using CsPbBr 3 @Pd NCs for photocatalytic CO 2 RR.
研究领域:
材料化学
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光催化
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纳米材料
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环境化学
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能源化学
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半导体物理
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催化化学
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CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2018
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IF 2.795
Maogang He,Siqi Liu,Lihang Bai,Xiangyang Liu
Magnetic ionic liquids (MILs), combines the general properties of ionic liquid with magnetic properties, are starting to attract interest in the field of propane/propylene separation and CO 2 capture. Solubility data of propane, propylene, cyclopropane and CO 2 in magnetic ionic liquid 1-butyl-3-methylimidazolium tetrachloroferrate [bmim][FeCl 4 ] at temperatures of (303, 313, 323, 333, 343) K and pressures up to 3300 kPa were determined in the present work. The relative expanded uncertainty of solubility measurement is estimated to be less than 4% with a level of confidence of 95%. The Henry’s constants for the four gases in [bmim][FeCl 4 ] and selectivity of C 3 H 6 /C 3 H 8 in [bmim][FeCl 4 ] were calculated. And the thermodynamic properties of solvation concerned about the Gibbs energy (Δ sol G ∞ ), the enthalpy (Δ sol H ∞ ) and the entropy (Δ sol S ∞ ) of solvation were also obtained to offer knowledge for understanding the progress of gases dissolved in [bmim][FeCl 4 ]. The experimental results were correlated with a modified KK equation and NRTL equation.
研究领域:
化学工程
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分离科学
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物理化学
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环境化工
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绿色溶剂技术
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Weisong Feng,Manfen Liang,Yongjin Chen,Nuan Song,Lechen Diao,Zhichao Miao,Jin Zhou
Bismuth (Bi)-based catalysts are extensively employed for the electrocatalytic CO 2 reduction (ECR) for formate production. However, their practical application is constrained by inadequate catalytic activity and limited operational stability. In this study, two types of catalysts (carbon-supported Bi particles (Bi/C) and carbon-coated Bi particles (Bi@C)) were prepared via ligand modulation of Bi-based metal-organic frameworks. The role of interaction mode between Bi particles and carbon on the activity and stability was investigated. In contrast to the Bi/C catalyst, the coated carbon layer in the Bi@C catalyst improves charge transfer and optimizes the reaction kinetics, resulting in a higher current density and Faradaic efficiency of formate (FE formate ). Furthermore, the coated structure effectively stabilizes Bi active sites, thereby substantially improving activity in acidic electrolyte and long-term stability. The Bi@C catalyst exhibits remarkable stability in both alkaline (pH = 14.00) and acidic (pH = 1.00) electrolytes at 120 mA cm −2 , while preserving FE formate /FE HCOOH above 90%, showing promising potential for practical and industrial CO 2 electroreduction. This work can provide novel insights into the design of efficient and long-term stability Bi-based ECR catalysts.
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高影响因子
Catalysts
·
2026
·Vol. 16
·期 4
·334
·
IF 4.5
Yu Chen,Xuan Chen,Huimei Wu,Hai-Jian Yang,Qingqing Jiang,Juncheng Hu,Cun-Yue Guo
The formylation of mercaptans using CO2as a C1 source represents a sustainable and efficient strategy for converting CO2into value-added chemicals. However, to date, S-formylation still remains scarcely explored with CO2as the starting material, despite its important role in various biological processes. In this work, the S-formylation reaction between CO2and mercaptans was successfully carried out to construct C-S bonds using an inexpensive and commercially available carboxylate salt (sodium edetate) as the catalyst under mild conditions (25 °C and 0.1 MPa). Further investigations demonstrated that the present catalytic system applies to a broad substrate scope, affording moderate to excellent yields in the S-formylation of both aliphatic and aromatic thiols with CO2. To clarify the excellent catalytic performance of carboxylates in these S-formylation reactions, reaction intermediates as well as the activating effects of carboxylates on carbon dioxide and phenylsilanes were identified through control experiments and spectroscopic analysis. Based on these findings, the reaction pathway of the S-formylation process was determined, and a corresponding reaction mechanism is proposed.
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Journal of Energy Chemistry
·
2023
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IF 13.1
Tong Dou,Jinqing He,Shuteng Diao,Yiping Wang,Xuhui Zhao,Fazhi Zhang,Xiaodong Lei
As the “emission peak and carbon neutrality peak” are proceeding all over the world, CO 2 electroreduction is studied extensively as it is a powerful way to transform CO 2 into value-added products. The earth-abundant Sn-based materials and copper sulfides as electrochemical catalysts have shown activity for generating formate from CO 2 electroreduction. Herein, the composite of CuS and S-doped SnO 2 (CuS/SnO 2 -S) was synthesized by a redox reaction under room temperature. The unique structural reconstruction of CuS/SnO 2 -S nanoparticles to Cu/Sn/Cu 6.26 Sn 5 nanowires decreases the energy barrier of the adsorption of CO 2 , and increases the adsorption of *H, primarily suppressing the competing reaction of hydrogen evolution reaction (HER). As a result, at − 0.8 V vs. RHE , it reaches an electrochemical CO 2 -to-formate conversion with a Faradaic efficiency (FE) of 84.9% at a yield of 8860 µmol h −1 cm − 2 under a partial current density of ∼18.8 mA cm − 2 in an H-type reactor. This study provides significant insight into the structural evolution of the CuSn sulfides and the mechanism of formate formation.
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Nano Energy
·
2023
·
IF 17.6
Jiaqi Zhao,Zhenhua Li,Pu Wang,Peng Miao,Run Shi,Geoffrey I.N. Waterhouse,Tierui Zhang
CO photo-hydrogenation is currently attracting a lot of interest as a low energy input technology for the sustainable production of olefins . Herein, a novel photo-driven Fischer-Tropsch to olefins (FTO) catalyst was synthesized by physical mixing a layered-double-hydroxide-derived cobalt catalyst (LD-Co) with a hydrophobic polydivinylbenzene (PDVB). The obtained LD-Co/PDVB catalyst synergistically harnessed the photothermal and catalytic properties of LD-Co with the hydrophobic properties of PDVB to deliver outstanding photothermal FTO performance. Under ultraviolet-visible irradiation, hydrophobic LD-Co/PDVB delivered a higher CO photo-hydrogenation activity than hydrophilic LD-Co, together with a high olefin selectivity (42.72%−50.49%) and greatly suppressed CO 2 selectivity (2.89%−11.50%) compared to LD-Co (12.65%−30.61%) at 180–195 °C. Water vapor adsorption-desorption experiments and water-gas shift (WGS) reaction tests revealed that the hydrophobic modification acted to suppress the WGS reaction, thereby boosting the olefin production and suppressing CO 2 selectivity. The findings demonstrated that a simple hydrophobic modification can be used to regulate the activity and selectivity of catalysts for photothermal FTO reactions, opening new vistas towards improved photo-driven olefin production.
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Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 15
·8248-8255
·
IF 11.9
Liang Shen,Wenhao Zhang,Yifei Feng,Jing Xu,Minghui Zhu
Hydrogenation of CO2 to produce high-value chemicals is a response to increasing environmental and energy concerns. The target products of CO2 hydrogenation, methane and CO, are both important energy sources and raw materials for the production of higher hydrocarbons. Therefore, it is very important to understand the mechanism of selectivity control of catalysts. In this work, we aim to elucidate the selectivity regulation of Zn on Ni catalysts, which has been extensively studied in the literature without reaching a consensus. We have prepared a series of catalysts with different Zn content and systematically investigated the relationship between their structural evolution and selectivity. It is found that the introduction of Zn preferentially forms an alloy with Ni and at higher loadings is present as ZnOx, which participates in the strong metal–support interaction (SMSI). The conversion of the active sites into a Ni–Zn alloy hinders further hydrogenation of the adsorbed CO intermediates and makes the catalyst CO-selective. The presence of the Ni–ZnOx interface changes the CO2 activation mechanism from an association pathway to a redox pathway.
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Green Energy & Environment
·
2023
·
IF 13.3
Liu Han,Cheng-wei Wang,Shan-shan Luo,Ying-tang Zhou,Bing Li,Ming Liu
Employing crystal facets to regulate the catalytic properties in electrocatalytic carbon dioxide reduction reaction (eCO 2 RR) has been well demonstrated on electrocatalysts containing single metals but rarely explored for bimetallic systems. Here, we synthesize ZnSn(OH) 6 (ZSO) microcrystals (MCs) with distinct facets and investigate the facet effects in eCO 2 RR. Electrochemical studies and in situ Fourier Transform Infrared Spectroscopy (in situ-FTIR) reveal that ZSO MCs produce mainly C1 products of HCOOH and CO. The {111} facet of the ZSO MCS exhibits higher selectivity and faradaic efficiency (FE) than that of the {100} facet over a wide range of potentials (−0.9 V ∼ −1.3 V versus RHE). Density Functional Theory (DFT) calculations elucidate that the {111} facet is favorable to the adsorption/activation of CO 2 molecules, the formation of intermediate in the rate-determining step, and the desorption of C1 products of CO and HCOOH molecules.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yuhang Yang,Chuanwen Zhao,Pengxin Zeng,Yuhao Wang,Xue Qin,Yueyue Gao,Yafei Guo,Ruilin Wang,Jian Sun
Suitable molding and granulation methods are crucial, and an outstanding sphere structure can play a better role in the future scale-up industrial application of K 2 CO 3 -based CO 2 adsorbent. Water will form a large contact angle on the surface of hydrophobic solution and become sphericity water. In this work, hydrophobic powders (polyethylene (PE), TiO 2 , and SiO 2 ) were selected in the hydrophobic interface-assisted method. The CO 2 adsorption capacity of TiO 2 pellets is 0.50 mmol/g, while that of PE pellets is 0.24 mmol/g, and finally that of SiO 2 pellets is 0.36 mmol/g. Then, experiment proved that high temperature (>500 ℃) makes the hydrophobic powders (i.e, TiO 2 and SiO 2 ) lose hydrophobicity which make water molecules diffuse faster, while PE is completely decomposed at high temperature. Compared with the pellets calcined at 300 ℃, the TiO2 pellets calcinated at 500 ℃ have an adsorption capacity of 0.70 mmol/g, which is over 1.72 times that of the original pellets, and the other two hydrophobic surfaces are also improved to some extent. Additionally, the appropriate ratio of low-temperature pore forming agent (i.e., urea) can help improve the adsorption performance, while excessive addition will lead to poor CO 2 adsorption performance. In addition, the K 2 CO 3 /Al 2 O 3 pellets also exhibited desirable mechanical properties, with an optimal compressive strength of 41 Mpa. Therefore, the loss of hydrophobicity leads to more active diffusion of water molecules, which may provide a new idea for the future development of CO 2 adsorbents and other areas.
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