CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Delin Yin,Lei Chen,Junmei Chen,Jin Yuan,Jianguo Liu,Xin Kong
Perfluorooctanoic acid (PFOA) is a persistent emerging contaminant that has attracted increasing attention due to its recalcitrance and toxicity. This study demonstrates the efficacy of a zero-valent iron (Fe 0 ) mediated biogas upgrading system for simultaneous PFOA degradation and methane production, with PET microplastics playing a secondary role in the degradation process. At a PFOA dosage of 0.3 mg/L, defluorination efficiencies ranging from 21.22% to 31.98% were achieved after five biogas upgrading cycles (approximately 25 days), accompanied by enhanced CO 2 methanation performance (ultimate CH 4 content >95%). At a PFOA concentration of 10 mg/L, analysis of extracellular polymeric substances (EPS) revealed a significant decrease in protein content within the reactors. Molecular docking models and reactive oxygen species (ROS) analyses suggested that the binding of PFOA to specific amino acid residues mitigated its cytotoxicity. The microbial community in the Fe 0 -mediated reactor was dominated by Methanosaeta , a strictly acetoclastic methanogen. Furthermore, metagenomic analysis indicated the upregulation of key genes associated with methanogenesis and fluoride transport under Fe 0 mediation. Characterization of infrared spectrum and fluorinated metabolic intermediates suggested that PFOA degradation proceeded primarily via stepwise decarboxylation pathways. This study not only confirms the roles of Fe 0 and PET microplastics in PFOA removal but also reveals the synergistic metabolic coupling between defluorination and methanogenesis, therby elucidating the mechanisms of Fe 0 -enhanced PFOA degradation.
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APPLIED CATALYSIS A-GENERAL
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2026
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IF 4.8
Youwei Wu,Ning Zhou,Tingyan Peng,Weixin Ma,Lili Qiu,Fei Xue,Zhifeng Dai,Yubing Xiong
Poly(ionic liquids) (PILs) offer many inherent advantages in material design, owing to their tunable structure, polarity, and versatile functionalization capability. These properties make PILs highly promising candidates for heterogeneous catalysis, especially carbon dioxide (CO 2 ) conversion and utilization. In this work, a triazine-functionalized isocyanate monomer and an amino-functionalized imidazolium-based PIL were designed and synthesized. Through the addition polymerization, a family of novel urea- and triazine-functionalized porous PIL heterogeneous catalysts (denoted as p-PIL-x) were prepared. The resulting materials were thoroughly characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and CO 2 adsorption measurements. The catalysis evaluation revealed that p-PIL-x promotes efficient CO 2 conversion via intramolecular synergy among the urea, triazine, and imidazole motifs, all of which are rich in nitrogen species. Under optimized conditions (0.1 MPa, 80 °C, 24 h), the catalyst achieved a cyclic carbonate yield of 94.33% with 99% selectivity. The reaction mechanism was further elucidated through density functional theory (DFT) calculations and in situ FT-IR measurement, which highlighted the cooperative role of hydrogen-bond donors and bromide ions in activating both the epoxide substrate and CO 2 . The synthesized p-PIL-x catalyst exhibits excellent heterogeneity, stability, and recyclability, offering a promising platform for the development of multifunctional heterogeneous catalysts toward efficient and sustainable CO 2 conversion.
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AICHE JOURNAL
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2026
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IF 4.4
Hong Quan,Yaxing Zhang,Can Lv,Yimin Deng,Helei Liu
A biphasic aqueous solvent of 25% aminoethylethanolamine (AEEA)/50% diethylethanolamine (DEEA) has attracted much attention because of its cheap raw material, fast CO 2 absorption rate and low adsorption/desorption energy consumption. In this work, the mass transfer model of CO 2 absorption into biphasic solvent of DEEA–AEEA in structured packed columns was investigated. The influence of operating parameters on K G a v in a regular packed column is investigated and discussed. Meanwhile, mass transfer mechanism of CO 2 absorption into biphasic solvent of DEEA–AEEA was comprehensively examcned. In addition, the prediction model of K G a v is constructed by introducing the phase separation volume, and the error of the empirical correlation is 7%. On this basis, three machine learning algorithms, that is, backpropagation neural network (BPNN), radial basis function neural network (RBFNN) and random forest (RF) algorithms, were used to construct the K G a v model, and the AAD of the models was less than 3%.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Zhe Zhang,Chi Zhang,Qiaochu Zhou,Yiyang Wang,Fang Li,Qiming Li
A continuous and dense ZIF-8 membrane was successfully synthesized on α-Al 2 O 3 supports via a combined approach of ammonia modulation and solvothermal synthesis. A unique synergistic promoting effect between ammonia solution and ZnO nanoarrays was identified through comparative investigation of ammonia and ethylenediamine as alkaline additives. The as-prepared membranes were characterized by X-ray diffraction (XRD), thermogravimetric analysis (TG), and scanning electron microscopy (SEM). Experimental results demonstrated that ammonia facilitates rapid conversion of the ZnO interlayer, shortens crystallization time, and mitigates intracrystalline defects, while an appropriate increase in 2-methylimidazole (2-MIM) concentration enhances ZIF-8 crystal growth and crystallization—collectively ensuring membrane continuity and denseness. Gas separation performance tests indicated that when the 2-MIM concentration was 0.05 mol·L −1 with ammonia addition, the ZIF-8 membrane exhibited a substantially high H 2 /CO 2 selectivity of 15.04, exceeding the corresponding Knudsen diffusion selectivity. This study effectively enhances the structural integrity and separation performance of ZIF-8 membranes.
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APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Jin Zhang,Zixin Chen,Zerong Bian,Huixian Ma,Kun Liang,Meiling Liu,Xincheng Li,Yunwei Wang,Ruiyi Wang,Zhanfeng Zheng
Anion modification offers a promising approach for the specific conversion of reaction substrates in catalytic processes. In this study, we synthesized Pt-based metal nanocatalysts on a TiO 2 support and modified them with PO 4 3- anions, thereby achieving a complete shift in CO 2 hydrogenation products from CO to CH 4 . The original Pt-P 0 /TiO 2 catalyst exhibited a low degree of CO 2 conversion (4.5%), and the hydrogenation products comprised primarily CO. In contrast, the Pt-P 3 /TiO 2 catalyst modified with PO 4 3- anions exhibited a 5.2-fold increase in the degree of CO 2 conversion (23.2%) and excellent methane selectivity. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and CO-temperature-programmed desorption (TPD) characterization revealed distinct reaction pathways. Notably, the desorption of CO intermediates predominated for the Pt-P 0 /TiO 2 catalyst, whereas further hydrogenation of CO prevailed on the surface of the Pt-P 3 /TiO 2 catalyst. The results of X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) calculations indicated that PO 4 3- anions adsorbed preferentially at Pt metal sites, modulating the surface electronic properties of the Pt metal and its adsorption and desorption behaviours towards CO, thereby increasing the CO 2 conversion efficiency and causing a shift in hydrogenation products. This work provide valuable insights for designing high-performance catalysts for ensuring sustainable CO 2 conversion.
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Shuo Liang,Huizhen Liu,Fan Yang,Weilin Dou,Yanmin Guo,Chunyan Lai
Lithium‑carbon dioxide (Li-CO 2 ) batteries, combining high energy density with carbon dioxide conversion capability, were recognized as a promising next-generation energy storage system. However, their practical application is still hindered by the sluggish kinetics of the carbon dioxide reduction reaction (CO 2 RR) and the carbon dioxide evolution reaction (CO 2 ER). Herein, a self-supporting heterostructure catalyst composed of amorphous CoS x and crystalline MnS (a-CoSₓ/c-MnS) has been designed based on an amorphous/crystalline interface synergistic strategy. This unique interface induces strong electronic coupling and charge redistribution, which optimizes the adsorption of reaction intermediates and thereby significantly enhances the bifunctional activity for both CO 2 RR and CO 2 ER. Simultaneously, the three-dimensional (3D) urchin-like open architecture provides multi-level channels for electron, ion, and gas transport. The interface regulates Li 2 CO 3 discharge products into a loose, porous network of blocky crystal clusters effectively, enabling easier decomposition and mitigating passivation. The Li-CO 2 battery based on the a-CoSₓ/c-MnS cathode exhibits an ultra-low overpotential of 0.22 V, a high Coulombic efficiency of 98.62% and an energy efficiency of 91.38%. Furthermore, the battery demonstrates stable cycling for over 2000 h at a limited capacity.
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DOI
PubMed
高影响因子
ACS Omega
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2026
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IF 5.2
Jiaozhu Wu,Jiaxi Zhang,Xutao Zhang,Haoyu Ma,Jie He,Qiang Liu,Guangxian Li,Pengjian Gong
Abstract The microwave absorption performance depends on both impedance matching and electromagnetic energy dissipation. Conventional filler-functionalized polyimide (PI) composites can provide strong electromagnetic attenuation, but their limited foamability under supercritical carbon dioxide (scCO2) restricts porous structure formation and thus impairs impedance matching. To address these limitations, this study proposes an intrinsic molecular modification strategy based on a chain segment design. Furthermore, by combining synergistic dielectric-magnetic loss from nanofillers with a double-layer heterogeneous architecture, a PI-based electromagnetic shielding nanocomposite with strong microwave absorption performance and low-reflection characteristics was constructed. Bisphenol A dianhydride (BPADA) was used as the dianhydride monomer, and a series of PI copolymers with tunable chain segment compositions were prepared through the reaction of BPADA with mixed aromatic diisocyanate (MDI) and aliphatic diisocyanate (HDI), followed by thermal imidization/cyclization. The changes in molecular chain mobility, scCO2 foaming behavior, and cellular structure associated with the nominal HDI feed fraction were systematically investigated. The results showed that increasing the nominal HDI feed fraction was associated with an improved rigid-flexible balance of the PI backbone, enhanced segmental mobility, a broader foaming window, and the formation of PI foams with uniform and compact cellular structures. CNT@Fe3O4 nanofillers with both dielectric and magnetic loss capabilities were further introduced to improve the intrinsic electromagnetic loss of the composite foams. The calculated microwave absorption results showed that, after pore structure regulation, the PI/CNT@Fe3O4 nanocomposite foam exhibited markedly enhanced microwave absorption in the X-band. At a porosity of 46 vol %, the minimum reflection loss reached −38 dB at a thickness of 2 mm. A double-layer heterogeneous structure comprising a CNT@Fe3O4-containing porous absorbing layer and a CNT-containing dense reflecting layer was then constructed to exploit impedance gradient transition, dielectric-magnetic synergistic loss, and multiple reflection/reabsorption processes. The optimized sample showed an average absorption coefficient of 0.92 in the X-band and a maximum A/R ratio of 332, indicating pronounced high absorption and low reflection characteristics. This study provides a new strategy for designing and fabricating lightweight, high-performance PI-based electromagnetic protection materials with an absorption-dominated shielding behavior.
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ACS Applied Polymer Materials
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2026
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IF 5.2
Yuqi Sun,Ziliang Wang,Xue Wang,Yutong Liu,Baixue Li,Yusheng Qin
Abstract CO2-based polycarbonates represent an important class of sustainable polymers derived from carbon dioxide utilization. However, the inherent absence of functional groups hinders the use of these materials in high-value applications. To address this challenge, we combined click chemistry with the Kabachnik–Fields reaction for sequential postpolymerization modification of CO2-based polycarbonates. This strategy not only introduced biobased multifunctional pendants along the polycarbonate backbone but also enhanced the mechanical strength, thermal stability, flame retardancy, and hydrophilicity of the resulting films. Notably, the incorporation of α-aminophosphonate via the Kabachnik–Fields reaction imparted the resulting polymers with unconventional fluorescence and typical aggregation-induced emission (AIE) characteristics. This work provides a general and robust strategy for the rational design of functional aliphatic polycarbonates toward practical applications.
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ACS Applied Energy Materials
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2026
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IF 5.5
Fuwei Sun,Yao Li,Ziang Huang,Weigang Liu,Chao Liu,Rui Wang,Pengcheng Li,Chen Wang,Bo-Qing Xu,Guangtao Li
Abstract Au/TiO2 is a promising photocatalyst for CO2 reduction, yet its performance is often limited by inefficient light utilization and insufficient local CO2 availability. Here, we present an integrated photocatalytic platform by embedding Au/TiO2 nanoparticles within imidazolium poly(ionic liquid) (PIL) nanocone arrays. The nanocone architecture provides broadband light harvesting with > 99% absorptivity, while the imidazolium PIL enriches CO2 near the catalytic sites, enabling synergistic enhancement of CO2 photoreduction. The intrinsic counter-anion exchangeability of the PIL further enables programmable regulation of the overall catalytic activity and product formation selectivity. By optimizing the counter anion and water supply, the system selectively produces CO (124.89 μmol·g–1·h–1, 94.2% selectivity) or CH4 (137.75 μmol·g–1·h–1, 100% selectivity). Metalloporphyrin counter anions additionally enable C2 product formation, while functional catalytic anions allow cascade conversion of CO2 into polymeric products. This work demonstrates an integrated strategy that couples light management, substrate enrichment, and reaction programmability for efficient and versatile solar-driven CO2 conversion.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Mei Yang,Jingtian Yang,Ruobing Pi,Pingtao Fang
Corn-straw-derived CQDs are prepared via a hydrothermal method. • CN/NC/CQDs-6 achieves a CO evolution rate of 37.37 μmol g −1 h −1 . • CQDs improve charge separation and facilitate interfacial charge transport. Photocatalytic CO 2 reduction is a promising approach for mitigating energy shortages and carbon emissions. Herein, graphitic carbon nitride (g-C 3 N 4 ) was employed as the substrate and combined with hydrothermally synthesized NiCo-LDH, followed by the introduction of carbon quantum dots (CQDs) to fabricate a series of CN/NC/CQDs-x ternary composites. The composite exhibited enhanced absorption in the visible spectral region and improved photoinduced charge-separation behavior. Meanwhile, the integration of NiCo-LDH, g-C 3 N 4 , and CQDs promoted interfacial coupling, suppressed the recombination of photogenerated carriers, and facilitated charge separation and transport within the ternary composite. In addition, the CO 2 photoreduction activity of CN/NC/CQDs-x composites was evaluated. Among the prepared samples, CN/NC/CQDs-6 shows the best photocatalytic performance, achieving a CO generation rate of 37.37 μmol g −1 h −1 , which is 26.31 times that of pristine g-C 3 N 4 . This work provides insights into the development of biomass-derived CQD-modified g-C 3 N 4 photocatalysts for efficient CO 2 reduction.
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SusMat
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2026
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IF 19.2
Yongzheng Gao,Xin Tao,Yanli Chen,Xinqian Yu,Yijun Zhu,Yongchao Liang,Qiong Peng,Xiu Gong,Xiaosi Qi,Guangmin Zhou
Spinel oxides have attracted increasing attention as cathode in Li–CO 2 batteries because of their cost–effectiveness and facile synthesis. Unfortunately, their catalytic activity for CO 2 reduction reaction and CO 2 evolution reaction remains below the necessary for the implementation at scale. Here, the introduction of first–row 3d transition metals (TMs) in Fe 3 O 4 can construct an asymmetric M–O–Fe backbone, which is defined as the bond strength polarization and leads to continuous modulation in the electron activity (TM used in this work including Mn, Co, Ni, and Cu). Theoretical calculations confirm that the bond strength polarization can optimize the adsorption behavior of the reactants (CO 2 , Li + , and Li 2 CO 3 ), promoting the catalytic activity toward CO 2 reduction and CO 2 evolution. Experimental and theoretical results display a volcano–shaped relationship between the bond strength polarization and the catalytic activity in the TM–doped Fe 3 O 4 cathodes. The decisive role of the discharge product morphology in battery performance is also delineated. These findings enable the design of an efficient catalyst, Mn–Fe 3 O 4 , which can run stably up to 2000 h with a low voltage gap of ∼0.8 V. This work offers a rational viewpoint for tuning the catalytic activities of TM oxides in Li–CO 2 batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Luoqi Xie,Fei Liu,Shangyan Zhou,Jiamin Wang,Jinjin Sun,Zaiyin Hu
A Pd-MX/GaZnZrO x hybrid catalyst was developed for CO 2 hydrogenation. • MXene acts as a hydrogen-delivery platform beyond a conventional support. • Interfacial coupling promotes H 2 activation and CO 2 conversion synergistically. • A methanol STY of 600.2 mg gcat −1 h −1 was achieved at 320 °C. • DFT and DRIFTS confirm an accelerated formate-mediated pathway. Efficient CO 2 hydrogenation to methanol requires a balanced interface where CO 2 activation is coupled with H 2 dissociation and subsequent hydrogenation. Herein, a Pd-modified MXene (Pd-MX)/GaZnZrO x hybrid catalyst was developed by integrating Pd-modified MXene with Ga-modified ZnZrO x oxide to overcome the limited hydrogen activation ability of Cu-free oxide catalysts. In this architecture, Pd provides H 2 dissociation sites, GaZnZrOx contributes to CO 2 adsorption and activation through its surface oxygen-related sites, and promotes the formation and hydrogenation of formate- and methoxy-related intermediates. Under 320 °C, 3.0 MPa, H 2 /CO 2 = 4:1, and GHSV = 24,000 mL gcat −1 h −1 , Pd-MX/GaZnZrO x achieved 10.5% CO 2 conversion, 83.26% methanol selectivity, and a methanol space-time yield of 600.2 mg gcat −1 h −1 , outperforming GaZnZrOₓ and Pd/GaZnZrO x while maintaining stability over 100 h. Spectroscopic characterization and DFT calculations reveal that MXene coupling enriches electrons on Pd, facilitates H 2 activation, improves interfacial adsorption behavior, and stabilizes formate- and methoxy-related intermediates. These results support a contact-dependent Pd-MX/GaZnZrO x architecture that enhances H 2 activation and facilitates the hydrogenation of CO 2 -derived intermediates over the Cu-free oxide catalyst. Download: Download high-res image (153KB) Download: Download full-size image
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