Journal of CO2 Utilization
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2025
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IF 8.4
Yong Liu,Junhui Bai,Yubo Lan,Jiang Zhang,Sen Liu,Jian Wang,Fajun Zhao
CO₂ foam flooding is a promising enhanced oil recovery (EOR) technique for improving sweep efficiency and mitigating gas channeling in heterogeneous reservoirs and the solubility behavior of surfactants plays a critical role in determining foam formation and stability. In this study, a representative CO₂-soluble surfactant was investigated under high-pressure conditions. Solubility tests, foam performance evaluation, and interfacial tension measurements were conducted to systematically examine the effects of surfactant solubility and dissolution rate on foam volume and stability. The results showed that at 60 °C and 22 MPa, the surfactant exhibited a CO₂-phase solubility of up to 2.4 %, which decreased to approximately 1.1 % at 90 °C under the same pressure. As the pressure increased from 8 MPa to 22 MPa, the foam half-life extended from 70 min to nearly 500 min, and the foam comprehensive index increased from 1000 mL·min to over 4000 mL·min, indicating significant performance enhancement. Additionally, as the surfactant concentration increased from 0 % to 1.2 %, interfacial tension decreased substantially, and the minimum miscibility pressure (MMP) dropped from 31.4 MPa to 27.6 MPa. Further analysis revealed that the surfactant improves foam film formation and stability through a synergistic mechanism involving “dissolution–transport–precipitation–interfacial activity regulation.” These findings provide both theoretical insights and practical guidance for the design and screening of efficient surfactants in CO₂ foam flooding applications.
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Science China-Chemistry
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2025
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IF 9.7
Liu Yuansheng,Su Hai,Li Mengjie,Fan Zehui,Ma Lanhua,Chen Qinghao,Liu Hang,Xu Yunhua
Zinc ion batteries are considered one of the most promising next-generation energy storage systems due to their high energy density, excellent safety and low cost. However, dendrite growth and side reactions, including passivation and the hydrogen evolution reaction, significantly reduce cycle life and hinder practical application. In this study, a high donor co-solvent of 1,3-dimethyl-2-imidazolidinone (DMI) is applied in an aqueous electrolyte to enhance the performance of the Zn anode. The DMI co-solvent effectively regulates hydrogen bonds in the aqueous electrolyte, modifies the solvation structure of Zn 2+ , and promotes uniform zinc deposition. As a result, the Zn‖Zn symmetrical cells demonstrate a long cycle life, and the Zn‖Cu cell exhibits a high Coulombic efficiency of 99.3%. Additionally, the full battery with V 2 O 5 · x H 2 O as cathode delivers a high capacity of 170 mAh g -1 and a capacity retention of 73% after 2500 cycles at a current density of 5 A g -1 .
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Surfaces and Interfaces
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2025
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IF 6.3
Tian Tang,Kunlu Chen,Xing Wang,Yanggu Liu,Ziwen Zheng,Xiaoqiang Shen,Liya Li,Xueyan Zheng,Shuai Xiao,Yanrong Chen,Xuesen Du
Under technologically relevant oxygen-rich conditions, the reaction mechanism for CO oxidation over platinum group metals (PGMs) is often complicated by oxide formation. Ru, as a special PGM exhibiting "pressure gap" phenomenon, its optimal active state has been proved to be an ultrathin Ru oxide, rather than pure metal like other PGMs. Therefore, it is plausible to suspect that the sharp rise of CO oxidation rate within narrow temperature range for Ru-based catalysts is not solely controlled by the O 2 activation rate. In this study, we investigated this temperature-dependent sharp rise in the CO oxidation rate through experimental and theoretical calculations. In the rate mutation region, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) detected a rapid increase in CO 2 production as the adsorbed CO species were annihilated, accompanied by a shift in the reaction orders of CO and O 2 from -0.29 and +0.59 (∼205 °C) to +0.94 and +0.15 (∼215 °C), respectively. The thermodynamic phase diagram indicates that the RuO 2 (110) surface consistently accommodates O* species, but fails to form a stable CO* phase when the temperature exceeds 580 K. Density functional theory (DFT) calculations suggest that initiating the Mars-van Krevelen ( M −vK) mechanism at low temperatures requires overcoming a relatively high activation energy (Ea 1 = 1.28 eV), hence CO prefers the Langmuir-Hinshelwood ( L − H ) mechanism on the Ru/TiO 2 surface. However, as the temperature rises, the M −vK mechanism, once initiated, the activation and reaction of O 2 assisted by oxygen vacancies are thermodynamically(△ H = -2.03 eV) and kinetically (Ea 2 = 0.37 eV) more favorable, respectively. This shift from the L − H to the M −vK mechanism significantly enhances the CO oxidation rate on RuO 2 /TiO 2 catalysts.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Wei Shan,Man Liang,Jianan Zan,Lin Liu,Lu Guo,Kwan San Hui,Min Luo,Fuming Chen
The sustainable recovery of valuable metals from spent lithium-ion batteries (LIBs) is crucial for a circular and environmentally friendly economy as the LIBs market expands. However, separating and recovering Ni 2+ and Co 2+ is challenging due to their similar physicochemical properties. This study presents a new approach to enhance Ni/Co separation by manipulating chloride coordination to impart opposite charges to the metal ions. By adjusting the Cl − concentration, Ni 2+ and Co 2+ are selectively complexed into [Ni(H 2 O) 5 Cl] + and [CoCl 4 ] 2− clusters, respectively. Coupling this coordination strategy with electrodialysis, we achieved a remarkable Ni 2+ /Co 2+ separation selectivity of up to 370.70. When applied to NCM or NCA battery leachate solutions, the separation selectivity remained high, reaching 90.60 and 109.42, respectively, despite variations in metal ion concentration ratios. This chloride coordination-assisted electrodialysis strategy offers a promising alternative for Ni/Co separation, a critical step in the hydrometallurgical recycling of LIBs
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ACS Catalysis
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2025
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IF 13.1
Yanxi Zhao,Danfeng Wu,Caiyan Long,Chengchao Liu,Yaozhen Liang,Shaorong Yang,Zhe Li,Yuhua Zhang,Xiaodong Yi,Jinlin Li,Haifeng Xiong
The size and composition of bimetallic nanoparticles (NPs) are crucial in heterogeneous catalysis owing to their vital role in controlling catalyst reactivity. However, controlling the nucleation of bimetallic NPs is a formidable challenge because the metals are prone to grow independently, forming phase-separated NPs. This study reports that support engineering can tailor the growth of NPs to form a uniformly dispersed bimetallic alloy, enhancing reactivity in catalysis. The surface of a TiN support was functionalized with O atoms to load Fe and Co NPs. For the TiN support calcined at 400 °C for 2 h (TiN–O-2), the obtained FeCo/TiN–O-2 catalyst presents the homogeneous structure of FeCo NP alloys (Co0.7Fe0.3) after treatment in H2, while other FeCo/TiN catalysts show separated Co and Fe phases. In CO hydrogenation, the FeCo/TiN–O-2 catalyst shows the highest CO conversion (77.3%), the highest C5+ selectivity (73.0%), and stability. Characterization results show that the Fe–Co-alloyed NPs (Co0.7Fe0.3) were the active sites over the FeCo/TiN–O-2 catalyst and possess a distinct ability to activate CO and C–C coupling, consistent with the results obtained from density functional theory calculations.
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FUEL
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2026
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IF 7.8
Zhiying Qiu,Yu Fang,Ting Xiong,Luna Ruan,Yixuan Wang,Cheng Chen,Junyuan Xu,Chao Liu,Zhiqing Yang,Hengqiang Ye,Lihua Zhu
The selective hydrogenation of α, β-unsaturated aldehydes to unsaturated alcohols is of great industrial significance, yet the development of highly active and stable catalysts remains a substantial challenge. This study employs hydrothermal and sodium borohydride reduction methods to synthesize high-performance PtCo/La 2 O 2 CO 3 catalysts for cinnamaldehyde selective hydrogenation. The electronic interaction between Pt and Co (electrons transferring from Pt to Co) can be precisely tailored by adjusting Pt and Co contents, which effectively modulates activation behavior of H 2 on the catalyst surface. This electronic modulation leads to distinguished catalytic activity, with PtCo/La 2 O 2 CO 3 -3 (Pt-1.75 wt%, Co-0.45 wt%) exhibiting the weakest Pt-Co interaction and thus achieving the excellent catalytic performance (cinnamaldehyde conversion-97.7%, cinnamyl alcohol selectivity-90.7%) under mild conditions (60 °C, 1.5 h, 2.0 MPa H 2 ). This study elucidates the synergistic mechanisms in PtCo bimetallic catalysts and establishes a versatile strategy for designing efficient multifunctional catalytic systems through the integration of bimetallic synergy.
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JOURNAL OF CATALYSIS
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2026
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IF 6
Jie Wang,Feng Gao,Jilei Lin,Chunjuan Zhang,Meiqing Shen,Linghui Kong,Gurong Shen
Ammonia is emerging as a promising carbon-free energy carrier. The electrocatalytic ammonia oxidation reaction (AOR), highly structure-sensitive, exhibits exceptional activity on Pt nanocubes (NCs) with (100) facets. Yet, synthesis methods employing metal carbonyl capping agents inevitably introduce residual metals, whose catalytic effects are often neglected. Here, Pt NCs synthesized with Mo(CO) 6 were found to contain trace Mo both in the bulk and at the surface. Surface Mo species, partially oxidized to MoO x , substantially modify the electronic structure of Pt(100), lowering activation barriers for rate-determining AOR steps and enhancing resistance to nitrogen poisoning. These effects collectively boost AOR performance, enabling a direct ammonia fuel cell with a Pt-154 anode to achieve a peak power density of 26.7 mW cm −2 . These results reveal the overlooked impact of capping-agent-derived contaminants in AOR and point to the deliberate incorporation of heterometallic modifiers as a viable strategy for advanced electrocatalyst design.
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Journal of Materials Chemistry A
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2026
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IF 9.2
Siyuan Peng,Yu Guo,Kun Zhu,Hao Wang,Yunrong Dai,Lifeng Yin
Tetracycline (TC) persists in aqueous environment and is difficult to remove. Peroxymonosulfate (PMS) activation has high selectivity for removal of TC. However, the existing PMS catalysts still suffer from low efficiency, low stability, and metal ion leaching. To address these issues, a cobalt single-atom catalyst on carbon nitride quantum dots (Co@CNQDs) was synthesized via a hydrothermal method and used to degrade TC. In this catalyst, atomically dispersed Co-N sites anchored on g-C3N4, strongly coupled with CNQDs formed a dense and highly accessible catalytic interface. This structure provided abundant catalytic active sites and erosion resistance stability. With PMS, only 20 mg L-1 of Co@CNQDs was required to remove almost all TC in 1 min across a wide pH and temperature range, while dissolved Co leaching remained very low. The characterization results revealed that PMS is initiated at Co-N sites via O-O bond scission to generate 1O2 as the dominant oxidant, whereas ·OH/SO4·– mainly sustain the Co(II)/Co(III) cycle. TC mainly undergoes demethylation, hydrolysis, and ring-opening, ultimately yielding small-molecule organic products, CO2 and H2O. Toxicity analysis showed that acute aquatic and developmental toxicity, bioaccumulation potential, and mutagenicity all decreased from during the TC degradation, indicating stepwise detoxification. This work develops a new stable Co@CNQDs PMS catalyst that enables efficient and environmentally friendly degradation of TC in aqueous environments.
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International Journal of Polymeric Materials and Polymeric Biomaterials
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2021
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IF 2.604
Yan Zhang,Hai-Chao Zhao,Li-Jing Zhu
Mussel-inspired bionics technology has attracted extensive attention for the surface modification of porous materials. The adhesion effect of the mussel mucin comes is mainly from hydroxylation. Hence, polysulfone membrane was modified by co-deposition of catechol with hydroxyl and L-lysine with biocompatibility. Flux of the membrane exceeds 120 L m−2 h−1, the ultra-high rejection rate to bovine serum albumin and lysozyme. Moreover, the modified membranes exhibited enhanced antifouling ability, antibacterial property and adhesion resistance to E. coli with the synergy between catechol and L-lysine. The fabricated membranes can further lay the foundation for the industrial production of deposited membranes.
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JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Chen Chen,Zhuo Chen,Yue Chen,Jinkai Chen,Xiru Ren,Haiting Li
Bowl shaped carbon nanomaterials are attractive for supercapacitor applications due to their structural advantages and excellent electrochemical performance, as demonstrated by their specific capacitance and cycling stability in this study. This article presents the shape-controllable synthesis of N/S co-doped hollow single-layer and double-layer carbon nanobowls (HSCNs (Hollow Single-layer Carbon Nanobowls) and HDCNs (Hollow Double-layer Carbon Nanobowls), respectively) for supercapacitors via a facile, sustainable, and cost-effective one-pot hydrothermal carbonization method. The micromorphology, physical properties, and chemical composition of the HSCN and HDCN samples are analyzed. According to micromorphological analyses, both HSCN-8 and HDCN-8 samples have uniform sizes, with diameters and wall thicknesses of ∼400 nm and ∼50 nm, respectively. The formation mechanism of the double-layer structure of HDCNs is discussed. Furthermore, the performances of the supercapacitors employing activated HSCN-8 and HDCN-8 (PHSCN-8 and PHDCN-8) as electrode materials are compared, demonstrating that PHDCN-8 provides a higher specific capacitance (156.0 F g −1 ) at a current density of 1 A g −1 than that of PHSCN-8. These results indicate that PHDCN-8 has a superior electrochemical performance owing to its double-layer bowl-shaped structure and relatively higher N content. These novel electrode materials have great potential for supercapacitor application.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2026
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IF 12.2
Kangrui Zhao,Yinan Dong,Xueyun Wen,Xuejie Shen,Yiru Hu,Dongli Li,Yudong Ren,Ziyi Wang,Ali R. Jalili,Dorna Esrafilzadeh,Jieyi Zeng,Hao Li,Keyu Chu,Dongbin Wang,Yongping Huang,Jingkun Jiang,Zehui Li
Long-term exposure to formaldehyde (HCHO) in indoor environment poses a serious threat to human health. Despite recent advances, conventional electrochemical HCHO sensors face significant challenges in sensitivity, selectivity, and stability, primarily due to competitive adsorption of interfering species and strong binding of reaction intermediates on the catalyst surface. To address these limitations, we developed an ammonia-assisted bimetallic synergistic templating method to construct a Pt–Co bimetallic and nitrogen-doped carbon nanotube (Pt2.32Co–N10/CNT) electrocatalyst. Compared to commercial Pt/C, the Pt2.32Co–N10/CNT exhibits a 2.73-fold higher catalytic activity, a sensitivity of 458.62 μA·mmol/(L·cm2) (4.12 times that of Pt/C), and anti-interference performance. The CNT provides a one-dimensional and high-surface-area structure that accelerates electron transfer and promotes uniform dispersion of active sites, including Pt/Co nanoparticles and Pt/Co single atoms. Importantly, the nitrogen-rich environment forms strong coordinate bonds with Pt and Co, finely-modulating their electronic configurations to suppress methanol interference via selective adsorption. Additionally, nitrogen doping effectively weakens the CO adsorption energy, mitigating the CO-induced catalyst poisoning. With integration with screen-printed electrodes, the portable Pt2.32Co–N10/CNT sensor achieves a high sensitivity of ca. 2.38 nA/ppb and retains over 96% of its initial response after 7 days, alongside a 10-fold improvement in anti-interference ability in the alcohol-rich environment. This advancement holds transformative potential for next-generation electrochemical sensors with broad applications in environmental health, medical diagnostics, and food safety.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xuan Zhou,Ding Du,Shan Qiao,Xiao Yang,Ranqing Zhang,Yuanyuan Dai,Tiejun Lin,Yunlei An,Liangshu Zhong
The Fischer-Tropsch synthesis (FTS) performance of Co/TiO 2 supported catalysts is strongly influenced by the TiO 2 crystal phase. It was found that Co/r-TiO 2 (rutile) exhibited high FTS activity, while Co/a-TiO 2 (anatase) showed negligible activity due to facile reduction of a-TiO 2 , which induced TiO x migration over Co nanoparticles under H 2 to form a strong metal-support interaction (SMSI) layer. The formed TiO x layer would encapsulate Co active sites and suppress CO chemisorption with low activity. However, when a-TiO 2 support was pre-reduced in H 2 before Co loading, the resulting Co/a-TiO 2 (H 2 ) catalyst achieved a remarkable increase for CO conversion from 0% to 60.7%. Structural characterization confirmed that H 2 pretreatment generated abundant oxygen vacancies in a-TiO 2 (H 2 ), which effectively regulated the interaction between Co and TiO 2 support. As a result, the SMSI-induced encapsulation was inhibited with more exposed metallic Co active sites, which would enhance CO chemisorption and catalytic activity. This work presents an effective H 2 pretreatment strategy for tailoring SMSI-governed interfacial structure and optimizing the FTS performance of Co/TiO 2 catalysts.
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