CHINESE JOURNAL OF CATALYSIS
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2025
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IF 17.7
Fangwei Liu,Kunkun Wei,Youwen Chen,Jingbo Hu,Yue Wang,Chengyuan Liu,Yang Pan,Xutao Chen,Shihui Zou,Jie Fan
The production of C 2 H 3 Cl from CH 3 Cl (MCTV) represents a promising non-petroleum route for synthesizing C 2 alkenes from C 1 molecules. Exploration of new MCTV catalysts is crucial for advancing sustainable chemical production. In this study, we present NaVO 3 as a surface-confined coupling center for • CH 2 Cl radicals, demonstrating its superior performance in the selective coupling of methyl chloride to synthesize vinyl chloride. By incorporating NaVO 3 onto the surface of CeO 2 , the catalyst enables effective capture of • CH 2 Cl radicals during the CH 3 Cl oxidative pyrolysis and their subsequent conversion into C 2 H 3 Cl. We experimentally validate the capability of highly dispersed NaVO 3 to controllably couple • CH 2 Cl radicals through in-situ synchrotron-based vacuum ultraviolet photoionization mass spectrometry. The results demonstrate that the dispersion of NaVO 3 on the catalyst surface has a considerable impact on the reaction efficiency of • CH 2 Cl radicals and the overall MCTV performance. This discovery holds substantial implications for the controlled C 1 radical transformation and provides a guidance for the design of catalysts for sustainable production of C 2 H 3 Cl.
研究领域:
催化
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化学合成
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可持续化学
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表面化学
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反应工程
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产品关联
DOI
高影响因子
RARE METALS
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2024
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IF 9.6
Chen Kun,Qin Yu-Rong,Liu Sheng-Qiu,Chen Rou-Ling
Iron overload has been evidenced to contribute to obesity-associated metabolic disorders, including insulin resistance. Strategies to reduce iron levels might help manage the metabolic complications associated with obesity. Here, it is demonstrated that the specific accumulation of oleic acid-modified polyoxovanadates (OPOVs) in adipose tissue leads to the reduction of iron concentrations in adipocytes in mice fed with a high-fat diet (HFD). Conjugation of oleic acids to polyoxovanadates enables tissue-specific depletion of iron from white adipose tissue (WAT) by OPOVs, protecting mice from HFD-induced obesity and obesity-associated metabolic deteriorations. Glucose tolerance and insulin sensitivity are improved in OPOV-treated mice, which demonstrates that the OPOV-induced iron depletion can reverse the metabolic degeneration caused by HFD-induced obesity. Furthermore, a decrease in expression of the marker genes of iron overload suggests the participation of OPOVs in maintaining iron homeostasis and a potential medical application of vanadium clusters in targeting the iron overload caused by obesity. These findings underscore the potential of vanadate-based clusters tailored to address the complex interplay between iron metabolism and metabolic health. Graphical abstract
研究领域:
药理学
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代谢
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肥胖研究
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营养学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2025
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IF 3.7
Xile Tian,Fancheng Meng,Xianglan Zhang,Yongchao Wang,Yahui Liu,Jian Zhang,Shuai Zhao,Desheng Chen,Lina Wang,Tao Qi
The high-acidity vanadium-containing solution contains high concentrations of iron and aluminum with pH around 0.5, the ketoxime extractant with the active ingredient of 2-hydroxy-5-nonylacetophenone oxime (HNAO, HL) was proposed to extract vanadium from the solution. Under the phase ratio (O/A) of 1:2, HNAO concentration of 0.542 mol·L −1 at 25 °C for 10 min, 99.06% of vanadium was extracted after a three-stage countercurrent extraction, while the extraction of impurities was less than 1%, with the separation coefficients of vanadium from iron and aluminum were 137050 and 43197, respectively. The antioxidant properties of the extractant were studied. At 25 °C, the extractant basically did not undergo oxidative degradation. Besides, about 91.2% of the loaded vanadium was effectively stripped using 2.5 mol·L −1 Na 2 CO 3 solution. The extraction mechanism of vanadium was investigated through the slope analysis method, the spectral characterizations and density functional theory calculations. It has been observed that VO 2 + substitutes the H atom on the phenolic hydroxyl and coordinates with the N atom on the oxime and the O atom on the phenolic hydroxyl to form of a six-membered ring, and the extraction complexes were determined to be VO 2 (H 2 O)L and VO 2 L.
研究领域:
化学工程
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冶金工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Qingqing He,Huayu Wang,Jie Bai,Yanxin Liao,Suna Wang,Lingyun Chen
Aqueous zinc ion batteries (AZIBs) and aqueous magnesium ion batteries (AMIBs) offer powerful alternatives for large-scale energy storage because of their high safety and low cost. Consequently, the design of high-performance cathode materials is essential. In this paper, we present a simple strategy that combines oxygen defect (O d ) engineering with a 2D-on-2D homogeneous nanopape-like bilayer V 2 O 5 nH 2 O xerogel (BL-HVO d NPS). This strategy employs O d to improve Zn 2+ /Mg 2+ insertion/extraction kinetics and reduce irreversible processes for high-performance AZIBs/AMIBs. And interlayer water molecules serve as an effective spacer to stabilize the expanded interlayer gap in BL-HVO d NPS, thereby providing extended diffusion channels for Zn 2+ /Mg 2+ during insertion/extraction. The interlayer water molecules help shield the electrostatic interaction between Zn 2+ /Mg 2+ and BL-HVO d NPS lattice, which improves diffusion kinetics during repeated. In addition, electrochemical characterization results indicate that the BL-HVO d NPS can effectively the surface adsorption and internal diffusion of Zn 2+ /Mg 2+ . More importantly, the successfully prepared unique 2D-on-2D homogenous nanopaper structure enhances electrolyte/electrode contact and reduces the migration/diffusion path of electrons/Zn 2+ and Mg 2+ , thus greatly improving rate performance. As a result, the BL-HVO d NPS as AZIBs/AMIBs electrodes offer better reversible capacity of 361.8 and 162.8 mA h g −1 (at 0.2 A g −1 ), while displaying impressively long cycle lifes. This method provides a way to prepare advanced xerogel cathode materials for AZIBs and AMIBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
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2024
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IF 8.9
Ying Gu,Xuwen Zheng,Zheng Zhou,Guangxin Chen,Shimou Chen,Qifang Li
Aqueous zinc ion batteries (AZIBs) are highly promising as large-scale energy storage devices with high capacity, safety, and low cost. However, the parasitic reaction on the of Zn anode and the growth of Zn dendrites greatly prevent the practical application of AZIBs. Here, we propose an effective strategy with hydrogel electrolytes by adding dual amphiphilic ionic liquids into acrylamide, allowing for the occurrence of the following phenomena related to the Zn anode: 1) Zn 2+ preferential adsorption by the amphiphilic ionic groups to regulate the electrodeposition behavior of Zn 2+ on the Zn(002) crystal surface and inhibit the growth of Zn dendrites; 2) water removal from the Zn 2+ solvation sheath, reducing water activity and inhibiting side reactions; 3) improved environmental adaptability of the hydrogel electrolyte through enhancing its mechanical properties and adhesion. The obtained hydrogel electrolyte has a high ionic conductivity of 41.47 mS/cm, a highly reversible Zn plating/stripping cycle of 1400 h in Zn||Zn symmetric batteries and an enhanced electrochemical performance in Zn||NVO full batteries (94 % capacity retention at 5.0 A g −1 /3000 cycles). Even under harsh conditions (10 mA cm −2 /10 mAh cm −2 ), these cells maintained excellent cycling stability. This study provides new ideas for the practical applications of AZIBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Lili Zhao,Haoyu Chen,Jiawei Zhou,Peipei Li,Wenying Zhao,Xiaohua Zhu,Youyu Zhang,Meiling Liu
A photoelectrochemical (PEC) sensing platform for the detection of alkaline phosphatase (ALP) and its inhibitor F– ions was developed based on the Ag2S/Bi2S3 composite. The signal variation strategy was triggered by the in situ formation and consumption of the electron donor. Ag2S quantum dots (QDs) on the Bi2S3 surface effectively suppress the recombination of photogenerated carriers, leading to an enhanced photocurrent response. After ALP is immobilized on the Ag2S/Bi2S3 surface, the in situ catalyzed hydrolysis of l-ascorbic acid 2-phosphate trisodium salt (AAP) appeared, resulting in the production of ascorbic acid (AA). AA acts as an electron donor, enhancing the photocurrent and offering a strategy for quantifying ALP activity. Sodium fluoride (NaF) induces a reduction in ALP activity, and by exposing the sensing platform to various concentrations of NaF, the inhibition of ALP can be identified. The developed PEC sensor demonstrates outstanding detection performance for NaF, featuring a linear concentration range from 100 pM to 20 μM and a low detection limit of 1.28 pM. The integration of Ag2S/Bi2S3 to the in situ formation of electron donors in PEC technology presents an innovative approach for detecting ALP activity and its inhibitors. This platform delivers enhanced sensitivity and selectivity, making it valuable for diverse applications in detecting enzyme activity and screening their inhibitors in biofluid and food samples.
研究领域:
生物化学
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分析化学
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医学检测
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2025
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IF 3.7
Biao Yuan,Fujin Sun,Pingting Chen,Kunpeng He,Pan Wu,Changjun Liu,Jian He,Wei Jiang
With the development of vanadium redox flow battery technology, the demand for pure vanadium is rapidly increasing. The separation of vanadium from vanadium–chromium leaching solutions are critical step in the production of purity-vanadium. This study presents an innovative adsorption process that utilizes amorphous ZrO 2 (AZrO) for the selective separation of V(V) and Cr(VI). In this process, a high adsorption capacity for V(V) at 64.5 mg·g –1 was achieved, while the capacity for Cr(VI) is relatively low at 24.1 mg·g –1 , demonstrating good separation performance. This is mainly caused by the large specific surface area and mesoporous structure, which are favorable for molecular diffusion and mass transfer. The kinetic analysis shows that the adsorption process follows pseudo-second-order kinetic process with chemisorption being the rate-controlling process. AZrO showed excellent separation performance in mixed solutions over a wide range of concentrations. After five cycles, AZrO retained over 73% of its capacity, indicating good stability. In mixed solutions containing up to 40 g·L –1 of V(V) and 3 g·L –1 of Cr(VI), the innovative adsorption process successfully achieved effective separation and purification. By an adsorption–desorption process using 0.1 mol·L –1 NaOH, a 99.02% V(V)-rich solution was obtained from a high concentration sodium vanadium slag leaching solution, demonstrating its effectiveness for practical industrial applications.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Huayi Tan,Bingqiang Fan,Shili Zheng,Hedong Zhang,Yang Zhang
Molybdenum (Mo) and vanadium (V) are both important strategic metals. Due to their similar physicochemical properties, it is always a challenge to realize their deep separation from a solution. However, based on the valence difference of Mo and V, this task can be achieved by the selective complexation precipitation of hexamethylenetetramine (HMT). In this study, through precipitation behavior studies in the single metal species solutions and the mixed species solutions of Mo and V in different chemical valence states, the complexation precipitation separation system of V and Mo was constructed. As a result, in the single metal species solution, the precipitation depths of Mo(V), Mo(VI) and V(V)) reached 96.83% 98.77% and 99% under the best conditions, respectively, while V(IV) remained in the solution. The results of the mixed-species complexation precipitation experiments revealed the most efficient selective separation scheme by HMT. Furthermore, combined with the characterization of the complexation precipitates of HMT with the single species of Mo(V), Mo(VI) and V(V), the mechanisms of the complexation reactions were elucidated. In particular, due to the different ion species of Mo caused by the different valence states, the complexation precipitation mechanisms of Mo(V) were different from those of Mo(VI). Finally, the differences in the mechanisms of Mo(V), Mo(VI) and V(V) complexation were also presented in their kinetics, and the reaction constants and activation energies were calculated by first-order kinetics. This study may provide further insight into the selective complexation separation of Mo and V.
研究领域:
化学工程
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材料科学
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产品关联
DOI
高影响因子
Journal of Energy Storage
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2024
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IF 8.9
Kanagaraj Rajalakshmi,Johnbosco Yesuraj,Selvaraj Muthusamy,N. Clament Sagaya Selvam,Yun Sik Nam,Kibum Kim,Yuanguo Xu
In recent times, transition-metal oxides have been recognized as highly promising candidates for supercapacitor applications. Nevertheless, their progress in diverse fields has been hindered by challenges such as poor electrical conductivity and a shortage of active reaction centers. Doping heteroatoms would overcome these drawbacks and enhance the supercapacitor properties in transition metal oxides. Herein, the phosphorous-doped 2D nanosheet assembled 3D Mn 2 V 2 O 7 micro flowers were grown on the Nickel foam using the hydrothermal method and successively phosphatized in a tube furnace, which was utilized as a binder-free supercapacitor electrode. The synthesis process involved varying the concentration of phosphorus (P), resulting in the successful formation of uniform P-decorated Mn 2 V 2 O 7 microflowers. The unique microflower structure and doping P into the Mn 2 V 2 O 7 material enhance the electrochemical properties with a specific capacity of 850C g −1 (1545 F g −1 ) at 1 A g −1 in a three-electrode cell. Moreover, the assembled Mn 2 V 2 O 7 –600/NF//AC device delivers a specific capacity of 258C g −1 (211 F g −1 ) at 1 A g −1 with a remarkable rate of 47 % at a high current density of 20 Ag −1 . The device achieved a maximum energy density of 43.2 Wh kg −1 at a power density of 604.7 W kg −1 , and it maintained 91 % of initial capacity after 10,000 charge/discharge cycles at 20 A g −1 . These results suggest that the P-doping 2D nanosheet assembled 3D Mn 2 V 2 O 7 could be promising electrode materials for supercapacitor applications.
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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产品关联
DOI
高影响因子
Engineering
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2025
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IF 11.6
Wenyue Yan,Baogang Zhang,Yi’na Li,Jianping Lu,Yangmei Fei,Shungui Zhou,Hailiang Dong,Fang Huang
Microbial vanadate (V(V)) reduction is a key process for environmental geochemistry and detoxification of vanadium (V). However, the electron transfer pathways and V isotope fractionation involved in this process are not yet fully understood. In this study, the V(V) reduction mechanisms with concomitant V isotope fractionation by the gram-positive bacterium Bacillus subtilis ( B. subtilis ) and the gram-negative bacterium Thauera humireducens ( T. humireducens ) were investigated. Both strains could effectively reduce V(V), and (90.5% ± 1.6%) and (93.0% ± 1.8%) of V(V) at an initial concentration of 50 mg·L −1 was removed over 10 d incubation, respectively. V(V) was bioreduced to insoluble vanadium (IV), which was distributed both inside and outside the cells. Electron transfer via cytochrome C, nicotinamide adenine dinucleotide, and glutathione played critical roles in V(V) reduction. Metabolomic analysis showed that differentially enriched metabolites (quinone, biotin, and riboflavin) mediated electron transfer in both strains. The aqueous V in the remaining solution became isotopically heavier as V(V) bioreduction proceeded. The obtained V isotope composition dynamics followed a Rayleigh fractionation model, and the isotope enrichment factor ( ε ) was (–0.54‰ ± 0.04‰) for B. subtilis and (–0.32‰ ± 0.03‰) for T. humireducens , with an insignificant difference. This study provides molecular insights into electron transfer for V(V) bioreduction and reveals V isotope fractionation during this bioprocess, which is helpful for understanding V biogeochemistry and developing novel strategies for V remediation.
研究领域:
环境微生物学
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地球化学
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生物化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Jianing Liu,Yi Huang,Ying Chen,Haobo Ke,Qian Deng,Hua Tang,Jinyan Yang,Shijun Ni
With industry development, water contaminated with vanadium(V) has attracted increasing attention. Various adsorbents have been used to remove V(V); however, reducing V(V) to V(III) or V(IV) with low solubility and toxicity remains a challenge. Herein, a novel layered double hydroxide loading with polyaniline composites (PANI-LDHs) adsorbent was prepared to facilitate V(V) detoxification and elimination. We examined the physicochemical characteristics and confirmed the successful formation of the composite. Some key experimental parameters were evaluated in detail for their potential impact on V(V) removal. The calculated maximum adsorption capacity was 222.22 mg/L with a dosage of only 0.3 g/L under 318 K, which was higher than other adsorbents. More importantly, about 80 % of the absorbed V(V) was reduced and detoxified by reductive nitrogen-containing groups in PANI. In addition, the PANI-LDHs can effectively resist the interference of various coexisting ions. The excellent V(V) removal performance is mainly attributed to the high stability of the inorganic skeleton (LDH) and the high chemical activity of PANI. Dynamics and thermodynamic analysis were also used to study the V(V) adsorption behavior. Finally, the mechanism study suggested that V(V) anions were adsorbed onto the surface of PANI-LDHs via electrostatic attraction or the H-bonding. The adsorbed V(V) was subsequently reduced and immobilized to V(IV) and V(III) oxides by nitrogen-containing groups in PANI, thus achieving the detoxification and removal of V(V). The combination of adsorption and detoxification properties, high adsorption capacity, and good selectivity make PANI-LDHs an ideal candidate for V(V)-containing wastewater treatment.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2025
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IF 6.1
Xiaopeng Hu,Sai Liu,Qing Liu,Yang Su,Junyao Wu,Zhihang Xie,Jinwei Guo,Wang Zhu
The service life of thermal barrier coatings (TBCs) in calcium magnesium aluminosilicate (CMAS) and molten salt environments has become a key factor in determining engine reliability and safety. The effect of interface roughness (bond coating surface roughness) on the CM (CMAS + molten salt (Na 2 SO 4 + NaCl + NaVO 3 )) corrosion resistance of electron beam physical vapor deposition (EB-PVD) TBCs is investigated. The addition of molten salts lowers the melting point of CM, leading to more severe destructive effects compared to single CMAS corrosion. Moreover, the 1200# specimen (Ra = 2.0 μm) exhibits the best resistance to CM corrosion. The adjustment of interface roughness significantly alters the microstructure of the top-ceramic coating and induces changes in crack patterns after CM corrosion. Therefore, appropriately reducing interface roughness is key to improving the isothermal CM corrosion resistance and high-temperature CM corrosion-induced thermal shock performance of TBCs.
研究领域:
材料科学
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腐蚀与防护
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）