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Oxidative esterification of 1, 2-propanediol to methyl lactate over Au/CuxAlOy catalysts in methanol without the presence of a base

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REACTION KINETICS MECHANISMS AND CATALYSIS 2025年第2期138卷 947-965页

作者： Fang, Weiguo Xie, Xiaohu Li, Guixian Fan, Yingying Tian, Junying Zhang, Dongqiang Lanzhou Univ Technol Sch Petrochem Engn Lanzhou 730050 Gansu Peoples R China Key Lab Low Carbon Energy & Chem Engn Gansu Prov Lanzhou 730050 Peoples R China

A series of Au catalysts supported on different CuAl composite oxide supports were designed for the oxidative esterification of 1,2-propanediol to methyl lactate in an alkali-free methanol system. A conversion of 52.8% and a methyl lactate selectivity of 67.0% were obtained over the optimized Au/Cu1.5AlO3 catalyst under the conditions of 140 degrees C and 1.0 MPa O2. The Au in the catalyst was revealed to be pivotal, providing the essential active sites necessary for the oxidative esterification of 1,2-propanediol. Moreover, the inclusion of Cu in the CuAl composite oxide support was discovered to markedly enhance the catalytic performance of the Au catalysts. The synergistic interaction between Au and Cu is posited to alter the electronic and geometric properties of the gold sites, thereby enhancing the catalyst's ability to oxidize the primary hydroxyl group of 1,2-propanediol. This strategic modification of the Au sites by Cu is instrumental in improving the selectivity for methyl lactate during the oxidative esterification process.

关键词： 1,2-propanediol Methyl lactate Oxidative esterification Au catalyst

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Fish Scale-Inspired β-Cyclodextrin Cross-Linked Polyacrylamide Hydrogels for Oil-Water Separation

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ACS APPLIED MATERIALS & INTERFACES 2025年第11期17卷 17389-17397页

作者： Zhang, Qi Chen, Wenjing Zuo, Jiajun Liu, Guanglei Han, Xiaoqian Wang, Nong Lanzhou Jiaotong Univ Sch Chem & Chem Engn Lanzhou 730070 Peoples R China

Cyclodextrins (CDs), a low-polysaccharide class, possess a hydrophilic outer surface due to their hydroxyl groups, which can be functionalized for various applications. In this study, the hydroxyl groups on beta-cyclodextrin were functionalized with acrylates (CD-A) and were subsequently used as a cross-linker in the copolymerization with acrylamide to form a polyacrylamide-cyclodextrin hydrogel (PAC). Compared with polyacrylamide (PAM), PAC exhibited enhanced water absorption abilities and mechanical strength. Inspired by fish scales' surface structural properties, microporous stainless steel meshes were coated with PAC, and we could demonstrate an excellent oil-water separation due to excellent superhydrophilicity and underwater superoleophobicity. The mesh effectively separated various oil-water mixtures by using gravity filtration, achieving separation efficiencies of over 99%. Repeated use with different oil types confirmed the durability and effectiveness of the hydrogel-coated mesh for practical applications in oil-water separation.

关键词： beta-cyclodextrin hydrogel-coated mesh specific wettability underwater superoleophobic water-oil separation

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Investigating the interfacial interactions in CoSe2@CNTs for improved sodium storage performance

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NEW JOURNAL OF CHEMISTRY 2025年第17期49卷 7151-7163页

作者： Liu, Chao Jiang, Yanyan Wei, Yuan Gao, Yuhui Zhang, Yulan Wang, Tiantian Shi, Gaofeng Wang, Guoying Lanzhou Univ Technol Coll Petrochem Engn Lanzhou Peoples R China Key Lab Low Carbon Energy & Chem Engn Gansu Prov Lanzhou Peoples R China Hexi Univ Zhangye Peoples R China

The most effective method of resolving the issue of inadequate conductivity and significant volume expansion of the converted sodium storage anode material is to hybridize/combine the electroactive material with a conductive carbon material to form a carbonaceous nanocomposite material. Herein, a one-step solvothermal method was employed to construct a cobalt diselenide@carbon nanotube (CoSe2@CNTs) composite with a heterojunction structure. The incorporation of CNTs not only enhances the overall conductivity of the composite but also effectively mitigates the expansion of CoSe2 during charging and discharging, providing structural support to the material. Moreover, the electronic coupling effect between the distinct elements at the interface between CoSe2 and CNTs optimizes the electronic structure and charge distribution of the composite, establishing a built-in electric field within the composite and enhancing the rapid transport of sodium ions. X-ray photoelectron spectroscopy (XPS) tests and density functional theory (DFT) calculations further substantiate these findings. Among all the prepared samples, the optimized CoSe2@CNTs-2 electrode demonstrates outstanding sodium storage properties, characterized by ultrahigh long-term cycling stability (345.8 mA h g-1 at 2 A g-1 after 1750 cycles). Finally, the Na3V2(PO4)3@C//CoSe2@CNTs-2 full battery was investigated, retaining a reversible capacity of 164.2 mA h g-1 after 100 cycles at 0.1 A g-1. This finding provides important theoretical support for the optimization and design of conversion anode materials for sodium storage.

关键词： X ray photoelectron spectroscopy

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Contribution of Osmotic Suction to Suction Stress for Unsaturated Saline Clay and Its Suction Stress Characteristic Curve

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JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 2025年第1期151卷

作者： Wang, Liye Zhou, Fengxi He, Mingyang Liu, Hongbo Ningxia Univ Sch Civil & Hydraul Engn Yinchuan 750021 Ningxia Peoples R China Lanzhou Univ Technol Sch Civil Engn Lanzhou 730050 Gansu Peoples R China Southeast Univ Sch Civil Engn Nanjing 211189 Jiangsu Peoples R China

The presence of water and salt transport in complex hydrochemical environments allows for continuous changes in the suction state of clay (matric suction, osmotic suction, and their interactions). The interaction between salt solution and negatively charged clay matrix alters the interparticle physicochemical forces, which makes the conventional suction stress theory for unsaturated soils not able to well characterize the local interparticle forces in unsaturated saline clays. For this reason, the relationship between osmotic pressure and osmotic suction of clay when the pores contain a general salt solution is first revealed from the concept of soil-water potential for the problem of macroscopic description of physicochemical forces in unsaturated saline clay. Subsequently, the suction stress formula for unsaturated saline clay is presented with the help of the mechanical analysis. The suction stress of unsaturated saline clay is divided into matric suction stress and osmotic suction stress, and its suction stress characteristic curve (SSCC) is analyzed. Finally, the extended suction stress theory is verified by utilizing the test results of the soil-water characteristic curve (SWCC) and shear tests for the four types of clays. The results indicate that the osmotic pressure of clay is affected by the clay's type, osmotic suction, and stress level, so it is key to accurately consider the relationship between osmotic pressure and osmotic suction to describe the osmotic effect of saline clay. The presence of osmotic effects not only generates osmotic suction stress in clay but may also alter its matric suction stress, and the sum of these two components yields the total suction stress in unsaturated saline clays. From the verification, it is noted that the extended suction stress theory can effectively characterize the SSCC of unsaturated saline clay by solely increasing the surface fractal dimension. Additionally, this work provides a theoretical basis for explaining

关键词： Unsaturated clay Salt solution Suction stress Osmosis Characteristic curve

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Vasectomy and prostate cancer risk: a pooled of cohort studies and Mendelian randomization analysis

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BMC CANCER 2025年第1期25卷 1-11页

作者： Wang, Li Chen, Si-yu Wan, Shun Li, Kun-peng Li, Xiao-ran Yang, Li Second Hosp Lanzhou Univ Dept Urol Lanzhou Peoples R China Gansu Prov Clin Res Ctr Urol Lanzhou Peoples R China

Background: The relationship between vasectomy and the risk of prostate cancer (PCa) remains unclear, with observational studies reporting inconsistent results. To clarify this ambiguity, we embarked on a comprehensive investigation comprising both a meta-analysis and a Mendelian randomization (MR) study. This dual approach aimed to thoroughly examine not only the association but also the causality between undergoing a vasectomy and the subsequent risk of PCa. Methods: Our systematic review meticulously examined cohort studies published until January 2024, employing a random effects model for the computation of relative risks (RR) and their 95% confidence intervals (CI). For MR Analysis, we leveraged aggregated data from the IEU Open GWAS database, investigating the correlation between genetic predisposition to vasectomy and PCa. We chose single nucleotide polymorphisms (SNPs) of European descent as instrumental variables (IVs) for this analysis. The primary method for calculating the odds ratios (ORs) and their 95% CIs was inverse variance weighting (IVW). Through sensitivity analysis, we confirmed the robustness of our findings. Results: Our investigation synthesized data from 19 cohort studies, encompassing over four million participants. The combined analysis revealed a statistically significant link between vasectomy and an elevated risk of PCa across any grade (RR = 1.09;95%CI: 1.05-1.14;P = 0.001;I-2 = 83.3%). This association was observed for both localized PCa (RR = 1.08;95% CI: 1.04-1.13;P < 0.001;I-2 = 48.8%) and advanced PCa (RR = 1.07;95% CI: 1.01-1.13;P = 0.016;I-2 = 0%). Nonetheless, the discovery cohort MR Analysis indicated no genetic causal link between vasectomy and PCa (OR = 0.067;95%CI = 0.002-1.535;P = 0.09). A validation set in the Finnish population confirmed the robustness of the results. This conclusion remained consistent even after controlling for variables such as prostate-specific antigen (PSA) testing and body mass index (BMI), suggest

关键词： Vasectomy Prostate cancer Mendelian randomization Risk Cohort

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Volatile organic compounds from Stenotrophomonas geniculata J-0 as potential biofumigants manage bulb rot caused by Fusarium oxysporum in postharvest Lanzhou lily

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WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY 2025年第1期41卷 1-17页

作者： Ling, Lijun Yue, Rui Wang, Yuanyuan Feng, Lijun Yang, Ling Li, Yao Mo, Rongxiu Zhang, Wenyue Kong, Fanjin Jiang, Yijuan Zhou, Yongpeng Northwest Normal Univ Coll Life Sci 967 Anning East Rd Lanzhou 730070 Peoples R China Northwest Normal Univ Bioact Prod Engn Res Ctr Gansu Distinct Plants Lanzhou 730070 Peoples R China Lanzhou Jiaotong Univ Sch Biol & Pharmaceut Engn Lanzhou 730070 Peoples R China Lanzhou Vocat & Tech Coll Coll Hlth Lanzhou 730070 Peoples R China

The Lanzhou lily bulbs are often vulnerable to postharvest infections by pathogenic fungi, leading to lily bulb rot. This study investigated the ability of volatile organic compounds (VOCs) produced by Stenotrophomonas geniculata J-0 to control the highly pathogenic fungus Fusarium oxysporum BH-7 in postharvest Lanzhou lily bulbs. VOCs of S. geniculata J-0 showed inhibitory effect on the mycelial growth of F. oxysporum BH-7, with a maximum inhibition of 100%. Scanning electron microscope (SEM) observed that VOCs caused a shift in mycelial morphology from elongated and uniform tubular to collapsed and wrinkled. Moreover, VOCs of J-0 significantly reduced pathogenic fungal spore germination and sporulation. Through headspace gas chromatography-ion mobility spectrometry analysis, J-0 emitted 15 volatile compounds. The fumigation test of BH-7 with single pure synthetic compounds showed that 1-penten-3-one had excellent antifungal activity, with an inhibition rate of 100% at 4 mu L/L. Additionally, our results revealed 1-penten-3-one destroyed the integrity and increased the permeability of BH-7 mycelial cell membranes, leading to leakage of intracellular electrolytes and substances, a reduction in extracellular pH, a blockage of ergosterol synthesis and an elevation in malondialdehyde content. In vivo experiments, fumigation of 1-penten-3-one at an exceptionally low concentration (4 mu L/L) for a very short period of time (0.5 h) was effective in delaying the onset and prevalence of postharvest diseases. Hence, this study provides novel antifungal agents to control disease in postharvest Lanzhou lily and enhances our understanding of the biocontrol potential of volatiles from S. geniculata.

关键词： Volatile organic compounds 1-penten-3-one Stenotrophomonas geniculata Fusarium oxysporum Lanzhou lily bulbs Postharvest diseases

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Study on the synergistic enhancement of photocatalytic degradation of carbendazim by Co-doped BiOBr induced spin polarization and OVs

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NEW JOURNAL OF CHEMISTRY 2025年第10期49卷 4007-4020页

作者： Wang, Hongyu Wei, Yuan Liu, Chao Li, Jiaxian Li, Xin Yang, Yang Wang, Tiantian Zhang, Yulan Jiang, Yanyan Shi, Gaofeng Wang, Guoying Lanzhou Univ Technol Coll Petrochem Technol Lanzhou 730050 Peoples R China Lanzhou Petrochem Univ Vocat Technol Sch Petrochem Engn Lanzhou 730060 Gansu Peoples R China Hexi Univ Zhangye 734000 Peoples R China

Bismuth bromide oxide (BiOBr) has been widely used in water purification areas due to its unique layered structure, suitable bandgap value and excellent photocatalytic performance. In this work, a Co doped BiOBr (Co-BiOBr) photocatalyst was successfully synthesized using the solvothermal method, and the photocatalytic performance of Co-BiOBr was studied by photocatalytic degradation and mineralization of pesticide carbendazim (CBZ). The effects of the Co doping amount, Co-BiOBr dosage, concentration and pH of pesticide CBZ aqueous solution and common inorganic anions on the photocatalytic degradation performance of CBZ were deeply studied. The results showed that 5% Co-BiOBr exhibited an excellent photocatalytic performance under conditions of xenon lamp (350-780 nm) irradiation when the pH is 7 and the concentration of the CBZ pesticide aqueous solution is 10 mg L-1. After 90 minutes of photocatalytic degradation, the degradation efficiency and TOC removal efficiency of CBZ reached 92.1% and 88.1%, respectively. Additionally, the degradation efficiency of CBZ reached 82.1% even after being reused 4 times. The crystal structure of 5% Co-BiOBr remained almost unchanged after reuse, indicating excellent photocatalytic performance and stable structure. Meanwhile, through free radical capture experiments and ESR analysis, it was demonstrated that h+, (center dot)O2- and 1O2 free radicals played an extremely important role in the photocatalytic degradation of CBZ pesticides with 5% Co-BiOBr. Finally, based on the DFT calculation results and combined with the analysis of the catalyst's morphology, specific surface area, optical properties, and active free radicals, the mechanism of enhanced photocatalytic performance of 5% Co-BiOBr was revealed.

关键词： Spin polarization

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Rapid and controllable microwave synthesis of nickel cobalt sulfide electrodes for high-performance asymmetric supercapacitors

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FUNCTIONAL MATERIALS LETTERS 2025年第2期18卷

作者： Zhao, Guanghong Liu, Chao Wei, Yuan Gao, Yuhui Liu, Yubing Liu, Ronghui Jiang, Yanyan Zhang, Yulan Shi, Gaofeng Wang, Guoying Lanzhou Univ Technol Coll Petrochem Engn Lanzhou 730050 Peoples R China

The efficient and controllable synthesis method of high-performance energy storage electrode materials is crucial for advancing the development of energy storage technologies. Herein, by leveraging microwave heating technology in the sulfidation of nickel cobalt MOF, we effectively enhanced the efficiency of the synthesis process. Notably, sulfidation time emerged as a pivotal factor in tuning the crystalline phase structure and conductive properties of the material, leading to the successful development of NCS2 electrode material with a unique structure through optimized sulfidation conditions. Electrochemical performance tests of the NCS2 material revealed exceptional results;it exhibited a specific capacity of 1311 Fg-1 at a current density of 1 Ag-1 and retained 73.4% of its initial capacity when the current density increased to 10 Ag-1, demonstrating outstanding rate performance. The composite NCS2//AC supercapacitor exhibits an energy density of 24.2 Whkg-1 at power density of 800 Wkg-1, even though after 1000 consecutive charge-discharge cycles, the capacity retention rate remained high at 77.1%, validating the exceptional stability and reliability of the NCS2 material during cycling. This work employs microwave sulfidation for the rapid and controlled synthesis of nickel cobalt sulfides, providing a green and efficient synthetic strategy for metal sulfide active materials.

关键词： Nickel cobalt sulfide microwave supercapacitors

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A cross-tissue transcriptome-wide association study identifies new susceptibility genes for benign prostatic hyperplasia

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SCIENTIFIC REPORTS 2025年第1期15卷 1-11页

作者： Wang, Li Chen, Si-yu Yang, Jian-wei Wang, Kang-yu Li, Kun-peng Wan, Shun Li, Xiao-ran Yang, Li Lanzhou Univ Hosp 2 Dept Urol Lanzhou 730030 Peoples R China Lanzhou Univ Clin Med Sch Lanzhou 730030 Peoples R China Lanzhou Univ Hosp 2 Cuiying Biomed Res Ctr Lanzhou Peoples R China

Benign prostatic hyperplasia (BPH) is a prevalent urinary system disorder. Despite evidence of a significant genetic component from previous studies, the specific pathogenic genes and biological mechanisms are still largely unknown. The study utilized the FinnGen R10 dataset, encompassing 177,901 individuals (36,601 cases and 141,300 controls), and the GTEx v8 EQTLs files to conduct single-tissue and cross-tissue transcriptome-wide association studies (TWAS). FUSION method was utilized to validate the findings in specific tissues. Gene Analysis and Multi-marker Analysis of Genomic Annotation (MAGMA) were used to identify potential susceptibility genes. The intersection genes of the above results were analyzed by Mendelian randomization (MR), summary data-based MR (SMR) and colocalization studies. Fine-mapping of causal gene sets (FOCUS) software was employed to accurately locate risk genes. Gene Expression Omnibus (GEO) analysis explores the differential expression of genes. Finally, The GeneMANIA tool was utilized to further understand the functional roles of these susceptibility genes. The cross-tissue TWAS analysis revealed 28 genes associated with BPH susceptibility. Single-tissue TWAS and MAGMA further refined eight genes, and subsequent MR, SMR, FOCUS and colocalization analysis pinpointed INO80B as the key gene. The differential expression of this result was verified by GEO. INO80B may help prevent excessive prostatic cell proliferation by regulating cell cycle-related gene expression. Our research identified the INO80B gene, whose predicted expression is associated with BPH risk and hence provided a new insight into the genetic basis of this disease. However, further functional studies are necessary to elucidate the potential biological activity of these significant signals.

关键词： BPH TWAS UTMOST Gene Mendelian randomization

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Adsorption of Ni(II) from Aqueous Solution by Wheat Straw Modified with Mercaptopropionyl Functional Groups

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LANGMUIR 2025年第8期41卷 5488-5503页

作者： Guo, Yaling Wang, Gang Zhu, Xiaoyan Sun, Yongpeng Dai, Liang Lanzhou Jiaotong Univ Sch Environm & Municipal Engn Lanzhou 730070 Gansu Peoples R China

Mercaptopropionyl wheat straw (MPWS) was prepared as an adsorbent by modifying wheat straw with mercaptopropionyl groups, and the ability of MPWS for the removal of Ni(II) from aqueous solution was examined. The removal of Ni(II) by using MPWS was identified through investigating the impacts of MPWS dosage, adsorption temperature, and adsorption time. Different models for the adsorption isotherm and kinetics were utilized to fit the experimental results and elucidate the mechanism of MPWS for Ni(II). Environmental interference factors, including initial Ni(II) concentration, pH value, inorganic matters, and organic matters in wastewater, were examined to evaluate the antienvironmental disturbance capability of MPWS during Ni(II) adsorption. A removal rate of Ni(II) as high as 99.02% was achieved at pH 6.0 with an adsorption temperature of 30 degrees C and a contact time of 100 min. The experimental results exhibited excellent alignment with both pseudo-second-order kinetic model, Freundlich isothermal model, Redlich-Peterson model, and Hill model. Furthermore, coexisting substances in the environment could inhibit the adsorption process of Ni(II) by MPWS;however, this inhibition could be mitigated or eliminated by increasing the amount of absorbent MPWS. Overall, MPWS displays remarkable resistance against environmental interference during its application for removing Ni(II) from wastewater.

关键词： Straw

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