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Polyphenol-mediated interfacial deposition strategy for supported manganese oxide catalysts with excellent pollutant degradation performance

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Chinese Chemical Letters 2024年第5期35卷 493-498页

作者： Dong Cheng Youyou Feng Bingxi Feng Ke Wang Guoxin Song Gen Wang xiaoli Cheng Yonghui Deng Jing wei The Key Laboratory of Biomedical Information Engineering of Ministry of Education State Key Lab of Transducer TechnologySchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersState Key Laboratory of Transducer TechnologyFudan UniversityShanghai 200433China Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China

In persulfate-based advanced oxidation process(PS-AOPs),fixing nanosized metal oxide on processable substrates is highly desirable to avoid the aggregation and loss of nanocatalysts during the practical ***,it is still challenging to develop a versatile strategy for the deposition of metal oxide nanocatalysts on various substrates with different physicochemical ***,polyphenols are utilized as a“molecular glue”and reductant to mediate the interfacial deposition of MnO_(2) nanocatalysts on different ***_(2) nanocatalysts were in-situ grown on macroscope mineral substrates(e.g.,airstone)via an interfacial redox strategy between tannic acid(TA)and oxidized KMnO4,and then employed as a fixed catalyst of peroxymonosulfate(PMS)activation for treating pharmaceutical and personal care products(PPCPs)in *** fixed MnO_(2) exhibited superior catalytic performance toward different PPCPS via a singlet oxygen(^(1)O_(2))-dominated nonradical oxidation *** in the secondary effluent of wastewater treatment plants could be effectively removed by a fixed-bed column of the fixed MnO_(2) with long term *** cycle of Mn^(4+)/Mn^(3+)and surface hydroxyl group of the fixed MnO_(2) was proved to be responsible for the activation of *** work provides a new avenue for developing fixed metal oxides for sustainable water treatment.

关键词： Redox strategy Manganese oxides Fixed catalyst Peroxymonosulfate PPCPs

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Strong metal–support interaction boosts the electrocatalytic hydrogen evolution capability of Ru nanoparticles supported on titanium nitride

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Carbon Energy 2024年第1期6卷 245-254页

作者： Xin Wang xiaoli Yang Guangxian Pei Jifa Yang Junzhe Liu Fengwang Zhao Fayi Jin wei Jiang Haoxi Ben Lixue Zhang College of Chemistry and Chemical Engineering Collaborative Innovation Center for Hydrogen Energy Key Materials and Technologies of Shandong ProvinceQingdao UniversityQingdaoShandongChina State Key Laboratory of Bio-fibers and Eco-Textiles Qingdao UniversityQingdaoShandongChina Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of ScienceQingdaoShandongChina

Ruthenium(Ru)has been regarded as one of the most promising alternatives to substitute Pt for catalyzing alkaline hydrogen evolution reaction(HER),owing to its inherent high activity and being the cheapest platinum-group ***,based on the idea of strong metal–support interaction(SMSI)regulation,Ru/TiN catalysts with different degrees of TiN overlayer over Ru nanoparticles were fabricated,which were applied to the alkaline electrolytic *** reveal that the TiN overlayer would gradually encapsulate the Ru nanoparticles and induce more electron transfer from Ru nanoparticles to TiN support by the Ru–N–Ti bond as the SMSI degree *** study shows that the exposed Ru–TiN interfaces greatly promote the H_(2) desorption ***,the Ru/TiN-300 with a moderate SMSI degree exhibits excellent HER performance,with an overpotential of 38 mV at 10 mA cm^(−2).Also,due to the encapsulation role of TiN overlayer on Ru nanoparticles,it displays super long-term stability with a very slight potential change after 24 *** study provides a deep insight into the influence of the SMSI effect between Ru and TiN on HER and offers a novel approach for preparing efficient and stable HER electrocatalysts through SMSI engineering.

关键词： electronic structure hydrogen evolution reaction ruthenium strong metal-support interaction titanium nitride

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Enhancing the Electrocatalytic Oxidation of 5-Hydroxymethylfurfural Through Cascade Structure Tuning for Highly Stable Biomass Upgrading

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Nano-Micro Letters 2024年第12期16卷 449-467页

作者： xiaoli Jiang Xianhui Ma Yuanteng Yang Yang Liu Yanxia Liu Lin Zhao Penglei Wang Yagang Zhang Yue Lin Yen wei School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731People’s Republic of China Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026People’s Republic of China The Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084People’s Republic of China School of Materials Science and Engineering North Minzu UniversityYinchuan 750021People’s Republic of China

Electrocatalytic 5-hydroxymethylfurfural oxidation reaction(HMFOR)provides a promising strategy to convert biomass derivative to highvalue-added ***,a cascade strategy is proposed to construct Pd-NiCo_(2)O_(4)electrocatalyst by Pd loading on Ni-doped Co3O4 and for highly active and stable synergistic HMF *** elevated current density of 800 mA cm^(-2)can be achieved at 1.5 V,and both Faradaic efficiency and yield of 2,5-furandicarboxylic acid remained close to 100%over 10 consecutive *** and theoretical results unveil that the introduction of Pd atoms can modulate the local electronic structure of Ni/Co,which not only balances the competitive adsorption of HMF and OH-species,but also promote the active Ni^(3+)species formation,inducing high indirect oxidation *** have also discovered that Ni incorporation facilitates the Co2+pre-oxidation and electrophilic OH*generation to contribute direct oxidation *** work provides a new approach to design advanced electrocatalyst for biomass upgrading.

关键词： 5-Hydroxymethylfurfural oxidation reaction Competitive adsorption Cascade strategy Elevated current density

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高固含量聚氨酯/有机硅复合分散体的微观形态及流变行为

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应用基础与工程科学学报 2013年第3期21卷 544-552页

作者：卫晓利张发兴四川理工学院材料与化学工程学院四川自贡643000

以含硅的二元醇(PES)和聚醚二醇(PPG)为软链段,TDI和复合亲水扩连剂1,2-二羟基-3-丙磺酸钠(DHPS)和二羟甲基丙酸(DMPA)为硬链段,以γ-氨丙基三乙氧基硅烷(KH-550)作为封端剂,采用自乳化法制备了一系列高固含量聚氨酯/有机硅复合分散体(H... 详细信息

以含硅的二元醇(PES)和聚醚二醇(PPG)为软链段,TDI和复合亲水扩连剂1,2-二羟基-3-丙磺酸钠(DHPS)和二羟甲基丙酸(DMPA)为硬链段,以γ-氨丙基三乙氧基硅烷(KH-550)作为封端剂,采用自乳化法制备了一系列高固含量聚氨酯/有机硅复合分散体(HSLV-Si/PU).分析了PES和PPG质量配比和KH-550含量(质量百分比)对分散体性能的影响.结果表明:所得分散体为假塑性流体,其粒径呈多元分布,乳胶粒子呈核壳结构.随着PES/PPG比值和KH-550含量的增大,乳胶粒平均粒径增大,粒度分布变宽,固含量则减小,当PES/PGG值为1/3,KH-550含量为1%,固含量高达55.2%.另外,和纯PU分散体相比,该分散体的稳定性略有下降,但仍可以满足要求.

关键词：高固含量聚氨酯分散体复合交联流变行为

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G protein-coupled receptor 35 attenuates nonalcoholic steatohepatitis by reprogramming cholesterol homeostasis in hepatocytes

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Acta Pharmaceutica Sinica B 2023年第3期13卷 1128-1144页

作者： xiaoli wei Fan Yin Miaomiao Wu Qianqian Xie Xueqin Zhao Cheng Zhu Ruiqian Xie Chongqing Chen Menghua Liu Xueying Wang Ruixue Ren Guijie Kang Chenwen Zhu Jingjing Cong Hua Wang Xuefu Wang Department of Oncology the First Affiliated Hospital of Anhui Medical UniversityHefei 230036China Department of Pharmacy Huainan First People's Hospitalthe First Affiliated Hospital of Anhui University of Science and TechnologyHuainan 232001China School of Pharmacy Anhui Medical UniversityHefei 230032China Inflammation and Immune Mediated Diseases Laboratory of Anhui Province Anhui Medical UniversityHefei 230032China

Nonalcoholic fatty liver disease(NAFLD)is the most common chronic liver disease *** accumulation“sensitizes”the liver to insult and leads to nonalcoholic steatohepatitis(NASH).G protein-coupled receptor 35(GPR35)is involved in metabolic stresses,but its role in NAFLD is *** report that hepatocyte GPR35 mitigates NASH by regulating hepatic cholesterol ***,we found that GPR35 overexpression in hepatocytes protected against high-fat/cholesterol/fructose(HFCF)diet-induced steatohepatitis,whereas loss of GPR35 had the opposite *** of the GPR35 agonist kynurenic acid(Kyna)suppressed HFCF diet-induced steatohepatitis in ***/GPR35 induced expression of StAR-related lipid transfer protein 4(STARD4)through the ERK1/2 signaling pathway,ultimately resulting in hepatic cholesterol esterification and bile acid synthesis(BAS).The overexpression of STARD4 increased the expression of the BAS rate-limiting enzymes cytochrome P450 family 7 subfamily A member 1(CYP7A1)and CYP8B1,promoting the conversion of cholesterol to bile *** protective effect induced by GPR35 overexpression in hepatocytes disappeared in hepatocyte STARD4-knockdown ***4 overexpression in hepatocytes reversed the aggravation of HFCF diet-induced steatohepatitis caused by the loss of GPR35 expression in hepatocytes in *** findings indicate that the GPR35–STARD4 axis is a promising therapeutic target for NAFLD.

关键词： G protein-coupled receptor 35 Kynurenic acid Steatohepatitis Cholesterol Bile acid STARD4 ACAT2 CYP7A1

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环烷烃催化裂解生成乙烯和丙烯反应探析

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石油学报（石油加工） 2013年第3期29卷 475-481页

作者：于珊张久顺魏晓丽中国石化石油化工科学研究院北京100083

采用小型固定流化床装置研究了不同环烷烃催化裂解生成乙烯和丙烯的反应规律。结果表明,环烷烃的催化裂解反应中,无取代基的双环环烷烃比单环环烷烃更有利于生成乙烯和丙烯,但两者容易发生脱氢缩合反应;给电子诱导效应相对最强的正丙基... 详细信息

采用小型固定流化床装置研究了不同环烷烃催化裂解生成乙烯和丙烯的反应规律。结果表明,环烷烃的催化裂解反应中,无取代基的双环环烷烃比单环环烷烃更有利于生成乙烯和丙烯,但两者容易发生脱氢缩合反应;给电子诱导效应相对最强的正丙基环己烷比甲基环己烷和乙基环己烷更易生成正碳离子,利于生成乙烯和丙烯;对于含有2个取代基的环烷烃,取代基之间的距离越近,环烷烃环上的电子分布越不均匀,越容易生成正碳离子;具有较大环张力和较小动力学直径的甲基环戊烷比甲基环己烷更易催化裂解生成乙烯和丙烯。根据甲基环戊烷催化裂解的产物分析和分子模拟计算结果,推测H+优先进攻甲基环戊烷取代基的碳原子,进而发生电荷转移,形成C(1)五配位正碳离子。

关键词：环烷烃催化裂解乙烯丙烯机理

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植物种子际微生物研究进展

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世界林业研究 2021年第3期34卷 13-18页

作者：葛萌韦小丽贵州大学林学院贵阳550025

很多林木种子存在难萌发、天然更新不良的现象,而种子际是直接影响种子萌发的土壤区域,种子际微生物会对天然更新的植物产生有益或有害的影响,并对解释根际微生物群落的建立具有重要的意义。文中主要从种子际微生物多样性、对种子和幼... 详细信息

很多林木种子存在难萌发、天然更新不良的现象,而种子际是直接影响种子萌发的土壤区域,种子际微生物会对天然更新的植物产生有益或有害的影响,并对解释根际微生物群落的建立具有重要的意义。文中主要从种子际微生物多样性、对种子和幼苗生长发育的影响、种子际微生物群落变化的影响因素以及种子际微生物的自身调节行为等4方面来概述种子际微生物研究现状,分析种子际微生物研究中存在的问题,提出未来林木种子际微生物的研究展望,旨在为林木种子建立共生萌发机制及为濒危物种野生居群的生态恢复提供参考。

关键词：林木种子种子际微生物微生物群落微生物多样性共生萌发自身调节

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Composition， Distribution and Constraint Factors of Fe Isotope(δFe) in the Surface Soils of the Tibetan Plateau

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Journal of Earth Science 2024年

作者： Ting wei Zhiwen Dong Eric Parteli xiaoli Liu Shichang Kang Yaping Shao State Key Laboratory of Cryosphere Sciences， Northwest Institute of Eco-Environment and Resources， Chinese Academy of Sciences Hubei Key Laboratory of Regional Ecology and Environmental Change， School of Geography and Information Engineering， China University of Geosciences Faculty of Physics， University of Duisburg-Essen Institute for Geophysics and Meteorology， University of Cologne

Iron isotopes， represented by δ56Fe， serve as valuable tools for constraining the surface iron processes and as potent tracers for studying the biogeochemical cycle of iron. Nevertheless， our comprehension of iron isotopes in the land surface processes of the Tibetan Plateau （TP） remains limited. In this study， we present the results of iron isotopic composition (δ56Fe) in the surface soils of the TP， encompassing both glacial and non-glacial regions characterized by rugged and flat topographies. Our findings reveal that soil δ56Fe values ranged from -0.01±0.05‰ to 0.14±0.01‰， with the highest values observed in eastern locations （0.14‰） and the lowest appeared in the northeast （-0.1‰）. On a global scale， the δ56Fe values observed in Tibetan soils exhibited relatively small variability compared to reservoirs marked by significant iron isotope fractionation. By contrast， the range of TP soils measured here was slightly larger than that of the Chinese Loess. Furthermore， we discerned noticeable spatial variations in δ56Fe across the large-scale region of TP， indicating a gradual increase trend from the northeast to the south and from the west to the east. These regional disparities in δ56Fe likely arise from a combination of constraining factors， including differences in mineralogy， lithological variations， organic matter content， and variations in chemical weathering intensity. This study is pivotal in advancing our understanding of land surface iron isotope δ56Fe dynamics and its role in the biogeochemical cycle within the TP region.

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胃癌免疫治疗的进展

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中华胃肠外科杂志 2016年第2期19卷 225-232页

作者：魏小丽徐瑞华中山大学肿瘤防治中心肿瘤内科中山大学附属肿瘤医院华南肿瘤学国家重点实验室肿瘤医学协同创新中心广州510060

胃癌是发病率及病死率极高的恶性肿瘤，化疗及靶向治疗等晚期胃癌的治疗方案非常有限。免疫治疗是抗肿瘤治疗的新生力量。目前研发的药物主要靶向CTLA-4及PD-1 /PD-L通路，Ipilimumab（全人源化的抗CTLA-4抗体）、Pembrolizumab（全人... 详细信息

胃癌是发病率及病死率极高的恶性肿瘤，化疗及靶向治疗等晚期胃癌的治疗方案非常有限。免疫治疗是抗肿瘤治疗的新生力量。目前研发的药物主要靶向CTLA-4及PD-1 /PD-L通路，Ipilimumab（全人源化的抗CTLA-4抗体）、Pembrolizumab（全人源化的抗PD-1抗体）和Nivolumab（全人源化的抗PD-1抗体）等数种药物已顺利通过临床试验，并被FDA批准用于黑色素瘤和非小细胞肺癌的治疗。多项临床试验正在验证这些药物在包括晚期胃癌在内的各种晚期实体瘤中的疗效。针对晚期胃癌或胃食管结合部腺癌的临床试验（KEYNOTE-012）发现，对于PD-L1阳性的晚期胃癌患者，抗PD-1治疗初步看来是一种安全有效的选择。此外，多项针对过继性细胞治疗和肿瘤疫苗治疗胃癌的临床试验也正在进行中。本文将对晚期胃癌免疫治疗方面的最新进展进行综述。

关键词：胃肿瘤免疫治疗免疫检查点

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含磺酸根和羧酸根的高固含率聚氨酯分散体稳定性的研究

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石油化工 2012年第2期41卷 194-198页

作者：卫晓利张发兴四川理工学院材料与化学工程学院四川自贡643000

以聚醚多元醇为软段、甲苯二异氰酸酯为硬段、1,2-二羟基-3-丙磺酸钠(DHPS)和2,2-二羟甲基丙酸(DMPA)为复合亲水扩链剂,合成了聚氨酯(PU)分散体;采用FTIR方法对PU分散体的结构进行了表征;考察了PU分散体的pH稳定性、耐电解质性能、耐高... 详细信息

以聚醚多元醇为软段、甲苯二异氰酸酯为硬段、1,2-二羟基-3-丙磺酸钠(DHPS)和2,2-二羟甲基丙酸(DMPA)为复合亲水扩链剂,合成了聚氨酯(PU)分散体;采用FTIR方法对PU分散体的结构进行了表征;考察了PU分散体的pH稳定性、耐电解质性能、耐高温性、抗冻融性及储存稳定性。实验结果表明,PU分散体的耐电解质性能随反应体系中m(DHPS)∶m(DMPA)的增大而下降;当反应体系中0.4≤m(DHPS)∶m(DMPA)≤0.6时,合成的PU分散体的固含率大于70%(w),PU分散体在pH=5～10的条件下能稳定存在,80℃时稳定性好,室温下放置6个月以上无明显的分层,经4次冻结-融化后产生凝胶。PU分散体具有较好的pH稳定性、耐高温性、抗冻融性及储存稳定性。

关键词：聚醚多元醇甲苯二异氰酸酯聚氨酯分散体

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