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Four New Terpyridine Complexes Based Polyoxometalates with[W_(10)O_(32)]^(4-) Anions as high-Efficiency Dual-Site Catalysis for Thioether Oxidation Reaction

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Chinese Journal of Chemistry 2024年第6期42卷 592-598页

作者： Yin Zhang Wei-dong Yu Fang-Qian Wang Xiangnan Wang Jiawan Zhou Chao Liu Jun Yan Junior Education Department Changsha Normal UniversityChangshaHunan410100 China School of Science Hunan University of Technology and BusinessChangshaHunan410000 China College of Chemistry and Chemical Engineering Central South UniversityChangshaHunan410000 China

Polyoxometalates modified with complex cations have attracted increasing attention because of the fascinating properties and the controllable *** adjusting the synthesis conditions,four new terpyridine complexes based hybrid POMs,[(TPY-h)CuCl]_(4)[W_(10)O_(32)]·2DMF·2h_(2)O(1),[(TPY-h)Cu(DMSO)(h_(2)O)]_(2)[W_(10)O_(32)]·2h_(2)O(2),[(TPY-h)_(2)Cu]_(2)[W_(10)O_(32)]·6DMSO·8h_(2)O(3) and[(TPY-Br)CuCl(DMSO)(h_(2)O)]_(2)[(TPY-Br)CuCl]_(2)[W_(10)O_(32)]·2DMSO·4h_(2)O(4),were prepared by using‘one-pot’***-crystal X-ray diffraction analyses,infrared radiation,etc.,revealed the structural composition of compounds 1—4,which.indicates that synthesis conditions have a directional regulatory effect on the compounds *** oxidation catalytic reactions show 1—4 have good catalytic activities,and powder X-ray diffraction and thermogravimetry analysis show 1—4 have superduper catalytic ***,4 has better catalytic activity because of the different structure of terpyridine ***,a possible mechanism of dual-site catalysis by both cations and anions is proposed.

关键词： Polyoxometalates Terpyridine complexes Thioether oxidation Dual-site catalysis Clusters

Magnesium doping to improve the light to heat conversion of OMS-2 for formaldehyde oxidation under visible light irradiation

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Chinese Chemical Letters 2024年第4期35卷 193-198页

作者： Tingting Liu Pengfei Sun Wei Zhao Yingsh.ang Li Lujun Cheng Jiah.i Fan Xiaoh.i Bi Xiaoping dong College of Chemistry and Chemical Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China College of Environmental Science and Engineering Nankai UniversityTianjin 300071China hangzhou Kaiming Catalyst Co. Ltd.Hangzhou 310013China

Mg-doped manganese oxide octahedral molecular sieve(Mg-OMS-2)catalysts were prepared by hydrothermal *** photothermal degradation performance of these catalysts for formaldehyde(hChO)in batch system and continuous system was *** light absorption of OMS-2 was increased by Mg-doped,especially for near infrared light,which promoted surface temperature reach a maximum of 214.8℃ under xenon *** this temperature,the reinforced surface lattice oxygen and oxygen vacancy that formed by lattice distortion via Mg-doped were *** best hChO elimination efficiency was achieved over Mg_(0.2)/OMS-2 catalyst with Mg^(2+)/Mn^(2+)=1/5,which could reduce hChO from 250 ppm to 10 ppm within 20 *** in situ DRiFTS was also carried out to monitor the changes in the content of reaction intermediates and analyze the degradation paths of *** was found the hChO was attacked by formed·Oh and·O^(2-) to generate formate species and carbonate species,and finally transformed to CO_(2) and h_(2)*** photothermal catalytic oxidation process exhibited a high efficiency purification of hChO without the help of extra energy consumption.

关键词： Mg doping Photothermal catalysis OMS-2 hChO Reaction mechanism

The extraction of effective components and an antioxidant activity study of Tulipa edulis

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Food Science and human Wellness 2024年第1期13卷 276-286页

作者： Doudou Zhang dong Xiao Tingting Yin Sh.angzhi Zhao Olena Zhur Xun Xiao h.ilun he Leilei Chen Beijing Advanced innovation Center for Food Nutrition and human health Beijing Technology and Business UniversityBeijing 102488China School of Life Sciences Central South UniversityChangsha 410013China State Key Laboratory of Coal Resources and Safe Mining University of Mining and TechnologyXuzhou 221116China institute of Agro-Food Science and Technology Shandong Academy of Agricultural SciencesJinan 250100China

Plant extracts from natural sources are an excellent ch.ice for food additives and natural *** this study,the active components of Tulipa edulis were extracted and analysed,and th.ir antioxidant capacity was ***,the crude extract mixture was separated and purified using a Sephadex Lh-20 gel,and the antioxidant activity of the purified products was *** umbilical vein endothelial human umbilical vein endothelial cells(hUVEC)cells were treated with 35 mmol/L glucose to construct a model of oxidative ***,the cells were treated with the active component to observe whether the products of *** could have a good protective effect on hUVEC cells induced by *** analysis was also performed on hUVEC cells after same treatment to explore the possible mechanism of the component F2 protecting hUVEC cells from oxidative stress induced by high *** results showed that component F2 obtained from *** has strong antioxidant ***,F2 can play a strong antioxidant protective role in hUVEC ***,the gene expression of heme oxygenase 1(hO-1),γ-glutamyl cysteine ligase catalytic subunit(GCLC)and NAD(P)h quinone oxidoreductase-1(NQO1)in hUVEC cells was up-regulated after treated with *** study provides reference value for the further development and application of *** and the d evelopment of functional food.

关键词： Tulipa edulis Oxidative stress Purification Antioxidant

2D Ca/Nb-based perovskite oxide with Ta doping as highly efficient h_(2)O_(2)synthesis catalyst

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Nano Research 2024年第6期17卷 4934-4942页

作者： Xingchen Yang Yang Gao Xiaoh.i Xu Wenqiang Xu Dengh.i Wang Bin Luo dong Liu Tao Liang Bin Wang CAS Key Laboratory of Nanosystem and hierarchical Fabrication National Center for Nanoscience and TechnologyBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnologythe University of QueenslandSt LuciaQLD 4072Australia State Key Laboratory of Organic–inorganic Composites College of Chemical EngineeringCollege of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China hangzhou institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China State Key Lab of Silicon Materials Zhejiang UniversityHangzhou 310027China

Perovskite oxides(POs)are emerging as a class of highly efficient catalysts for reducing oxygen to h_(2)*** a rich variety of POs-based catalysts have been developed by tuning the complex composition,a highly efficient PO catalyst that is able to alter the reaction pathway from a 4e−process to a 2e−process for h_(2)O_(2)production has rarely been *** modified the structure and composition of a Ca-and Nb-based PO material by realizing a uniform two-dimensional(2D)morphology and varied Ta doping,resulting in the 2D Ca_(2)Nb_(3−x)Ta_(x)O_(10)−(x=0,0.5,1,and 1.5)monolayer *** obtained catalysts exhibit a dominant 2e−pathway and show exceptional h_(2)O_(2)production *** typical Ca_(2)Nb_(2.5)Ta_(0.5)O_(10)−nanoflakes showed an onset potential of 0.735 V *** hydrogen electrode(RhE),a remarkably high selectivity over 95%across a wide range of 0.3-0.7 V,an impressively high Faradaic efficiency of 94%,and a notable h_(2)O_(2)productivity of 1571 mmol·gcat^(−1)·h^(−1).These findings high.ight the great potential of 2D perovskite oxide nanoflakes as advanced electrocatalysts for 2e−oxygen reduction reaction.

关键词： perovskite oxide h_(2)O_(2) two-electron oxygen reduction reaction catalyst Ca_(2)Nb_(3-x)Ta_(x)O_(10)-nanoflakes

A review of electrospun separators for lithium-based batteries: Progress and application prospects

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Carbon Energy 2024年第9期6卷 109-155页

作者： Xiangru Sun Ying Zhou Dejun Li Kai Zhao Liqun Wang Peiran Tan hongyang dong Yueming Wang Ji Liang College of Chemistry Tianjin Normal UniversityTianjinChina Tianjin international Joint Research Centre of Surface Technology for Energy Storage Materials College of Physics and Materials ScienceTianjin Normal UniversityTianjinChina Power Battery and System Research Center Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina Dagong Equipment Manufacturing(Tianjin)Co.Ltd. TianjinChina Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education School of Materials Science and EngineeringTianjin UniversityTianjinChina

Due to the limitations of the raw materials and processes involved,polyolefin separators used in commercial lithium-ion batteries(LiBs)have gradually failed to meet the increasing requirements of high-end batteries in terms of energy density,power density,and ***,it is very important to develop next-generation separators for advanced lithium(Li)-based recharge-able batteries including LiBs and Li-S *** nanofiber membranes fabricated via electrospinning technology are highly attractive candidates for high-end separators due to th.ir simple processes,low-cost equipment,controllable microporous structure,wide material applicability,and availability of multiple *** this review,the electrospinning technologies for separators are reviewed in terms of devices,process and environment,and polymer solution ***,strategies toward the improvement of electrospun separators in advanced LiBs and Li-S batteries are presented in terms of the compositions and the structure of nanofibers and ***,the challenges and prospects of electrospun separators in both academia and industry are *** anticipate that these systematic discussions can provide information in terms of commercial applications of electrospun separators and offer new perspectives for the design of functional electrospun separators for advanced Li-based batteries.

关键词： electrospinning Li-metal batteries Li-S batteries lithium-ion batteries separator

Optimizing the sulfur-resistance and activity of perovskite oxygen carrier for chemical looping dry reforming of methane

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Journal of Energy Chemistry 2024年第9期96卷 259-271页

作者： Yuelun Li dong Tian Lei jiang h.icong Zuo LiNan h.ang Mingyi Chen Jianchun Zuo hua Wang Kongzh.i Li Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction Ministry of EducationKunming University of Science and TechnologyKunming 650093YunnanChina Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093YunnanChina

Perovskite oxides has been attracted much attention as high-performance oxygen carriers for chemical looping reforming of methane,but they are easily inactivated by the presence of trace h_(2)***,we propose to modulate both the activity and resistance to sulfur poisoning by dual substitution of Mo and Ni ions with the Fe-sites of LaFeO_(3)*** is found that partial substitution of Ni for Fe substantially improves the activity of LaFeO_(3)perovskite,while Ni particles prefer to grow and react with h_(2)S during the long-term successive redox process,resulting in the deactivation of oxygen *** the presence of Mo in LaNi_(0.05)Fe_(0.95)O_(3−σ)perovskite,h_(2)S preferentially reacts with Mo to generate MoS_(2),and then the CO_(2)oxidation can regenerate Mo via removing *** addition,Mo can inhibit the accumulation and growth of Ni,which helps to improve the redox stability of oxygen *** LaNi_(0.05)Mo_(0.07)Fe_(0.88)O_(3−σ)oxygen carrier exhibits stable and excellent performance,with the Ch_(4)conversion higher than 90%during the 50 redox cycles in the presence of 50 ppm h_(2)S at 800℃.This work high.ights a synergistic effect in the perovskite oxides induced by dual substitution of different cations for the development of high-performance oxygen carriers with excellent sulfur tolerance.

关键词： Perovskite oxygen carriers Chemical looping reforming Sulfur-resistance Dual substitution Syngas

Nano polystyrene microplastics could accumulate in Nile tilapia(Oreochromis niloticus):Negatively impacts on the intestinal and liver health through water exposure

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Journal of Environmental Sciences 2024年第3期137卷 604-614页

作者： Di Wu Xing Lu Li-Xue dong Juan Tian Jin Deng Lei Wei hua Wen Shan Zhong Ming Jiang School of Basic Medical Sciences Wuhan UniversityWuhan 430071China Key Laboratory of Freshwater Biodiversity Conservation Ministry of Agriculture and Rural AffairsYangtze River Fisheries Research InstituteChinese Academy of Fishery SciencesWuhan 430223China hubei Province Key Laboratory of Allergy and immunology Wuhan 430071China

Microplastics(MPs)have become a significant concern for th.ir potential ***,the correlation between the size of plastic particles and th.ir toxicity remains ***,we investigate the toxic effects of different sizes(80 nm,800 nm,8μm and 80μm)polystyrene MPs(PS-MPs)on the model organism Nile tilapia(Oreochromis niloticus).The results of bioluminescent imaging indicate that the 80 nm PS-MPs are more likely to invade the body.h&E staining shows severe damage on the intestinal villi and distinct hepatic steatosis in the 80 nm *** U labeling shows that the proliferation activity of intestinal and liver cells reduces significantly in the 80 nm *** gut microbiome analysis shows a severe imbalance of gut microbiota homeostasis in the 80 nm *** analysis of liver transcriptomics and metabolomics shows that the liver lipid metabolism is disordered in the 80 nm *** conclusion,this study confirms that the 80 nm PS-MPs are more likely to induce intestinal and liver *** the above lay the foundation for further study on the pathological damage of MPs to other organisms.

关键词： Microplastics(MPs) intestinal toxicity Liver toxicity Gut microbiome Lipid metabolism

NaBh4-induced phase transition of CoSe_(2) with abundant Se deficiency for acidic oxygen reduction to hydrogen peroxide

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Rare Metals 2024年第2期43卷 500-510页

作者： Cai-Di han Yong-Chao Zhang Qian Zhang Jin-Ting Wu Jian Gao Ji-Jun Zou Xiao-dong Zhu State Key Laboratory Base of Eco-Chemical Engineering College of Chemical Engineering Qingdao University of Science and TechnologyQingdao266042China Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China

Electrocatalytic oxygen reduction(ORR)via the 2e−pathway to form h_(2)O_(2) in acidic medium has attracted extensive ***,the low activity,insufficient selectivity and high cost of catalysts have been the ***,CoSe_(2) with abundant Se deficiency was synthesized by a simple hydrothermal method,and the addition of NaBh4-induced CoSe_(2) phase transition from orthorhombic to cubic phase with more Se *** cubic phase CoSe_(2) with abundant Se deficiency can effectively regulate the surface electronic structure with suitable binding energies of*OOh and*O,which shows high activity,selectivity and long-term stability for acidic ORR to h_(2)O_(2).The onset potential is as low as 0.73 V *** hydrogen electrode(RhE),the h_(2)O_(2) selectivity is 84%(0 V ***),and the average electron transfer number is about ***,the h_(2)O_(2) yield measured using a flow cell is as high as 115.92 mmol·gcat.^(−1)·h^(−1) and the Faradaic efficiency is 70%at 0 V ***,which presents high potential in electrocatalytic acidic ORR to h_(2)O_(2) and organic pollutant degradation using the electron-Fenton process.

关键词： Se defected CoSe_(2) Crystal phase transition Electrocatalysis Acidic oxygen reduction hydrogen peroxide

Machine learning for carbonate formation drilling: Mud loss prediction using seismic attributes and mud loss records

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Petroleum Science 2024年第2期21卷 1241-1256页

作者： h.i-Wen Pang han-Qing Wang Yi-Tian Xiao Yan Jin Yun-hu Lu Yong-dong Fan Zhen Nie National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing102249China College of Science China University of Petroleum-BeijingBeijing102249China Petroleum Exploration and Production Research.institute SINOPECBeijing102206China College of Petroleum Engineering China University of Petroleum-BeijingBeijing102249China Research.institute of Petroleum Exploration and Development CNPCBeijing100083China

Due to the complexity and variability of carbonate formation leakage zones, lost circulation prediction and control is one of the major challenges of carbonate drilling. it raises well-control risks and production expenses. This research utilizes the h oilfield as an example, employs seismic features to analyze mud loss prediction, and produces a complete set of pre-drilling mud loss prediction solutions. Firstly, 16seismic attributes are calculated based on the post-stack seismic data, and the mud loss rate per unit footage is specified. The sample set is constructed by extracting each attribute from the seismic trace surrounding 15 typical wells, with a ratio of 8:2 between the training set and the test set. With the calibration results for mud loss rate per unit footage, the nonlinear mapping relationship between seismic attributes and mud loss rate per unit size is established using the mixed density network ***, the influence of the number of sub-Gausses and the uncertainty coefficient on the model's prediction is evaluated. Finally, the model is used in conjunction with downhole drilling conditions to assess the risk of mud loss in various layers and along the wellbore trajectory. The study demonstrates that the mean relative errors of the model for training data and test data are 6.9% and 7.5%, respectively, and that R2is 90% and 88%, respectively, for training data and test data. The accuracy and efficacy of mud loss prediction may be greatly enhanced by combining 16 seismic attributes with the mud loss rate per unit footage and applying machine learning methods. The mud loss prediction model based on the MDN model can not only predict the mud loss rate but also objectively evaluate the prediction based on the quality of the data and the model.

关键词： Lost circulation Risk prediction Machine learning Seismic attributes Mud loss records