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Differentially-grown cobalt regulators cooperatively involved in the tandem catalysis for high-yield production of second amines

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Nano Research 2024年第4期17卷 2444-2450页

作者： Jinhui Xu Xiao Wang Ying Wang Fei Wang lingling zhang Wenjie Cui Shuyan Song Hongjie zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Department of Chemistry Tsinghua UniversityBeijing 100084China

One-pot tandem catalysis has been regarded as one of the most atomic economic ways to produce secondary amines,the important platform molecules for chemical synthesis and pharmaceutical manufacture,but it is facing serious issues in overall *** promotional effects are highly desired for boosting the activity and regulating the selectivity of conventional tandem *** this work,we report a high-performance tandem catalyst with maximized synergistic effect among each counterpart by preciously manipulating the spatial structure,which involves the active CeO_(2)/Pt component as kernel,the densely-coated N-doped C(NC)layer as selectivity controller,and the differentially-grown Co species as catalytic performance *** comprehensive investigations,the unique growth mechanism and the promotion effect of Co regulators are ***,the surface-landed Co clusters(Cocs)are crucial to selectivity by altering the adsorption configuration of benzylideneaniline ***,the inner Co particles(Cops)are essential for activity by denoting their electrons to neighboring *** from the unique promotion effect,a remarkably-improved catalytic efficiency(100%nitrobenzene conversion with 94%N-benzylaniline selectivity)is achieved at a relatively low temperature of 80℃,which is much better than that of CeO_(2)/Pt(100%nitrobenzene conversion with 12%N-benzylaniline selectivity)and CeO_(2)/Pt/NC(35%nitrobenzene conversion with 94%benzylideneaniline selectivity).

关键词： tandem catalysis CeO_(2) hierarchical structure heterogeneous catalyst dual-site materials

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S1-supported Pd@CeO_(2) quasi-core@shell materials as advanced catalysts for selective hydrogenation of furfural

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Chinese Chemical Letters 2024年第3期35卷 493-496页

作者： Xiang Chu lingling zhang Ke Wang Rui zhang Xiao Wang Shuyan Song Hongjie zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China

Bare Pd metal nanoparticles invariably suffer from poor selectivity in furfural hydrogenation by forming flat configurations,with the aromatic ring of the substrate molecules parallel to the metal ***,we put forward a promising solution by using CeO_(2)as promoters to modify Pd nanoparticles for modulating the adsorption behaviors of furfural *** achieve the highly-desired ultra-small Pd@CeO_(2)core@shell nanostructure,a“constrained auto-redox”synthesis is developed,in which silicalite-1 supports play the key role of providing their surface as the landing place of PdO_(x)precursors for inhibiting the overgrowth and the *** the best of our knowledge,this is one of the smallest core@shell materials obtained from aqueous *** evaluated as catalysts,Pd@CeO_(2)/S-1 gives 98.9%conversion of furfural with 94.3%selectivity for furfural alcohol in 15 h,which is much better than that of Pd/S-1(88.6%conversion with 44.3%selectively).The DFT simulation reveals a strong interaction between the defects of CeO_(2)and the oxygen atom of the–CHO group in furfural molecules,which benefits the selective hydrogenation occurred in the–CHO group rather than the furan ring.

关键词： Core@shell Palladium Ceria Auto-redox synthesis Hydrogenation

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High-efficiency PdNi single-atom alloy catalyst toward cross-coupling reaction

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Chinese Chemical Letters 2024年第7期35卷 480-483页

作者： Baokang Geng Xiang Chu Li Liu lingling zhang Shuaishuai zhang Xiao Wang Shuyan Song Hongjie zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Department of Chemistry Tsinghua UniversityBeijing 100084China

The preparation of Pd-based catalysts with rich electrons and a high atom dispersion rate is of great significance for improving the reactivity of cross-coupling reactions,which is a powerful tool for pharmaceutical and fine chemical ***,we report a PdNi single-atom alloy(SAA)catalyst in which isolated Pd single atoms are anchored onto the surface of Ni nanoparticles(NPs)applied for Suzuki coupling reactions and Heck coupling *** 0.1%PdNi SAA exhibits extraordinary catalytic activity(reaction rate:17,032.25 mmol h^(-1)gPd^(-1))toward the Suzuki cross-coupling reaction between 4-bromoanisole and phenylboronic acid at 80℃for 1 *** excellent activity is supposed to attribute to the 100 percent utilization rate of Pd atoms and the highly stable surface zero-valance Pd atoms,which provides abundant sites and electrons for the adsorption and fracture of the C-X(X=Cl,Br,I)***,our work demonstrates the excellent application prospect of SAAs for cross-coupling reactions.

关键词： Single-atom alloy Cross-coupling reaction Palladium catalysis Heterogeneous catalysis High-efficiency

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Synthesis of Core-shell ZSM-5@ Ordered Mesoporous Silica by Tetradecylamine Surfactant

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 332-336页

作者：马扩彦 ZHAO Pengxian YI Hongyu 俞海军 ZHOU Moxi zhang lingling LIU Yupu Chongqing Key laboratory of Scientific Utilization of Tobacco Resource Chongqing 400060China Department of Chemistry Laboratory of Advanced MaterialsFudan UniversityShanghai 200433China

A core-shell composite consisting of ZSM-5 zeolite as the core and ordered mesoporous silica as the shell was prepared by a surfactant-controlled sol-gel process and using tetradecylamine(TDA) as the template and Tetraethylorthosilicate(TEOS) as the silica *** pores of the silica shell were found to be ordered and perpendicular to the crystal faces of the zeolite *** thickness of the shell in the coreshell structured composite can be adjusted in the range of 20-90 nm,while the surface morphology and the pore size distribution were modified by changing the mass ratio of TEOS to *** composite molecular sieves have higher surface area for capturing molecules than ZSM-5,and with the increase of mesoporous shell layer,the ZSM-5@SiO_(2)-x composites show stronger adsorption capacity of ***,when the shell thickness exceeds 90 nm,the adsorption capacity of butyraldehyde decreases *** composites have a huge potential for environmental applications.

关键词： core-shell composite tetradecylamine surfactant adsorption

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Spherical cationic polymer networks with porphyrin photosensitizer for sustainable and efficient photocatalysis

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Nano Research 2024年第5期17卷 3934-3941页

作者： lingling zhang Liwei Wu Junhui Bao Longhui Li Zejun Liu Feng Bai Jie Ju Xi Yao Key Laboratory for Special Functional Materials of Ministry of Education School of Materials Science and EngineeringHenan UniversityKaifeng 475004China Department of Chemistry City University of Hong KongKowloonHong Kong 999077China

The continuous and sustainable photo-activity on micro-or nano-carriers has always been a key stepping stone in the industrialization of photo-catalysis,photo-synthesis,and ***,we report a new series of positively charged hollow microspheres carrying porphyrin *** hollow spheres are formed through crosslinking of well-ordered porous thin laminates,initiated by co-assembly of regular monomers and those decorated with porphyrin *** the surface of an individual sphere,densely distributed positive sites attract anionic *** superficial porphyrin decomposes the accumulated reactants under 1 *** degradation and release of products,the photoactive sites are thereby *** demonstrate that polymer network(1:10)exhibited superior sustainable photocatalytic performance with complete degradation of methyl orange(MO)in 40 min with no observable performance deterioration after six *** established close loop of adsorption-reaction-release cycle makes possible many efficient and continuous photo-catalytic processes.

关键词： hydrogen bonding assembly porphyrin sustainable photo-activity anionic pollutant

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Research Progress on the Pathogenesis of Primary Enuresis in Children

Expert Review of Chinese Medical

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Expert Review of Chinese Medical 2024年第1期2卷 1-5页

作者： Yiyi Hou lingling zhang Hubei University of Arts and Sciences School of Basic Medicine

Nocturnal enuresis(NE)is a common disease in children,commonly known as *** International Children's Continence Society(ICCS)defines intermittent urinary incontinence during nighttime sleep in children aged 5 and above as *** can be divided into two types:primary nocturnal enuresis(PNE)and secondary nocturnal enuresis(SNE).PNE refers to nocturnal urinary control ability that has never been achieved for more than 6 months in children aged 5 and above with enuresis;SNE refers to the recurrence of enuresis symptoms after a period of more than 6 months of continuous nocturnal urinary control *** is relatively rare in clinical practice and is often caused by sudden stress events or other diseases such as *** pathogenesis and treatment are different from *** is a multifactorial disease related to genetics,and its pathogenesis is not fully *** are not many research and review articles on its *** recent years,there has been significant progress in the epidemiology and pathogenesis of *** following is a summary.

关键词： children enuresis research progress

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Migration and Spatiotemporal Land Cover Change: A Case of Bosomtwe Lake Basin, Ghana

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Advances in Remote Sensing 2024年第1期13卷 18-40页

作者： Richard Kwabena Adams lingling zhang Zongzhi Wang School of Public Administration Hohai University Nanjing China National Key Laboratory of Water Disaster Prevention Nanjing Institute of Hydraulic Research Nanjing China

Internal migration is highly valued due to its increasingly acknowledged potential for social and economic development. However, despite its significant contribution to the development of towns and cities, it has led to the deterioration of many ecosystems globally. Lake Bosomtwe, a natural Lake in Ghana and one of the six major meteoritic lakes in the world is affected by land cover changes caused by the rising effects of migration, population expansion, and urbanization, owing to the development of tourist facilities on the lakeshore. This study investigated land cover change trajectories using a post-classification comparison approach and identified the factors influencing alteration in the Lake Bosomtwe Basin. Using Landsat imagery, an integrated approach of remote sensing, geographical information systems (GIS), and statistical analysis was successfully employed to analyze the land cover change of the basin. The findings show that over the 17 years, the basin’s forest cover decreased significantly by 16.02%, indicating that population expansion significantly affects changes in land cover. Ultimately, this study will raise the awareness of stakeholders, decision-makers, policy-makers, government, and non-governmental agencies to evaluate land use development patterns, optimize land use structures, and provide a reference for the formulation of sustainable development policies to promote the sustainable development of the ecological environment.

关键词： Land Cover Change Supervised Classification Migration Landsat Imagery Environmental Sustainability

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The Chinese Consumers’Service Quality Satisfaction Differences of Cruise Tourism and Precision Marketing Strategy

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Journal of Tourism and Hospitality Management 2024年第1期12卷 1-11页

作者： zhang lingling CHEN Yu GUO Yingzhi Putian University PutianChina Fudan University ShanghaiChina

The paper selected Chinese Cruise Line as the case study. Having based on the survey data of Chinese cruise tourism consumers, the factor analysis method, one-way analysis of variances method, cluster analysis method, and other quantitative and qualitative methods were taken to analyze Chinese consumers’ satisfaction differences of cruise tourism service quality with different segmentation markets and clusters markets, and the reasons of satisfaction differences were also explored. Then precision marketing strategy of Chinese cruise tourism with different segmentation markets and clusters markets from the supply-side reform perspective was discussed. The purpose of current research was to provide suggestions of precision management and precision marketing of Chinese cruise tourism for relevant enterprises and government departments.

关键词： cruise tourism service quality satisfaction market segmentation precision marketing

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Intestinal monocarboxylate transporter 1 mediates lactate transport in the gut and regulates metabolic homeostasis of mouse in a sex-dimorphic pattern

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Life Metabolism 2024年第1期3卷 21-36页

作者： Shuo Wang lingling zhang Jingyu Zhao Meijuan Bai Yijun Lin Qianqian Chu Jue Gong Ju Qiu Yan Chen CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China CAS Key Laboratory of Tissue Microenvironment and Tumor Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China

The monocarboxylate transporter 1(MCT1),encoded by gene Slc16a1,is a proton-coupled transporter for lactate and other monocar***1-mediated lactate transport was recently found to regulate various biological ***,how MCT1 and lactate in the intestine modulate the physiology and pathophysiology of the body is *** this study,we generated a mouse model with specific deletion of Slc16a1 in the intestinal epithelium(Slc16a1IKO mice)and investigated the functions of MCT1 in the *** fed a high-fat diet,Slc16a1IKO male mice had improvement in glucose tolerance and insulin sensitivity,while Slc16a1IKO female mice only had increased *** of intestinal MCT1 in male mice was associated with downregulation of pro-inflammatory pathways,together with decreased circulating levels of inflammatory cytokines including tumor necrosis factor alpha(TNFα)and C-C motif chemokine ligand 2(CCL2).Lactate had a stimulatory effect on pro-inflammatory macrophages in *** number of intestinal macrophages was reduced in Slc16a1IKO male mice in *** deletion of Slc16a1 in male mice reduced interstitial lactate level in the *** addition,treatment of male mice with estrogen lowered interstitial lactate level in the intestine and abolished the difference in glucose homeostasis between Slc16a1IKO and wild-type *** of intestinal MCT1 also blocked the transport of lactate and short-chain fatty acids from the intestine to the portal *** effect of Slc16a1 deletion on glucose homeostasis in male mice was partly mediated by alterations in gut *** conclusion,our work reveals that intestinal MCT1 regulates glucose homeostasis in a sex-dependent manner.

关键词： MCT1 intestine lactate short-chain fatty acids insulin resistance obesity

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保障性大型社区发展类型与差异——基于人口密度和POI实时数据

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城市规划 2024年第8期48卷 44-54页

作者：张玲玲王嘉莉徐俊丽苏州大学建筑学院苏州大学苏州市建筑与城市环境重点实验室苏州大学社区人居环境研究所

研究通过城市多源数据手段获取全国范围内五大城市保障性大型社区的人口密度与POI密度数据，探讨当前社区发展之间类型特征和差异，探寻利用大数据方法监测保障性大型社区发展状况的可行途径。数据结果显示：保障性大型社区的人口增长... 详细信息

研究通过城市多源数据手段获取全国范围内五大城市保障性大型社区的人口密度与POI密度数据，探讨当前社区发展之间类型特征和差异，探寻利用大数据方法监测保障性大型社区发展状况的可行途径。数据结果显示：保障性大型社区的人口增长与人口结构变化之间遵循着一定的规律；人口增长整体在放缓，负增长社区在增多；社区发展目前可以划分为三类，类型与城市归属之间有一定关联，各类型社区建成环境之间存在着差异。

关键词：保障性大型社区社区发展人口密度 POI密度

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