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Design strategies of highly selective nickel catalysts for H2 production via hydrous hydrazine decomposition: a review

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National Science Review 2018年第3期5卷 356-364页

作者： Lei He Binglian liang Yanqiang Huang tao Zhang State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

Hydrazine, a widely used liquid propellant, has the potential to be employed as a hydrogen source in certain instances and has therefore attracted considerable attention; consequently, the complete decomposition of hydrazine with 100% Hselectivity under mild conditions has become the current research focus for catalyst design. In this review, the strategies for the design of efficient catalysts are summarized for complete hydrazine decomposition. The first part of this review introduces the mechanism of hydrazine decomposition, while the second part illustrates the key factors influencing the Hselectivity of nickel catalysts, including the effects of alloying, alkali promoter addition and strong metal–support interactions.Finally, the critical elements of catalyst design employed in industrial applications are analyzed.

关键词： hydrazine selectivity H2 catalyst nickel

Remote interfacing between superconducting qubits and Rydberg-atom qubits via thermal coupled cavities

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Science China(Physics,Mechanics & Astronomy) 2022年第4期65卷 3-9页

作者： Zhen-Tao Liang Guo-Qing Zhang Jianhao Yuan Qinzhou Ye Kaiyu Liao Zheng-Yuan Xue Hui Yan Shi-liang Zhu Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Frontier Research Institute for PhysicsSouth China Normal UniversityGuangzhou 510006China GPETR Center for Quantum Precision Measurement South China Normal UniversityGuangzhou 510006China

We propose a built-in fault-tolerant geometric operation to realize fast remote entanglement between superconducting qubits anchored to a 15 m K plate and Rydberg-atom qubits trapped near a 1 K plate via thermal coupled cavities. We show that this operation is robust against the detrimental effects of the thermal mode states and fluctuations in the control parameters. The operation can generate a high-fidelity entanglement between superconducting and atomic qubits under realistic experimental parameters, comparable to the results of the existing methods using auxiliary cooling systems. The scheme proposed here will promote the development of quantum network and distributed superconducting quantum computation.

关键词： interfacing thermal-photon resistance geometric operation hybrid quantum network

Self-Healing,Self-Adhesive and Stable Organohydrogel-Based Stretchable Oxygen Sensor with High Performance at Room Temperature

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Nano-Micro Letters 2022年第3期14卷 257-275页

作者： Yuning liang Zixuan Wu Yaoming Wei Qiongling Ding Meital Zilberman Kai tao Xi Xie Jin Wu State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information TechnologySun Yat-Sen UniversityGuangzhou 510275People’s Republic of China Department of Biomedical Engineering Faculty of EngineeringTel Aviv University69978 Tel AvivIsrael Ministry of Education Key Laboratory of Micro and Nano Systems for Aerospace Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

With the advent of the 5G era and the rise of the Internet of Things,various sensors have received unprecedented attention,especially wearable and stretchable sensors in the healthcare field.Here,a stretchable,self-healable,self-adhesive,and room-temperature oxygen sensor with excellent repeatability,a full concentration detection range(0-100%),low theoretical limit of detection(5.7 ppm),high sensitivity(0.2%/ppm),good linearity,excellent temperature,and humidity tolerances is fabricated by using polyacrylamide-chitosan(PAM-CS)double network(DN)organohydrogel as a novel transducing material.The PAM-CS DN organohydrogel is transformed from the PAM-CS composite hydrogel using a facile soaking and solvent replacement strategy.Compared with the pristine hydrogel,the DN organohydrogel displays greatly enhanced mechanical strength,moisture retention,freezing resistance,and sensitivity to oxygen.Notably,applying the tensile strain improves both the sensitivity and response speed of the organohydrogel-based oxygen sensor.Furthermore,the response to the same concentration of oxygen before and after self-healing is basically the same.Importantly,we propose an electrochemical reaction mechanism to explain the positive current shift of the oxygen sensor and corroborate this sensing mechanism through rationally designed experiments.The organohydrogel oxygen sensor is used to monitor human respiration in real-time,verifying the feasibility of its practical application.This work provides ideas for fabricating more stretchable,self-healable,self-adhesive,and high-performance gas sensors using ion-conducting organohydrogels.

关键词： Stretchable oxygen sensors Organohydrogel Self-healing Self-adhesive Electrochemical reaction

Linking the electron donation capacity to the molecular composition of soil dissolved organic matter from the Three Gorges Reservoir areas,China

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Journal of Environmental Sciences 2020年第4期32卷 146-156页

作者： tao Jiang Joeri Kaal Jiang Liu Jian liang Yaoling Zhang Dingyong Wang State Cultivation Base of Eco-agriculture for Southwest Mountainous Land College of Resources and EnvironmentSouthwest UniversityChongqing 400716China Department of Forest Ecology and Management Swedish University of Agricultural SciencesUmeaSE-90183Sweden Institut für Geookologie Abt.UmweltgeochemieTechnische Universitat Braunschweighanger Kamp 19c38106BraunschweigGermany Centre for Earth Observation Science Department of Environment and GeographyUniversity of ManitobaWinnipegMBR3丁2N2Canada College of Chemistry and Environmental Engineering Baise UniversityGuangxi533000China Qinghai Institute of Salt Lakes Chinese Academy of SciencesXining 810008China

Soil dissolved organic matter(DOM)plays an essential role in the Three Gorges Reservoir(TGR)as a linkage between terrestrial and aquatic systems.In particular,the reducing capacities of soil DOM influence the geochemistry of contaminants such as mercury(Hg).However,few studies have investigated the molecular information of soil DOM and its relationship with relevant geochemic al reactivities,including redox properties.We collected samples from eight sites in the TGR areas and studied the link between the molecular characteristics of DOM and their electron donation capacities(EDCs)toward Hg(II).The average kinetic rate and EDC of soil DOM in TGR areas were(0.004±0.001)hr-1 and(2.88±1.39)nmol e-/mg DOMbulk,respectively.Results suggest that higher EDCs and relatively rapid kinetics were related to the greater electron donating components of ligninderived and perhaps pyrogenic DOM,which are the aromatic constituents that influenced the reducing capacities of DOM in the present study.Molecular details revealed that even the typical autochthonous markers are important for the EDCs of DOM as well,in contrast to what is generally assumed.More studies identifying specific DOM molecular components involved in the abiotic reduction of Hg(II)are required to further understand the relations between DOM sources and their redox roles in the environmental fate of contaminants.

关键词： Soil dissolved organic matter Reducing capacity Three Gorges Reservoir Pyrolysis Natural organic matter Mercury

Reaction characteristics investigation of CeO_(2)-enhanced CaSO_(4) oxygen carrier with lignite

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Chinese Journal of Chemical Engineering 2022年第2期35卷 319-328页

作者： Baowen Wang Zhongyuan Cai Heyu Li Yanchen liang tao Jiang Ning Ding Haibo Zhao Research Institute for Coal Clean and Efficient Utilization College of Electric PowerNorth China University of Water Resources and Electric PowerZhengzhou 450045China Hebei Ji-Yan Energy Science and Technology Research Institute Shijiazhuang 050000China State Key Laboratory of Coal Combustion Huazhong University of Science and TechnologyWuhan 430074China

Calcium sulfate(CaSO_(4))has been verified as a promising oxygen carrier(OC)in the chemical looping combustion(CLC)for its high oxygen capacity,abundant reserve and low cost,but its low reactivity and deleterious sulfur species emission from the side reactions of CaSO_(4) should be well considered for its wide application in CLC.In order to promote the reactivity of CaSO_(4) and increase its potential to inhibit the gaseous sulfur emission,a CeO_(2)-enhanced CaSO_(4) OC mixed OC of core–shell structure was prepared using the combined template synthesis method.Reaction characteristics of the prepared CaSO_(4)-CeO_(2) mixed OC with a typical lignite was first conducted and systematically investigated,and an improved reactivity of the prepared CaSO_(4)-CeO_(2) mixed OC was demonstrated than its single component CaSO_(4) or CeO_(2) due to the fast transfer and exchange of oxygen from the CaSO_(4) substrate to coal via the doped CeO_(2).Furthermore,the solid products formed from the mixed CaSO_(4)-CeO_(2) OC with the selected coal were collected and analyzed.Especially,evolution and redistribution of the sulfur species of different forms were focused.At the latter reaction stage of YN reaction with the CaSO_(4)-CeO_(2) mixed OC,the SO_(2) emitted from the side reactions of CaSO_(4) was greatly diminished and the doped CeO_(2) was proven effective to directionally fix the SO_(2) released to turn into different solid sulfur compounds,which were determined as Ce_(2)O_(2)S,Ce_(2)S_(3) and Ce_(2)(SO_(4))_(3)·5H_(2)O and formed through the different pathways.In addition,good regeneration of the reduced CaSO_(4)-CeO_(2) mixed OC could be reached in spite of the unavoidable interaction between the included minerals in coal and the reduced mixed OC.Overall,the combined template method-made CaSO_(4)-CeO_(2) mixed OC reported herein was not only endowed with enhanced reactivity for coal conversion,but also owned the potential to directionally fix the gaseous sulfur emission,which is quite applicable as OC for simultaneous decarb

关键词： Coal combustion CO_(2)capture Chemical looping combustion CaSO4 mixed oxygen carrier Template combined synthesis method Sulfur evolution

Roles of short-chain fatty acids in kidney diseases

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Chinese Medical Journal 2019年第10期132卷 1228-1232页

作者： Ling-Zhi Li Si-Bei tao liang Ma Ping Fu Kidney Research Institute West China Hospital Sichuan University Chengdu Sichuan 610041 China Division of Nephrology West China Hospital Sichuan University Chengdu Sichuan 610041 China

Objective: In kidney diseases, uncontrolled blood pressure, inflammation, oxidative stress, imbalanced immunity response, metabolic dysfunction were associated with the progressive deterioration of renal function. Short-chain fatty acids (SCFAs), as a group of metabolites fermented by gut microbiota exerted regulatory effects on kidney diseases through their activation of transmembrane G protein-coupled receptors and their inhibition of histone acetylation. In this review article, we updated recent research advances that provided an opportunity to explore our understanding in physiology and function of SCFAs in kidney disease. Data sources: We performed a comprehensive search in both PubMed and Embase using short-chain fatty acids55 and "kidney" with no restrictions on publication date. Study selection: After reading through the title and abstract for early screening, the full text of relevant studies was identified and reviewed to summarize the roles of SCFAs in kidney diseases. Results: Though controversial, growing evidence suggested SCFAs appeared to have a complex but yet poorly understood communications with cellular and molecular processes that affected kidney function and responses to injury. From recent studies, SCFAs influenced multiple aspects of renal physiology including inflammation and immunity, fibrosis, blood pressure, and energy metabolism. Conclusions: The roles of intestinal SCFAs in kidney diseases were exciting regions in recent years;however, clinical trials and animal experiments in kidney diseases were still lacked. Thus, more research would be needed to obtain better understanding of SCFAs' potential effects in kidney diseases.

关键词： Gut microbiome Short-chain fatty acid Kidney disease Gut-kidney axis

Nucleophilic Substitution Polymerization-Induced Emission of 1,3-Dicarbonyl Compounds as a Versatile Approach for Aggregation-Induced Emission Type Non-Traditional Intrinsic Luminescence

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中国化学:英文版 2023年第14期41卷 1705-1712页

作者： Yu-Jiao Chen Meng-Qin Pu liang-tao Wu Xiao-Li Sun Wen-Ming Wan College of Environment and Resources Engineering Research Center of Polymer Green Recycling of Ministry of EducationFujian Key Laboratory of Pollution Control&Resource ReuseFujian Normal UniversityFuzhouFujian350007 China Key Laboratory of Coal to Ethylene Glycol and Its Related Technology State Key Laboratory of Structural ChemistryCenter for Excellence in Molecular SynthesisFujian Institute of Research on the Structure of MatterChinese Academy of Sciences155 Yangqiao Road WestFuzhouFujian350002 China College of Chemistry and Materials Science Fujian Normal UniversityFuzhouFujian350007 China

Nucleophilic substitution reaction and 1,3-dicarbonyl compounds play significant roles in organic chemistry, and non-traditional intrinsic luminescence (NTIL) has become an emerging research area. Here, we demonstrate the successful nucleophilic substitution polymerization of 1,3-dicarbonyl compounds, including acetylacetone, 3,5-heptanedione, methyl acetoacetate, cyclopentane-1,3-dione, 1,3-indandione, 1-phenyl-1,3-butanedione and dibenzoylmethane, where reactive hydrogens at α position of 1,3-dicarbonyl compounds are involved. Through this base catalyzed nucleophilic substitution polycondensation between 1,3-dicarbonyl compounds and α,α’-dibromo xylene, a series of nonconjugated poly(1,3-dicarbonyl)s have been successfully prepared with high yield (up to >99%) under mild conditions. Investigations reveal that this nucleophilic substitution polycondensation exhibits self-accelerating effect and flexible stoichiometry characteristics, which exhibits advantages over traditional polycondensation methods. This polymerization also exhibits intriguing polymerization-induced emission (PIE) characteristics, where nonconjugated poly(1,3-dicarbonyl)s exhibit intriguing chemical structure dependent aggregation-induced emission (AIE) type NTIL. This work therefore expands the monomer, method, chemical structure and property libraries of polymer chemistry, which may cause inspirations to polymerization methodology, PIE, AIE and NTIL.

关键词： Polymerization Luminescence Polymerization-induced emission Ketones Aggregation-induced emission

Well-defined phosphate yttrium dialkyl complexes for catalytic stereo-controllable 1,4-polymerization of isoprene

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Chinese Chemical Letters 2022年第5期33卷 2402-2406页

作者： Pusu Yang Hui-Zhen Du Xiang-Yu Zhang Yong-liang Xia Jun-tao Sun Qian Peng Bing-tao Guan College of Chemistry Nankai UniversityTianjin 300071China Department of Chemistry Fudan UniversityShanghai 200438China

Oxygen ligation is envisioned to provide a stable and distinctive coordination environment to the strongly oxophilic rare-earth metals. However, the well-defined dialkyl complexes bearing oxyanion ancillary ligand had been rarely addressed for the instability of the complexes and the shortage of easily available ligands. Herein, we report the synthesis of phosphate ligated dialkyl yttrium complexes(PYR2) featuring a high stability and a tunable ligand. Treated with the borate reagent, the phosphate yttrium complex displays high activity and selectivity in the catalytic cis-1,4-polymerization of isoprene(up to 96.5%). Furthermore, using AlMe_(3) as an additive, the stereoselectivity switches to trans-1,4-polymerization(up to 92.0%).

关键词： Phosphate Yttrium alkyls Isoprene Stereo-controllable 1,4-Polymerization

Compression and shearing force on kernel rupture in shelling fresh lotus seeds

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International Journal of Agricultural and Biological Engineering 2021年第1期14卷 237-242页

作者： Jincheng He Zhiying tao Shihua liang Dapeng Ye College of Mechanical and Electrical Engineering Fujian Agriculture and Forestry UniversityFuzhou 350002China

The mechanical properties of fresh lotus seeds are still poorly understood,which complicates the design of mechanical shelling machinery.Therefore,this work carried out four-factor orthogonal tests to determine the maximum permitted compressive force and minimum necessary shearing force to shell fresh lotus seeds without rupturing the kernel.It was found that the mean compression force that cracked the fresh lotus seed and led to kernel rupture was 213.03 N.Both the compressive force and the seed deformation upon kernel rupture were affected,in descending order of significance,by loading mode,seed grade,loading rate,and seed standing time.On the other hand,the shearing force needed to shell the seeds had a mean value of 7.84 N,far less than the compressive force that cracked the seed shell.The shearing force was affected,in descending order of significance,by seed standing time,tip angle of cutter blade,and loading rate,but not significantly affected by seed grade.The results suggested that mechanical shelling of fresh lotus seeds should ideally be carried out for fresh lotus seeds with a standing time of no more than 6 h using a cutter blade with an angle of about 40°at a loading rate of 30-90 mm/min.

关键词： shelling fresh lotus seeds mechanical properties shearing compression kernel rupture