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Smart Gas Sensors:Recent Developments and Future Prospective

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Nano-Micro Letters 2025年第3期17卷 55-86页

作者： Boyang Zong Shufang Wu Yuehong Yang Qiuju Li Tian Tao shun Mao College of Environmental Science and Engineering Biomedical Multidisciplinary Innovation Research InstituteShanghai East HospitalState Key Laboratory of Pollution Control and Resource ReuseTongji University1239 Siping RoadShanghai 200092People’s Republic of China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092People’s Republic of China Microbiome Medicine Center Department of Laboratory MedicineZhujiang HospitalSouthern Medical UniversityGuangzhou 510280People’s Republic of China

Gas sensor is an indispensable part of modern society withwide applications in environmental monitoring,healthcare,food industry,public safety,*** the development of sensor technology,wireless communication,smart monitoring terminal,cloud storage/computing technology,and artificial intelligence,smart gas sensors represent the future of gassensing due to their merits of real-time multifunctional monitoring,earlywarning function,and intelligent and automated *** electronicand optoelectronic gas sensors have been developed for high-performancesmart gas *** the development of smart terminals and the maturityof integrated technology,flexible and wearable gas sensors play an increasingrole in gas *** review highlights recent advances of smart gassensors in diverse *** structural components and fundamentalprinciples of electronic and optoelectronic gas sensors are described,andflexible and wearable gas sensor devices are ***,sensorarray with artificial intelligence algorithms and smart gas sensors in“Internet of Things”paradigm are ***,the challengesand perspectives of smart gas sensors are discussed regarding the future need of gas sensors for smart city and healthy living.

关键词： Smart gas sensor Electronic sensor Optoelectronic sensor Flexible and wearable sensor Artificial intelligence

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体认即反思

河北学刊 2025年第1期45卷 11-19页

作者：沈顺福山东大学易学与中国古代哲学研究中心暨儒学高等研究院

体认是宋明理学的重要概念之一,主要是指由心灵自身所发动的、面对自身的活动。这种对自身的心灵活动便是现代哲学的反思。体认既是对天理的体合、实现心理合一,也是让本性澄明。理学家认为,自然的浊气遮蔽了天生的本性,而体认便是心灵... 详细信息

体认是宋明理学的重要概念之一,主要是指由心灵自身所发动的、面对自身的活动。这种对自身的心灵活动便是现代哲学的反思。体认既是对天理的体合、实现心理合一,也是让本性澄明。理学家认为,自然的浊气遮蔽了天生的本性,而体认便是心灵对气质浑浊的心灵的活动,通过纯洁气质,让性澄明。心理合一也是本性澄明——理即性;对本性的觉察也是对自身身份的觉悟,形成主体——性即体。对性的认可便是对理的接受与遵循;体认天理的活动便是合“理”的超越性活动。

关键词：体认反思理理学

Ni-catalyzed cross-electrophile alkyl-alkyl coupling reactions

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Science China Chemistry 2025年

作者： Li-Xu You Lan Tian Chun-Ling Guo shun-Xi Li Yu-Cheng Liu Yu-Long Li Wei Shu College of Chemistry and Environmental Engineering Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan Sichuan University of Science and Engineering Guangming Advanced Research Institute Shenzhen Grubbs Institute Department of Chemistry and Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology

Introducing saturated carbon-carbon bonds into organic molecules significantly increases the three-dimensional configuration,thus altering the physical and chemical properties as well as the functions of molecules. Transition-metal-catalyzed carboncarbon cross-couplings represent one of the most straightforward, efficient and modular alternatives to build saturation in a single step. However, the efficient construction of alkyl-alkyl bonds remains a formidable challenge due to the precise manipulation of multiple alkyl metallic intermediates as well as associated competitive side reactions and selectivity control. Over the past years, Ni-catalyzed cross-coupling under reductive conditions has gained more and more attention for alkyl-alkyl crosscoupling partially attributing to the low-valent state of metal centers under reducing conditions, which suppresses the competitive β-hydride elimination process, thus facilitating the formation of alkyl-alkyl bonds. In this review, the initiative and progress of Ni-catalyzed cross-electrophile alkyl-alkyl cross-coupling, including the efforts in racemic and enantioselective formation of alkyl-alkyl bonds, have been summarized and discussed. Moreover, the challenges and further opportunities in this area have also been discussed.

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Negative PO3-implanted bionic ion transport channels for promoting Li-S battery

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Science China Chemistry 2025年

作者： Wenhuan Huang shun Wang Xuehan Hou Yanan Zhang Xingxing Zhang Yaoxiao Zhao Xilang Jin Huabin Zhang Fei Wang Jian Zhang Key Laboratory of Chemical Additives for China National Light Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and Technology School of Materials and Chemical Engineering Xi'an Technological University Chemistry Program Physical Science and Engineering Division King Abdullah University of Science and Technology State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Lithium-sulfur （Li-S） battery,as a promising next-generation high-energy-density battery,suffers from lithium polysulfides（LPSs） shuttle and Li dendrites *** crystalline framework-based membranes as separator can effectively absorb and restrain LPSs but without precise structural design principal exploration and mechanism ***,bio-inspired 1D oriented lithium-ion transport channels with molecular negatively charged PO3（-1） have been developed in hybrid tetrazole frameworks for promoting the transmission of Li+*** theoretical calculations and in situ spectroscopy demonstrated the higher binding energy and inhibited diffusion of LPSs in *** assembled PP@PO3Janus separator in Li-S coin cell delivered a high initial capacity of 1410.9 mAh g-1at 0.1 C and a low attenuation rate of 0.038%per cycle over 500 cycles at 5 ***,the high capacities of 862,542 and 409 mAh g-1based on high-sulfur-loading cathodes of 2.6,3.8 and 5.0 mg cm-2at0.5 C were achieved,***,the punch battery of PO3@PP separator with S-cathode of 1.2 mg cm-2has been developed for demonstrating its potentials commercial application,which displays impressive capacity of 873.4 mAh g-1with the retention of～78.9%over 50 cycles.

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Synthesis of Silica Hollow Spheres with Diameter Around 50 nm by Anionic Surfactant

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Chemical Research in Chinese Universities 2012年第3期28卷 361-363页

作者： ran Hua HAN Lu CHE shun-ai State Key Laboratory of Composite Materials Thin Film and Microfabrication Technology of Ministry of EducationSchool of Chemistry and Chemical TechnologyShanghai Jiaotong UniversityShanghai 200240P.R.China

Silica hollow spheres（SHSs） have attracted great attention because of their low toxicity, low density, large surface area, high chemical and thermal stability, and surface permeability. They can be widely applied in storage^[l], catalysis^[2], drug deli- very^[3,4], low-dielectric-constant materials^[5], low-refractive materials^[6-8], and so on. Up to now, there have been various methods to produce SHSs. Inorganic^[9] or organic particles^[10], such as polystyrene or calcium carbonate, were used as hard templates to create hollow cavities, However, the multistep synthetic process and the lack of structural robustness of the shells upon template removal process weaken their applica- tion. Soft templates, including oil-in-water emulsions^[11,12], vesicles^[13], micelle^[14,15] and gas bubbles^[16], are applied widely.

关键词： Anionic surfactant Co-Structure directing agent(CSDA) Vesicle

Tungsten combustion in impact initiated W-Al composite based on W(Al) super-saturated solid solution

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Defence Technology（防务技术） 2023年第7期25卷 112-120页

作者： Kong-xun Zhao Xiao-hong Zhang Xiao-ran Gu Yu Tang shun Li Yi-cong Ye Li'an Zhu Shu-xin Bai College of Aerospace Science and Engineering National University of Defense TechnologyChangsha410073China

Element W can effectively improve the density of energetic structural materials. However, W is an inert element and does not combust in air. To change the reaction characteristics of W, 60 at.% Al was introduced into W through mechanical alloying. XRD analysis shows that after 50 h of ball milling, the diffraction peak of Al completely disappears and W(Al60) super-saturated solid solution powder is obtained. Further observation by HAADF and HRTEM reveals that the W(Al60) super-saturated solid solution powder is a mixture of solid solution and amorphous phase. Based on the good thermal stability of W(Al60) alloy powder below 1000℃, W(Al60)-Al composite was synthesized by hot pressing *** initiation experiments suggest that the W(Al60)-Al composite has excellent reaction characteristics, and multiple types of tungsten oxides are detected in the reaction products, showing that the modified W is combustible in air. Due to the combustion of tungsten, the energy release rate of the W(Al60)-Al composite at speed of 1362 m/s reaches 2.71 kJ/g.

关键词： Tungsten combustion Reactive materials Super-saturated solid solution Shock-induced reactions WeAl composite

Impact of laser scanning speed on microstructure and mechanical properties of Inconel 718 alloys by selective laser melting

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China Foundry 2021年第3期18卷 170-179页

作者： hong-ying Wang Bin-bin Wang Liang Wang ran Cui Liang-shun Luo Yan-qing Su National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Jiamusi UniversityJiamusi 154007China

Inconel 718 alloys were fabricated by selective laser melting under different scanning speeds to investigate the change of the morphology of molten pool,direction of grain growth,and tensile *** show that as the scanning speed increases from 1,000 to 1,450 mm·s^(-1),the ratio between depth and width of molten pool increases,yet their overlapping regimes ***,increasing scanning speed can promote the solidified structure evolve from cell to columnar dendrites,and decrease the dendrite spacing from 0.54 to 0.39 μm;the average columnar grain size also decreases from 84.42 to 73.51 μ*** different scanning speeds,the preferred orientation of grains along the building is mainly *** addition,the tensile properties of samples under different scanning speeds present a non-monotonic *** maximum ultimate tensile strength and elongation can reach 1,014±19 MPa and 19.04±1.12 (%),respectively,at the scanning speed of 1,300 mm·s^(-1).

关键词： selective laser melting(SLM) Inconel 718 molten pool microstructure

Fractal characteristics of filamentous bacteria in activated sludge and its significance

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Journal of Environmental Sciences 2000年第2期12卷 59-63页

作者： Yi, shun-Min Zhao, Wen-Qian Li, ran State Key Hydraulic Laboratory of High Speed Flows Sichuan Union University Chengdu 610065 China

On the basis of fractal theory, the fractal characteristics of filamentous bacteria in activated sludge are studied by image dissector system. The results show that the spatial distribution structure of filamentous bacteria in activated sludge has high self similarity in statistics and the filamentous bacteria have clear phenomenon of fractal growth. The critical fractal dimension values of filamentous bacteria bulking such as Eikelboom 021N, Eikelboom 1701, Sphaerotilus natans and Eikelboom 0041 are determined initially. The fractal dimensions can be taken as a parameter to describe filamentous bacteria of activated sludge quantitatively and bring to light the disorder in appearance and the rule in inherence of filamentous bacteria system.

关键词： activated sludge filamentous bacteria fractal fractal growth fractal dimension CLC number: X703 Document code: A

First principles study on magnetic and electronic properties with rare-earth atoms doped SWCNTs

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Frontiers of physics 2012年第3期7卷 353-359页

作者： shun-li Yue hong Zhang College of Physical Science and Technology Sichuan UniversityChengdu 610065China

The adsorptions of rare-earth （RE） atoms on （6, 0） and （8, 0） single-walled carbon nanotubes （SWCNTs） have been investigated by using the first-principles pseudopotential plane wave method within density functional theory （DFT）. The binding energy, Mulliken charge, magnetic properties, band structure and DOS were calculated and analyzed. Most of RE atoms including Nd, Sm and Eu have a magnetic ground state with a significant magnetic moment. Some electrons transfer between RE-5d, 6s and C-2p orbitals. Owing to the curvature effect, the values of binding energy for RE atoms doped （6, 0） SWCNT are lower than those of the same atoms on （8, 0） SWCNT. The pictures of DOS show that hybridizations between RE-5d, 6s states and C-2p orbitals and between RE-4f and C-2p orbitals appear near the Fermi level. Results indicate that the properties of SWCNTs can be modified by the adsorptions of RE atoms.

关键词： DFT RE atoms single-walled carbon nanotubes (SWCNTs) doping