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Polyoxometalates for continuous power generation by atmospheric humidity

Nano Research 2024年第3期17卷 1875-1885页

作者： Tuo Ji Weilin Chen Zhenhui Kang Liming Zhang Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Northeast Normal UniversityChangchun 130024China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices DepartmentSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipaMacao 999078China Institute of Functional State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

atmospheric humidity is a sustainable low-value energy widely existing in natural environment,which is a promising candidate to solve the noncontinuous and low efficiency of low-value energy power *** the mono-substituted Dawson-type polyoxometalates are constructed to be highly dispersed organic ammonium-polyoxoanion clusters and are assembled into thin films power generators with micropores,working in atmospheric *** optimal polyoxometalates generator with the thickness of 7.2μm and the area of 0.36 cm^(2) produces a voltage of 0.68 V and a current density of 19.5μA·cm^(-2) under simulated natural environment,and works continuously and stably under almost all-natural environments(humidity 10%–90%).The highly dispersed polyoxometalate nanoclusters can form microporous in polyoxometalate films to effectively absorb atmospheric humidity and spontaneously form distribution gradient of water,which is the structural basis of power *** continuous power generation may be maintained by the effective adsorption and utilization of H_(2)O,the huge electrostatic field of organic ammonium-polyoxoanion clusters,and the reasonably designed polyoxometalates containing inorganic small ions with high *** is the first humidity generator designed with polyoxometalates,which may provide a new research direction for polyoxometalates in sustainable utilization of low-value energy.

关键词： atmospheric humidity continuous power generations nanomaterials polyoxoanions polyoxometalates

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Charging states on atmospheric aerosol particles affected by meteorological conditions

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Particuology 2020年第5期18卷 1-9页

作者： Yuanping He Zhaolin Gu Weizhen Lu Liyuan Zhang Daizhou Zhang Tomoaki Okuda Chuck Wah Yu Department of Earth and Environmental Sciences Xi'an Jiaotong UniversityXi'an 710049China Department of Architecture and Civil Engineering City University of Hong KongKowloon TongHong KongChina Department of Environmental Engineering Chang'an UniversityXi'an 710064China Faculty of Environmental Symbiotic Sciences Prefectural University of KumamotoKumamoto 862-8502Japan Department of Applied Chemistry Keio University3-14-1 HiyoshiKohoku-kuYokohama 223-8522Japan International Society of the Built Environment(1SBE) Milton Keynes MK78HQUK

Previous studies on haze formation focused mainly on the various chemical components in aerosol particles and their physicochemical effects on particle behaviour(e.g.,generation,growth,and agglomeration).This paper describes the measurement of the charging state on atmospheric aerosol particles,which could be affected by meteorological conditions.A series of experiments on particle charging state and meteorological factors was undertaken on the roof of the west 4th building on the Qujiang Campus at Xi'an Jiaotong University(China).Measurements were conducted approximately 20 m above ground level,Our results showed that most atmospheric particles carried net negative or positive charge and that the electric charge on the particles varied diurnally and *** average amount of charge on particles was higher in winter than in *** number concentration of charged particles was higher during the day than *** difference in the average charge of aerosol particles was found between sand-dust days and haze days.A strong relationship was found between the PM2.s concentration,charge amount on particles,and *** findings show that particle formation and growth could partly be attributed to variation in particle charging state,which is related to meteorological conditions including atmospheric humidity.

关键词： Aerosol particles atmospheric humidity Charging state Haze day Physicochemical effect Sand-dust day

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