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Nano-Au-decorated hierarchical porous cobalt sulfide derived from ZIF-67 toward optimized oxygen evolution catalysis:Important roles of microstructures and electronic modulation

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Carbon Energy 2024年第5期6卷 1-14页

作者： Hongyu Gong Guanliang Sun Wenhua Shi Dongwei Li Xiangjun Zheng Huan Shi Xiu Liang Ruizhi Yang changzhou Yuan Department of New Energy Materials School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiangJiangsuChina Advanced Materials institute Qilu University of Technology(Shandong Academy of Sciences)JinanShandongChina Shandong Saikesaisi Hydrogen Energy Co. Ltd.JinanShandongChina Department of Materials Science and engineering School of Materials Science&EngineeringUniversity of JinanJinanShandongChina Department of New Energy Science and engineering College of EnergySoochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhouJiangsuChina

Enhancing both the number of active sites available and the intrinsic activity of Co-based electrocatalysts simultaneously is a desirable ***,a ZIF-67-derived hierarchical porous cobalt sulfide decorated by Au nanoparticles(NPs)(denoted as HP-Au@CoxSy@ZIF-67)hybrid is synthesized by low-temperature sulfuration *** well-defined macroporous-mesoporous-microporous structure is obtained based on the combination of polystyrene spheres,as-formed CoxSy nanosheets,and ZIF-67 *** novel three-dimensional hierarchical structure significantly enlarges the three-phase interfaces,accelerating the mass transfer and exposing the active centers for oxygen evolution *** electronic structure of Co is modulated by Au through charge transfer,and a series of experiments,together with theoretical analysis,is performed to ascertain the electronic modulation of Co by ***,HP-Au@CoxSy@ZIF-67 catalysts with different amounts of Au were synthesized,wherein Au and NaBH4 reductant result in an interesting“competition effect”to regulate the relative ratio of Co^(2+)/Co^(3+),and moderate Au assists the electrochemical performance to reach the highest ***,the optimized HP-Au@CoxSy@ZIF-67 exhibits a low overpotential of 340 mV at 10 mA cm^(-2)and a Tafel slope of 42 mV dec-1 for OER in 0.1 M aqueous KOH,enabling efficient water splitting and Zn-air battery *** work here highlights the pivotal roles of both microstructural and electronic modulation in enhancing electrocatalytic activity and presents a feasible strategy for designing and optimizing advanced electrocatalysts.

关键词： Au nanoparticles cobalt sulfide electronic modulation hierarchical porous structure oxygen evolution reaction

Multiple metal sources in polymetallic W-Sn ore deposits revealed by mercury stable isotopes

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Science china Earth Sciences 2024年第11期67卷 3465-3475页

作者： Zhendong TIAN Bernd LEHMANN changzhou DENG Xingchun ZHANG Anbo LUO Yinghua CHEN Runsheng YIN State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Mineral Resources Technical University of Clausthal Faculty of Land Resource engineering Kunming University of Science and Technology

Granite-related W-Sn ore systems are commonly associated with coeval Pb-Zn mineralization. It remains unclear whether these metals are derived from the same sources or not. Mercury（Hg） is a common minor component in such systems. Hg isotopes undergo unique mass-independent fractionation(expressed as Δ199Hg values), which is mainly generated during Hg photochemical reactions on Earth's surface and not affected by magmatic-hydrothermal processes, offering an excellent opportunity to trace metal sources in hydrothermal systems. We observed near-zero Δ199Hg values in wolframite（-0.10‰ to0.08‰, n=11）, and in skarn-（-0.17‰ to 0.12‰, n=48） and greisen-type（-0.12‰ to 0.10‰, n=11） bulk tin-tungsten ore from eight major ore deposits in South china. These values are identical to those of coeval highly evolved granites（-0.13‰ to 0.12‰,n=49）, supporting that Hg in W-Sn ores were sourced from granite. However, sulfides（e.g., pyrite, chalcopyrite, arsenopyrite,galena, and sphalerite） in these deposits exhibit negative to near-zero Δ199Hg values（-0.42‰ to 0.09‰, n=124）, which indicates a contribution of Hg and by inference other metals from both Precambrian basement rocks(Δ199Hg<0) and ore-related *** study demonstrates that multiple sources of metals were involved in the formation of the polymetallic W-Sn deposits, and further highlights that extraction of metals from basement rocks may be a critical control on the formation of economically important mineralization of base metal sulfides（e.g., Pb, Zn） in granite-related magmatic-hydrothermal systems.

关键词： Tin-tungsten deposit Mercury isotope Metal source Metal zonation South china

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Green intelligent fertilizers——A novel approach for aligning sustainable agriculture with green development

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Frontiers of Agricultural Science and engineering 2024年第1期11卷 186-196页

作者： Maoying WANG Lingyun CHENG Chengdong HUANG Yang LYU Lin ZHANG Zhenya LU changzhou WEI Wenqi MA Zed RENGEL Jianbo SHEN Fusuo ZHANG State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentKey Laboratory of Plant–Soil Interactions(Ministry of Education)China Agricultural UniversityBeijing 100193China college of Agronomy Shihezi UniversityShihezi 832000China college of Resources and Environmental Science Hebei Agricultural UniversityBaoding 071000China Soil Science and Plant Nutrition UWA School of Agriculture and EnvironmentThe University of Western AustraliaPerthWA 6009Australia institute for Adriatic Crops and Karst Reclamation Split 21000Croatia

This review addresses the growing disparity between the current state of fertilizer production in china and the evolving demands of green agriculture in the 21st century. It explores major advances in fertilizers, proposes the concept of green intelligent fertilizers and develops new strategies aligned with the principles of green development in fertilizer industry and *** intelligent fertilizers may be designed to maximize the synergistic effects among plants, soils, microorganisms, nutrient sources and the environment. This concept emphasizes the integration of industry and agriculture toward green development for entire industry chain, using an interdisciplinary approach to drive the green transformation of fertilizer industry, and promote green and sustainable development of agriculture. By bridging the gap between the current state of fertilizer industry and a growing need for environmentally responsible agricultural practices, this review highlights a path toward harmonizing fertilizer production with the imperatives of green agriculture.

关键词： Root-nutrient feedback green development intelligent fertilizers new fertilizer plant-soil-fertilizer interaction rhizosphere engineering

Permian tectonic evolution and continental accretion in the eastern Central Asian Orogenic Belt:A perspective from the intrusive rocks

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Geoscience Frontiers 2024年第2期15卷 433-451页

作者： Anzong Fu Hongyan Geng changzhou Deng Chenglu Li Jishuang Ding Bizheng Yang Wenpeng Yang Heilongjiang institute of Natural Resources Survey Harbin 150036China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China Science Unit Lingnan UniversityHong KongChina college of Earth Sciences Jilin UniversityChangchun 130061China

The tectonic evolution and history of continental accretion of the eastern Central Asian Orogenic Belt(CAOB)are not yet fully *** this study,we investigate Permian intrusive rocks from the Jiamusi Block of the eastern CAOB to constrain the tectonic evolution and continental accretion of this region during the late-stage evolution of the Paleo-Asian *** new data show that Early Permian gabbro-diorites were derived from the partial melting of depleted mantle metasomatized by oceanic-slab-released *** Permian adakitic granites have low Na2O and MgO and high K2O contents,indicating a thickened-lower-crust *** Permian S-type granites were derived from the partial melting of continental crust.A compilation of the available geochronological data for Permian intrusive rocks(including adakitic and A-,S-,and I-type granites and mafic rocks)from the eastern CAOB reveals that the A-type granites formed mainly during the Early–Middle Permian,S-type and adakitic granites mostly during the Middle–Late Permian,and I-type granites and mantle-derived mafic rocks throughout the *** A-type granites,which are proposed to have been sourced from thinned continental crust,indicate an extensional setting in the eastern CAOB during the Early *** Middle–Late Permian adakitic granites imply a thickened continental crust,which indicates a compressional ***,the eastern CAOB underwent a transition from extension to compression during the Middle Permian,which was probably triggered by the late-stage subduction of Paleo-Asian oceanic *** the petrogenesis of the intrusive rocks and inferred regional tectonic evolution of the eastern CAOB,we propose that vertical underplating of mantle-and oceanic-slabderived magmas contributed the materials for continental crust accretion.

关键词： Permian Intrusive rocks Eastern Central Asian Orogenic Belt Paleo-Asian Ocean Tectonic evolution

s-ordering operator expansions of quantum-mechanical fundamental representations and their applications

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Science china(Physics,Mechanics & Astronomy) 2011年第12期54卷 2150-2154页

作者： FAN HongYi 1,3 , XU YeJun 2 & YUAN HongChun 3,4 1 Department of Materials Science and engineering, University of Science and technology of china, Hefei 230026, china 2 Department of Physics Electronic and engineering, Chizhou University, Chizhou 247000, china 3 Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, china 4 college of optoelectronic engineering, changzhou institute of technology, changzhou 2.3002. china Department of Materials Science and engineering University of Science and Technology of China Hefei China Department of Physics Shanghai Jiao Tong University Shanghai China Department of Physics Electronic and engineering Chizhou University Chizhou China college of optoelectronic engineering Changzhou Institute of Technology Changzhou China

We show that the quantum-mechanical fundamental representations, say, the coordinate representation, the coherent state representation, the Fan-Klauder entangled state representation can be recast into s-ordering operator expansion, which is elegant in form and has many applications in deriving new operator identities. This demonstrates that Dirac's symbolic method can be merged into Newton-Leibniz integration theory in a broad way.

关键词： s-ordering operator expansion operator identities quantum mechanical representation

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RaptorQ喷泉码编译码算法分析及优化

系统工程与电子技术 2024年第4期46卷 1440-1447页

作者：马梦宇罗长洲梁春瑞王杰北京控制与电子技术研究所北京100038 中国航天科工集团二院研究生院北京100854

RaptorQ喷泉码是喷泉码的最新研究成果,理论分析和仿真验证表明,RaptorQ喷泉码是性能最好的喷泉码,同时也是编译码复杂度最高的喷泉码。针对RaptorQ喷泉码编译码复杂度高这一问题,以国际标准RFC6330所设计的RaptorQ码编译码流程为基础,... 详细信息

RaptorQ喷泉码是喷泉码的最新研究成果,理论分析和仿真验证表明,RaptorQ喷泉码是性能最好的喷泉码,同时也是编译码复杂度最高的喷泉码。针对RaptorQ喷泉码编译码复杂度高这一问题,以国际标准RFC6330所设计的RaptorQ码编译码流程为基础,提出一种RaptorQ编译码算法的优化版本。新的编译码流程通过固定生成矩阵的方式提前计算好生成矩阵并存储,方便随时调用;通过提前列变换的方式规避多次寻找标准行和高斯消去操作,以及通过去稀疏化的方式,减少编译码过程中的矩阵乘法和异或运算。仿真比较优化前后的编译码算法,结果表明,优化后的RaptorQ码编译码流程能够在保证传输性能不变的同时,减少RaptorQ喷泉码编译码基本运算次数、缩短RaptorQ喷泉码编译码的时间,降低了编译码的计算复杂度,并保持了传输性能。

关键词：喷泉码 RaptorQ RFC6330 编译码算法

基于全二维气相色谱-飞行时间质谱(GC×GC-TOFMS)法溯源溪流水体中有机污染物的来源研究

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环境科学学报 2024年第3期44卷 206-214页

作者：张国慧廖旭颜昌宙张娴中国科学院城市环境研究所厦门361021 福建农林大学生命科学学院福州350002

城市溪流水资源存在水体污染程度较高、污染来源复杂等问题,导致污染物溯源难,污染治理难度大.本研究以厦门某溪流为研究对象,利用全二维气相色谱-飞行时间质谱联用技术(GC×GC-TOFMS)对选定的5个样点进行了有机物的非靶向分析(其中,X1... 详细信息

城市溪流水资源存在水体污染程度较高、污染来源复杂等问题,导致污染物溯源难,污染治理难度大.本研究以厦门某溪流为研究对象,利用全二维气相色谱-飞行时间质谱联用技术(GC×GC-TOFMS)对选定的5个样点进行了有机物的非靶向分析(其中,X1~X4代表支流,X5代表主干流).通过结合受体模型、相似度算法和非负最小二乘法,对下游干流的有机污染物进行了溯源分析.结果显示:5个点位分别检出有机物88、110、123、64、103种,主要为烷烃类、醇类和其他氮氧化合物等有机污染物. 4个上游支流点位(X1~X4)与干流水体(X5)之间的相似度分别为0.46、0.48、0.41、0.32.非负最小二乘法计算出的各支流点位对干流水体污染贡献度分别为1%、43.3%、30.1%、23.2%,二者溯源结果都表明下游干流水体的污染主要来源于支流X2.全二维气相色谱-飞行时间质谱联用技术在鉴定水中未知有机污染物方面具有显著优势,结合数学模型,为有机污染物的溯源提供了有力的技术支撑.

关键词：全二维气相色谱-飞行时间质谱(GC×GC-TOFMS) 有机污染物水污染污染源解析

Comparison between photon annihilation-then-creation and photon creation-then-annihilation thermal states:Non-classical and non-Gaussian properties

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Chinese Physics B 2014年第7期23卷 251-256页

作者：徐学翔袁洪春王燕 college of Physics and Communication Electronics Jiangxi Normal University Key Laboratory of optoelectronic and Telecommunication of Jiangxi college of optoelectronic engineering changzhou institute of technology

We investigate the nonclassical properties of arbitrary number photon annihilation-then-creation operation （AC） and creation-then-annihilation operation （CA） to the thermal state （TS）, whose normalization factors are related to the polylog- arithm function. Then we compare their quantum characters, such as photon number distribution, average photon number, Mandel Q-parameter, purity and the Wigner function. Because of the noncommutativity between the annihilation operator and the creation operator, the ACTS and the CATS have different nonclassical properties. It is found that nonclassical properties are exhibited more strongly after AC than after CA. In addition we also examine their non-Gaussianity. The result shows that the ACTS can present a slightly bigger non-Gaussianity than the CATS.

关键词： annihilation-then-creation creation-then-annihilation Wigner function nonclassicality

Effect of the Sputtering Parameters on the Structure and Properties of Cu_3N Thin Film Materials

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Journal of Wuhan University of technology(Materials Science) 2010年第6期25卷 935-937页

作者：钱显毅黄致新 School of Electronic Information & Electric engineering Changzhou Institute of Technology college of Physical Science and technology Cental China Normal University

Copper nitride （Cu3N） thin films were successfully deposited on glass substrates by reactive radio frequency magnetron *** effects of sputtering parameters on the structure and properties of the films were *** experimental results show that with increasing of RF power and nitrogen partial pressure,the preferential crystalline orientation of Cu3N film is changed from （111） to （100）.With increasing of substrate temperature from 70 ℃ to 200 ℃,the film phase is changed from Cu3N phase to *** increasing sputtering power from 80 W to 120 W,the optical energy decreases from 1.85 eV to 1.41 eV while the electrical resistivity increases from 1.45 ×102 Ω·cm to 2.99×103 Ω·cm,respectively.

关键词： copper nitride sputtering parameters structure electrical and optical properties