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In-situ Construction of Sulfur-doped g-C_(3)N_(4)/defective g-C_(3)N_(4) Isotype Step-scheme Heterojunction for Boosting Photocatalytic H_(2) Evolution

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Chinese Journal of Structural Chemistry 2022年第1期41卷 25-33页

作者： Jing Zou Guodong Liao Jizhou Jiang Zhiguo Xiong Saishuai Bai Haitao Wang Pingxiu Wu Peng Zhang Xin Li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Semiconductor Electronic Special Gas of Hubei Engineering Research Center JingzhouHubei 434000China State Center for International Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

The rational construction of a high-efficiency stepscheme heterojunctions is an effective strategy to accelerate the photocatalytic H_(2).Unfortunately,the variant energy-level matching between two different semiconductor confers limited the photocatalytic ***,a newfangled graphitic-carbon nitride(g-C_(3)N_(4))based isotype step-scheme heterojunction,which consists of sulfur-doped and defective active sites in one microstructural unit,is successfully developed by in-situ polymerizing N,N-dimethylformamide(DMF)and urea,accompanied by sulfur(S)***,the polymerization between the amino groups of DMF and the amide group of urea endows the formation of rich *** propulsive integration of S-dopants contributes to the excellent fluffiness and dispersibility of lamellar g-C_(3)N_(4).Moreover,the developed heterojunction exhibits a significantly enlarged surface area,thus leading to the more exposed catalytically active *** importantly,the simultaneous introduction of S-doping and defects in the units of g-C_(3)N_(4) also results in a significant improvement in the separation,transfer and recombination efficiency of photo-excited electron-hole ***,the resulting isotype step-scheme heterojunction possesses a superior photocatalytic H_(2) evolution activity in comparison with pristine g-C_(3)N_(4).The newly afforded metal-free isotype step-scheme heterojunction in this work will supply a new insight into coupling strategies of heteroatoms doping and defect engineering for various photocatalytic systems.

关键词： sulfur-doping defects isotype step-scheme heterojunction g-C_(3)N_(4) photocatalytic H_(2)

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Reactive nano-essential oils for sustained release of essential oils and application to wallpaper

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Chinese Chemical Letters 2022年第1期33卷 320-323页

作者： Qiulian Hao Huan Peng Ruichen Zhao Jianze Wang Zhiguo Lu Jingwen Wang Jie Shen Yunwei Niu Zuobing Xiao Guiying Liu Jifu Hao Xin Zhang School of Pharmaceutical Science Shandong First Medical University&Shandong Academy of Medical SciencesTaian 271016China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Department of Pediatrics Capital Medical University Affiliated Beijing Anzhen HospitalBeijing 100029China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China Shanghai Research Institute of Fragrance and Flavor Industry Shanghai 200232China School of Perfume and Aroma Technology Shanghai Institute of TechnologyShanghai 200233China

Essential oils are a volatile and aromatic substance with a variety of active biological ***,the excessive volatility and inconvenience of the use of essential oils limit their *** this study,we developed a reactive mesoporous silica nanoparticle(rMSNs)based on cyanuric chloride modification for essential oil encapsulation and commodity *** large pore volume and specific surface area of rMSNs facilitate the nanoparticles adhering to a large amount of essential oil and achieve the sustained release of essential oil,thus prolonging the fragrance retention time of essential *** reactive nanoessential oils can form covalent bonds with the wallpaper,thereby remarkably improving the adhesion of the reactive nano-essential oils on the wallpaper and preventing the reactive nano-essential oil from deadhering from the *** active nano essential oil simultaneously overcomes the intense volatility of the essential oil and inconvenience in use,has a simple preparation process and low cost,and has great application potential.

关键词： Reactive nano-essential oils Reactive mesoporous silica nanoparticles Slow-release of essential oils Application to wallpaper Covalent bonds

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Extraction of phenol from water by primary amine primene JMT

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Emerging Contaminants 2022年第1期8卷 90-96页

作者： Qingjie Wang Yanchun Shi Deling Yang Pengge Ning Research Beijing Engineering Research Centre of Process Pollution Control National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyDivision of Environment Technology and EngineeringInstitute of Process EngineeringChinese Academy of ScienceBeijing100190China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesNo.18Shuangqing RoadBeijing100085China

In this work,liquid-liquid extraction of phenol from aqueous solutions using primary amine Primene JMT(Primene®JM-T)was *** extraction capability of Primene®JM-T with different diluents,including 3-heptanone,sulfonated kerosene,methyl isobutyl ketone,n-octanol,toluene and petroleum ether was *** experimental results indicated that the distribution coefficient of phenol extracted using Primene®JM-T that was diluted in 3-heptanone could reach 101.74 under the pH of ***,the extraction reaction was exothermic(enthalpy change for the extraction reaction(DrHm)was21.03 kJ/mol).High temperature showed a negative effect on the extraction of *** results also showed that adding mineral salt was conducive to the extraction process,and the extraction effi-ciency fell in the descending order of:(NH_(4))_(2)SO_(4)>NaCl>NH_(4)*** empirical correlations were put forward to quantitatively describe the salting ***,the equilibrium constants of phenol extraction using Primene®JM-T were calculated to be 78.2 L/*** phenol was extracted using Primene®JM-T with the possible stoichiometric formula of:[RNH_(3)^(+),PhOH]_(org),where R represents the alkyl group of the amine.

关键词： Primene®JM-T Phenol Liquid-liquid extraction Distribution coefficient

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In-situ preparation of Cu-BTC modified with organic amines for H_(2)S removal under ambient conditions

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Resources Chemicals and Materials 2023年第2期2卷 143-150页

作者： Zhelin Su Mingxian Duan Yeshuang Wang Huiling Fan Zhen Tian Zhaohui Chen Chao Yang Ju Shangguan State Key Laboratory of Clean and Efficient Coal Utilization Co-founded by Shanxi Province and the Ministry of Science and TechnologyTaiyuan University of TechnologyWest Yingze Street Number 79Taiyuan030024China School of Resources and Environmental Engineering Shanghai Polytechnic UniversityShanghai 201209China State Key Laboratory of Multi-phase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

Amine modification is an effective strategy to improve the H_(2)S removal performance of *** order to avoid the problem of pore blockage after amine modification in post synthesis impregnation,herein a series of Cu-BTC modified with organic amine adsorbents were prepared via an in-situ one-pot method and the H_(2)S removal performance under ambient conditions was *** is found that the introduced organic amines,depending on the types of amine selected,have a significant influence on the growth of Cu-BTC and its textural *** H_(2)S removal performance on the as-prepared materials suggested that the amine modified samples remarkably improved the H_(2)S removal capacities with an order of BA-Cu-BTC>TEA-Cu-BTC>TEOA-Cu-BTC>*** the enlarged surface area and the increased mesopores volumes,BA has the advantages of smaller steric hindrance and-NH_(2)groups,among which the former increased the accessibility of Cu active sites while the latter acted as additional active sites for H_(2)S capturing,thus affording BA-Cu-BTC highest breakthrough capacity of 77.3 mg S/***,this study elaborates the effect of organic amines in-situ modification on the Cu-BTC structure and desulfurization.

关键词： In-situ preparation Organic amines Cu-BTC H_(2)S adsorption

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Improving interface adhesion in TiNi wire/shape memory epoxy composites using carbon nanotubes

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Rare Metals 2021年第4期40卷 934-938页

作者： Xue Feng Li-Min Zhao Xu-Jun Mi Guo-Jie Huang Hao-Feng Xie Xiang-Qian Yin Li-Jun Peng Zhen Yang State Key Laboratory of Nonferrous Metals and Process General Research Institute for Nonferrous MetalsBeijing 100088China College of Materials Science and Engineering Liaocheng UniversityLiaocheng 252059China

In order to increase both the interfacial strength and interphase region strength between TiNi wires and shape memory epoxy,a novel interface structure including aminated CNTs was *** morphology shows that after electroplating and etching,continuous and homogeneous concave-convex layers form on the surface of astreated TiNi wires,meanwhile aminated CNTs were planted on the surface which could react with shape memory epoxy at the interface *** interfacial shear strength increases first with the CNT content rising but then a dramatic drop happens,and the maximum is obtained at CNT content of 0.6 g·L^(-1),which is about twice the result of acid etching TiNi wires.

关键词： Interfacial strength Interface structure Carbon nanotube Shape memory material Composite

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Prescribed Performance Filtering for Generation of Smooth Reference Trajectory 4

Prescribed Performance Filtering for Generation of Smooth Re...

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4th International Conference on Industrial Artificial Intelligence, IAI 2022

作者： Ding, Wei Zhang, Jin-Xi Changshu Institute of Technology Faculty of Electrical Engineering and Automation Changshu China Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Shenyang China

ISBN: (数字)9781665451208

ISBN: (纸本)9781665451208

This paper is concerned with the problem of generating smooth reference trajectories by filtering, for backstepping control designs for nonlinear systems. To solve this problem, a prescribed performance filtering approach is proposed. Our filter is driven by an input signal which is generated recursively. In each design step, a barrier function is employed to confine the filtering error within the predefined bound. In this way, the filtered reference is not only smooth but also approximate the original reference with any high accuracy. The simulation results on the tracking control of a Van der Pol system illustrate the effectiveness and superiority of our approach. © 2022 IEEE.

关键词： Navigation

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Robust Dynamic Positioning of Marine Surface Vessels Under Denial of Service Attacks 4

Robust Dynamic Positioning of Marine Surface Vessels Under D...

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4th International Conference on Data-Driven Optimization of Complex Systems, DOCS 2022

ISBN: (数字)9781665459822

ISBN: (纸本)9781665459822

This paper is concerned with the dynamic positioning problem for a class of marine surface vessels (MSVs) with model uncertainties and environmental disturbances, possibly subject to denial of service (DoS) attacks. To solve this problem, a novel robust control approach is proposed, consisting of a constrained controller and an integration compensator. The former is used to confine the internal errors within the predefined sets, against the model uncertainties and disturbances. The latter works during the DoS attacks to reconstruct the position information. In this way, the satisfactory dynamic positioning performance of the MSVs is guaranteed. Moreover, the control simplicity is preserved, i.e., there is no need to employ specific tools to approximate the model uncertainties, to estimate the disturbances, or to observe the system state. The simulation results on Cybership II illustrate the effectiveness of the proposed control approach. © 2022 IEEE.

关键词： Robust control

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Construction of Active Cs and Zr Sites for Selective Production of Methyl Methacrylate on Cs/Zr/Sio2 Catalyst

SSRN

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SSRN 2025年

作者： Yan, Tingting Deng, Senlin Wang, Gang Li, Jie Chang, Wei Zhang, Guoliang Li, Chunshan School of Chemical Engineering & Technology China University of Mining and Technology Jiangsu221116 China State Key Laboratory of Mesoscience and Engineering CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Solid-State Battery and Energy Storage Process Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Longzihu New Energy Laboratory Henan University Zhengzhou450046 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Zhengzhou450046 China

Acid-base bifunctional Cs-Zr supported SiO2 exhibit high catalytic performance on aldol condensation of methyl propionate (MP) and formaldehyde (FA) toward methyl acrylate (MMA). However, the effect of structural configuration of surface active sites on the formation rate and selectivity of MMA remains unclear. In this study, a surface engineering strategy was proposed to directionally induce the formation of catalytically active centers. Comprehensive characterizations were performed to identify the structural configuration of surface active Cs and Zr sites and their influence on MMA production in combination with catalytic evaluation. It was discovered that the increased density of isolated hydroxyl groups (≡Si-OH) on SiO2 support after calcination treatment promoted the formation of well-defined Si-O-Zr and Si-O-Cs structures, corresponding to the medium strong acid and weak base sites. The acid-base properties and their balance of as-prepared Cs/Zr/SiO2 catalyst could be controllably modulated by the surface hydroxyl density and Cs (Zr) loading. These highly dispersed Cs and Zr species generated through the strong interaction with hydroxyl groups facilitated the production of MMA while suppressed the undesired MAL. Consequentially, the formation rate and selectivity of MMA could reach up to 0.91 mmol/h/gCat and 94.3% on the optimal 1.5Cs/0.25Zr/SiO2. Further mechanistic studies using in situ DRIFT revealed the catalytic pathway toward MMA and MAL, confirming the activation of MP was the kinetic-relevant step. © 2025, The Authors. All rights reserved.

关键词： Silicon compounds

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A Fiber Temperature Sensor Based on Self-phase Modulation Effect in a Tapered Single-mode Optical Fiber

A Fiber Temperature Sensor Based on Self-phase Modulation Ef...

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Frontiers in Optics + Laser Science 2023, FiO, LS 203: Part of Frontiers in Optics + Laser Science 2023

作者： Cheng, Tonglei Chen, Xiaoyu Suzuki, Takenobu Ohishi, Yasutake State Key Laboratory of Synthetical Automation for Process Industries College of Information Science and Engineering Northeastern University Shenyang110819 China Toyota Technological Institute 2-12-1 Hisakata Tempaku Nagoya468-8511 Japan

Drawing on the effect of self-phase modulation (SPM), a fiber-based temperature sensor is presented in this work by using a polydimethylsiloxane-coated single-mode fiber (SMF) with a tapered structure. © Optica P... 详细信息

ISBN: (纸本)9781957171296

关键词： Self phase modulation

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Wet oxidation of NO with NaClO2 in alkaline conditions: effects of acidic components in flue gas

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Environmental Research 2025年 278卷 121722页

作者： Wang, Huasheng Deng, Shuang Hu, Hongyun Fang, Can Luo, Guangqian Wang, Ze Li, Songgeng State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing100012 China State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Coal Combustion School of Energy and Power Engineering Huazhong University of Science and Technology Wuhan430074 China

Excessive ClO2 tends to be produced and escape, causing secondary pollution when wet oxidation of NO with NaClO2 is conducted under acidic conditions. NaClO2 alkaline oxidation has accordingly received a wide attention. In this work, NaClO2 alkaline oxidation of NO has been systematically studied in a self-built spray tower. Focus has been placed on the effects of acidic components contained in flue gas such as CO2, HCl and SO2. ClO2 and HClO2 are considered more effective for NO oxidation, which tend to be produced in an acidic environment. HCO3− has a relatively higher hydrolysis coefficient than ClO2−, leading to more HClO2 formation. Similarity is found with HCl although the effect is not as significant as CO2 due to its low concentration in flue gas. SO2 exhibits a negative effect on NO removal since HClO2 can be consumed by SO2. Nearly 100 % NO removal efficiency can be achieved although there is an initial time delay necessary for the neutralization of alkaline environment. A similar performance has been observed for HCl. On the contrary, SO2 exhibits a negative effect on NO removal due to the competition with NO in the consumption of NaClO2. Additives such as NaClO and CTAC were also used to enhance NaClO2 alkaline oxidation performance. Interesting to note that CTAC can nearly eliminate the time delay by intensifying the gas-liquid mass transfer. © 2025 Elsevier Inc.

关键词： Diffusion in solids

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