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Sn基双配体金属有机骨架光催化性能与机理研究

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现代化工 2025年第1期45卷 178-183页

作者：杨智程岳琳王梦菲廉静罗晓刘艳芳河北科技大学环境科学与工程学院河北省污染防治生物技术重点实验室河北石家庄050000

以对苯二甲酸(PTA)和二甲基咪唑(2-MI)为竞争配体,采用溶剂热法制备了新型Sn基双配体金属有机骨架光催化剂(Sn-PTA-MI)。利用XRD、SEM、FT-IR、DRS和电化学测试对制备的光催化剂进行形貌、结构表征以及能带分析。以阳离子型染料罗丹明B(... 详细信息

以对苯二甲酸(PTA)和二甲基咪唑(2-MI)为竞争配体,采用溶剂热法制备了新型Sn基双配体金属有机骨架光催化剂(Sn-PTA-MI)。利用XRD、SEM、FT-IR、DRS和电化学测试对制备的光催化剂进行形貌、结构表征以及能带分析。以阳离子型染料罗丹明B(Rh B)为目标污染物,考察了不同因素对光催化剂活性的影响。结果表明,当PTA和2-MI的投加摩尔比为2∶3、催化剂投加质量浓度为1.50 g/L时,光催化40 min后Rh B的去除率达到99%以上,并且反应受pH影响较小。参与催化降解反应的主要活性组分为·O_(2)^(-),其次是h^(+)。

关键词：光催化染料废水双配体金属有机骨架罗丹明B

Thermal Properties of Poly（vinyl chloride-co-vinyl acetate-co-2-hydroxypropyl acrylate）（PVVH） Polymer and Its Application in ZnO Based Nanogenerators ：

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Chinese Physics Letters 2011年第1期28卷 164-166页

作者： ZHANG Lei yang Jun-He WANG Xian-Ying HE Xing ZHAO Bin TANG zhi-Hong yang Guang-zhi QIU Uan-Xun School of Materials Science and Engineering University of Shanghai for Science and Technology Shanghai 200093

A novel piezoelectricity based nano energy conversion device using vertically aligned ZnO nanowires/PVVH matrix as the working unit is proposed. Thermal energy is converted to electricity via the interaction of the PVVH polymer and ZnO nanowires. The thermal properties of PVVH ave studied using Raman spectroscopy under different temperatures. The results show that the structure of PVVH is sensitive to fluctuations of the environmental temperatures. With the increasing temperature, PVVH tends to be crystallized and stress can be developed inside the polymer. The stress is responsible for the deformation and voltage generation of the ZnO nanowires.

关键词： Soft matter liquids and polymers Condensed matter: electrical magnetic and optical Condensed matter: structural mechanical & thermal Nanoscale science and low-D systems

Vertical-well-assisted SAGD dilation process in heterogeneous super-heavy oil reservoirs:Numerical simulations

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Underground Space 2021年第6期6卷 603-618页

作者： zhi yang Xingge Sun Chihui Luo Bin Xu Baohong yang Biao Li China National Petroleum Corporation Xinjiang Oil FieldKaramay 834000XinjiangChina Origin Geomechanics Inc. CalgaryAlberta T3H 0X6Canada Department of Building Civil&Environmental EngineeringConcordia UniversityMontrealQuebec H3G 1M8Canada

PetroChina’s Karamay heavy oil reservoirs mostly comprise Jurassic deposits of braided fluvial facies that have a low porosity,extremely high bitumen viscosity,and strong heterogeneities within the ***-assisted gravity drainage(SAGD)dilation start-up has been proven an efficient reservoir geomechanical stimulation method as it shortens the steam circulation time,reduces steam usage,and increases the oil production *** method worked well on relatively good-quality oil sand ***,for reservoirs with heterogeneous reservoir properties along the SAGD well,field well production data indicated the presence of non-uniform steam chambers in post-dilation SAGD *** dilation methods,such as vertical-well-assisted SAGD dilation(VW-SAGD-Dilation)are have been used,and field pilot tests have yielded promising *** reservoir stimulation process utilizes one or more vertical wells beside the SAGD well to initiate the formation of dilation zones that connect to the dilation zone formed during the conventional SAGD dilation *** with the normal SAGD dilation start-up,this composite dilation process creates a uniform dilation zone along the SAGD well,thus improving the thermal conformance and well *** vertical well and SAGD well are connected by this composite dilation zone,which enables the combined use of the SAGD process and cyclic steam stimulation *** paper presents our understanding and numerical case studies of this enhanced dilation *** well production data from the postdilation wells were positive(uniform steam chamber growth and higher oil rate),which highlights the promising potential of using geomechanical dilation as a reservoir stimulation method to create a large stimulated reservoir volume in heterogeneous super-heavy oil reservoirs.

关键词： Geomechanics Dilation SAGD Heterogeneous oil sand reservoir Stimulated reservoir volume

A New Design of Magnetic Fluid Seal for Liquids

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Journal of China University of Mining and Technology 2005年第4期15卷 366-369页

作者： LIU Tong-gang yang zhi-yi School of Mechanical and Electrical Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Direct contract between the sealed liquid and the magnetic fluid in a dynamic system under magnetic field may lead to an unstable interface, consequently, break down the seal. Aiming at this problem, a new magnetic fluid seal (MFS) was developed. In this new MFS, a soft iron bushing with high permeability was introduced on the shaft and nonferrous shields were installed beside the bushing and the pole pieces. The parameters of the bushing and the shields were optimized in a seal simulation facility The results show that the bushing with a thickness of 7 mm and shields with a width of 8 mm are best for sealing a shaft 20 mm in diameter. The MFS designed based on the optimum parameters shows good performance and long life span for sealing lubricating oil.

关键词： magnetic fluid design sealing liquid parameter optimization

Characteristics of a magnetic fluid seal and its motion in an axial variable seal gap

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Journal of China University of Mining and Technology 2008年第4期18卷 634-636页

作者： QIAN Ji-guo yang zhi-yi School of Mechanical and Electronic Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221116 China

With suitable assumptions a hydrodynamic model for the magnetic fluid motion in an axial variable gap seal was con- structed, and the solution to the equations of the model was deduced. The characteristics of a magnetic fluid seal and its motion, including the speed and pressure distribution, and the seal capacity of a magnetic fluid rotating seal were systematically described. The factors affecting seal capacity and ways to improve seal capacity based on the hydrodynamic model are discussed. The basic condition for dynamic seal availability is presented. The rotating speed and radius of the shafts should be decreased. The work can provide proof of a seal design or suggest ways to improve the seal capacity of magnetic fluid seals.

关键词： characteristics hydrodynamic model magnetic fluid seal axial variable gap

Minimum barrier distance based tracking via spatio-temporal context learning

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Optoelectronics Letters 2019年第1期15卷 75-80页

作者： yang zhi-yuan WU Bin The State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University

We propose an efficient and robust tracking method based on minimum barrier distance (MBD) and spatio-temporal context (STC) learning. It is robust to noise and blur, and can be evaluated approximately through a Dijkstra-like algorithm, leading to fast computation. We adopt the MBD transform to measure the weights of context pixels, and formulate the spatio-temporal relationship between the object and its surrounding region based on a Bayesian framework to estimate the most likely location of the target. A bounded scale update model is proposed to estimate the size of the object. The whole proposed method runs at nearly 160 frames per second (FPS) on an i5 machine. Extensive experimental results show it has comparable or better comprehensive performance than the original STC and some other leading methods.

关键词： Minimum barrier tracking context learning

Clear cell sarcoma of soft tissue in pleural cavity: A case report

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World Journal of Clinical Cases 2019年第19期7卷 3126-3131页

作者： yang-Tian Chen zhi yang Huan Li Chen-Hui Ni Department of Thoracic Surgery The Affiliated People Hospital of Fujian University of Traditional Chinese MedicineFuzhou 350004Fujian ProvinceChina Department of Pathology The Affiliated People Hospital of Fujian University of Traditional Chinese MedicineFuzhou 350004Fujian ProvinceChina

BACKGROUND Clear cell sarcoma(CCS)of soft tissue is a rare malignant soft tissue sarcoma usually reported to locate at distal end of extremities and rarely at ***,we report a case of CCS in pleural *** SUMMARY A 31-year-old male was admitted for an uncertain mass in left pleural cavity in routine physical examination without any symptoms.A VATS surgery was performed to remove the *** pathological finding displayed a cystic mass with 6.5 cm at the longest diameter,dark red in section and cysts could be found locally.A strong expression of S-100,HMB45 and Vimentin was detected in immunohistochemical staining,which was inclined to the diagnosis of the CCS of soft *** patient refused chemotherapy,radiotherapy and targeted therapy because of the personal financial ***-up computed tomography scans were done at the 90th postoperative day and the 180th postoperative day,and no obvious sign of recurrence was found till *** CCS of soft tissue also can be found in pleural cavity although in an extremely rare *** resection is useful to improve the prognosis.

关键词： Sarcoma Clear cell sarcoma Clear cell sarcoma of soft tissue Treatment Case report

Thermal and Mechanical Properties of Graphene-Titanium Composites Synthesized by Microwave Sintering

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Acta Metallurgica Sinica(English Letters) 2016年第8期29卷 707-713页

作者： Wen-zhi yang Wei-Ming Huang zhi-Feng Wang Fu-Jun Shang Wei Huang Bao-Yu Zhang Ningbo Branch of China Academy of Ordnance Science College of Mechanical Engineering and Mechanics Ningbo University

The x wt%graphene-Ti composites（x = 0,0.2,0.3 and 0.4） were obtained using the powder metallurgy *** X-ray diffraction results demonstrated that the peak intensity of graphene increased monotonically with increasing graphene ***,the number of grain boundary and interface between graphene and matrix increased as graphene increased,which led to a sharp rise of thermal *** thermal conductivity and specific heat capacity of composites initially decreased drastically with addition of graphene,but then increased with increasing graphene content from 0.2 to 0.4 wt%.This phenomenon was connected with the graphene content and the characteristics of Ti matrix（pores,grain boundary and interface between graphene and matrix）.The variation of the compressive strength of composites was attributed to the interaction effects of the average grain size of the Ti matrix（d_m） and the volume fraction（V_f） and aspect ratio（A） of graphene.

关键词： Graphene Metal-matrix composites Thermal properties Compressive strength

The electrochemical behavior of N-n-undecy1-N＇-（sodium-p- amino-benzenesulfonate） thiourea and its interaction with bovine serum albumin

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Chinese Chemical Letters 2008年第5期19卷 581-584页

作者： Hong Xia Luo yang Du zhi Xin Guo Department of Chemistry Renmin University of China Beijing 100872 China

In pH 5.5 phosphate buffer solution, N-n-undecyl-N＇-（sodium-p-amino-benzenesulfonate） thiourea （UPT） produced a pair of redox peaks on the bare glassy carbon electrode. At the multi-walled carbon nanotube （MWNT） modified electrode, the electrochemical behavior of UPT enhanced greatly. In the presence of bovine serum albumin （BSA）, the peak currents of UPT decreased linearly due to the formation of a super-molecular complex. This method was successfully applied to the determination of BSA in a bovine serum sample.

关键词： N-n-Undecyl-N'-(sodium-p-amino-benzenesulfonate) thiourea Carbon nanotube Electrocatalysis Bovine serum albumin