CN106495219B - 激光诱导制备KNb3O8纳米线的方法 - Google Patents
激光诱导制备KNb3O8纳米线的方法 Download PDFInfo
- Publication number
- CN106495219B CN106495219B CN201610933225.1A CN201610933225A CN106495219B CN 106495219 B CN106495219 B CN 106495219B CN 201610933225 A CN201610933225 A CN 201610933225A CN 106495219 B CN106495219 B CN 106495219B
- Authority
- CN
- China
- Prior art keywords
- knb
- laser
- substrate
- solution
- potassium hydroxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002070 nanowire Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000002086 nanomaterial Substances 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052737 gold Inorganic materials 0.000 claims abstract description 4
- 239000004065 semiconductor Substances 0.000 claims abstract description 3
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000003760 magnetic stirring Methods 0.000 claims description 12
- 239000010931 gold Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010955 niobium Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000005424 photoluminescence Methods 0.000 abstract description 2
- 229910052719 titanium Inorganic materials 0.000 abstract description 2
- 238000012512 characterization method Methods 0.000 abstract 1
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 abstract 1
- UKDIAJWKFXFVFG-UHFFFAOYSA-N potassium;oxido(dioxo)niobium Chemical compound [K+].[O-][Nb](=O)=O UKDIAJWKFXFVFG-UHFFFAOYSA-N 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 239000003637 basic solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 239000000376 reactant Substances 0.000 description 3
- 241000931526 Acer campestre Species 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000002371 ultraviolet--visible spectrum Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000036301 sexual development Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G33/00—Compounds of niobium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/16—Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
激光诱导制备KNb3O8纳米线的方法属于新型功能材料技术领域。本发明使用405nm的半导体激光器，实验前在石英玻璃上镀Ti和Au，作为铌酸钾纳米线生长的衬底。向氢氧化钾溶液中加入Nb2O5粉末，使K：Nb的比例为50:1，并用磁力搅拌器搅拌15min，使Nb2O5充分溶解；激光照射时间分别为4‑12min。通过XRD、SEM等技术手段对微结构表征，表明产物为最强衍射峰在(110)晶面上的KNb3O8一维纳米线。通过紫外‑可见吸收和光致发光性能的测试，表明KNb3O8的带隙为2.98eV，具有潜在的蓝光发光特性。本发明通过激光照射时间的控制，生成长度，粗细不同的一维纳米结构，首次利用激光生成一维线状的KNb3O8纳米结构。
Description
技术领域
激光诱导生成纳米线的方法，属于新型功能材料的制备技术领域。
背景技术
激光诱导在衬底上制备纳米线的方法，是新颖的制备一维纳米结构的方法，其产物的形貌取决于激光照射的时间、激光功率、衬底表面催化剂的厚度和反应物浓度等多个因素的控制。与一些传统制备手段相比，具有许多优点，如样品制备时间较短、所制备出的纳米线结构长径比较大、形貌丰富多样等。
目前对KNb3O8纳米结构材料的制备主要有固相烧结法、熔盐法、高压水热法。但是用激光诱导方法制备KNb3O8纳米结构的研究和报道几乎还是空白。
本发明在适当的反应物配比及激光功率条件下，通过反应时间的控制，激光水热技术生成了KNb3O8一维纳米结构；获得的纳米线长度可达70μm，长径比可达50；并对其进行紫外-可见光谱测试和光致发光(PL)测试发现其可以有效的吸收400～475nm波长范围内的光谱。该方法的开拓有利于更简单的制备目标产物及性能研究，推动了新材料制备技术的实质性发展。
发明内容
本发明提供了一种在适当的反应物配比及激光功率条件下，通过反应时间的控制，激光水热技术生成KNb3O8一维纳米结构的方法。
本发明所采用的激光诱导方法，包括以下工艺步骤：
1)将KOH晶体溶解到水中，配置浓度为25mol/L的氢氧化钾溶液；
2)称取的五氧化二铌粉体(Nb2O5)；将称取好的五氧化二铌粉末，加入到已经配好的氢氧化钾溶液中，使K：Nb的摩尔比例为50:1，用磁力搅拌器充分搅拌，使溶液混合均匀；
3)将石英玻璃用酒精超声清洗，再用去离子水洗涤若干次；
4)使用直流溅射方法，在石英衬底上先镀一层厚度为15nm～25nm的Ti；再使用喷金仪镀一层厚度为130nm～140nm的Au，作为KNb3O8纳米线生长的衬底；
5)将制备好的衬底放入一个耐碱容器底部，有金膜的一面朝上。将制备好的溶液倒入小容器中，没过衬底；
6)使用波长为405nm的半导体激光，激光电流为50mA，功率为1.2W，分别照射 4-12min。
7)照射完毕，从溶液中用镊子取出衬底，用去离子水冲洗几次，从衬底的上表面得到KNb3O8一维纳米结构。
本发明的有益效果在于:
本发明利用简单的设备和巧妙的工艺控制，实现了激光水热法制备的KNb3O8一维纳米结构，获得了高长径比、形貌丰富的KNb3O8纳米线。
附图说明
图1a激光照射4min获得的KNb3O8扫描电镜图之一
图1b激光照射4min获得的KNb3O8扫描电镜图之二
图2激光照射6min获得的KNb3O8扫描电镜图
图3激光照射8min获得的KNb3O8扫描电镜图
图4激光照射10min获得的KNb3O8扫描电镜图
图5激光照射12min获得的KNb3O8扫描电镜图
图6激光照射10min获得的KNb3O8纳米线的XRD图
图7激光照射10min获得的KNb3O8紫外-可见光谱图
图8激光照射获得的KNb3O8光致发光(PL)光谱图
具体实施方式
下面通过实施例进一步阐明本发明的实质性特点，但本发明决不仅局限于以下实施例。实施例中所涉及的主要参数的设置如下表所示：
根据激光吸收率公式：ρ为电阻率；λ为激光波长。
钛的电阻率为0.556μΩ·m；金的电阻率为2.4μΩ·m。激光波长为405nm，因此Au的吸收率远远大于Ti的吸收率。
Ti的热膨胀系数为9.41～10.03×10-6/℃；Au的热膨胀系数为14.2×10-6/℃激光照射时，金吸收的热量多，热膨胀系数大，实验时如果不镀Ti作为缓冲层，Au容易脱落。因此选择在石英玻璃衬底上镀Ti膜和Au膜。
实验过程中由于实验仪器的限制，激光电流不能超过60mA，而电流在46mA和55mA时，并没有线状物质生成。而且激光照射时间大于15min时，由于激光能量过大，金膜脱落。照射时间小于4min时，衬底表面没有物质生成。因此实验室采用激光电流55mA，在 4～12min时间内照射。
产物的粉末X射线衍射(XRD)图谱采用的仪器为Bruker D-8 Advance粉末衍射仪(Cu Kα辐射，)；扫描电镜所用仪器为Hitachi S-3500型扫描电子显微镜；紫外-可见光谱仪型号为UV-3101PC；利用FLS980荧光光谱仪测试光致发光性能。
实施例1
称取2.0g(7.5mmol)的五氧化二铌粉体，然后将43.6682 g的KOH晶体溶解到30 mL的水中，配制成25mol/L浓度的氢氧化钾溶液，利用磁力搅拌器使其充分溶解；将称取研磨好的五氧化二铌粉末，加入到已经配好的25mol/L的氢氧化钾碱性溶液中，使用磁力搅拌器充分搅拌，使其充分混合；加入已放入衬底的容器中，用激光照射4 min。实验结束后将衬底从溶液里取出，用去离子水冲洗几次，得到KNb3O8一维纳米结构。
实施例2
称取2.0g(7.5mmol)的五氧化二铌粉体，然后将43.6682 g的KOH晶体溶解到30 mL的水中，配制成25mol/L浓度的氢氧化钾溶液，利用磁力搅拌器使其充分溶解；将称取研磨好的五氧化二铌粉末，加入到已经配好的25mol/L的氢氧化钾碱性溶液中，使用磁力搅拌器充分搅拌，使其充分混合；加入已放入衬底的容器中，用激光照射6 min。实验结束后将衬底从溶液里取出，用去离子水冲洗几次，得到KNb3O8一维纳米结构。实例2与实例1对比，纳米线成针尖状，长度比较长。由于纳米线数量增多，发光强度略高于照射4min 时。
实施例3
称取2.0g(7.5mmol)的五氧化二铌粉体，然后将43.6682g的KOH晶体溶解到30mL的水中，配制成25mol/L浓度的氢氧化钾溶液，利用磁力搅拌器使其充分溶解；将称取研磨好的五氧化二铌粉末，加入到已经配好的25mol/L的氢氧化钾碱性溶液中，使用磁力搅拌器充分搅拌，使其充分混合；加入已放入衬底的容器中，用激光照射8min。实验结束后将衬底从溶液里捞取出，用去离子水冲洗几次，得到KNb3O8一维纳米结构。与实例2对比，纳米线比较分散，并未从团簇中长出，长度更长。纳米线数量更多，发光强度最大。
实施例4
称取2.0g(7.5mmol)的五氧化二铌粉体，然后将43.6682g的KOH晶体溶解到30mL的水中，配制成25mol/L浓度的氢氧化钾溶液，利用磁力搅拌器使其充分溶解；将称取研磨好的五氧化二铌粉末，加入到已经配好的25mol/L的氢氧化钾碱性溶液中，使用磁力搅拌器充分搅拌，使其充分混合；加入已放入衬底的容器中，用激光照射10min。实验结束后将衬底从溶液里取出，用去离子水冲洗几次，得到KNb3O8一维纳米结构。得到纳米线长度达到70μm，从团簇中长出。纳米线长度最长，但由于数量有限，发光强度并不是最高。
实施例5
称取2.0g(7.5mmol)的五氧化二铌粉体，然后将43.6682g的KOH晶体溶解到30mL的水中，配制成25mol/L浓度的氢氧化钾溶液，利用磁力搅拌器使其充分溶解；将称取研磨好的五氧化二铌粉末，加入到已经配好的25mol/L的氢氧化钾碱性溶液中，使用磁力搅拌器充分搅拌，使其充分混合；加入已放入衬底的容器中，用激光分别照射12min。实验结束后将衬底从溶液里取出，用去离子水冲洗几次，得到KNb3O8一维纳米结构。由于温度梯度变小，实施例5中的纳米线长度变短，发光强度较弱。
Claims (1)
1.激光诱导制备KNb3O8纳米线的方法，其特征在于，包括以下工艺步骤：
1)将KOH溶解到去离子水中，配置浓度为25mol/L的氢氧化钾溶液；
2)称取五氧化二铌粉体；将称取好的五氧化二铌粉末，加入到已经配好的氢氧化钾溶液中，使K：Nb的摩尔比例为50:1，用磁力搅拌器充分搅拌，使溶液混合均匀；
3)将石英玻璃，用酒精超声清洗，再用去离子水洗涤若干次；
4)使用直流溅射方法，在清洗干净的石英玻璃上先镀一层厚度为15～20nm的Ti；再使用喷金仪镀一层厚度为130～140nm的Au，作为KNb3O8纳米线生长的衬底；
5)将制备好的衬底平放入一个耐碱容器底部，有金膜的一面朝上；将制备好的溶液倒入小容器中，没过衬底；
6)使用波长为405nm的半导体激光，激光电流为50mA，功率为1.2W，照射4-12min；
7)照射完毕，从溶液中用镊子取出衬底，用去离子水冲洗几次，在衬底的上表面得到KNb3O8一维纳米结构。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933225.1A CN106495219B (zh) | 2016-10-25 | 2016-10-25 | 激光诱导制备KNb3O8纳米线的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610933225.1A CN106495219B (zh) | 2016-10-25 | 2016-10-25 | 激光诱导制备KNb3O8纳米线的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106495219A CN106495219A (zh) | 2017-03-15 |
| CN106495219B true CN106495219B (zh) | 2018-01-12 |
Family
ID=58320038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610933225.1A Expired - Fee Related CN106495219B (zh) | 2016-10-25 | 2016-10-25 | 激光诱导制备KNb3O8纳米线的方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106495219B (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175353B (zh) * | 2020-01-16 | 2021-09-14 | 吉林大学 | 一种利用激光技术制备微纳米线的方法及其应用 |
| CN114256365B (zh) * | 2021-12-28 | 2023-10-24 | 陕西师范大学 | 一种KNb3O8纳米带、制备方法及其深紫外光电探测应用 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0403891A (pt) * | 2004-09-15 | 2006-05-16 | Cbmm Sa | processo de produção de oxalato amoniacal de nióbio, oxalato amoniacal de nióbio e uso do mesmo |
| CN100582016C (zh) * | 2007-10-23 | 2010-01-20 | 浙江大学 | 一种LiNbO3纳米线的制备方法 |
| CN101575215A (zh) * | 2009-06-10 | 2009-11-11 | 桂林理工大学 | 一种铌酸钾粉体的水热合成方法 |
| CN101857272A (zh) * | 2010-06-22 | 2010-10-13 | 浙江大学 | 一种微纳针状结构KNbO3的制备方法 |
| CN102502833B (zh) * | 2011-10-27 | 2014-06-18 | 浙江大学 | 一种微纳结构K3Nb7O19六棱片的制备方法 |
| CN105502498A (zh) * | 2015-12-20 | 2016-04-20 | 北京工业大学 | 一种水热制备金字塔形KNbO3纳米结构的方法 |
-
2016
- 2016-10-25 CN CN201610933225.1A patent/CN106495219B/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106495219A (zh) | 2017-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gao et al. | ZnO-based hollow microspheres: biopolymer-assisted assemblies from ZnO nanorods | |
| Long et al. | High-throughput and tunable synthesis of colloidal CsPbX 3 perovskite nanocrystals in a heterogeneous system by microwave irradiation | |
| Hu et al. | Sonochemical and microwave-assisted synthesis of linked single-crystalline ZnO rods | |
| Ranjbar-Karimi et al. | Sonochemical synthesis, characterization and thermal and optical analysis of CuO nanoparticles | |
| Gupta et al. | Doping-induced room temperature stabilization of metastable β-Ag2WO4 and origin of visible emission in α-and β-Ag2WO4: low temperature photoluminescence studies | |
| Tian et al. | Zinc stannate nanocubes and nanourchins with high photocatalytic activity for methyl orange and 2, 5-DCP degradation | |
| CN101327946B (zh) | 一种具有特殊形貌的微-纳颗粒及其制备方法与应用 | |
| Xu et al. | High-yield synthesis of single-crystalline ZnO hexagonal nanoplates and accounts of their optical and photocatalytic properties | |
| Song et al. | Tumor cell-targeted Zn 3 In 2 S 6 and Ag–Zn–In–S quantum dots for color adjustable luminophores | |
| CN105714377B (zh) | 一种纳米花状wo3薄膜光阳极的制备方法 | |
| CN106495219B (zh) | 激光诱导制备KNb3O8纳米线的方法 | |
| Wang et al. | Controllable preparation of ZnO nanostructure using hydrothermal-electrodeposited method and its properties | |
| CN106986373A (zh) | 一种ZnO纳米棒的制备方法 | |
| Abdullayeva et al. | Zinc oxide and metal halide perovskite nanostructures having tunable morphologies grown by nanosecond laser ablation for light-emitting devices | |
| CN102181283B (zh) | 一种CdS/Cd(OH)2复合纳米线及其制备方法 | |
| CN102990077B (zh) | 一种在氧化物基底上原位生长铋纳米粒子的方法 | |
| CN108545960A (zh) | 一种Y掺杂ZnO纳米棒阵列制备方法 | |
| CN110534597B (zh) | 一种近红外光电探测器及其制备方法 | |
| Kumar et al. | Tailoring the properties of copper nanowires by ion beam irradiation | |
| CN107758726A (zh) | 一种可用于深紫外极弱光探测高纯纳米结构ZnGa2O4的制备方法 | |
| CN110735182A (zh) | 利用溶液自组装制备高荧光零维钙钛矿单晶的方法 | |
| Bhunia et al. | Chemical growth of spherical zinc oxide nanoparticles and their structural, optical properties | |
| CN109943338A (zh) | 一种近红外发光稀土掺杂的硒化铟纳米片制备方法 | |
| Molaei et al. | CdSe/ZnS core–shell QDs: Synthesis and investigating optical properties | |
| Ismail et al. | Laser—synthesised Ag2S nanoparticles in liquid: effect of laser fluence on structural and optical properties |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210129 Address after: Room 1424, Floor 4, Peony Pioneer Building, No. 2 Garden Road, Haidian District, Beijing, 100191 Patentee after: Beijing Zhonglian Technology Service Co.,Ltd. Address before: 100124 No. 100 Chaoyang District Ping Tian Park, Beijing Patentee before: Beijing University of Technology |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210707 Address after: Room 78328, building 3, No. 1800, Panyuan Road, Changxing Town, Chongming District, Shanghai 202150 (Shanghai Taihe Economic Development Zone) Patentee after: Dushi (Shanghai) science and Technology Service Center Address before: Room 1424, Floor 4, Peony Pioneer Building, No. 2 Garden Road, Haidian District, Beijing, 100191 Patentee before: Beijing Zhonglian Technology Service Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 |