CN107098384A - One kind is based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control - Google Patents

One kind is based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control Download PDF

Info

Publication number
CN107098384A
CN107098384A CN201710219349.8A CN201710219349A CN107098384A CN 107098384 A CN107098384 A CN 107098384A CN 201710219349 A CN201710219349 A CN 201710219349A CN 107098384 A CN107098384 A CN 107098384A
Authority
CN
China
Prior art keywords
light
operated
twin crystal
micro particles
crystal phase
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.)
Granted
Application number
CN201710219349.8A
Other languages
Chinese (zh)
Other versions
CN107098384B (en
Inventor
牟方志
张健华
官建国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Technology WUT
Original Assignee
Wuhan University of Technology WUT
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan University of Technology WUT filed Critical Wuhan University of Technology WUT
Priority to CN201710219349.8A priority Critical patent/CN107098384B/en
Publication of CN107098384A publication Critical patent/CN107098384A/en
Application granted granted Critical
Publication of CN107098384B publication Critical patent/CN107098384B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B81MICROSTRUCTURAL TECHNOLOGY
    • B81BMICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B7/00Microstructural systems; Auxiliary parts of microstructural devices or systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00Compounds of titanium
    • C01G23/04Oxides; Hydroxides
    • C01G23/047Titanium dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B81MICROSTRUCTURAL TECHNOLOGY
    • B81BMICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
    • B81B2201/00Specific applications of microelectromechanical systems
    • B81B2201/03Microengines and actuators
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/70Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72Crystal-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
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/04Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM

Abstract

TiO is based on the invention discloses one kind2The light-operated micron motor of twin crystal phase micro particles and its preparation and control.Profile is spherical in 0.7 1.5 μm;Its thing phase composition includes two kinds of crystalline phases of anatase and rutile, and two kinds of crystalline phases are in non-uniform Distribution, and grain size is in the range of 63 645nm;By TiO2Twin crystal phase micro particles are scattered in hydrogen peroxide solution, and light induced electron and hole can be separated in hetero-junctions under illumination condition, are occurred asymmetric redox reaction in two kinds of grain surfaces of anatase and rutile, are realized the self-driven of particle.The present invention can make electronics and hole occur redox reaction on the surface of each self enrichment respectively according to the anatase energy gap different with Rutile Type, final to realize from electrophoresis motion.Meanwhile, this micron of motor has simple in construction, it is easy to prepare, and prepares the low advantage of cost.

Description

One kind is based on TiO2The light-operated micron motors of twin crystal phase micro particles and its prepare and Control
Technical field
The invention belongs to micro-nano motor technical field, it is related to a kind of based on TiO2The light-operated micron of twin crystal phase micro particles Motor.
Background technology
Micro-nano motor is important component in micro-nano machine, may be in liquid because their unique kinetic characteristics Loading, transport and the release function of goods are completed in body medium, various complicated tasks can be so completed, for example:Medicine is transported The separating of defeated, protein and cell, micro- operation and environmental improvement etc. (Chem.Rev.2014,114,6285;ACS Applied Materials&Interfaces 2014,6,9897;Nano Letter 2007,5;Nanoscale 2013,5(11): 4696).The essence of self-driven micro-nano motor driving is one asymmetric field of structure, breaks its stress by asymmetric field Balance, makes micro-nano motor produce motion.The mentality of designing of current micro-nano motor is broadly divided into two classes, and a class is by will be micro- Nano-motor is configured to asymmetrical pattern or structure (Small 2015,11,2564 in itself;Adv.Funct.Mater.2015, 25(39):6173), another kind of is by applying asymmetric outfield, so as to realize the foundation of local asymmetry chemically or physically field (AdvMater2017,29,DOI:10.1002/adma.201603374.), to reach the purpose of driving.Therefore, it is existing micro- Or nano-motor is with complicated unsymmetric structure (such as two-sided refreshing structure, multilayer tubular structures or can-like structure), costliness Material composition or complexity preparation process, or needing specific complicated outfield, this seriously inhibits the big of micro-nano motor Area is prepared and applied.So, preparing has motion controllable, and simple structure, the micron without specific complicated outfield driving Motor is one of this area urgent problem to be solved.
The content of the invention
Present invention aims at providing, a kind of motion is controllable, and simple structure, the micron without specific complicated outfield driving Motor, and it is easily prepared, prepare cost low.
It is as follows using technical scheme to reach above-mentioned purpose:
Based on TiO2The light-operated micron motor of twin crystal phase micro particles, profile is spherical in 0.7-1.5 μm;Its thing phase composition bag Containing two kinds of crystalline phases of anatase and rutile, two kinds of crystalline phases are in non-uniform Distribution, and grain size is in the range of 63-645nm;By TiO2 Twin crystal phase micro particles are scattered in hydrogen peroxide solution, and light induced electron and hole can be separated in hetero-junctions under illumination condition, Occur asymmetric redox reaction in two kinds of grain surfaces of anatase and rutile, realize the self-driven of particle.
The preparation method of above-mentioned light-operated micron motor, comprises the following steps:
NaCl solution, ethanol and butyl titanate are mixed, 22-26h is stood after stirring 10-30min, collects white heavy Form sediment;
Supernatant will be removed after solution centrifugal containing white precipitate, white powder is obtained after drying, by white powder 90-150min is calcined at end under the conditions of 600-700 DEG C, that is, obtains being based on TiO2The light-operated micron motor of twin crystal phase micro particles.
By such scheme, NaCl solution is the 0.1mM NaCl aqueous solution, and it is by volume with ethanol and butyl titanate 1:250:4.25。
The control method of above-mentioned light-operated micron motor, comprises the following steps:
By TiO2Twin crystal phase micro particles are scattered in hydrogen peroxide solution, and TiO is radiated at using light source2Twin crystal phase micron grain On son, light induced electron and hole can be separated in hetero-junctions under illumination condition, in two kinds of grain surfaces of anatase and rutile The asymmetric redox reaction of generation, realizes the self-driven of particle.
By such scheme, by the control of the intensity of light source or hydrogen peroxide solution concentration, TiO is realized2The mutually spherical micron of twin crystal The control of Particles Moving speed.
By such scheme, the light source is light of the wavelength in below 400nm.
By such scheme, the angle of the light source and horizontal plane normal is θ, and 0 °≤θ<90°.
By such scheme, the light source output power P is 0.06-1W.
By such scheme, the hydrogen peroxide solution concentration is more than 0.1wt%.
Movement mechanism of the present invention is characterised by the band structure of two kinds of different crystalline phase matchings, under light illumination, light induced electron-sky Cave in two-phase hetero-junctions to being separated, and light induced electron and hole are enriched in two kinds of crystalline phases respectively, are participated in respectively in particle The photocatalysis Decomposition H that surface occurs2O2Redox reaction.Because both crystalline phases are in particle surface skewness, photocatalysis Redox reaction shows asymmetry, so as to form H in particle both sides+Concentration gradient, resulting internal field drives Dynamic originally powered micro particles are produced from electrophoresis motion.
The beneficial effects of the invention are as follows:
Obtain a kind of based on TiO2The light-operated micron motor of twin crystal phase micro particles, this micron of motor has structure letter It is single, it is easy to prepare, prepare the low advantage of cost.
The present invention can make electronics and hole respectively respective rich according to the anatase energy gap different with Rutile Type Redox reaction occurs for the surface of collection, final to realize from electrophoresis motion.
Brief description of the drawings
Fig. 1:The scanning electron microscope (SEM) photograph and XRD diffraction patterns of the gained titanium dioxide micrometer particle of embodiment 1.
Fig. 2:The transmission electron microscope picture of the gained titanium dioxide micrometer particle of embodiment 1.
Fig. 3:Movement locus figure in the gained TiO 2 particles 2s of embodiment 1.
Fig. 4:Lighting angle schematic diagram.
Fig. 5:Mean motion speed of the gained titanium dioxide micrometer particle of embodiment 1 under the effect of different hydrogen peroxide concentrations becomes Change.
Fig. 6:The gained titanium dioxide micrometer particle of embodiment 1 mean motion speed under the effect of different ultraviolet lighting intensity Change.
Fig. 7:The identical titanium dioxide micrometer particle of the gained of embodiment 1 is in continuous polishing and stops the movement locus under light.
Fig. 8:Polishing and the average speed stopped between the photophase are analyzed.
Fig. 9:Polishing and the mean square displacement analysis for stopping particle in the case of light.
Embodiment
Following examples further explain technical scheme, but not as limiting the scope of the invention.
Embodiment 1
The preparation method of twin crystal phase spherical tio2 micro particles:
By 0.1mM NaCl solutions, ethanol and butyl titanate sequentially with volume ratio 1:250:4.25 ratio is mixed Close, 24h is stood after stirring 18min, collect white precipitate, this white precipitate is uncrystallized TiO2Microballoon;
Non- crystalline titania microsphere powder is placed in Muffle furnace, calcining heat is set as 650 DEG C, calcination time setting For 120min, you can obtain the twin crystal phase titanic oxide micro particles containing anatase and Rutile Type simultaneously.
Embodiment 2
The preparation method of twin crystal phase spherical tio2 micro particles:
By 0.1mM NaCl solutions, ethanol and butyl titanate sequentially with volume ratio 1:250:4.25 ratio is mixed Close, 26h is stood after stirring 10min, collect white precipitate, this white precipitate is uncrystallized TiO2Microballoon;
Non- crystalline titania microsphere powder is placed in Muffle furnace, calcining heat is set as 600 DEG C, calcination time setting For 150min, you can obtain the twin crystal phase titanic oxide micro particles containing anatase and Rutile Type simultaneously.
Embodiment 3
The preparation method of twin crystal phase spherical tio2 micro particles:
By 0.1mM NaCl solutions, ethanol and butyl titanate sequentially with volume ratio 1:250:4.25 ratio is mixed Close, 24h is stood after stirring 20min, collect white precipitate, this white precipitate is uncrystallized TiO2Microballoon;
Non- crystalline titania microsphere powder is placed in Muffle furnace, calcining heat is set as 650 DEG C, calcination time setting For 120min, you can obtain the twin crystal phase titanic oxide micro particles containing anatase and Rutile Type simultaneously.
Embodiment 4
The preparation method of twin crystal phase spherical tio2 micro particles:
By 0.1mM NaCl solutions, ethanol and butyl titanate sequentially with volume ratio 1:250:4.25 ratio is mixed Close, 22h is stood after stirring 10min, collect white precipitate, this white precipitate is uncrystallized TiO2Microballoon;
Non- crystalline titania microsphere powder is placed in Muffle furnace, calcining heat is set as 700 DEG C, calcination time setting For 90min, you can obtain the twin crystal phase titanic oxide micro particles containing anatase and Rutile Type simultaneously.
Utilize SEM (SEM, S-4800, Hitachi Co., Ltd., Japan) and X-ray diffraction analysis Instrument (XRD Bruker D8Advance X-ray diffractometer) enters to the gained titanium dioxide micrometer particle of embodiment 1 Row microstructure is characterized and mutually characterized with thing, as a result as shown in Figure 1.It is observed that the particle is by two kinds of anatase and rutile Crystalline phase is constituted, and particle diameter is at 1 μm or so, through measure grain colony in 63-645nm.
Using transmission electron microscope (TEM, JEM2100F/JEM2100F) to the gained titanium dioxide micrometer grain of embodiment 1 Son carries out component distributing sign, as a result as shown in Figure 2.It can be seen that the one side (a, b, c, d) in line of demarcation is substantially that anatase contains Amount is dominant, and (e, f, g, h) is that anatase content is dominant on one side in addition, absolutely proves that the particle is made up of two kinds of crystalline phases, and Both crystalline phases are in asymmetric distribution.
The present invention is based on TiO2The light-operated micron motor of twin crystal phase micro particles, its motion control method is as follows:
The gained titanium dioxide micrometer particle of embodiment 1 is dispersed to (0.1- in certain density hydrogen peroxide as fuel 5wt.%), illumination platform is built, the angle for setting light and horizontal plane normal is (0 °≤θ of θ<90 °), set light source output power For P (0.06-1W), you can obtain the random motion of titanium dioxide micrometer particle.
Standard movement experiment is carried out under the conditions of 1wt.% hydrogen peroxide, 1W power output, when gradually converting incident light Angle, θ, after the motion using inverted fluorescence microscope (Leica DMI 3000M) to particle is characterized, through analyzing and processing Obtain particle trajectory figure as shown in Figure 3.Lighting angle schematic diagram is as shown in Figure 4.
Fuel concentration influences on the movement rate of twin crystal phase titanic oxide micro particles:
The gained twin crystal phase titanic oxide micro particles of Example 1 are dispersed in the hydrogen peroxide solution of various concentrations respectively, Intensity is used for 1W/cm2Ultraviolet light particle, obtain particle hydrogen peroxide solution concentration be 0-5wt% when average speed Rate, its mean motion speed increases with the increase of fuel concentration, as shown in Figure 5.
Intensity of illumination influences on the movement rate of twin crystal phase titanic oxide micro particles:
The gained titanium dioxide micrometer particle of Example 1 is dispersed in finite concentration (1wt.%) hydrogen peroxide solution, is adopted With the ultraviolet light particle cluster aggressiveness of varying strength, it is 0-1W/cm to obtain particle colony in ultraviolet ray intensity2Shi Qunti's is flat Equal speed, its mean motion speed increases with the increase of intensity of illumination, as shown in Figure 6.
Angle theta=0 ° of ultraviolet source and horizontal plane is adjusted, use intensity is 1W/cm2The institute of ultraviolet light embodiment 1 Twin crystal phase titanic oxide micro particles are obtained, hydrogen peroxide solution concentration is 1wt.%, the switch of loop control uviol lamp.
The gained titanium dioxide micrometer particle of Example 1.Identical two particles are recorded using inverted fluorescence microscope Movement locus, as shown in Figure 7.During cycling switch ultraviolet light, when there is no light irradiation, particle is only shown simply Brownian movement, and when there is illumination, particle shows the random motion of complexity immediately.This has absolutely proved this micron of motor light sound Answer degree fast, embody light-operated advantage.To its velocity analysis as shown in figure 8, the moment of illumination, the instantaneous average fortune of particle Dynamic speed increases to 11 μm/s from 3.5 μm/s immediately, and it is fast to embody photoresponse again, is also demonstrated by this micron motor very strong Locomitivity.Mean square displacement analysis is as shown in Figure 9.It should be apparent that the degree of Particles Moving under light illumination is remote from figure Much larger than simple Brownian movement, illustrate that light plays a decisive role during particle does complicated random motion.
The present invention relates to the mutually spherical micro particles of twin crystal, light source building method, intensity of illumination and fuel concentration etc. Parameter, interval value can realize the present invention, embodiment numerous to list herein.

Claims (9)

1. based on TiO2The light-operated micron motor of twin crystal phase micro particles, it is characterised in that profile is spherical in 0.7-1.5 μm;Its thing Phase composition includes two kinds of crystalline phases of anatase and rutile, and two kinds of crystalline phases are in non-uniform Distribution, and grain size is in 63-645nm scopes It is interior;By TiO2Twin crystal phase micro particles are scattered in hydrogen peroxide solution, and light induced electron and hole can be in hetero-junctions under illumination condition Separate, occur asymmetric redox reaction in two kinds of grain surfaces of anatase and rutile, realize the self-driven of particle.
2. the preparation method of light-operated micron motor described in claim 1, it is characterised in that comprise the following steps:
NaCl solution, ethanol and butyl titanate are mixed, 22-26h is stood after stirring 10-30min, collects white precipitate;
Supernatant will be removed after solution centrifugal containing white precipitate, white powder is obtained after drying, white powder is existed 90-150min is calcined under the conditions of 600-700 DEG C, that is, obtains being based on TiO2The light-operated micron motor of twin crystal phase micro particles.
3. the preparation method of light-operated micron motor as claimed in claim 2, it is characterised in that NaCl solution is 0.1mM NaCl water Solution, it is 1 by volume with ethanol and butyl titanate:250:4.25.
4. the control method of light-operated micron motor described in claim 1, it is characterised in that comprise the following steps:
By TiO2Twin crystal phase micro particles are scattered in hydrogen peroxide solution, and TiO is radiated at using light source2On twin crystal phase micro particles, Light induced electron and hole can be separated in hetero-junctions under illumination condition, be occurred in two kinds of grain surfaces of anatase and rutile non- Symmetrical redox reaction, realizes the self-driven of particle.
5. the control method of light-operated micron motor as claimed in claim 4, it is characterised in that water-soluble by the intensity of light source or dioxygen The control of liquid concentration, realizes TiO2The control of the mutually spherical micro particles movement rate of twin crystal.
6. the control method of light-operated micron motor as claimed in claim 4, it is characterised in that the light source be wavelength 400nm with Under light.
7. the control method of light-operated micron motor as claimed in claim 4, it is characterised in that the light source and horizontal plane normal Angle is θ, and 0 °≤θ<90°.
8. the control method of light-operated micron motor as claimed in claim 4, it is characterised in that the light source output power is 0.06- 1W。
9. the control method of light-operated micron motor as claimed in claim 4, it is characterised in that the hydrogen peroxide solution concentration is More than 0.1wt%.
CN201710219349.8A 2017-04-06 2017-04-06 One kind being based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control Active CN107098384B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710219349.8A CN107098384B (en) 2017-04-06 2017-04-06 One kind being based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710219349.8A CN107098384B (en) 2017-04-06 2017-04-06 One kind being based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control

Publications (2)

Publication Number Publication Date
CN107098384A true CN107098384A (en) 2017-08-29
CN107098384B CN107098384B (en) 2019-01-22

Family

ID=59675267

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710219349.8A Active CN107098384B (en) 2017-04-06 2017-04-06 One kind being based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control

Country Status (1)

Country Link
CN (1) CN107098384B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110426325A (en) * 2019-07-31 2019-11-08 武汉理工大学 The method for carrying inert particle using micro-nano motor cluster
CN111302393A (en) * 2020-02-27 2020-06-19 复旦大学 Double-shell asymmetric semiconductor material and super-assembly method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011005440A2 (en) * 2009-06-16 2011-01-13 University Of Washington Aggregate particles of titanium dioxide for solar cells
CN102815748A (en) * 2012-08-24 2012-12-12 奇瑞汽车股份有限公司 Titanium dioxide material, preparation method thereof, and dye sensitization solar cell
CN103594694A (en) * 2013-11-28 2014-02-19 扬州大学 Preparation method of spherical lithium titanate ion battery cathode material
CN105618021A (en) * 2015-12-28 2016-06-01 南昌航空大学 H2O2 modified anatase/rutile titanium dioxide nanocrystal composite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011005440A2 (en) * 2009-06-16 2011-01-13 University Of Washington Aggregate particles of titanium dioxide for solar cells
CN102815748A (en) * 2012-08-24 2012-12-12 奇瑞汽车股份有限公司 Titanium dioxide material, preparation method thereof, and dye sensitization solar cell
CN103594694A (en) * 2013-11-28 2014-02-19 扬州大学 Preparation method of spherical lithium titanate ion battery cathode material
CN105618021A (en) * 2015-12-28 2016-06-01 南昌航空大学 H2O2 modified anatase/rutile titanium dioxide nanocrystal composite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110426325A (en) * 2019-07-31 2019-11-08 武汉理工大学 The method for carrying inert particle using micro-nano motor cluster
CN111302393A (en) * 2020-02-27 2020-06-19 复旦大学 Double-shell asymmetric semiconductor material and super-assembly method thereof

Also Published As

Publication number Publication date
CN107098384B (en) 2019-01-22

Similar Documents

Publication Publication Date Title
Yang et al. Conventional and microwave hydrothermal synthesis and application of functional materials: A review
Li et al. Large-scale fabrication of TiO2 hierarchical hollow spheres
Zhao et al. Hollow micro/nanomaterials with multilevel interior structures
Yang et al. Synthetic Architectures of TiO2/H2Ti5O11⊙ H2O, ZnO/H2Ti5O11⊙ H2O, ZnO/TiO2/H2Ti5O11⊙ H2O, and ZnO/TiO2 Nanocomposites
Zhang et al. A bio-inspired inner-motile photocatalyst film: a magnetically actuated artificial cilia photocatalyst
Liu et al. Two-step self-assembly of hierarchically-ordered nanostructures
Mao et al. Selective synthesis and luminescence properties of self-assembled SrMoO4 superstructures via a facile sonochemical route
Soares et al. The controlled synthesis of complex hollow nanostructures and prospective applications
CN103120920B (en) Preparation method of nest-like core-shell-structure Ag@mTiO2 nano composite material
Wang et al. Self-organization of layered inorganic membranes in microfluidic devices
CN107098384B (en) One kind being based on TiO2The light-operated micron motor of twin crystal phase micro particles and its preparation and control
Truong et al. Controlled synthesis of titania using water-soluble titanium complexes: a review
CN101333002A (en) Titanium dioxide nanometer powder with special appearance and method for preparing same
Dong et al. Hydrothermal fabrication of N-doped (BiO) 2CO3: Structural and morphological influence on the visible light photocatalytic activity
Gao et al. Fabrication of hierarchically structured rutile TiO2 nanorods on mica particles and their superhydrophilic coating without UV irridiation
CN104843779A (en) Hollow spherical rutile titanium dioxide mesocrystal and preparation method thereof
CN105883910B (en) A kind of perovskite SrTiO3The preparation method and product of porous nano particle
Wang et al. Tuning the morphological structure and photocatalytic activity of nitrogen-doped (BiO) 2CO3 by the hydrothermal temperature
Eslami et al. Hydrothermal synthesis and characterization of TiO2-derived nanotubes for biomedical applications
Jiang et al. A simple H2O2-assisted route to hollow TiO2 structures with different crystal structures and morphologies
Jiang et al. Atomic layer deposition of Pt nanoparticles for microengine with promoted catalytic motion
CN106830069B (en) A kind of flower-shaped mesoporous TiO 2 hierarchy and preparation method thereof
Sarkar Nanostructured ceramics: characterization and analysis
Devi et al. Effect of pH on synthesis of single-phase titania (TiO2) nanoparticles and its characterization
Hu et al. Preparation of inorganic hollow spheres based on different methods

Legal Events

Date Code Title Description
PB01 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