CN104630754A - Preparation method of TiO2 quasi-one-dimensional composite material loaded with Ag nano particles - Google Patents

Preparation method of TiO2 quasi-one-dimensional composite material loaded with Ag nano particles Download PDF

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Publication number
CN104630754A
CN104630754A CN201410750277.6A CN201410750277A CN104630754A CN 104630754 A CN104630754 A CN 104630754A CN 201410750277 A CN201410750277 A CN 201410750277A CN 104630754 A CN104630754 A CN 104630754A
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composite material
dimensional composite
quasi
solution
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张立荣
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31—Coating with metals
    • C23C18/42—Coating with noble metals
    • C23C18/44—Coating with noble metals using reducing agents

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

The invention discloses a preparation method of a TiO2 quasi-one-dimensional composite material loaded with Ag nano particles, belongs to the field of preparation of nanocomposites and provides a preparation method of high-load-rate TiO2 quasi-one-dimensional composite material loaded with Ag nano particles. The method comprises the following steps: adding ammonia water to immerse anatase type nanoribbona (TiO2NBs) which serve as raw materials to prepare TiO2NBs which adsorb ammonia molecules, then adding the TiO2NBs into an AgNO3 solution, stirring under the dark condition, then radiating the solution by using an ultraviolet lamp in a radiation distance of 20cm, filtering and washing after stopping radiation, weighing the washed product, adding 0.1g AgNO3, heating until the solution is boiled, adding a sodium citrate solution, reacting, cooling and then filtering and washing to prepare the TiO2 quasi-one-dimensional composite material loaded with Ag nano particles. According to the quasi-one-dimensional composite material prepared by the method, the Ag nanoparticle coverage rate is over 80%.

Description

A kind of load has the Ti0 of Ag nanoparticle 2accurate one-dimensional composite material preparation method
Technical field
The invention belongs to Nano-composite materials field.
Background technology
The surface plasma body resonant vibration characteristic of noble metal nano particles uniqueness makes it in basis and application two, all have very important researching value.Just based on this characteristic, they are just applied to the fields such as biologic medical, biological and chemical sensing and surface-enhanced Raman (SERS) detection.Wherein the factor such as specific inductivity of SERS effect and noble metal size, shape and surrounding medium is relevant.Report that except there being many articles noble metal size and dimension is on except SERS impact, people also create great interest to the SERS effect of the nano composite material that noble metal nano particles and other materials form, such as, Ag nanoparticle (NP) is loaded to Ti0 by people 2(Ag-Ti0 2) its SERS effect of the rear research in surface.It is generally acknowledged, surface plasma is stronger, also larger at the electric field of surface excitation, and corresponding SERS strength of signal is more remarkable.Ti02 is a kind of wide bandgap semiconductor oxide compound, is also the comparatively large and material that imaginary part is less of a kind of real part of relative permittivity, theoretical according to classical electrodynamics: the material that imaginary part is less has larger surface field intensity., when Ag load is at Ti0 2surface is formed
Ag-Ti0 2time, the unbound electron not only on Ag is difficult to lose, and Ti0 2surface field intensity also enhances Ag surface local electric field intensity by strength of electric field superposition, and thus, the surface electrical magnetic field of Ag will strengthen, and final SERS effect is also just more obvious; In addition, the Ag NP of institute's load is more, and the effect of intercoupling between them is also stronger, and same SERS effect is more obvious.
At present, the preparation Ag-TiO reported 2the main method of composite nano materials has electrochemical reducing, liquid phase deposition, photoreduction met hod, sol method, microwave process for synthesizing and the seed law etc., at the Ti0 prepared by these methods 2substantially be nanoparticle or nanotube in nano material, and use Detitanium-ore-type Ti0 2nano belt (NBs) then rarely has report.
Summary of the invention
The object of this invention is to provide a kind of use Detitanium-ore-type Ti0 2nano belt prepares the Ti0 that the load with high capacity rate has Ag nanoparticle 2accurate one-dimensional composite material preparation method.
The present invention is achieved by the following technical programs: a kind of load has the Ti0 of Ag nanoparticle 2accurate one-dimensional composite material preparation method, uses titanium dioxide to prepare anatase titanium dioxide nano belt (Ti0 2nBs), then by Ti0 2nBs joins in 1.0% ammoniacal liquor and soaks 4h, then is washed till neutrality with deionized water, the obtained TiO being adsorbed with amino molecule 2nBs, takes the Ti0 of 10.Og amino molecule absorption 2nBs, is added to 300mlO.2molL -1agNO 3in solution, under lucifuge condition, stir 30min, irradiate 12h with ultraviolet lamp (30W), irradiation distance is 20cm, irradiates after stopping and filtering, with deionized water wash four times, take 2.0g and wash after product, add in 100m1 deionized water, under agitation toward wherein adding 0.1gAgN0 3, be heated to solution boiling, then add 1.Oml15% (massfraction) sodium citrate solution fast, stop heating after reacting 5 min, naturally cooling, filtration washing, obtains the Ti0 that load has Ag nanoparticle 2accurate one-dimensional composite material.
The present invention has following beneficial effect:
The load adopting the method to prepare has the Ti0 of Ag nanoparticle 2accurate one-dimensional composite material, Ti0 2nBs surf zone is covered by Ag nanoparticle, and fraction of coverage is more than 80%.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Specific embodiment: preparation process of the present invention is, uses titanium dioxide to prepare anatase titanium dioxide nano belt (Ti0 2nBs), then by Ti0 2nBs joins in 1.0% ammoniacal liquor and soaks 4h, then is washed till neutrality with deionized water, the obtained TiO being adsorbed with amino molecule 2nBs, takes the Ti0 of 10.Og amino molecule absorption 2nBs, is added to 300mlO.2molL -1agNO 3in solution, under lucifuge condition, stir 30min, irradiate 12h with ultraviolet lamp (30W), irradiation distance is 20cm, irradiates after stopping and filtering, with deionized water wash four times, take 2.0g and wash after product, add in 100m1 deionized water, under agitation toward wherein adding 0.1gAgN0 3, be heated to solution boiling, then add 1.Oml15% (massfraction) sodium citrate solution fast, stop heating after reacting 5 min, naturally cooling, filtration washing, obtains the Ti0 that load has Ag nanoparticle 2accurate one-dimensional composite material.
Carry out EDS test to product, Ag/Ti mol ratio is 0.987, observes its TEM photo, Ti0 2most of region, NBs surface is covered by Ag nanoparticle, and fraction of coverage is more than 80%.
Above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.

Claims (1)

1. a load has the Ti0 of Ag nanoparticle 2accurate one-dimensional composite material preparation method, is characterized in that: use titanium dioxide to prepare anatase titanium dioxide nano belt (Ti0 2nBs), then by Ti0 2nBs joins in 1.0% ammoniacal liquor and soaks 4h, then is washed till neutrality with deionized water, the obtained TiO being adsorbed with amino molecule 2nBs, takes the Ti0 of 10.Og amino molecule absorption 2nBs, is added to 300mlO.2molL -1agNO 3in solution, under lucifuge condition, stir 30min, irradiate 12h with ultraviolet lamp (30W), irradiation distance is 20cm, irradiates after stopping and filtering, with deionized water wash four times, take 2.0g and wash after product, add in 100m1 deionized water, under agitation toward wherein adding 0.1gAgN0 3, be heated to solution boiling, then add 1.Oml15% (massfraction) sodium citrate solution fast, stop heating after reacting 5 min, naturally cooling, filtration washing, obtains the Ti0 that load has Ag nanoparticle 2accurate one-dimensional composite material.
CN201410750277.6A 2014-12-10 2014-12-10 Preparation method of TiO2 quasi-one-dimensional composite material loaded with Ag nano particles Pending CN104630754A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372223A (en) * 2015-10-20 2016-03-02 安徽理工大学 Ag/TiO2 flexible SERS substrate capable of being repeatedly utilized and preparation method thereof
CN109453766A (en) * 2018-11-05 2019-03-12 北京工业大学 A kind of Ag load TiO of atom level dispersion2The preparation method of mesoporous nano belt photochemical catalyst
CN110713816A (en) * 2019-10-29 2020-01-21 恩平市盈嘉丰胶粘制品有限公司 Organosilicon electromagnetic shielding pressure-sensitive adhesive and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105372223A (en) * 2015-10-20 2016-03-02 安徽理工大学 Ag/TiO2 flexible SERS substrate capable of being repeatedly utilized and preparation method thereof
CN109453766A (en) * 2018-11-05 2019-03-12 北京工业大学 A kind of Ag load TiO of atom level dispersion2The preparation method of mesoporous nano belt photochemical catalyst
CN110713816A (en) * 2019-10-29 2020-01-21 恩平市盈嘉丰胶粘制品有限公司 Organosilicon electromagnetic shielding pressure-sensitive adhesive and preparation method thereof

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