CN106880359A - The preparation of rutile-type Yellow nanometer powder and its finger mark process for show - Google Patents
The preparation of rutile-type Yellow nanometer powder and its finger mark process for show Download PDFInfo
- Publication number
- CN106880359A CN106880359A CN201710079087.XA CN201710079087A CN106880359A CN 106880359 A CN106880359 A CN 106880359A CN 201710079087 A CN201710079087 A CN 201710079087A CN 106880359 A CN106880359 A CN 106880359A
- Authority
- CN
- China
- Prior art keywords
- powder
- preparation
- aobvious
- rutile
- finger mark
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
- A61B5/1171—Identification of persons based on the shapes or appearances of their bodies or parts thereof
- A61B5/1172—Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cosmetics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The present invention proposes preparation and its finger mark process for show of rutile-type Yellow nanometer powder, and the preparation method is comprised the following steps：S1, preparation titanium solution and chromium solution；S2, precipitation reaction；S3, centrifuge washing；S4, drying in oven；S5, Muffle furnace calcining.Finger mark process for show of the invention, including aobvious method is directly brushed, aobvious method and the aobvious method of suspension spray are trembled in dusting.The present invention has following Advantageous Effects：It is good to the fingerprint displaying effect in old impression of the hand and permeability object；Product possesses environmental protection feature, harmless to operator；Preparation method is simple and easy to apply, it is easy to popularization and application.
Description
Technical field
The present invention relates to public security criminal technique finger mark identification field, more particularly to rutile-type Yellow nanometer powder preparation
And its finger mark process for show.
Background technology
Impression of the hand is human contact's object and in the reflecting image of contact surface surface structure left by body surface；And finger
Line has people variant, the characteristics of being basically unchanged throughout one's life.Therefore, it can directly assert individual according to impression of the hand.In solving criminal cases and
Impression of the hand can be played and provide the important function that evidence was solved a case and tried to investigation clue, offer in trial.As can be seen here, latent fingerprint
Appearing technique is the precondition and guarantee for being disclosed and being confirmed crime using impression of the hand.At present, powder method and small-particle suspension method are because of behaviour
Make simple, preparation simple, impression of the hand most efficient method is manifested as scene.Then, powder conventional at present, such as bronze, magnetic
Powder etc. is larger because of particle diameter, it is impossible to fully combined with impression of the hand material, therefore the impression of the hand in old impression of the hand and permeability object is shown
Existing effect on driving birds is not good.To improve the sensitivity of finger mark detection, researcher utilizes some semiconductor nanos（Quantum dot）, rare earth material
Manifest potential impression of the hand Deng as fluorometric reagent, though obtaining better effects, how toxic such reagent is, and need to be set by means of complexity
Standby, operation sequence is cumbersome, is not easy to the popularization of engineering department of basic unit.Also there are the noble metal nanometer materials such as partial report gold, silver can
The sensitivity that Bio-imprinting manifests, but the method high cost are improved, laboratory stage is currently limited to.
It can be seen that, in existing finger mark appearing technique, there is problems with：
1st, conventional powder method is to the fingerprint displaying effect on driving birds is not good in old impression of the hand and permeability object.
2nd, semiconductor nano（Quantum dot）Or rare earth material is toxic, and need to by means of complex device, operation sequence compared with
It is cumbersome, it is not easy to the popularization of engineering department of basic unit.
3rd, the noble metal nanometer material high cost such as gold, silver, is currently limited to laboratory stage.
The content of the invention
In order to solve that existing conventional powder method is present to the fingerprint displaying effect in old impression of the hand and permeability object
Not good problem, the present invention proposes preparation and its finger mark process for show of rutile-type Yellow nanometer powder.
The preparation method of rutile-type Yellow nanometer powder of the present invention, comprises the following steps：
S1, preparation titanium solution and chromium solution：By 38 grams of TiCl4It is slowly dropped in 100mL watery hydrochloric acid, magnetic agitation is obtained
The pale yellow solution A of 2mol/L；Claim 8 grams of Cr (N03)3·9H2O solids, are dissolved in 100mL deionized waters and are configured to 0.2mol/L
Solution B；
S2, precipitation reaction：The B liquid of the A liquid and 8mL that take 20mL respectively is sufficiently mixed, while 2.1 grams of emulsifier op-10s are added,
It is stirred vigorously down and adds dropwise ammoniacal liquor to excess, obtains yellow mercury oxide；
S3, centrifuge washing：Sediment is washed with deionized, treatment is centrifuged repeatedly, removes supernatant liquor, until supernatant liquor pH
For between 6-7, then cleaned 10-20 times with ethanol；
S4, drying in oven：Sediment after washing is put into vacuum drying chamber, 110 DEG C of insulation 2h；
S5, Muffle furnace calcining：Above-mentioned powder is put into Muffle furnace, 800 DEG C are heated to from room temperature, be incubated 2h, be subsequently cooled to
Room temperature, you can obtain the compound Yellow nanometer powder of titanium/chromium.
Further, the mixing speed in the step S2 is 800RPM.
Further, it is 6.5 that the supreme layer clear liquid pH of ion water washing precipitate is used in the step S3.
Present invention additionally comprises the finger mark process for show of above-mentioned rutile-type Yellow nanometer powder, including directly brush shows method, spreads
Powder trembles aobvious method and the aobvious method of suspension spray.
Further, described directly brush shows method, including, appropriate rutile-type Yellow nanometer powder is dipped with fingerprint brush,
Swept from the bottom up along object vertical plane, powder is adhered to object plane, after streakline is seen, play the powder that hair loss is painted, used
Hairbrush is aobvious along a direction brush along the flow direction of streakline, until streakline is clear, this method is applied on smooth impermeability object
Potential impression of the hand manifests.
Further, aobvious method is trembled in the dusting, including, appropriate powder is dipped with fingerprint brush, attack brush holder covers powder
It is placed on object plane；Then both hands hold two relative edges of object makes it shake up and down, allows powder to streak the object plane for being suspected to have impression of the hand, you can
Impression of the hand is showed, excessive powder is withdrawn into container, then gently the powder floated in small ditch dug with a plow is shaked off at the attack object back side, this
Method is applied to permeability or the semipermeability objects such as paper, true qualities wood.
Further, the aobvious method of suspension spray：Comprise the following steps：
S1, suspension preparation：First the Surfactant SDS SDS of 0.5g is dissolved in 50 mL deionized waters,
After stirring is completely dissolved to SDS, 5g titaniums/chromium composite nanometre powder and 50 mL deionized waters, stirring are added until powder point
Dissipate uniform, not stratified.
S2, spray are aobvious：Carrying out spraying aobvious at blood latent fingerprint 20cm with the spray bottle equipped with suspension, solution is filled with sample
Tap is touched, and is observed again after slowly being rinsed with clear water after 30s and is manifested effect, is repeated if effect on driving birds is not good, until showing reason
Sample is dried up with hair dryer after thinking effect.
Rutile-type Yellow nanometer powder prepared by this method has certain dispersiveness in organic phase, is remained with impression of the hand
Thing binding ability is stronger；Its particle diameter is small, good with impression of the hand residue adhesiveness in nanoscale；And this compound is due to selection
Property it is high, only with impression of the hand streakline on grease or hemoglobin occur adhesive attraction, the effect of handprint images ambient interferences can be reduced
Really, contrast is strengthened.Although powder is made up of metallic elements such as titanium, chromium, the two has formed metal by high temperature sintering
Will not be separated out under ion solid solution, normal temperature and pressure, therefore possess environmental protection feature, it is harmless to operator.Therefore the present invention has
Following Advantageous Effects：
1st, it is good to the fingerprint displaying effect in old impression of the hand and permeability object.
2nd, product possesses environmental protection feature, harmless to operator.
3rd, preparation method is simple and easy to apply, it is easy to popularization and application.
Brief description of the drawings
Fig. 1 is the X-ray diffraction spectrogram of the rutile-type Yellow nanometer powder prepared by the present invention.
Fig. 2 is the scanning electron microscope (SEM) photograph of the rutile-type Yellow nanometer powder prepared by the present invention.
Fig. 3 is the elementary analysis figure of the rutile-type Yellow nanometer powder prepared by the present invention.
Fig. 4 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for diving hand print with perspiration on glass.
Fig. 5 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for diving hand print with perspiration on paper.
Fig. 6 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for blood latent fingerprint on glass.
Fig. 7 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for blood latent fingerprint on paper.
Specific embodiment
Fig. 1 is the X-ray diffraction spectrogram of the rutile-type Yellow nanometer powder prepared by the present invention, and the figure shows that its is main
Crystal face characteristic diffraction peak and standard card JCPDS:73-1765 is completely the same, shows that obtained powder is typical rutile structure.
Fig. 2 is the scanning electron microscope (SEM) photograph of the rutile-type Yellow nanometer powder prepared by the present invention.The prepared powder of display
Main 50 ran of particle diameter, and dispersiveness is preferably.
Fig. 3 is the elementary analysis figure of the rutile-type Yellow nanometer powder prepared by the present invention.Show powder by titanium, chromium,
Three kinds of element compositions of oxygen, compositional purity is high, free from admixture.
Fig. 4 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for diving hand print with perspiration on glass,
Fig. 5 is that the rutile-type Yellow nanometer powder prepared by the present invention manifests design sketch for diving hand print with perspiration on paper, and Fig. 6 is this hair
Bright prepared rutile-type Yellow nanometer powder is used for blood latent fingerprint on glass and manifests design sketch, and Fig. 7 is prepared for the present invention
Rutile-type Yellow nanometer powder be used for paper on blood latent fingerprint manifest design sketch.From Fig. 4-Fig. 7：It is of the invention prepared
Rutile-type Yellow nanometer powder manifest outmoded finger mark effect it is good, its finger mark mastoid process streakline is smooth, the details such as spillikin, dot
Feature is protruded, and reagent is shown better than traditional powder.
Embodiment 1：
The preparation method of rutile-type Yellow nanometer powder, comprises the following steps：
S1, preparation titanium solution and chromium solution：By 38 grams of TiCl4It is slowly dropped in 100mL watery hydrochloric acid, magnetic agitation is obtained
The pale yellow solution A of 2mol/L；Claim 8 grams of Cr (N03)3·9H2O solids, are dissolved in 100mL deionized waters and are configured to 0.2mol/L
Solution B；
S2, precipitation reaction：The B liquid of the A liquid and 8mL that take 20mL respectively is sufficiently mixed, while 2.1 grams of emulsifier op-10s are added,
It is stirred vigorously down and adds dropwise ammoniacal liquor to excess, obtains yellow mercury oxide；
S3, centrifuge washing：Sediment is washed with deionized, treatment is centrifuged repeatedly, removes supernatant liquor, until supernatant liquor pH
It is 6.5, then is cleaned with ethanol 16 times；
S4, drying in oven：Sediment after washing is put into vacuum drying chamber, 110 DEG C of insulation 2h；
S5, Muffle furnace calcining：Above-mentioned powder is put into Muffle furnace, 800 DEG C are heated to from room temperature, be incubated 2h, be subsequently cooled to
Room temperature, you can obtain the compound Yellow nanometer powder of titanium/chromium.
Embodiment 2：
By the fingerprint displaying method of the rutile-type Yellow nanometer powder obtained by the present invention：
Directly brush aobvious method：Appropriate powder is dipped with fingerprint brush, is swept from the bottom up along vertical roofing, powder is adhered to thing
Face, after streakline is seen, plays the powder that hair loss is painted, and the flow direction along streakline is aobvious along a direction brush, until streakline is clear.
Embodiment 3：
By the fingerprint displaying method of the rutile-type Yellow nanometer powder obtained by the present invention：
Aobvious method is trembled in dusting：Appropriate powder is dipped with fingerprint brush, attack brush holder makes powder be covered in object plane；Then both hands are held
Two relative edges of object make it shake up and down, allow powder to streak the object plane for being suspected to have impression of the hand, you can to show impression of the hand.By excessive powder
Container is withdrawn, then gently the powder floated in small ditch dug with a plow is shaked off at the attack object back side.
Embodiment 4：
By the fingerprint displaying method of the rutile-type Yellow nanometer powder obtained by the present invention：
The aobvious method of suspension spray：Comprise the following steps：
S1, suspension preparation：First the Surfactant SDS SDS of 0.5g is dissolved in 50 mL deionized waters,
After stirring is completely dissolved to SDS, the rutile-type Yellow nanometer powder and 50 mL deionized waters of 5g are added, stirring is until powder
End is uniformly dispersed, not stratified.
S2, spray are aobvious：Carrying out spraying aobvious at blood latent fingerprint 20cm with the spray bottle equipped with suspension, solution is filled with sample
Tap is touched, and is observed again after slowly being rinsed with clear water after 30s and is manifested effect, is repeated if effect on driving birds is not good, until showing reason
Sample is dried up with hair dryer after thinking effect.
Rutile-type Yellow nanometer powder prepared by this method can fast and efficiently manifest outmoded finger mark.The preparation method
It is simple for process；Its particle diameter is small, good with impression of the hand residue adhesiveness in nanoscale；And this compound is due to selectivity
Height, only with impression of the hand streakline on grease or hemoglobin occur adhesive attraction, the effect of handprint images ambient interferences can be reduced,
Enhancing contrast, so to the good developing effect of outmoded finger mark.Although powder is by titanium, the metallic element composition such as chromium, the two
By high temperature sintering, formed and will not separate out under metal ion solid solution, normal temperature and pressure, therefore possessed environmental protection feature, it is right
Operator is harmless.
Finally, in addition it is also necessary to it is noted that listed above is only several specific embodiments of the invention.Obviously, this hair
Bright to be not limited to above example, one of ordinary skill in the art can directly derive from present disclosure or associate
All technical schemes, are considered as within protection scope of the present invention.
Claims (7)
1. a kind of preparation method of rutile-type Yellow nanometer powder, it is characterised in that the preparation method is comprised the following steps：
S1, preparation titanium solution and chromium solution：By 38 grams of TiCl4It is slowly dropped in 100mL watery hydrochloric acid, magnetic agitation is obtained
The pale yellow solution A of 2mol/L；Claim 8 grams of Cr (N03)3·9H2O solids, are dissolved in 100mL deionized waters and are configured to 0.2mol/L
Solution B；
S2, precipitation reaction：The B liquid of the A liquid and 8mL that take 20mL respectively is sufficiently mixed, while 2.1 grams of emulsifier op-10s are added,
It is stirred vigorously down and adds dropwise ammoniacal liquor to excess, obtains yellow mercury oxide；
S3, centrifuge washing：Sediment is washed with deionized, treatment is centrifuged repeatedly, removes supernatant liquor, until supernatant liquor pH
For between 6-7, then cleaned 10-20 times with ethanol；
S4, drying in oven：Sediment after washing is put into vacuum drying chamber, 110 DEG C of insulation 2h；
S5, Muffle furnace calcining：Above-mentioned powder is put into Muffle furnace, 800 DEG C are heated to from room temperature, be incubated 2h, be subsequently cooled to
Room temperature, you can obtain the compound Yellow nanometer powder of titanium/chromium.
2. preparation method according to claim 1, it is characterised in that：Mixing speed in the step S2 is 800RPM.
3. preparation method according to claim 1 and 2, it is characterised in that：Precipitated with ion water washing in the step S3
Thing to supernatant liquor pH be 6.5.
4. a kind of finger mark process for show, it is characterised in that：Using the preparation method system described in any one in claims 1 to 3
Standby rutile-type Yellow nanometer powder carries out finger mark to be manifested, including directly aobvious method and the aobvious method of suspension spray are trembled in the aobvious method of brush, dusting.
5. the finger mark process for show according to claim 4, it is characterised in that described directly to brush aobvious method, including, use fingerprint
Hairbrush dips appropriate rutile-type Yellow nanometer powder, is swept from the bottom up along object vertical plane, powder is adhered to object plane,
After streakline is seen, the powder that hair loss is painted is played, the flow direction with hairbrush along streakline brushes aobvious along a direction, until streakline is clear
It is clear；This method is applied to potential impression of the hand on smooth impermeability object and manifests.
6. the finger mark process for show according to claim 4, it is characterised in that：Aobvious method is trembled in the dusting, including, use fingerprint
Hairbrush dips appropriate powder, and attack brush holder makes powder be covered in object plane；Then both hands hold two relative edges of object makes its upper and lower
Shake, allows powder to streak the object plane for being suspected to have impression of the hand, you can to show impression of the hand；Excessive powder is withdrawn into container, then gently attack thing
Shake off the powder floated in small ditch dug with a plow in the body back side；This method is applied to permeability or the semipermeability objects such as paper, true qualities wood.
7. the finger mark process for show according to claim 4, it is characterised in that：The aobvious method of suspension spray：Including following
Step：
S1, suspension preparation：First the Surfactant SDS SDS of 0.5g is dissolved in 50 mL deionized waters,
After stirring is completely dissolved to SDS, titanium/chromium composite nanometre powder and 50 mL deionized waters, stirring are added until powder dispersion
Uniformly, it is not stratified；
S2, spray are aobvious：Carrying out spraying aobvious at blood latent fingerprint 20cm with the spray bottle equipped with suspension, solution is fully connect with sample
Touch, observed again after slowly being rinsed with clear water after 30s and manifest effect, repeated if effect on driving birds is not good, until showing preferable effect
Sample is dried up with hair dryer after fruit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079087.XA CN106880359A (en) | 2017-02-14 | 2017-02-14 | The preparation of rutile-type Yellow nanometer powder and its finger mark process for show |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710079087.XA CN106880359A (en) | 2017-02-14 | 2017-02-14 | The preparation of rutile-type Yellow nanometer powder and its finger mark process for show |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106880359A true CN106880359A (en) | 2017-06-23 |
Family
ID=59179176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710079087.XA Pending CN106880359A (en) | 2017-02-14 | 2017-02-14 | The preparation of rutile-type Yellow nanometer powder and its finger mark process for show |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106880359A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908260A (en) * | 2014-01-16 | 2014-07-09 | 中国刑事警察学院 | Latent fingerprint displaying method |
-
2017
- 2017-02-14 CN CN201710079087.XA patent/CN106880359A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103908260A (en) * | 2014-01-16 | 2014-07-09 | 中国刑事警察学院 | Latent fingerprint displaying method |
Non-Patent Citations (4)
| Title |
|---|
| 上官荣昌 等: "《均匀沉淀法制备纳米铬钛复/混合氧化物的研究》", 《淮阴师范学院学报（自然科学版）》 * |
| 彭迪: "《钴绿小颗粒悬浮液显现血手印的研究》", 《刑事技术》 * |
| 李凯滨 等: "《纳米荧光粉末对手印的增强作用研究》", 《科技创新导报》 * |
| 逄高峰: "《无机环保颜料钛铬黄的制备研究》", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gupta et al. | Surface force measurements at the basal planes of ordered kaolinite particles | |
| Dalavi et al. | Electrochromic properties of dandelion flower like nickel oxide thin films | |
| Malfatti et al. | Atomic force microscopy reveals microscale networks and possible symbioses among pelagic marine bacteria | |
| Wang et al. | Steerable light-driven TiO2-Fe janus micromotor | |
| Yuan et al. | Cationic dye-diatomite composites: Novel dusting powders for developing latent fingerprints | |
| CN106859659A (en) | The preparation of cobalt/aluminium compound blue nanometer powder and its finger mark process for show | |
| CN108603202A (en) | Method for using recombinant microorganism to generate metal nanoparticle and metallic sulfide nano-particle | |
| CN106859658A (en) | The preparation of spinel-type Preen nono powder and its finger mark process for show | |
| CN106880359A (en) | The preparation of rutile-type Yellow nanometer powder and its finger mark process for show | |
| CN106865615A (en) | A kind of preparation of copper/chromium composite black nanometer powder and its finger mark process for show | |
| Anaissi et al. | Modified electrodes based on mixed bentonite vanadium (V) oxide xerogels | |
| CN103774175A (en) | Ruthenium zirconium tin titanium oxide-embedded active coating and preparation method thereof | |
| Divya et al. | Fluorescent amphiphilic silica nanopowder for developing latent fingerprints | |
| Chen et al. | Zinc oxide quantum dots synthesized by electrochemical etching of metallic zinc in organic electrolyte and their electrochemiluminescent properties | |
| CN103562748B (en) | Sheet metal for neutron detection device or ionization chamber deposits the method for boron | |
| JP6204818B2 (en) | Black titanium core-shell particles, production method thereof, and electrophoretic element using black titanium core-shell particles | |
| JP5015773B2 (en) | Titanium oxide with rutile structure | |
| CN107324377B (en) | A kind of zinc metastannate/stannic oxide concave surface cubic materials and preparation method thereof | |
| JP4490667B2 (en) | Black pigment particles | |
| Li et al. | Hydrophobic‐Binding‐Driven and Fluoresence‐Free Development of Aged Fingerprints Based on Zinc Oxide Nanoparticles | |
| JP6868453B2 (en) | Fingerprint detection powder | |
| CN109929353A (en) | A kind of meeting room signal interference coating and preparation method thereof | |
| TWI762552B (en) | Substrate protective film, member for preventing adhesion, and method for forming member for preventing adhesion | |
| JP3874754B2 (en) | Fingerprint detection powder and fingerprint detection method | |
| Wang et al. | Evaporizing-deposition to synthesize micro-and nanoscale spherical anatase TiO2 film |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |
|
| RJ01 | Rejection of invention patent application after publication |