CN104048895B - A kind of assay method of titanium dioxide surface hydroxy radical content - Google Patents

A kind of assay method of titanium dioxide surface hydroxy radical content Download PDF

Info

Publication number
CN104048895B
CN104048895B CN201310577762.3A CN201310577762A CN104048895B CN 104048895 B CN104048895 B CN 104048895B CN 201310577762 A CN201310577762 A CN 201310577762A CN 104048895 B CN104048895 B CN 104048895B
Authority
CN
China
Prior art keywords
titanium dioxide
dioxide sample
solution
standard solution
acid standard
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.)
Active
Application number
CN201310577762.3A
Other languages
Chinese (zh)
Other versions
CN104048895A (en
Inventor
苏洋
杨敏
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.)
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Original Assignee
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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 Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd filed Critical Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
Priority to CN201310577762.3A priority Critical patent/CN104048895B/en
Publication of CN104048895A publication Critical patent/CN104048895A/en
Application granted granted Critical
Publication of CN104048895B publication Critical patent/CN104048895B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The present invention relates to a kind of can the method for quantitative measurement titanium dioxide sample the adsorbed hydroxyl content, steps of the method are: the titanium dioxide sample of A, accurately weighing m quality, dry to constant weight m 1, described bake out temperature is 220 ~ 250 DEG C; B, accurately weighing m 2the steps A gained titanium dioxide sample of quality is dispersed in water; C, under heating stirring reaction condition, homodisperse for step B described titanium dioxide sample to be contacted with hydrochloric acid standard solution or nitric acid standard solution; D, the potpourri of gained after step C contact is carried out Separation of Solid and Liquid, obtain separation solution; E, by the separation solution constant volume in step D to certain volume, obtain solution after constant volume; The pH value of solution after constant volume described in F, determination step E.The content of titanium dioxide surface hydroxyl is calculated according to formula 1 and formula 2.Method energy accurate quantitative analysis of the present invention measures the content of titanium dioxide sample surface hydroxyl, and simple to operate.

Description

A kind of assay method of titanium dioxide surface hydroxy radical content
Technical field
The present invention relates to a kind of method measuring titanium dioxide surface hydrogen bonding hydroxy radical content, and a kind of method measuring titanium dioxide surface hydroxyl total content.
Background technology
Titania, because of advantages such as chemical stability are good, nontoxic, inexpensive, is widely used in various fields such as multiphase photocatalysis, solar cell, antibacterial building materials and light therapies, has broad prospects.Titanium dioxide surface contains abundant oh group, thermal stability, be mainly divided into two kinds, and a kind of is the hydrogen bonding hydroxyl that thermal stability is lower, and another kind is the isolated hydroxyl that thermal stability is higher.The classification of surface hydroxyl and character have very important meaning to the absorption of research titania and photocatalysis essence.At present, the research of titanium dioxide surface hydroxyl mainly concentrate on utilize in-situ ft-ir effects on surface hydroxyl qualitative on, there is no open source literature to measuring titanium dioxide surface hydroxyl analysis method by measuring hydrogen bonding hydroxy radical content and isolated hydroxy radical content respectively.
Summary of the invention
The object of this invention is to provide a kind of can the method for Accurate Determining titanium dioxide sample Surface Hydrogen bonded hydroxy content and the method for titanium dioxide sample total surface hydroxy radical content.
According to an aspect of the present invention, the invention provides a kind of method measuring titanium dioxide surface hydrogen bonding hydroxy radical content, the method comprises the following steps:
The titanium dioxide sample of A, accurately weighing m quality, dries to constant weight m 1, described bake out temperature is 220-250 DEG C;
B, determine Surface Hydrogen bonded hydroxy content in described titanium dioxide sample according to following computing formula:
OH % = m - m 1 m × 100 Formula 1
In formula: the quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g.
According to a further aspect in the invention, the invention provides a kind of method measuring titanium dioxide sample surface hydroxyl total content, the method comprises the following steps:
The titanium dioxide sample of A, accurately weighing m quality, dries to constant weight m 1, described bake out temperature is 220-250 DEG C;
B, accurately weighing m 2the steps A gained titanium dioxide sample of quality is dispersed in water;
C, under heating stirring reaction condition, homodisperse for step B described titanium dioxide sample to be contacted with hydrochloric acid standard solution or nitric acid standard solution;
D, the potpourri of gained after step C contact is carried out Separation of Solid and Liquid, obtain separation solution;
E, by the separation solution constant volume in step D to certain volume, obtain solution after constant volume;
The pH value of solution after constant volume described in F, determination step E, determine surface hydroxyl total content in described titanium dioxide sample according to following computing formula:
OH % = ( C 1 V 1 - 10 - pH × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-hydrochloric acid standard solution or nitric acid concentration of standard solution, mol/L;
V 1-add hydrochloric acid standard solution or nitric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
Method of the present invention can measure the content of titanium dioxide sample Surface Hydrogen bonded hydroxy and the content of titanium dioxide sample total surface hydroxyl by accurate quantitative analysis, and the method is simple to operate, and agents useful for same is easy to get, and experimental apparatus used is conventional.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
One aspect of the present invention provides a kind of method measuring titanium dioxide surface hydrogen bonding hydroxy radical content, and the method comprises the following steps:
The titanium dioxide sample of A, accurately weighing m quality, dries to constant weight m 1, described bake out temperature is 220-250 DEG C;
B, determine Surface Hydrogen bonded hydroxy content in described titanium dioxide sample according to following computing formula:
OH % = m - m 1 m × 100 Formula 1
In formula: the quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g.
The present invention provides a kind of method measuring titanium dioxide surface hydroxyl total content on the other hand, and the method comprises the following steps:
The titanium dioxide sample of A, accurately weighing m quality, dries to constant weight m 1, described bake out temperature is 220-250 DEG C;
B, accurately weighing m 2the steps A gained titanium dioxide sample of quality is dispersed in water;
C, under heating stirring reaction condition, homodisperse for step B described titanium dioxide sample to be contacted with hydrochloric acid standard solution or nitric acid standard solution;
D, the potpourri of gained after step C contact is carried out Separation of Solid and Liquid, obtain separation solution;
E, by the separation solution constant volume in step D to certain volume, obtain solution after constant volume;
The pH value of solution after constant volume described in F, determination step E, determine surface hydroxyl total content in described titanium dioxide sample according to following computing formula:
OH % = ( C 1 V 1 - 10 - pH × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-hydrochloric acid standard solution or nitric acid concentration of standard solution, mol/L;
V 1-add hydrochloric acid standard solution or nitric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
According to method of the present invention, wherein, in steps A, described bake out temperature is 220-250 DEG C, and titanium dioxide surface hydrogen bonding hydroxyl thermal stability is lower, generally can disappear about 200 DEG C process; Isolated hydroxyl thermal stability is higher, character is comparatively stable, generally just can disappear when 350 DEG C or higher temperature, therefore, have chosen at 220-250 DEG C of baking titanium dioxide sample to constant weight in determination step A of the present invention, temperature is too low, and hydrogen bonding hydroxyl not easily disappears, temperature is too high, and isolated hydroxyl may disappear.In order to measure titanium dioxide surface hydrogen bonding hydroxy radical content more accurately, preferably, described bake out temperature is 230-240 DEG C.
Described oven dry is preferably carried out in electric heating constant-temperature blowing drying box.
According to method of the present invention, wherein, in step B, the consumption of water can be selected in relative broad range, as long as titanium dioxide sample can be made dispersed, under preferable case, relative to the titanium dioxide sample that 0.5000g is dispersed in water, the volume of water is 50-200mL, is more preferably 100mL.
According to method of the present invention, wherein, in step B, described dispersion can be carried out under any known method, as long as titanium dioxide sample can be made to be dispersed in water uniformly, under preferable case, it is suspension that described dispersion first stirs titania solution with glass bar, then under ultrasound wave exists, carry out continuation dispersion.
Described hyperacoustic frequency can be existing various ultrasonic frequency, and in order to make titanium dioxide sample disperse fully in water, under preferable case, described ultrasonic frequency is 30-80kHz; The time of ultrasound wave dispersion is 2-3min.
According to method of the present invention, wherein, in step C, as long as described heating stirring reaction condition can make the hydroxyl complete reaction of titanium dioxide surface and sour surplus can in measurement range at accurate pH meter, under preferable case, described mixing time is 1-1.5h; Described heating-up temperature is 30-35 DEG C.
The consumption of described hydrochloric acid or nitric acid standard solution can be selected in relative broad range, as long as can make the hydroxyl complete reaction of titanium dioxide surface and sour surplus can in measurement range at accurate pH meter.Preferably, the concentration of described hydrochloric acid or nitric acid standard solution is 0.005-0.008mol/L; Relative to the titanium dioxide sample that 0.5000g is dispersed in water, the volume of described hydrochloric acid or nitric acid standard solution is 5-10mL.
According to method of the present invention, wherein, in step D, the mode of described Separation of Solid and Liquid can be carried out under any known method, as long as finally can obtain the filtrate of clarifying.Under preferable case, the mode of described Separation of Solid and Liquid comprises carries out standing sedimentation and filtration successively by step C contact gained potpourri, and filtrate is carried out centrifuging.
The described standing sedimentation time is 3-10 hour, be preferably 5-8 hour, described filtration is preferably Filter paper filtering, be more preferably fast grade filter paper to filter, described centrifuging is preferably centrifuge and is separated, be more preferably supercentrifuge centrifuging, rotating speed is 5000-10000r/min, finally obtains settled solution; Settled solution is cooled to room temperature, is convenient to accurate constant volume in step e.
According to method of the present invention, wherein, relative to the titanium dioxide sample that 0.5000g is dispersed in water, in step e, centrifugal rear settled solution, the volume of constant volume can be 50-200mL, is preferably 100mL.
As long as can the pH value of Accurate Determining filtrate in step e, under preferable case, the assay method of described pH value be that pH meter measures, and is preferably the pH value that Accurate pH measures solution after constant volume, accurate Calculation after being convenient to.The mensuration of pH value can be carried out according to operation steps described in corresponding analytical approach GB/T6920-1986 " the mensuration glass electrode method of water pH value ".
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
The invention will be further described by the following examples.
The titanium dioxide sample of following examples and comparative example is commercially available product.
Embodiment 1
The present embodiment is for illustration of the content of titanium dioxide surface hydrogen bonding hydroxyl of the present invention and the assay method of hydroxyl total content.
Accurately take titanium dioxide sample 1.000g in evaporating dish, be placed in electric heating constant-temperature blowing drying box 230 DEG C and dry to constant weight and weigh.Accurately take and dry to constant weight titanium dioxide sample 0.5000g in 200mL beaker, add 100mL distilled water, be separated into suspension with glass bar agitating solution, titanium dioxide sample is placed in ultrasound wave and disperses 2min, hyperacoustic frequency is 80kHz, is cooled to room temperature; In titanium dioxide sample, drip hydrochloric acid standard solution (0.005mol/L) 8mL, and 30 DEG C of constant temperature stir 1h on magnetic stirring apparatus, titanium dioxide sample surface hydroxyl and hydrochloric acid standard solution are fully reacted, standing sedimentation 5 hours after reacting completely.Filter with fast grade filter paper, filtrate is placed in supercentrifuge and is separated, inclining supernatant liquor and is settled to 100mL, is transferred in 100mL beaker, adopts accurate pH meter to measure solution ph according to GB/T6920-1986.Then calculate the content of titanium dioxide surface hydrogen bonding hydroxyl according to following formula 1, calculate the total content of titanium dioxide surface hydroxyl according to following formula 2:
OH % = m - m 1 m × 100 Formula 1
OH % = ( C 1 V 1 - 10 - pH × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-hydrochloric acid standard solution concentration, mol/L;
V 1-add hydrochloric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
Carry out 11 times according to the method described above to same titanium dioxide sample independent to measure, the described content of titanium dioxide surface hydrogen bonding hydroxyl and the measurement result of total content of hydroxyl and the precision of statistical method, as shown in table 1.
Table 1
Good, reliable and stable by table 1 visual method precision.
Embodiment 2
The present embodiment is for illustration of the content of titanium dioxide surface hydrogen bonding hydroxyl of the present invention and the assay method of hydroxyl total content.
Accurately take titanium dioxide sample 1.000g in evaporating dish, be placed in electric heating constant-temperature blowing drying box 240 DEG C and dry to constant weight and weigh.Accurately take the titanium dioxide sample 0.5000g that dries to constant weight and be placed in 200mL beaker, add 100mL distilled water, be separated into suspension with glass bar agitating solution, titanium dioxide sample is placed in ultrasound wave and disperses 3min, hyperacoustic frequency is 30kHz, is cooled to room temperature; Nitric acid standard solution (0.005mol/L) 8mL is dripped in titanium dioxide sample, and 35 DEG C of constant temperature stir 1.5h on magnetic stirring apparatus, titanium dioxide sample surface hydroxyl and nitric acid standard solution are fully reacted, after reacting completely, titanium dioxide sample standing sedimentation 5 hours.Filter with fast grade filter paper, filtrate is placed in supercentrifuge and is separated, inclining supernatant liquor and is settled to 100mL, is transferred in 100mL beaker, adopts accurate pH meter to measure solution ph according to GB/T6920-1986.Then calculate the content of titanium dioxide surface hydrogen bonding hydroxyl according to following formula 1, calculate the total content of titanium dioxide surface hydroxyl according to following formula 2:
OH % = m - m 1 m × 100 Formula 1
OH % = ( C 1 V 1 - 10 - pH × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-nitric acid concentration of standard solution, mol/L;
V 1-add nitric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
Carry out 11 times according to the method described above to same titanium dioxide sample independent to measure, the described content of titanium dioxide surface hydrogen bonding hydroxyl and the measurement result of total content of hydroxyl and the precision of statistical method, as shown in table 2.
Table 2
Good, reliable and stable by table 2 visual method precision.
Embodiment 3
The present embodiment is for illustration of the content of titanium dioxide surface hydrogen bonding hydroxyl of the present invention and the assay method of hydroxyl total content.
Accurately take titanium dioxide sample 1.000g in evaporating dish, be placed in electric heating constant-temperature blowing drying box 250 DEG C and dry to constant weight and weigh.Accurately take the titanium dioxide sample 0.5000g that dries to constant weight and be placed in 200mL beaker, add 100mL distilled water, be separated into suspension with glass bar agitating solution, titanium dioxide sample is placed in ultrasound wave and disperses 2.5min, hyperacoustic frequency is 40kHz, is cooled to room temperature; Nitric acid standard solution (0.008mol/L) 5mL is dripped in titanium dioxide sample, and 33 DEG C of constant temperature stir 1.2h on magnetic stirring apparatus, titanium dioxide sample surface hydroxyl and nitric acid standard solution are fully reacted, after reacting completely, titanium dioxide sample standing sedimentation 8 hours.Filter with fast grade filter paper, filtrate is placed in supercentrifuge and is separated, inclining supernatant liquor and is settled to 100mL, is transferred in 100mL beaker, adopts accurate pH meter to measure solution ph according to GB/T6920-1986.Then calculate the content of titanium dioxide surface hydrogen bonding hydroxyl according to following formula 1, calculate the total content of titanium dioxide surface hydroxyl according to following formula 2:
OH % = m - m 1 m × 100 Formula 1
OH % = ( C 1 V 1 - 10 - pH × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-nitric acid concentration of standard solution, mol/L;
V 1-add nitric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
Carry out 11 times according to the method described above to same titanium dioxide sample independent to measure, the described content of titanium dioxide surface hydrogen bonding hydroxyl and the measurement result of total content of hydroxyl and the precision of statistical method, as shown in table 3.
Table 3
Good, reliable and stable by table 3 visual method precision.
As can be seen from showing the data of 1-3 relatively, the content of titanium dioxide sample Surface Hydrogen bonded hydroxy of the present invention and the assay method precision of hydroxyl total content good, reliable and stable, to measure the analysis result of the content of titanium dioxide sample total surface hydroxyl basically identical with adding nitric acid standard solution to add hydrochloric acid standard solution.
Therefore, use described method of the present invention can measure the content of titanium dioxide sample Surface Hydrogen bonded hydroxy and the content of titanium dioxide sample total surface hydroxyl by accurate quantitative analysis, and the method is simple to operate, agents useful for same is easy to get, and experimental apparatus used is conventional.
The present invention is not limited to the detail in above-mentioned embodiment, and within the scope of technical conceive of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.It should be noted that in addition, each the concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (7)

1. measure a method for titanium dioxide sample surface hydroxyl total content, the method comprises the following steps:
The titanium dioxide sample of A, accurately weighing m quality, dries to constant weight m 1, described bake out temperature is 220-250 DEG C;
B, accurately weighing m 2the steps A gained titanium dioxide sample of quality is dispersed in water;
C, under heating stirring reaction condition, homodisperse for step B described titanium dioxide sample to be contacted with hydrochloric acid standard solution or nitric acid standard solution;
D, the potpourri of gained after step C contact is carried out Separation of Solid and Liquid, obtain separation solution;
E, by the separation solution constant volume in step D to certain volume, obtain solution after constant volume;
The pH value of solution after constant volume described in F, determination step E, determine surface hydroxyl total content in described titanium dioxide sample according to following computing formula:
O H % = ( C 1 V 1 - 10 - p H × V 2 ) × 17.01 × 10 - 3 m 2 × 100 + m - m 1 m × 100 Formula 2
In formula: C 1-hydrochloric acid standard solution or nitric acid concentration of standard solution, mol/L;
V 1-add hydrochloric acid standard solution or nitric acid standard solution volume, mL;
V 2volume after-constant volume, mL;
The molal weight of 17.01-surface hydroxyl, g/mol;
The pH value that pH-step F records;
The quality of the titanium dioxide sample of m-take, g;
M 1-dry the quality of titanium dioxide sample to constant weight, g;
M 2-the quality of titanium dioxide sample that is dispersed in water, g.
2. method according to claim 1, wherein, in steps A, described bake out temperature is 230-240 DEG C, and described oven dry is carried out in electric heating constant-temperature blowing drying box.
3. method according to claim 1, wherein, in step B, described in be dispersed in ultrasound wave exist under carry out, hyperacoustic frequency is 30-80kHz, and the time of dispersion is 2-3min.
4. method according to claim 1, wherein, in step C, described heating stirring reaction condition comprises: mixing time is 1-1.5h; Described heating-up temperature is 30-35 DEG C.
5. method according to claim 1, wherein, in step C, the concentration of described hydrochloric acid standard solution or nitric acid standard solution is 0.005-0.008mol/L.
6. method according to claim 5, wherein, in step C, the volume of described hydrochloric acid or nitric acid standard solution is 5-10mL.
7., according to the method in claim 1-6 described in any one, wherein, in step F, use Accurate pH measurement to determine the pH value of solution after the constant volume that step e obtains.
CN201310577762.3A 2013-11-18 2013-11-18 A kind of assay method of titanium dioxide surface hydroxy radical content Active CN104048895B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310577762.3A CN104048895B (en) 2013-11-18 2013-11-18 A kind of assay method of titanium dioxide surface hydroxy radical content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310577762.3A CN104048895B (en) 2013-11-18 2013-11-18 A kind of assay method of titanium dioxide surface hydroxy radical content

Publications (2)

Publication Number Publication Date
CN104048895A CN104048895A (en) 2014-09-17
CN104048895B true CN104048895B (en) 2016-02-17

Family

ID=51502017

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310577762.3A Active CN104048895B (en) 2013-11-18 2013-11-18 A kind of assay method of titanium dioxide surface hydroxy radical content

Country Status (1)

Country Link
CN (1) CN104048895B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113533121B (en) * 2021-07-16 2022-09-23 华东理工大学 Method for determining hydroxyl on surface of white carbon black

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3290507B2 (en) * 1993-06-22 2002-06-10 川崎製鉄株式会社 Method for measuring coating weight of coated metal plate
JP2003246622A (en) * 2002-02-25 2003-09-02 Sumitomo Chem Co Ltd Titanium oxide precursor, method of producing the same and method of producing titanium oxide using the precursor
CN101241060B (en) * 2008-02-20 2010-10-13 攀钢集团攀枝花钢铁研究院有限公司 Method for determining ammonium vanadate moisture
TWI487668B (en) * 2009-02-19 2015-06-11 Sakai Chemical Industry Co Dispersion of rutile-type titanium oxide particles, method for producing the same, and use thereof
CN101813594A (en) * 2010-04-01 2010-08-25 中国石油大学(华东) Method for quantitatively evaluating solid-liquid separation effect of drilling fluid vibrating sieve
US8349933B2 (en) * 2010-07-21 2013-01-08 Sabic Innovative Plastics Ip B.V. Silicone polyimide compositions with improved flame retardance
CN102964936B (en) * 2012-12-11 2015-04-08 中国建筑股份有限公司 Aqueous acrylic acid based anticorrosive static conductive paint and preparation method thereof

Also Published As

Publication number Publication date
CN104048895A (en) 2014-09-17

Similar Documents

Publication Publication Date Title
Albishri et al. Hyphenation of enzyme/graphene oxide-ionic liquid/glassy carbon biosensors with anodic differential pulse stripping voltammetry for reliable determination of choline and acetylcholine in human serum
EP0282532B2 (en) Determination of biomass
CN102764677A (en) Preparation method of localized surface plasmon resonance (LSPR) microfluidic chip
Jiang et al. GUITAR-enhanced facile discrimination of aged Chinese Baijiu using electrochemical impedance spectroscopy
CN110987738A (en) Automatic turbid liquid detection device and method
CN103254662A (en) Organic surface modification method for preparing ultra-disperse rutile titanium dioxide
CN102590163A (en) Method for detecting bisulfite ion
CN105973956B (en) Detect the complex film modified acetylene black electrode of graphene-cuprous oxide and detection method of vanillic aldehyde in food
CN104048895B (en) A kind of assay method of titanium dioxide surface hydroxy radical content
CN110779907A (en) Method for rapidly detecting content of hydrogen peroxide
CN104914143B (en) A kind of molecular imprinting functionalization CdS/3DOM TiO in situ2The photoelectric analysis method of/BDD electrode pair BaPs
CN102109433A (en) Method for digesting sample in process of measuring chemical oxygen demand (COD)
CN106124588B (en) A kind of preparation method of the electrochemistry nonyl phenol sensor based on titania-doped/molybdenum disulfide composite material
CN110632137A (en) Fixing-free and mark-free photoelectrochemical microRNA sensor based on methylene blue controllable release and application thereof
CN108107098B (en) Based on WO3Method for detecting alcoholic strength in white spirit by using/FTO photoelectric material
Li et al. Polydopamine-Based Colorimetric Superwettable Biosensor for Highly Sensitive Detection of Hydrogen Peroxide and Glucose
CN104458660A (en) Biomolecule detection method based on porous transmission-type silicon photonic crystal microcavity angular detection device
CN104020169A (en) Chemical detection method for dissolved organic matters in organic fertilizer
CN112198121A (en) Photonic crystal sensing material for SEB (styrene-ethylene-butadiene-styrene) ultrasensitive detection, preparation method thereof and method for detecting SEB ultrasensitively
CN109932275A (en) The detection method of sulfate radical content in a kind of molybdenum base solution
CN103084073A (en) Porous membrane composed of cellulose doped with 1,4-dihydroxy anthraquinone and bivalent copper ion and preparation method and application thereof
CN103926280A (en) Preparation method for electrochemical enzyme sensor
CN104142283A (en) Method for measuring barium titanate content
CN103674873B (en) Method for quantificationally detecting serine
Sundararam et al. AC impedance measurement for the enzyme kinetics of urea–urease system: a model for impedimetric biosensor

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant