ISO 19722:2017
Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for determination of photocatalytic activity on semiconducting photocatalytic materials by dissolved oxygen consumption
ISO 19722:2017 specifies the test method for determination of concentration of dissolved oxygen consumed due to photocatalytic oxidation of phenol in aqueous phase by semiconducting photocatalytic substances. The method is applicable to powder test sample or film test piece of semiconducting photocatalystic material targeting water contaminants. This test method is not applicable for evaluating the materials conjugated with other base material, such as organic binder which can also be decomposed by the photocatalytic activity.
ISO 19722:2017 is applicable to the test method for the activity of powder test sample or film test piece of semiconducting photocatalystic material targeting water contaminants.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Materials
6.1 Reagent
6.2 Purified water
6.3 Purified air
6.4 Purified water saturated with dissolved oxygen
6.5 Test solution
7 Test apparatus
7.1 General
7.2 Ultraviolet (UV) — Irradiation light source
7.3 UV radiometer
7.4 UV light intensity
7.5 DO analyser
7.6 Magnetic stirrer and magnetic stirring bar
8 Arrangement of test method
8.1 Measuring device setup
8.2 Test vessel and implement
9 Test material
9.1 Powder test sample
9.2 Film test piece
10 Procedure of the measurement
10.1 Test temperature
10.2 Preparation of water
10.3 Powder test sample
10.3.1 Preparation of suspension from powder test sample
10.3.2 Procedure of the measurement
10.4 Film test piece
10.4.1 Preparation of film test piece
10.4.2 Procedure of the measurement
10.5 Blank POD(%)
11 Evaluation of results
11.1 General
11.2 Evaluation of POD
12 Test report
Annex A (informative) Example of suitable measuring device component
Annex B (informative) Example of suitable test vessel and implement
Annex C (informative) Example of test position of test vessel
Annex D (informative) Example of a data evaluation
Annex E (informative) Results of the interlaboratory test
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Principle
6 Materials
6.1 Reagent
6.2 Purified water
6.3 Purified air
6.4 Purified water saturated with dissolved oxygen
6.5 Test solution
7 Test apparatus
7.1 General
7.2 Ultraviolet (UV) — Irradiation light source
7.3 UV radiometer
7.4 UV light intensity
7.5 DO analyser
7.6 Magnetic stirrer and magnetic stirring bar
8 Arrangement of test method
8.1 Measuring device setup
8.2 Test vessel and implement
9 Test material
9.1 Powder test sample
9.2 Film test piece
10 Procedure of the measurement
10.1 Test temperature
10.2 Preparation of water
10.3 Powder test sample
10.3.1 Preparation of suspension from powder test sample
10.3.2 Procedure of the measurement
10.4 Film test piece
10.4.1 Preparation of film test piece
10.4.2 Procedure of the measurement
10.5 Blank POD(%)
11 Evaluation of results
11.1 General
11.2 Evaluation of POD
12 Test report
Annex A (informative) Example of suitable measuring device component
Annex B (informative) Example of suitable test vessel and implement
Annex C (informative) Example of test position of test vessel
Annex D (informative) Example of a data evaluation
Annex E (informative) Results of the interlaboratory test
Bibliography