GB/T 39716-2020 in English

VALID

Test method for air-purification performance of photocatalytic materials and products—Removal of nitric oxide

Issued on:2020-12-14
Implemented on:2021-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 39716-2020
Document status:	VALID
Title in English:	Test method for air-purification performance of photocatalytic materials and products—Removal of nitric oxide
Title in Chinese:	光催化材料及制品空气净化性能测试方法氮氧化物的去除
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-12-14
Implemented on:	2021-07-01
ICS Classification:	81.060.20-Ceramic products
Chinese Classification:	Q32-Special ceramics
Professional Classification:	GB-National Standard
Related Keywords:	test method products removal removal efficiency removal efficiency decay rate sample surface performance evaluation index system characterize material performance
Related Topics:	Photocatalytic photocatalytic material Nitrogen oxides catalytic material zero air Chromatographic nitrogen oxides Photocatalytic performance test method Photocatalytic performance test method Photocatalytic Oxidation Performance photocatalytic light source How to measure catalytic performance photooxidative photocatalysis Cobalt Photocatalytic Oxidation Photocatalytic oxidation test What is the photocatalytic performance Photocatalytic removal of voc Photocatalytic removal of voc voc photocatalytic method Nitrogen deoxygenation photocatalyst oxygen zero air The performance of photocatalysis is different every time Nitrogen oxide test Chemical method for total nitrogen removal Right photocatalytic performance Photocatalytic test performance photocatalytic light source Photocatalytic Performance Materials Radon removal air purification box catalytic material Nitrogen oxide test method Sample cleanup method chemical method total nitrogen Photocatalytic test Photocatalytic test method Determination method of atmospheric nitrogen oxides Chemical Nitrogen Removal Methods performance photocatalysis Nitrogen oxide detection method Several Determination Methods of Nitrogen Oxides Nitrogen oxide detection method Methods of Sample Cleanup Catalytic removal of voc photocatalytic nitrogen Nitrogen degassing eluent w2 Nitrogen production method photocatalytic oxygen removal NOx method bio-oil photocatalysis photocatalytic photooxidation Materials for air purifiers Atmospheric nitrogen oxides determination method Nitrogen oxide test method photocatalytic material What detection method is used for nitrogen oxides Nitrogen recovery Detection method of nitrogen oxides in the air Nitrogen removal Materials and products air purification method Gasification performance GBT39716 GB/T 39716-2020 Frontiers of Photocatalytic Dyes Physical and chemical performance testing\|Electrochemical testing\|Battery testing\|Organic material structure and performance, etc.\|Inorganic material structure and performance, etc. Membrane removal of dissolved nitrogen The role of neutral alumina purification How to test for nitrogen vacancies Material oxidation resistance test method Analysis of nitrogen oxides in the air How to use nitrogen pressure to test the air tightness of air conditioners? NOx Method Validation Report Spectrophotometry Advantages and Disadvantages of Nitrogen Oxide Measurement Methods Laboratory methods for eliminating nitric oxide Current monitoring methods for nitrogen oxides Normirtazapine detection method Nitrogen oxide sampling methods and basis Chemiluminescence method to remove magnetic separation Potassium iodide method for measuring the oxidation ability of materials Photocatalytic gas purification standards Methods to remove total nitrogen Methods for controlling nitrogen oxides in power plants Method for preparing azide from bromide How to control nitrogen oxides Total nitrogen removal method What method is used to measure nitrogen oxides? How to remove fluoride How to measure nitrogen oxides Material air oxidation experiment Soil Perfluorinated Compounds Removal Methods What are the common measurement methods for nitrogen oxides? Manual determination method of nitrogen oxides Nitrogen removal method How to remove hydrogen peroxide Manual determination of nitrogen oxides Comparison of nitrogen oxide determination methods Oxidizing substances test method The best method for detecting nitrogen oxides

《GB/T 39716-2020光催化材料及制品空气净化性能测试方法氮氧化物的去除》由TC194（全国工业陶瓷标准化技术委员会）归口，主管部门为中国建筑材料联合会。

Introduction

Analysis of the core content of the standard

This standard specifies the test method for the purification performance of photocatalytic materials on nitrogen oxides (NOx) in the air under ultraviolet/visible light irradiation, focusing on monitoring the removal efficiency of nitric oxide (NO) and the amount of by-product generated by nitrogen dioxide (NO2).

Test principle and equipment

Key components	Technical requirements	Parameter indicators
Photocatalytic reactor	Enclosed square structure, quartz/boron silicon window	Sample-window spacing 5.0±0.5mm
Gas supply system	NO standard gas + zero-order air mixture	NO concentration 1.0±0.05mL/m³
Light source system	UV-A (300-400nm) or visible light	Irradiation intensity 10±0.5W/m²

Key steps of the test process

Sample pretreatment: UV light (254nm) irradiation for 8h to remove surface organic matter
Dark reaction stage: Pass NO gas for 30min and record the initial adsorption amount
Light reaction stage: Turn on the light source for 5h and monitor the NO/NO2 concentration in real time
Elution analysis: Ion chromatography to determine the nitrate/nitrite on the sample surface

Performance evaluation index system

Characterize material performance through three core parameters:

Net NO removal (μmol) = NO removal - NO2 generation
Nitrogen recovery rate (%) = Total eluted nitrogen/Net NO removal × 100
Stability index: Removal efficiency decay rate within 5h test period

Implementation suggestions

Laboratory configuration requirements

It is necessary to be equipped with a chemiluminescence NO analyzer (accuracy 0.0001mg/L) and a ion chromatograph. It is recommended to establish a standard gas dynamic distribution system.

Testing precautions

Humidity must be strictly controlled at 50±5%RH (25℃ corresponds to 1.56% water vapor concentration)
Porous samples must use special support blocks to ensure gas permeability
UV light sources must be equipped with safety shading devices

More samples: YD/T 3934-2021 GB 18306-2015 DL/T 5154-2012

Sample only — not a preview of GB/T 39716-2020

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