GB/T 45764-2025 Active National standards

GB/T 45764-2025 Fine ceramics—Determination of photocatalytic activity of surfaces in an aqueous medium—Degradation of methylene blue

Publish Date: 2025-06-30 Implement Date: 2026-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45764-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Ceramics, glass

ICS Name: High-end ceramics

Publish Date: 2025-06-30

Implement Date: 2026-01-01

Pages: 20 pages

Scope

This document describes a method for degrading methylene blue (MB) molecules in aqueous media under ultraviolet (UV) irradiation using a photocatalyst, which is used to determine the photocatalytic activity of the photocatalyst surface and characterize the ability of the photocatalyst surface to degrade organic molecules under UV irradiation.
This document is suitable for evaluating the surface activity of solid photocatalysts.

Development Information

Word Count: 22 Thousand words Pages: 20 pages

Referenced Standards

GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 26791-2011 Glass cells GB/T 26813-2011 Double beam UV/VIS spectrophotometer GB/T 27025-2008 General requirements for the competence of testing and calibration laboratories GB/T 27025-2019 General requirements for the competence of testing and calibration laboratories JJG 879-2002 Ultraviolet Irradiance Meters JJG 879-2015 Ultraviolet Radiometers

Adopt standards

ISO 10678:2024

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