GB/T 39359-2020Integrating sphere method for the test of liquid/solid suspended photocatalytic hydrogen production reaction (English PDF)

GB/T 39359-2020 is the English-translated version of 积分球法测量悬浮式液固光催化制氢反应.

GB/T 39359-2020 fixes the integrating sphere method for measuring the quantum efficiency of suspension liquid-solid photocatalytic hydrogen production reaction systems, and specifies the test system, the measurement content, the test requirements and the data and calculation requirements for it.

Clause 1 states that it applies to the accurate measurement of the spectral absorption characteristics and of the quantum efficiency of hydrogen production in liquid-solid suspension solar photocatalytic hydrogen production reaction systems.

The body runs Scope, Normative references, Terms and definitions, Symbol, Test system, Measurement content, Test requirements and Data and calculation, with three appendices: the basic principles of the optical integrating sphere and a test case, both informative, and a normative appendix on the integrating sphere photocatalytic hydrogen production reaction measurement system.

Clause 2 cites GB/T 8981, GB/T 26179, GB/T 26915 and JC/T 185.

Clause 3 defines the integrating sphere as a hollow sphere for optical measurement whose inner surface is uniformly coated with a highly reflective diffuse medium without wavelength selectivity, so that the irradiance is equal in either direction, and the photocatalytic reaction medium as the medium of the suspension photocatalytic reaction, generally pure water or an aqueous solution.

It then defines three further effects: the self-degradation hydrogen production effect, where the reaction medium itself produces hydrogen under incident light with no catalyst added; the mechanical catalytic hydrogen production effect, where the medium and the photocatalyst produce hydrogen by mechanical means such as stirring without light; and the photothermal catalytic hydrogen production effect, obtained in the spectral section outside the intrinsic absorption of the photocatalyst and the characteristic absorption of the reaction medium, or under modulated incident light.

The draft on the page ends with that clause, so the test system, measurement content and calculation clauses themselves are not shown.

The standard was proposed and is managed by the National Hydrogen Energy Standardization Technical Committee (SAC/TC309); the page gives ICS 27.010 and the Chinese classification F19 and traces it to National Standard Announcement No. 26 of 2020. It was issued on 2020-11-19 and has applied since 2021-06-01.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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