標(biāo)準(zhǔn)解讀

《GB/T 44234-2024 納米技術(shù) 納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量 諧振微質(zhì)量法》這一標(biāo)準(zhǔn)主要規(guī)定了利用諧振微質(zhì)量技術(shù)來測定納米材料與其表面吸附氣體之間的熱力學(xué)及動力學(xué)參數(shù)的方法、程序、設(shè)備要求和數(shù)據(jù)處理方法。此標(biāo)準(zhǔn)適用于研究納米尺度材料在不同氣體環(huán)境中的相互作用特性，對于理解納米材料的物理化學(xué)性質(zhì)、開發(fā)新材料及優(yōu)化相關(guān)應(yīng)用具有重要意義。

標(biāo)準(zhǔn)內(nèi)容概覽：

  1. 范圍：明確了該標(biāo)準(zhǔn)適用的納米材料類型及其與氣體分子在表界面作用時，如何通過諧振微質(zhì)量技術(shù)來測量相關(guān)的熱力學(xué)（如吸附焓、熵變）和動力學(xué)（如吸附速率常數(shù)、解吸動力學(xué)）參數(shù)。

  2. 規(guī)范性引用文件：列出了實施本標(biāo)準(zhǔn)時所依據(jù)或參考的其他國家標(biāo)準(zhǔn)或國際標(biāo)準(zhǔn)，確保測試方法的標(biāo)準(zhǔn)化和可比性。

  3. 術(shù)語和定義：對涉及的關(guān)鍵術(shù)語進(jìn)行了解釋，如諧振微質(zhì)量傳感器、吸附量、熱力學(xué)穩(wěn)定性等，以便讀者準(zhǔn)確理解標(biāo)準(zhǔn)內(nèi)容。

  4. 原理：闡述了諧振微質(zhì)量法的基本工作原理，即通過監(jiān)測納米材料吸附氣體前后諧振器頻率的變化，來推算吸附物質(zhì)的質(zhì)量變化，進(jìn)而計算出熱力學(xué)和動力學(xué)參數(shù)。

  5. 儀器設(shè)備與試劑：詳細(xì)描述了進(jìn)行此類測量所需的儀器設(shè)備規(guī)格、性能要求以及實驗中應(yīng)使用的氣體純度等，確保實驗結(jié)果的準(zhǔn)確性和重復(fù)性。

  6. 樣品制備與處理：規(guī)定了納米材料樣品的制備方法、處理步驟及必要的預(yù)處理條件，以保證測試樣品的代表性。

  7. 測量步驟與方法：詳細(xì)說明了實驗操作流程，包括傳感器的校準(zhǔn)、氣體環(huán)境的控制、數(shù)據(jù)采集周期、以及如何根據(jù)測量數(shù)據(jù)計算熱力學(xué)和動力學(xué)參數(shù)的具體算法。

  8. 數(shù)據(jù)處理與分析：提供了數(shù)據(jù)處理的標(biāo)準(zhǔn)化方法，包括如何校正背景信號、處理噪聲數(shù)據(jù)、以及如何通過數(shù)學(xué)模型擬合得到所需參數(shù)。

  9. 試驗報告：規(guī)定了試驗報告應(yīng)包含的信息內(nèi)容，如實驗條件、測試結(jié)果、數(shù)據(jù)分析及結(jié)論，確保實驗記錄的完整性和透明度。

實施意義：

該標(biāo)準(zhǔn)的出臺為納米材料與氣體相互作用的研究提供了一套統(tǒng)一、科學(xué)的測量方法，有助于促進(jìn)納米科技領(lǐng)域內(nèi)研究成果的共享與驗證，推動材料科學(xué)、環(huán)境保護(hù)、能源存儲與轉(zhuǎn)化等相關(guān)領(lǐng)域的技術(shù)創(chuàng)新與發(fā)展。


如需獲取更多詳盡信息，請直接參考下方經(jīng)官方授權(quán)發(fā)布的權(quán)威標(biāo)準(zhǔn)文檔。

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GB/T 44234-2024納米技術(shù)納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量諧振微質(zhì)量法_第1頁
GB/T 44234-2024納米技術(shù)納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量諧振微質(zhì)量法_第2頁
GB/T 44234-2024納米技術(shù)納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量諧振微質(zhì)量法_第3頁
GB/T 44234-2024納米技術(shù)納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量諧振微質(zhì)量法_第4頁
GB/T 44234-2024納米技術(shù)納米材料與氣體表界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量諧振微質(zhì)量法_第5頁

文檔簡介

ICS

17.200

CCS

A42

中華人民共和國國家標(biāo)準(zhǔn)

GB/T44234—2024

納米技術(shù)納米材料與氣體表界面作用

熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量

諧振微質(zhì)量法

Nanotechnology—Measurementofthermodynamicandkineticparametersof

interfaceinteractionbetweennanomaterialsandgases—Microgravimetric

analysismethod

2024-08-23發(fā)布2025-03-01實施

國家市場監(jiān)督管理總局發(fā)布

國家標(biāo)準(zhǔn)化管理委員會

GB/T44234—2024

目次

前言

·····································································································

Ⅲ

引言

·····································································································

Ⅳ

1

范圍

··································································································

1

2

規(guī)范性引用文件

······················································································

1

3

術(shù)語和定義

···························································································

1

4

符號

··································································································

2

5

方法原理

······························································································

3

5.1

諧振式微懸臂梁的工作原理

·····································································

3

5.2

熱力學(xué)參數(shù)與動力學(xué)參數(shù)的計算

································································

3

6

儀器和設(shè)備

···························································································

4

6.1

測試裝置

·························································································

4

6.2

動態(tài)配氣系統(tǒng)

····················································································

4

6.3

恒溫箱

···························································································

4

6.4

接口電路和控制系統(tǒng)

·············································································

5

6.5

諧振式微懸臂梁

·················································································

5

7

測試樣品和試劑

······················································································

5

7.1

測試樣品

·························································································

5

7.2

稀釋氣

···························································································

5

7.3

測試氣

···························································································

5

7.4

分散劑

···························································································

5

8

測試方法

······························································································

6

8.1

標(biāo)準(zhǔn)測試條件

····················································································

6

8.2

樣品涂覆

·························································································

6

8.3

樣品測試

·························································································

6

9

數(shù)據(jù)處理

······························································································

6

9.1

熱力學(xué)參數(shù)

······················································································

6

9.2

動力學(xué)參數(shù)─活化能Ea

·······································································

8

10

測試報告

····························································································

8

附錄A（資料性）介孔納米顆粒材料吸附熱力學(xué)參數(shù)的測量實例

···································

9

附錄B（資料性）納米材料吸附動力學(xué)參數(shù)的測量實例

············································

13

附錄C（資料性）測試報告格式

·····································································

16

參考文獻(xiàn)

································································································

17

Ⅰ

GB/T44234—2024

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機構(gòu)不承擔(dān)識別專利的責(zé)任。

本文件由中國科學(xué)院提出。

本文件由全國納米技術(shù)標(biāo)準(zhǔn)化技術(shù)委員會（SAC/TC279）歸口。

本文件起草單位：中國科學(xué)院上海微系統(tǒng)與信息技術(shù)研究所、國家納米科學(xué)中心、廈門海恩邁科技

有限公司、上海納米技術(shù)及應(yīng)用國家工程研究中心有限公司、同濟(jì)大學(xué)、中國計量科學(xué)研究院。

本文件主要起草人：李昕欣、許鵬程、于海濤、葛廣路、程鑫彬、何丹農(nóng)、任玲玲、朱君、金涵。

Ⅲ

GB/T44234—2024

引言

基于界面分子作用的功能納米材料，在信息獲取、生態(tài)環(huán)境、新能源和健康醫(yī)療等領(lǐng)域應(yīng)用十分廣

泛。本文件描述了一種利用諧振微懸臂梁作為核心測量工具的諧振微質(zhì)量法，目的是為納米材料與氣體

界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)的獲取提供一種標(biāo)準(zhǔn)的測量方法。該方法能夠有效避免傳統(tǒng)測量方法

的問題，獲得包括焓變、熵變、吉布斯自由能、活化能等在內(nèi)的熱力學(xué)參數(shù)和動力學(xué)參數(shù)，兼顧科學(xué)研

究和產(chǎn)業(yè)應(yīng)用的需求。

Ⅳ

GB/T44234—2024

納米技術(shù)納米材料與氣體表界面作用

熱力學(xué)參數(shù)和動力學(xué)參數(shù)測量

諧振微質(zhì)量法

1范圍

本文件描述了基于諧振微質(zhì)量法獲得納米材料與氣體界面作用熱力學(xué)參數(shù)和動力學(xué)參數(shù)的方法，包

括方法原理、儀器和設(shè)備、測試樣品和試劑、測試方法、數(shù)據(jù)處理、測試報告。

本文件適用于熱力學(xué)參數(shù)與動力學(xué)參數(shù)的測量，包括標(biāo)準(zhǔn)焓變（ΔH°）、標(biāo)準(zhǔn)熵變（ΔS°）、標(biāo)準(zhǔn)吉

布斯自由能變（ΔG°）、活化能（Ea）等。

2規(guī)范性引用文件

下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文

件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用

于本文件。

GB/T2298—2010機械振動、沖擊與狀態(tài)監(jiān)測詞匯

GB/T13464—2008物質(zhì)熱穩(wěn)定性的熱分析試驗方法

GB/T21650.2—2008壓汞法和氣體吸附法測定固體材料孔徑分布和孔隙度第2部分：氣體吸

附

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