A non-heat-source process for preparing graphene oxide with low energy consumption

作者全名："Xiong, Bingxue; Zou, Xuefeng; Wei, Shicheng; Wang, Bo; Liang, Yi; Jiang, Wencai; Xiang, Bin; Deng, Mingsen; Zheng, Helin"

作者地址："[Xiong, Bingxue; Xiang, Bin] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China; [Xiong, Bingxue; Xiang, Bin] Chongqing Yuanhao Technol Co Ltd, Chongqing 400044, Peoples R China; [Zou, Xuefeng; Jiang, Wencai; Deng, Mingsen] Guizhou Educ Univ, Guizhou Prov Key Lab Computat Nanomat Sci, Guiyang 550018, Peoples R China; [Wei, Shicheng; Wang, Bo; Liang, Yi] Acad Armored Force Engn, Natl Key Lab Remfg, Beijing 100072, Peoples R China; [Xiong, Bingxue; Zheng, Helin] Childrens Hosp Chongqing Med Univ, Natl Clin Res Ctr Child Hlth & Disorders, Dept Radiol, Chongqing 400014, Peoples R China"

通信作者："Xiang, B (通讯作者)，Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China.; Xiang, B (通讯作者)，Chongqing Yuanhao Technol Co Ltd, Chongqing 400044, Peoples R China.; Deng, MS (通讯作者)，Guizhou Educ Univ, Guizhou Prov Key Lab Computat Nanomat Sci, Guiyang 550018, Peoples R China.; Zheng, HL (通讯作者)，Childrens Hosp Chongqing Med Univ, Natl Clin Res Ctr Child Hlth & Disorders, Dept Radiol, Chongqing 400014, Peoples R China."

来源：DALTON TRANSACTIONS

ESI学科分类：CHEMISTRY

WOS号：WOS:000907958900001

JCR分区：Q2

影响因子：3.5

年份：2023

卷号：52

期号：5

开始页：1268

结束页：1276

文献类型：Article

关键词：　

摘要："As the most widely used method for preparing graphene oxide (GO), Hummers' method always involves a key step, that is adding water to concentrated sulfuric acid. We found that if this process is cancelled, the oxidation degree of GO will be significantly reduced. This means that the heat released during concentrated sulfuric acid dilution will promote further oxidation of GO. In this paper, we fully utilize the heat released during concentrated sulfuric acid dilution to develop a new non-heat-source process without any low-/high-temperature auxiliar, exponentially reducing the energy consumption and largely avoiding the frequent temperature control. The result shows that GO prepared by Hummers' method and that prepared by the proposed process show a similar structure, composition, morphology, and defect degree. Meanwhile, the corresponding reduced GO (rGO) obtained after reduction shows similar capacitive behavior. Their specific capacitances are 243.6 F g(-1) and 240.3 F g(-1) at 1 A g(-1), respectively, and they both have a long-term cycling performance (with a 100% capacitance retention after 10 000 cycles at 30 A g(-1)). This study provides a new strategy for the preparation of GO with low energy consumption."

基金机构：Growth Project of Young Scientific and Technological Talents in Colleges and University of Guizhou Province; Guizhou Provincial Science and Technology Projects; Reward and Subsidy Fund Project of Guizhou Education University; [QKHHKYZi [2021]252]; [QKHJC-ZK[2021]YB057]; [Z20210108]

基金资助正文："This work was supported by the Growth Project of Young Scientific and Technological Talents in Colleges and University of Guizhou Province (no. QKHHKYZi [2021]252), Guizhou Provincial Science and Technology Projects (no. QKHJC-ZK[2021]YB057) and the Reward and Subsidy Fund Project of Guizhou Education University (no. Z20210108)."