True density of nanoporous carbon fabricated from rice husk

True density of nanoporous carbon fabricated from rice husk
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稻壳纳米多孔碳的真实密度

DOI:
10.1016/j.measurement.2020.108627
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发表时间:
2021
期刊:
影响因子:
5.6
通讯作者:
Saitoh Hidetoshi
Saitoh Hidetoshi
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhu Jie;Komatsu Keiji;Li Heng;Kudo Yuto;Okuda Rui;Ishibashi Yoshikuni;Yamada Takumi;Toda Ikumi;Ohshio Shigeo;Tuda Yoshinori;Saitoh Hidetoshi

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由于纳米孔碳材料对氦的吸附作用,其真实密度的准确估计是研究纳米孔碳材料的一个基本问题。在这项研究中,我们开发了一种基于气体等体积膨胀法测量稻壳制作的NPC真密度的方法。该方法考虑了npc对氦的吸附。结果表明,以比表面积为2986 m2/g的稻壳为原料制备的NPC,其真密度为2.095 g/cm3。相比之下,使用商业氦取代法,测得的真实密度为2.437 g/cm3。所提方法的平均标准差值为0.015 ~ 0.027,而商业化氦取代法的平均标准差值为0.024 ~ 0.138。结果表明,该方法可准确测定非甾体的真实密度。
The accurate estimation of true density is a fundamental problem for nanoporous carbon (NPC) materials because of helium adsorption. In this study, we developed a method for measuring the true density of NPC fabricated from rice husks based on a gas constant-volume expansion method. The proposed method considers helium adsorption on NPCs. The obtained results indicated that NPC fabricated from rice husk with a 2986 m2/g specific surface area has a true density of 2.095 g/cm3as determined by the proposed method. In contrast, using the commercial helium-substituted method, the true density was measured as 2.437 g/cm3. The average standard deviation values using the proposed method were 0.015–0.027, whereas those using the commercial helium-substituted method were 0.024–0.138. These results indicated that accurate determination of the true density of NPCs was accomplished by the proposed method.
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