Optimizing the Micro/Mesoporous Structure of Hierarchical Porous Carbon Synthesized from Petroleum Pitch Using the Solvent-Free Method for Ultra-Fast Capacitive Deionization

Guan Wen Liu, Chen Shiuan Fan, Chun Han Hsu, Chia Hung Hou, Hong Ping Lin

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

In this work, a solvent-free ZnO-Template method is used to synthesize hierarchical porous carbons (denoted as HPC-X; X = 1, 1.5, 2, and 4 g of ZnO) via the pyrolysis of petroleum industrial-residual pitch with ZnO. The proposed method allows precise control of the micro/meso/macroporous structure of the HPC by adjusting the amount of ZnO. The results show that the average pore size of HPCs prominently increases from 2.4 to 3.7 nm with the increase in the ZnO/pitch ratio. In addition, it is shown that HPCs have a high surface area between 1141 and 1469 m2g-1, a wide-range pore size distribution (micro-, meso-, and macropores), and a tap density ranging from 0.2 to 0.57 g cm-3. The capacitive deionization performances of HPCs for sodium and chloride ions are investigated. The results show that HPC-2 exhibits the highest electrosorption capacity of 9.94 mg g-1within 10.0 min and a maximum electrosorption capacity of 10.62 mg g-1at 1.2 V in a 5.0 mM NaCl solution. Hence, HPC-2 is a highly promising candidate as an electrode material for rapid deionization.

原文English
頁(從 - 到)47610-47618
頁數9
期刊ACS Omega
7
發行號51
DOIs
出版狀態Published - 2022 12月 27

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 一般化學工程

指紋

深入研究「Optimizing the Micro/Mesoporous Structure of Hierarchical Porous Carbon Synthesized from Petroleum Pitch Using the Solvent-Free Method for Ultra-Fast Capacitive Deionization」主題。共同形成了獨特的指紋。

引用此