Control of pore structure and surface chemistry of activated carbon derived from waste Zanthoxylum bungeanum branches for toluene removal in air
发布时间：2024-12-01
点击次数：
- 影响因子：
- 4.223
- DOI码：
- 10.1007/s11356-020-09115-2
- 所属单位：
- 重庆工商大学
- 发表刊物：
- Environmental Science and Pollution Research
- 项目来源：
- 重庆市科技局，重庆工商大学
- 关键字：
- Waste biomass；Activated carbon adsorbent；Micro-mesopore structure；Toluene removal；Regeneration
- 摘要：
- Activated carbon adsorption has been considered the most efficient technology toward VOC removal. The waste biomass as alternates solved the problems of high price and nonrenewable of traditional raw materials. The waste Zanthoxylum bungeanum branches were firstly selected as raw materials to prepare activated carbons. Interestingly, the pore structure and surface chemistry can be successfully controlled by adjusting the heating rate. The hierarchical porous carbons exhibited great potential for toluene adsorption. The micro-mesopore structure possessed unique spatial effect; micropores played a dominant role in adsorption process, especially narrow micropores (pore size ≤ 1.0 nm) emerged stronger adsorptive force toward toluene molecules due to overlapping attractive forces from neighboring pore walls. And mesopores not only displayed excellent transport diffusion but also provided adsorption sites. Additionally, the high graphitization degree enhanced the interaction between graphene layer equipped electron-rich regions and π-electrons on the aromatic ring by the π-π conjugated effect. The hydroxyl and carbonyl functional groups served as chemisorption sites and led to higher adsorption amounts. Fortunately, the regeneration can be achieved by thermal treatment at the low temperature (≤ 150 °C) or even gas purging at room temperature (20 °C), which avoided an explosion accident in the process of high-temperature regeneration.
- 第一作者：
- Bingman Lei
- 合写作者：
- Hongmei Xie,Shengming Chen,Biyan Liu
- 论文类型：
- 源刊论文
- 通讯作者：
- Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 27
- 页面范围：
- 27072–27092
- 是否译文：
- 否
- 发表时间：
- 2020-01-01
- 收录刊物：
- SCI