A novel hierarchical porous biochar based on ZIF-8 volatile hard template with high-efficiency electrochemical sensing performance for trace determination of Ponceau 4R

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL Microchimica Acta Pub Date : 2025-01-15 DOI:10.1007/s00604-025-06960-1

Qi Yu, Jing Zhou, Wenhai Wang, Rumin Fu, Wentao Yan, Hui Chen, Yansha Gao, Guorong Fan, Linyu Wang, Zongde Wang, Limin Lu

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Abstract

A convenient method is proposed using a heat-treatable volatile template to prepare hierarchical porous biochar (HPB). Litsea cubeba leaves and ZIF-8 served as carbon source and volatile hard template, respectively. The good compatibility between ZIF-8 and biomass facilitated their uniform dispersion, and the thermal decomposition of ZIF-8 created abundant pores in the HPB. By using ZIF-8 with different sizes as “modulators”, the textural properties of HPB can be controlled. The HPB derived from 200 nm-sized ZIF-8 exhibited ultra-high specific surface area, rich macro-meso-micro porous structure, and excellent electrocatalytic activity, which makes HPB-200 an effective electrochemical sensing platform. The sensor demonstrated an ultralow detection limit (0.2 nM) of Ponceau 4R, showing significant application potential in the field of electroanalytical sensing.

Graphical Abstract

Schematic illustration of a convenient method using a heat-treatable volatile template to prepare hierarchical porous biochar (HPB)

Abstract Image

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基于ZIF-8挥发性硬模板的高效电化学传感层次化多孔生物炭用于痕量Ponceau 4R的测定

提出了一种利用可热处理挥发性模板制备层叠多孔生物炭的简便方法。山苍子叶和ZIF-8分别作为碳源和挥发性硬模板。ZIF-8与生物质的良好相容性使其分散均匀，热分解后在HPB中形成丰富的孔隙。利用不同尺寸的ZIF-8作为“调制器”，可以控制HPB的织构性能。以200 nm尺寸的ZIF-8为原料制备的HPB具有超高比表面积、丰富的宏、介孔结构和优异的电催化活性，是一种有效的电化学传感平台。该传感器具有Ponceau 4R的超低检测限（0.2 nM），在电分析传感领域具有重要的应用潜力。摘要利用可热处理的挥发性模板制备分层多孔生物炭（HPB）的简易方法示意图

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来源期刊

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.