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

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

doi:10.1007/s00604-025-06960-1

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

Mikrochim Acta. 2025 Jan 15;192(2):84. doi: 10.1007/s00604-025-06960-1.

Authors

Qi Yu^{1

2}, Jing Zhou², Wenhai Wang², Rumin Fu², Wentao Yan², Hui Chen², Yansha Gao², Guorong Fan¹, Linyu Wang³, Zongde Wang⁴, Limin Lu^{5

6}

Affiliations

¹ Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
² Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
³ Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. [email protected].
⁴ Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. [email protected].
⁵ Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. [email protected].
⁶ Key Laboratory of Chemical Utilization of Plant Resources of Nanchang, College of Chemistry and Materials, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China. [email protected].

PMID: 39812860
DOI: 10.1007/s00604-025-06960-1

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.

Keywords: Differential pulse voltammetry; Electrochemical detection; Hierarchically porous biochar; Ponceau 4R; Volatile hard template.

Abstract

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