# A Novel Electrochemical Sensor Based on Ti3C2Tx MXene/Mesoporous Hollow Carbon Sphere Hybrid to Detect Bisphenol A

## TL;DR

This paper introduces a new electrochemical sensor using a Ti3C2Tx MXene and carbon sphere hybrid to detect the harmful chemical bisphenol A with high accuracy.

## Contribution

A novel Ti3C2Tx MXene/mesoporous hollow carbon sphere hybrid is developed for sensitive and accurate BPA detection.

## Key findings

- The sensor has a wide linear detection range of 10 to 200 μM for BPA.
- It achieves a low detection limit of 2.6 μM.
- The sensor successfully detects BPA in environmental water samples.

## Abstract

Bisphenol A (2,2-bis(4-hydroxyphenyl)propane, BPA), an endocrine-disrupting chemical with recognized adverse effects on human health and ecosystems, urgently requires convenient, sensitive, and accurate detection methods. In this study, a hierarchical heterostructure was fabricated by incorporating Ti3C2Tx MXene and mesoporous hollow carbon spheres (MHCs) to develop a high-performance electrochemical sensor for BPA. The nanocomposite was thoroughly characterized using SEM, TEM, and XRD, and then applied to modify a glassy carbon electrode (GCE). Under optimized conditions including pH and accumulation time, BPA detection was carried out via differential pulse voltammetry (DPV). The sensor exhibited a wide linear detection range from 10 to 200 μM and a low detection limit of 2.6 μM. Moreover, it was successfully applied to environmental water samples, demonstrating high accuracy and practicality for real-world BPA monitoring.