A photoelectrochemical sensor based on type-II heterojunction g-CN/CuTCPP for voltage/light synergistic regulation of GLY adsorption/desorption.

Glyphosate (GLY) is a widely used herbicide, and its potential health and environmental risks require the establishment of efficient residue detection techniques. In the design of photoelectrochemical (PEC) sensors based on CuTCPP, it is necessary to increase the visible light absorption efficiency and promote the separation of photogenerated electron-hole, as well as balance the adsorption and desorption of GLY to maintain excellent reversibility and responsiveness. In this work, the synergistic effect of type-II heterojunction g-CN/CuTCPP on the dynamic conversion of copper sites under illumination and applied voltage is explored for the first time and a portable glyphosate detection device is designed to meet the practical application requirements.

A Janus Fabric with Hexagonal Microcavity Channels for Efficient Urine Transport and Accurate Physiological Monitoring.

The current research on wearable electrochemical sensors for urine monitoring is relatively rare, which is primarily limited by the lack of an active management mechanism to effectively manipulate the transportation of excessive liquids. In this work, a Janus fabric with hexagonal microcavity channels (HMJ-FT) was assembled based on a disposable facial towel, which was further introduced to develop the wearable electrochemical sensor (HMJ-Sensor) for the directional manipulation of urine transportation and simultaneous detection of dopamine (DA) and uric acid (UA). The designed hexagonal microcavity structure can synergistically promote horizontal migration and vertical transport of liquid, thus ensuring efficient and rapid manipulation of urine transportation and preventing its accumulation and reflux, which are essential for accurate, real-time monitoring.