AS-101

Developing highly efficient bimetallic metal-organic frameworks (MOFs) as catalysts for Fenton-like reactions holds significant promise for decontamination processes. Although MOFs with excellent decontamination capabilities are achievable, ensuring their long-term stability, especially in the organoarsenic harmless treatment, remains a formidable challenge. Herein, we proposed a unique nanoconfinement strategy using graphene oxide (GO)-supported Prussian blue analogs (PBA) as catalytic membrane, which modulated the peroxymonosulfate (PMS) activation in p-arsanilic acid (p-ASA) degradation from traditional radical pathways to a synergy of both radical and non-radical pathways. This dual-pathway activation with sulfate radicals (SO₄^•-) and singlet oxygen (¹O₂) was a significant advancement, ensuring the exceptionally high reactivity and stability for over 80 h of continuous membrane operation. The PBA@GO membrane achieved a degradation rate constant of 0.79 ms^-1, with an increase of four orders of magnitude compared to the nonconfined PBA@GO composites, while ensuring comprehensive arsenic removal ensuring comprehensive arsenic removal and demonstrating remarkably efficient total organic carbon elimination (92.2 % versus 57.6 % in 20 min). The PBA@GO membrane also showed excellent resistance towards inorganic ions, humic acid, and complex water matrices. This facile and universal strategy paves the way for the fabrication of MOFs-based catalytic membranes for optimizing performance in arsenic pollution treatment.

Improper abuse of roxarsone (ROX) in industrial production leads to harmful effects on water, soil, food, and living creatures.It is significant to detect its concentration in the environment and biosystem.Herein, two aggregation-induced emission (AIE)-active fluorescence probes, TPE-TPE and TPE-TPE-CN, are successfully synthesized via a sulfur (VI) fluoride exchange (SuFEx) click reaction and first employed to detect ROX in the environment and living 3T3 cells.These two probes can selectively detect ROX in water due to the synergistic effect of photoinduced electron transfer (PET) and fluorescence resonance energy transfer (FRET) between the probes and ROX.The detection limit of TPE-TPE and TPE-TPE-CN is 0.154 and 0.385 μmol/L, resp., much lower than the safety concentration stipulated by the World Health Organization (WHO).In addition, with the aid of a color discrimination application in a smartphone, these two probes can also detect ROX in real samples (such as water, soil, and cabbage), demonstrating their excellent potential for monitoring ROX in a practical environment.