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o-Nitrophenol (o-NP) and tetracycline hydrochloride (TCH) residues in various aquatic environments are two environmental contaminants, which are seriously dangerous to both social safety and the environment. Detection of such species in a water system with one optical sensor is coveted for outdoor operation but has not been reported. Herein, we report the function synergistic strategy for the construction of a stable and luminescent hybrid copper­(I) iodine cluster-based sensor [Cu4I4(ETBT)4] (UJN-Cu2, ETBT = 2-ethylbenzo­[d]­thiazole). A custom-designed detecting cell for a solid sensor is used to detect the two types of contaminations. The pressed pellet of UJN-Cu2 is capable of photoluminescence distinguishing o-NP from its two isomers p-NP and m-NP, as well as TCH from commonly used antibiotics in aqueous solutions. Importantly, UJN-Cu2 represents the first bifunctional luminescence sensor for highly selective and sensitive detection of o-NP and TCH with a limit of detection (LOD) of 2.30 and 4.15 μM, respectively. Theoretical calculations and experimental results indicate that the charge transfer between Cu and ETBT is responsible for the excitation spectrum centered at 394 nm, which has a superior overlap with the absorptions of o-NP and TCH. The UJN-Cu2 pellet optical sensor has obvious advantages including being extremely easy to carry and use, dual-detection ability, and excellent recyclability and sensitivity, which make it is suitable for a long-time in-field outdoor detection application. The present work not only develops the first dual-detection optical sensor for nitroaromatics and antibiotics but also unveils the feasibility of the hybrid copper­(I) iodine cluster as a solid sensor in hunting environmental pollutants.

Replacing sluggish anodic oxygen evolution reaction with thermodynamically favorable hydrazine oxidation reaction (HzOR) is a powerful energy-saving approach for hydrogen production, and the efficiency of this process mainly relies on...

Electrochemical reformation of nitrate wastewater and poly(ethylene terephthalate) (PET) plastic waste into ammonia (NH 3 ) and fine chemicals is a sustainable strategy for waste resource utilization. Herein, a co-production system of ammonia and glycolic acid (GA, degradable polymer monomer) is constructed by coupling nitrate reduction and ethylene glycol (EG, in PET hydrolysate) oxidation. Low-crystalline CoOOH (LC-CoOOH/CF) and Pd nanothorns (Pd NTs/NF) grown in situ on the metal foam substrates are employed as cathode and anode, respectively. The high density of amorphous regions in LC-CoOOH/CF enables enhanced nitrate adsorption and provides abundant active sites, ultimately leading to an ammonia Faradic efficiency (FE) of 97.38 ± 1.0% at −0.25 V vs reversible hydrogen electrode (RHE). Meanwhile, the unique nanothorn morphology endows the Pd NTs/NF with a high-curvature tip, triggering a tip effect (TE) to promote the highly selective oxidation of EG to GA. Furthermore, in the two-electrode coupling system, the coproduction of NH 3 and GA is operated at a low energy consumption (onset voltage: 0.5 V), much lower than the traditional nitrate electrolysis process (1.4 V). This study provides a method for the resource utilization of nitrate wastewater and PET plastic waste to co-produce NH 3 and value-added chemicals.

Hybrid water electrolysis system composed of anodic urea oxidation reaction (UOR) and cathodic hydrogen evolution reaction (HER) has been regarded as a green and sustainable route to alleviate global energy...

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The design of electrocatalysts with favorable morphologies and surface compositions is an effective strategy to prepare electrocatalysts for hydrogen evolution reaction (HER). Herein, polyaniline (PANI) modified mesoporous ruthenium (Ru) film...