期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 34, 页码 28868-28876出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b08768
关键词
AuNPs/MOGs (Fe) hybrids; catalysis; chemiluminescence; luminol; organophosphorus pesticides; detection
资金
- National Natural Science Foundation of China (NSFC) [21575117]
Until now, despite much progress in the study of metal organic gels (MOGs), the modification of transition-metal containing MOGs with noble metal nano particles (NPs) is far from fully developed. Herein, iron-based MOGs nanosheet hybrids with gold NPs (AuNPs) immobilization were first synthesized by a facile in situ grown strategy at ambient conditions. It is found that the as-prepared AuNPs/MOGs (Fe) hybrids exhibited enhanced mimicking peroxidase-like activity, making them endowed with outstanding performance in chemiluminescence (CL) field in the presence of H2O2. The remarkable CL enhancement by AuNPs/MOGs (Fe) hybrids was attributed to the modification of AuNPs on MOGs (Fe) nanosheets, which could synergistically accelerate the CL reaction by speeding up the generation of OH center dot, O-2(center dot-), and O-1(2). Accordingly, a sensitive CL detection of organophosphorus pesticides was successfully achieved by the AuNPs/MOGs (Fe) hybrids CL enhancing system in the range of 5-800 nM with a detection limit of 1 nM. We envision that this highly active and novel enzyme mimetic catalyst can be applicable to other extended AuNPs/MOGs (Fe) hybrid-based CL systems for sensitive detection of various analytes.
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