期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 25, 页码 21089-21093出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b07770
关键词
biomimetic catalyst; organophosphorus hydrolase; nerve agents; graphene oxide; synergistic effect
资金
- National Natural Science Foundation of China [21275097]
- Fundamental Research Fund for the Central Universities [GK201602010]
- 111 Project [B14041]
Recent global military events, such as the conflict in Syria, have emphasized the need to find effective strategies to rapidly destroy organophosphorus-based nerve agents. In this work, we designed active site-engineered graphene oxide (GO) via polymerization (polymer bead-GOs) as organophosphorus hydrolase (OPH) mimetic hotspots for the rapid degradation of nerve agents. This hybrid catalyst has a high total turnover frequency value of 0.65 s(-1) and good stability (94.8% activity maintained after 5 cycles). Mechanism investigations suggested that the high catalytic performance could be attributed to the synergistic effect among the clusters of imidazole and the presence of - COOH groups on the GO surface and Zn2+.
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