Plasmonic Nanozyme of Graphdiyne Nanowalls Wrapped Hollow Copper Sulfide Nanocubes for Rapid Bacteria-Killing
Hits:
Key Words:NANOCRYSTALS
Abstract:Plasmon stimulation represents an appealing way to modulate enzyme mimic functions, but utilization efficiency of plasmon excitation remains relatively low. To overcome this drawback, a heterojunction composite based on graphdiyne nanowalls wrapped hollow copper sulfide nanocubes (CuS@GDY) with strong localized surface plasmon resonance (LSPR) response in the near-infrared (NIR) region is developed. This nanozyme can concurrently harvest LSPR induced hot carriers and produce photothermal effects, resulting in dramatically increased peroxidase-like activity when exposed to 808 nm light. Both experimental results and theoretical calculations show that the remarkable catalytic performance of CuS@GDY is due to the unique hierarchical structure, narrow bandgap of GDY nanowalls, LSPR effect of CuS nanocages, fast interfacial electron transfer dynamics, and carbon vacancies on CuS@GDY. This plasmonic nanozyme exhibits rapid, efficient, broad-spectrum antibacterial activity (>99.999%) against diverse pathogens (methicillin-resistant Staphylococcus aureus, Staphylococcus aureus, and Escherichia coli). This study not only sheds light on the mechanism of the nanozyme-/photocatalysis coupling process, but also opens up a new avenue for engineering plasmonic NIR light driven nanozymes for rapid synergistic photothermal and photo-enhanced nanozyme therapy.
Volume:32
Issue:20
Translation or Not:no
-
|
Email:5d646cbafce1a16d91ae5b861671baa6bcb9fcf18e038fa823e2a0f59fe44b1f9cec34d09063cdba959c2cbc9e9d13ca9ec4216d98b8328de5cc2d2996961a0776f720147a3790aedb6b61529112d7b40123058706466f80bfb3b4b6419ef1247d74811afcec934cbfef695599ec8eaa9e0c247458215d7dcb7d6cc9b7d17714
Telephone:759882d5c02d6c6d8a1dd3801e31b7013e5024d959c5deea3230ae11bff3ea31cb08ecef65a51d415ebd42629db1ef892ff4d5e2d45116defcb5e90ee37b15b8c359c2aabefb74cbac1d28233b9fe9c3988174ef3e14321f1a0fa216fadf3e9af21f835114e78f442045a4a8b9b46e4bc4aea61800b9e373e51fce0593551e24
|