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Fig. 1 | Journal of Nanobiotechnology

Fig. 1

From: A continuously efficient O2-supplying strategy for long-term modulation of hypoxic tumor microenvironment to enhance long-acting radionuclides internal therapy

Fig. 1

Characterizations, CAT-like activity and NIR-II photothermal property of Pd@Au-PEG NSs. (a) TEM image of Pd@Au-PEG NSs (Scale bar = 50 nm). (b) Element mapping analysis of Pd@Au-PEG NSs (Scale bar = 20 nm). (c) AFM image and the thickness measurement of Pd@Au-PEG NSs. (e) The UV-Vis-NIR absorption spectrum of Pd@Au-PEG NSs. (d) Schematic diagram of mechanism regarding the enzymatic activity and photothermal responsiveness of Pd@Au-PEG NSs. (e) CAT-like activity of Pd@Au-PEG NSs and their property of continuously decomposing H2O2 for O2 evolution with repeated H2O2 addition. (f) NIR-II surface plasmon resonance-boosted enzymatic activity of Pd@Au-PEG NSs. (g) Photothermal stability of Pd@Au-PEG NSs. (h) Infrared thermal images of saline (control group) and Pd@Au-PEG NSs solution under the excitation of NIR-II laser (1064 nm, 0.3 W cm− 2)

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Journal of Nanobiotechnology

ISSN: 1477-3155

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