异质结
催化作用
材料科学
芬顿反应
导带
纳米技术
化学工程
电子
化学
光电子学
物理
有机化学
工程类
量子力学
作者
Yong Kang,Zhuo Mao,Ying Wang,Chao Pan,Meitong Ou,Hanjie Zhang,Weiwei Zeng,Xiaoyuan Ji
标识
DOI:10.1038/s41467-022-30166-1
摘要
Abstract Limited substrates content is a major hurdle dampening the antitumor effect of catalytic therapy. Herein, a two-dimensional interplanar heterojunction (FeOCl/FeOOH NSs) with ·OH generation under ultrasound irradiation is fabricated and utilized for catalytic cancer therapy. This interplanar heterojunction is prepared through replacing chlorine from iron oxychloride with hydroxyl. Benefiting from the longer hydroxyl bond length and enhanced affinity with water, the alkali replacement treatment integrates interplanar heterojunction synthesis and exfoliation in one step. In particular, a build-in electric field facilitated Z-scheme interplanar heterojunction is formed due to the aligning Fermi levels. The holes on the valence band of FeOCl have great ability to catalyze O 2 evolution from H 2 O, meanwhile, the generated O 2 is immediately and directly reduced to H 2 O 2 by the electrons on the conductive band of FeOOH. The self-supplying H 2 O 2 ability guarantees efficient ·OH generation via the Fenton-like reaction catalyzed by FeOCl/FeOOH NSs, which exhibits excellent anti-tumor performance.
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