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Achieving Exceptional Photocatalytic Activity and Selectivity through a Well‐Controlled Short‐Ordered Structure: A Case Study of Na x TaO y ⋅ n H 2 O
Author(s) -
Su Yiguo,
Lang Junyu,
Du Chunfang,
Bian Fenggang,
Wang Xiaojing
Publication year - 2015
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201500128
Subject(s) - photocatalysis , catalysis , reactivity (psychology) , transmission electron microscopy , selectivity , scattering , materials science , synchrotron radiation , crystallography , synchrotron , chemistry , nanotechnology , physics , optics , organic chemistry , medicine , alternative medicine , pathology
The present work reports the preparation of a short‐ordered Na x TaO y ⋅ n H 2 O catalyst that exhibits exceptional and highly efficient photocatalytic reactivity toward aerobic oxidation relative to its crystalline counterpart. Synchrotron radiation wide‐angle X‐ray scattering and transmission electron microscopy results indicated that the as‐synthesized catalyst shows short‐ordered features with well‐controlled short‐range ordering limits and defect chemistry. The short‐ordered structure of Na x TaO y ⋅ n H 2 O predicted large amounts of defective centers and high surface areas that may play critical roles in visible‐light harvesting and photocatalytic aerobic oxidation. This work may provide a novel strategy for the development of short‐ordered catalytic systems with well‐controlled defect chemistry that exhibit highly efficient photocatalytic properties.