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The selective deposition of silver nanoparticles onto {101} facets of TiO2 nanocrystals with co-exposed {001}/{101} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination
Sun, Dechen; Yang, Weiyi; Zhou, Long; Sun, Wuzhu; Li, Qi; Shang, Jian Ku; qiliuiuc@gmail.com
2016
发表期刊APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
卷号182页码:85-93
摘要Highly efficient photocatalytic reduction of environmental pollutants requires the enrichment of photogenerated electrons on the photocatalyst's surface. Thus, proper material design and modification are needed to efficiently separate photogenerated electron/hole pairs and achieve their oriented migrations for the enrichment of photogenerated electrons on their surface. In this work, a modified photo-deposition process was developed which successfully deposited silver nanoparticles selectively on {1 0 1} facets of TiO2 nanocrystals with co-exposed {0 0 1}/{1 0 1} facets. The synergistic effect of crystal facet engineering and the selective deposition of silver nanoparticles on {1 0 1} facets largely enhanced the separation of photogenerated carriers and enriched the presence of photo-generated electrons onto the surface of TiO2 to a net negative-charged surface. A strong photocatalytic reduction capability of the sample was demonstrated by its superior photocatalytic reduction activity on aqueous nitrate under a simulated solar illumination. The removal ratio of aqueous nitrate reached similar to 95%, and most of the reduction product was the desirable N-2 with the selectivity over 90%. These TiO2 nanocrystal with co-exposed {0 0 1}/{1 0 1} facets and silver modification on {1 0 1} facets could also effectively remove both nitrate and various organic pollutants from water simultaneously. (C) 2015 Elsevier B.V. All rights reserved.
部门归属[sun, dechen ; yang, weiyi ; zhou, long ; sun, wuzhu ; li, qi] chinese acad sci, shenyang natl lab mat sci, inst met res, environm funct mat div, shenyang 110016, peoples r china ; [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa
关键词Photocatalytic Reduction Tio2 Nanocrystals With Co-exposed {001}/{101} Facets Selective Deposition Of Ag Nanoparticles Aqueous Nitrate Removal Solar Illumination
资助者National Natural Science Foundation of China [51102246]; Knowledge Innovation Program of Institute of Metal Research, Chinese Academy of Sciences [Y0N5A111A1]; Youth Innovation Promotion Association, Chinese Academy of Sciences [Y2N5711171]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry, PR China; Basic Science Innovation Program of Shenyang National Laboratory for Materials Science [Y4N56R1161]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75207
专题中国科学院金属研究所
通讯作者qiliuiuc@gmail.com
推荐引用方式
GB/T 7714
Sun, Dechen,Yang, Weiyi,Zhou, Long,et al. The selective deposition of silver nanoparticles onto {101} facets of TiO2 nanocrystals with co-exposed {001}/{101} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,182:85-93.
APA Sun, Dechen.,Yang, Weiyi.,Zhou, Long.,Sun, Wuzhu.,Li, Qi.,...&qiliuiuc@gmail.com.(2016).The selective deposition of silver nanoparticles onto {101} facets of TiO2 nanocrystals with co-exposed {001}/{101} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination.APPLIED CATALYSIS B-ENVIRONMENTAL,182,85-93.
MLA Sun, Dechen,et al."The selective deposition of silver nanoparticles onto {101} facets of TiO2 nanocrystals with co-exposed {001}/{101} facets, and their enhanced photocatalytic reduction of aqueous nitrate under simulated solar illumination".APPLIED CATALYSIS B-ENVIRONMENTAL 182(2016):85-93.
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