Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/134932
Title: SEMICONDUCTOR-BASED NANOMATERIALS FOR PHOTOCATALYTIC ORGANIC DEGRADATION
Authors: DONG WENHAO
Keywords: Semiconductor, nanomaterial, photocatalyst, photodegradation, CdS@TiO2, niobic acid
Issue Date: 5-Aug-2016
Source: DONG WENHAO (2016-08-05). SEMICONDUCTOR-BASED NANOMATERIALS FOR PHOTOCATALYTIC ORGANIC DEGRADATION. ScholarBank@NUS Repository.
Abstract: Over the past a few decades, great efforts have been devoted to the design and development of nanostructured semiconductor photocatalysts due to their promising applications in energy and environment. The photocatalytic performance of a semiconductor nanomaterial is closely related to its morphology and structure. This thesis presents a series of nanostructured photocatalysts which are synthesized by facial and environment friendly methods. These photocatalysts include three-dimensional hierarchical niobic acid microflowers assembled from two-dimensional ultrathin nanosheets, one-dimensional CdS nanorods coating with a controllable thickness of amorphous TiO2 shells, and anatase TiO2 nanobelts exposed with 75% clean {100} facets. By using methyl blue, rhodamine B, and phenol molecules as probes, these as-prepared nanomaterials exhibit improved photocatalytic activities under UV or visible light irradiation. Their enhanced photocatalytic performances could be attributed to their unique structural features, which are beneficial for the separation of photogenerated charge carriers.
URI: http://scholarbank.nus.edu.sg/handle/10635/134932
Appears in Collections:Ph.D Theses (Open)

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