標題: | Marimo-Bead-Supported Core-Shell Nanocomposites of Titanium Nitride and Chromium-Doped Titanium Dioxide as a Highly Efficient Water-Floatable Green Photocatalyst |
作者: | Kaur, Manpreet Shinde, Satish Laxman Ishii, Satoshi Jevasuwan, Wipakorn Fukata, Naoki Yu, Min-Wen Li, Yunxiang Ye, Jinhua Nagao, Tadaaki 照明與能源光電研究所 Institute of Lighting and Energy Photonics |
關鍵字: | photocatalysis;titanium dioxide;titanium nitride;core-shell;alginate |
公開日期: | 15-七月-2020 |
摘要: | The release of untreated industrial wastewater creates a hazardous impact on the environment. In this regard, the development of an environmentally friendly catalyst is of paramount importance. Here, we report a highly efficient and reusable core-shell TiN/SiO2/Cr-TiO2 (TSCT) photocatalyst that is composed of SiO2-cladded titanium nitride (TiN) nanoparticles (NPs) decorated with Cr-doped TiO2 NPs for the removal of organic contaminants from water. The TiN NPs serve as the main light absorber component with excellent visible-light absorption along with Cr-TiO2 NPs. The TSCT shows remarkable improvement in the photodecomposition of methylene blue (MB) over Cr-TiO2 and TiO2 NPs. An efficient structural design is proposed by adopting calcium alginate beads (P-Marimo beads) as a transparent scaffold for supporting our TSCT, which floats nature on the water surface and realizes easy handling as well as excellent reusability for multipurpose water purification. Surprisingly, our TSCT is found to keep its catalytic activity even after the illumination is turned off. Our proposed P-Marimo-encapsulated TSCT can be utilized as an excellent green photocatalyst with high photocatalytic performance, good recyclability, and easy handling. |
URI: | http://dx.doi.org/10.1021/acsami.0c03781 http://hdl.handle.net/11536/155157 |
ISSN: | 1944-8244 |
DOI: | 10.1021/acsami.0c03781 |
期刊: | ACS APPLIED MATERIALS & INTERFACES |
Volume: | 12 |
Issue: | 28 |
起始頁: | 31327 |
結束頁: | 31339 |
顯示於類別: | 期刊論文 |