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Title: Photocatalytic pure water splitting with high efficiency and value by Pt/porous brookite TiO2 nanoflutes

Abstract

We report the remarkable production of H2 and H2O2 from pure water using porous brookite TiO2 nanoflutes decorated with Pt nanoparticles through two-electron photocatalytic intermediate water splitting (PIWS). The H2 production rate from deionized water (pH similar to 7.0) was 9.8 +/- 0.6 $$\mu$$mol mg-1h-1, more than 12-fold and 230-fold higher than the reported TiO2-based photocatalytic overall water splitting (POWS) and H2/H2O2 production systems, respectively. The apparent quantum yields (AQY) value can achieve 43.4%, which is the highest value compared with the reported TiO2-based POWS systems and the commercial value for PIWS is similar to 9-fold higher than that for POWS even ignoring the separation cost. The mechanism of the distinct performance was confirmed by DFT and experimental measurements. The present work provides a feasible strategy to significantly improve the process efficiency and value of photocatalytic water splitting in both pure water and seawater using natural sunlight.

Authors:
 [1];  [2];  [2]; ORCiD logo [3];  [1];  [1];  [4];  [4];  [5]; ORCiD logo [3]; ORCiD logo [6];  [7];  [5];  [1]
  1. National Center for Nanoscience and Technology, Beijing (China). CAS Key Lab. of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience
  2. National Synchrotron Radiation Research Center, Hsinchu (Taiwan)
  3. Chinese Academy of Sciences (CAS), Beijing (China). CAS Key Lab. for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology
  4. Central South Univ., Changsha, Hunan (China)
  5. Univ. of Missouri, Kansas City, MO (United States)
  6. Central South Univ., Changsha, Hunan (China). State Key Lab. of Powder Metallurgy
  7. Northern Illinois Univ., DeKalb, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of the Republic of China (MOST); National Science Foundation (NSF); USDOE Office of Science (SC)
OSTI Identifier:
1616031
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nano Energy
Additional Journal Information:
Journal Volume: 67; Journal Issue: C; Journal ID: ISSN 2211-2855
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; hydrogen peroxide; hydrogen production; photocatalytic water splitting; porous brookite TiO2 nanoflutes; seawater

Citation Formats

Cao, Shuang, Chan, Ting-Shan, Lu, Ying-Rui, Shi, Xinghua, Fu, Bing, Wu, Zhijiao, Li, Hongmei, Liu, Kang, Alzuabi, Sarah, Cheng, Ping, Liu, Min, Li, Tao, Chen, Xiaobo, and Piao, Lingyu. Photocatalytic pure water splitting with high efficiency and value by Pt/porous brookite TiO2 nanoflutes. United States: N. p., 2019. Web. https://doi.org/10.1016/j.nanoen.2019.104287.
Cao, Shuang, Chan, Ting-Shan, Lu, Ying-Rui, Shi, Xinghua, Fu, Bing, Wu, Zhijiao, Li, Hongmei, Liu, Kang, Alzuabi, Sarah, Cheng, Ping, Liu, Min, Li, Tao, Chen, Xiaobo, & Piao, Lingyu. Photocatalytic pure water splitting with high efficiency and value by Pt/porous brookite TiO2 nanoflutes. United States. https://doi.org/10.1016/j.nanoen.2019.104287
Cao, Shuang, Chan, Ting-Shan, Lu, Ying-Rui, Shi, Xinghua, Fu, Bing, Wu, Zhijiao, Li, Hongmei, Liu, Kang, Alzuabi, Sarah, Cheng, Ping, Liu, Min, Li, Tao, Chen, Xiaobo, and Piao, Lingyu. Wed . "Photocatalytic pure water splitting with high efficiency and value by Pt/porous brookite TiO2 nanoflutes". United States. https://doi.org/10.1016/j.nanoen.2019.104287. https://www.osti.gov/servlets/purl/1616031.
@article{osti_1616031,
title = {Photocatalytic pure water splitting with high efficiency and value by Pt/porous brookite TiO2 nanoflutes},
author = {Cao, Shuang and Chan, Ting-Shan and Lu, Ying-Rui and Shi, Xinghua and Fu, Bing and Wu, Zhijiao and Li, Hongmei and Liu, Kang and Alzuabi, Sarah and Cheng, Ping and Liu, Min and Li, Tao and Chen, Xiaobo and Piao, Lingyu},
abstractNote = {We report the remarkable production of H2 and H2O2 from pure water using porous brookite TiO2 nanoflutes decorated with Pt nanoparticles through two-electron photocatalytic intermediate water splitting (PIWS). The H2 production rate from deionized water (pH similar to 7.0) was 9.8 +/- 0.6 $\mu$mol mg-1h-1, more than 12-fold and 230-fold higher than the reported TiO2-based photocatalytic overall water splitting (POWS) and H2/H2O2 production systems, respectively. The apparent quantum yields (AQY) value can achieve 43.4%, which is the highest value compared with the reported TiO2-based POWS systems and the commercial value for PIWS is similar to 9-fold higher than that for POWS even ignoring the separation cost. The mechanism of the distinct performance was confirmed by DFT and experimental measurements. The present work provides a feasible strategy to significantly improve the process efficiency and value of photocatalytic water splitting in both pure water and seawater using natural sunlight.},
doi = {10.1016/j.nanoen.2019.104287},
journal = {Nano Energy},
number = C,
volume = 67,
place = {United States},
year = {2019},
month = {11}
}

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