Glycerol as an efficient mesopore-controlling agent for synthesis of mesoporous-assembled TiO2 nanocrystals and their remarkable photocatalytic H2 production activity |
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| Authors: | Thammanoon Sreethawong Supachai Ngamsinlapasathian Susumu Yoshikawa |
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| Affiliation: | 1. Baan Klangmuang Luzern, Soi On-nut 46, Sukhumvit 77 Road, Suanluang, Bangkok 10250, Thailand;2. Institute of Advanced Energy, Kyoto University, Uji, Kyoto 611-0011, Japan;1. Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario, IMIDA, C/ Mayor s/n, La Alberca, 30150 Murcia, Spain;2. Departamento de Química Agrícola, Geología y Edafología, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain;1. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;2. Sumitomo Electric Hardmetal Co., 1-1-1 Koyakita, Itami, Hyogo 664-0016, Japan;1. Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar 522510, A.P., India;2. Department of Physics, Usha Rama College of Engneering &Technology, Telaprolu 521109, A.P., India;3. Institute of Physics, J. Dlugosz University, Ul. Armii Krajowej 13/15, 42-201 Czestochowa, Poland;1. Department of Chemistry, Xixi Campus, Zhejiang University, Hangzhou 310028, China;2. Zhejiang Provincial Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals, Zhejiang University, Hangzhou 310028, China;3. School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China;4. Department of Chemistry, Lishui University, Lishui 323000, China;5. Thermofisher Scientific, Hangzhou 310028, China;1. College of Resources and Environment, Yuxi Normal University, Yuxi, Yunnan 653100, PR China;2. College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, PR China;3. Analysis Center, Tsinghua University, Beijing 100084, PR China;4. Technology Center, Hongta Tobacco (Group) Co., Ltd., Yuxi, Yunnan 653100, PR China;1. Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt;2. Spectroscopy Department, National Research Centre, Dokki, Cairo, Egypt |
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| Abstract: | In this work, the mesoporous-assembled TiO2 nanocrystals were successfully synthesized by a modified sol–gel process under mild conditions with the aid of glycerol, which is a main by-product from biodiesel production via the transesterification of vegetable oils. The synthesized TiO2 nanocrystals were characterized by various techniques, i.e. N2 adsorption–desorption, SEM, high resolution TEM, and XRD. The characterization results clearly showed that the glycerol could behave as an efficient mesopore-controlling agent, which induced the mesoporous-assembled characteristic of the synthesized TiO2 nanocrystals with very narrow pore size distribution. The synthesized mesoporous-assembled TiO2 nanocrystals were applied for hydrogen production from the photocatalytic water splitting. The photocatalytic activity results revealed that the synthesized mesoporous-assembled TiO2 nanocrystals possessed much higher hydrogen production activity than the commercially available P-25 TiO2 and ST-01 TiO2 powders. |
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