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All Journal International Journal of Evaluation and Research in Education (IJERE) Bulletin of Chemical Reaction Engineering & Catalysis
Thanh, Nguyen Thi Phuong
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education

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Investigating for Photocatalytic Activity of Hybrid TiO2/Reduced Graphene Oxide and Application in Reducing VOCs Thanh, Nguyen Thi Phuong; Danh, Nguyen Thanh; Nguyen, Tran Quang; Giang, Huynh Van; Chi, Tran Kim; Giang, Le Thuy Thanh; Trung, Tran Quang
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20042

Abstract

In this study, rGO/TiO2 hybrid nanostructures (rGO : reduced Graphene Oxide)  have been successfully fabricated for the purpose of application in the treatment of volatile organic compound (VOCs) that harmful for the environment through the method of directly measuring the change in concentration of decomposed VOCs in real time under UV-excited conditions using a home-made measuring system. the results showed that hybrids TiO2 : rGONFs (reduced Graphene Oxide nano flake) samples with the weight ratio between two kind of material are 99%:1% and 98%:2% which reduced VOCs faster than 2 time intrinsic TiO2. The phenomenon of 2D materials involved in the hybrids lead to the fact that the photocatalytic activity of TiO2 had been significantly improved, this can be explained as follows: When heterogeneous hybrid was formed, because of the difference in energy levels of conduction band between two materials was negligible, heterojunction barrier is not too high this made the photogenerated electrons from TiO2 easily move through rGONFs under UV stimulation. This thing has significantly reduced the recombination of the generated carrier in TiO2 during irradiation, which lead to an increase in the lifetime of the carrier and make photocatalytic reaction of the assembly become more effective. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhancing creative thinking skills through project-based learning and SCAMPER: a study in Vietnam Thanh, Nguyen Thi Phuong; Hoa, Le Huong
International Journal of Evaluation and Research in Education (IJERE) Vol 15, No 2: April 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v15i2.38148

Abstract

Creative thinking skills (CTS) are essential 21st-century skills for adapting to the rapidly changing world. This study aims to investigate the effectiveness of project-based learning (PBL) and substitute, combine, adapt, modify, put to another use, eliminate, reverse (SCAMPER) in enhancing high school students’ CTS, including fluency, flexibility, originality, and usefulness. This quasi-experimental study involved 120 high school students from three classes at a public high school in Vietnam. The study employed a pretest-posttest control group design with one experimental group (n=40) and all two control groups (n=80). The creative engineering design assessment (CEDA) was used. The 15-week intervention involved students in PBL-SCAMPER, while two control groups (n=40 each) followed traditional instruction. One-way analysis of variance (ANOVA) revealed significant improvements in all CTS indicators for the experimental group (p<0.05), with the largest effect on usefulness (η²=0.27). These findings suggest that the PBL-SCAMPER provides a practical pedagogical framework for developing CTS, warranting broader implementation in high school education.
Co-Authors Chi, Tran Kim Danh, Nguyen Thanh Giang, Huynh Van Giang, Le Thuy Thanh Hoa, Le Huong Nguyen, Tran Quang Trung, Tran Quang