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Effect of reducing agents on co-precipitation synthesis of titanium dioxide/reduced graphene oxide composite materials for upgrading the performance of dye-sensitized solar cells
Chemical Engineering Science Số , năm 2022 (Tập 264, trang -)
ISSN: 92509
ISSN: 92509
DOI: 10.1016/j.ces.2022.118145
Tài liệu thuộc danh mục:
Article
English
Từ khóa: Ascorbic acid; Composite materials; Coprecipitation; Dye-sensitized solar cells; Energy gap; Graphene oxide; Reducing agents; Sodium Borohydride; Composites material; Coprecipitation method; Coprecipitation synthesis; Dye- sensitized solar cells; Oxide composites; Performance; Photo-anodes; Photoanode materials; Reduced graphene oxides; Synthesised; Titanium dioxide
Tóm tắt tiếng anh
Herein, titanium dioxide/reduced graphene oxide (TiO2/rGO) composite material was synthesized using the co-precipitation method to investigate reducing agents. The as-prepared TiO2/rGO composite material was employed to fabricate photoanode in dye-sensitized solar cells (DSSCs). Experimental results showed that the reducing agents were essential in reducing GO into rGO. Still, they also had a significant influence on the bonding of rGO with TiO2, leading to the narrowing of band-gap energy photoanode material and enhancement of DSSCs performance. The high performance was recognized for DSSCs using ascorbic acid (6.94 %), hydrazine (7.08 %), and sodium borohydride (7.17 %), while low counterpart was affirmed to sodium citrate (5.54 %), and D-glucose (4.63 %) in comparison with pure TiO2 (6.82 %). Therefore, the findings from this research are highly expected to pave the way for optimizing co-precipitation synthesis of TiO2/rGO composite based on the favorable reducing agents, ultimately applying for the fabrication of DSSCs commercially. 2022 Elsevier Ltd