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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

Van Cuong VNU-HCM, VNU-HCM, Key Laboratory of Chemical Engineering and Petroleum Processing (Key CEPP Lab), Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam|
Nguyen (57218384868) | Mai (57204856046); Huu Hieu | Pham (57925108000); Thanh Phong | Ly (57925168600); Trong Liem Chau | Nguyen (57263734200); Tan Nhiem | Le (57925225400); Thai Hoang Ho Chi Minh City University of Technology and Education (HCMUTE), 01 Vo Van Ngan, Linh Chieu Ward, Thu Duc City, Ho Chi Minh City, Viet Nam| Le (57360518800); Khac Hung University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam| Dang (57924938700); Tran Trung Nghia Vietnam National University Ho Chi Minh City (VNU), Linh Trung Ward, Thu Duc city, Viet Nam| Le (57193897942); Lam Tuan Cuong Faculty of Chemical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam|

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

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