Formalin or hydrate of formaldehyde, a common disinfectant used in aquaculture, is not able to absorb sunlight, therefore its photodegradation must be catalyzed. To take advantage of sunlight for its photodegradation, TiO2-reduced graphene oxide (TiO2-rGO) nanocomposites with different GO contents (0.25-3.0 wt%) were synthesized and characterized by scanning electron microscopy (SEM), UV-vis and ATR-FTIR spectroscopies. Additionally, their specific surface areas (S-BET), pore volume and size were determined. The photocatalysts efficiency for formaldehyde (FM) degradation under simulated sunlight was assessed in aqueous solution. Among the nanocomposites considered, TiO2-rGO 0.5 wt% was the most efficient, achieving 93.8 +/- 4.6% of FM photodegradation in 90 min. The same irradiation conditions were applied in natural water matrices (aquaculture's freshwater and saltwater) to evaluate the influence of natural water constituents on photocatalysis. The photodegradation percentages obtained were 63.7 +/- 0.6% and 16.0 +/- 1.4% in aquaculture's freshwater and saltwater, respectively. This lower efficiency to photodegrade FM in natural aqueous matrices is attributed to the inhibition of photocatalytic oxidation of organic compounds caused by dissolved organic matter (DOM) and inorganic ions existing in the aquatic environment. Nevertheless, the results obtained for photocatalytic efficiency in natural waters are promising, suggesting a great potential of application in green photocatalysis to remove FM from contaminated freshwater.
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Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Lee, Joon Seok
;
You, Kyeong Hwan
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Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
You, Kyeong Hwan
;
Park, Chan Beum
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Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
机构:
Sejong Univ, Dept Civil & Environm Engn, Seoul 143747, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Maeng, Sung Kyu
;
Cho, Kangwoo
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Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Cho, Kangwoo
;
Jeong, Boyoung
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Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Jeong, Boyoung
;
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Lee, Jaesang
;
Lee, Yunho
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Gwangju Inst Sci & Technol, Dept Environm Sci & Engn, Gwanju 500712, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Lee, Yunho
;
Lee, Changha
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Ulsan Natl Inst Sci & Technol, Sch Urban & Environm Engn, Ulsan 698805, South Korea
Ulsan Natl Inst Sci & Technol, KIST UNIST Ulsan Ctr Convergent Mat KUUC, Ulsan 698805, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Lee, Changha
;
Choi, Kyoung Jin
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Ulsan Natl Inst Sci & Technol, KIST UNIST Ulsan Ctr Convergent Mat KUUC, Ulsan 698805, South Korea
Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 698805, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Choi, Kyoung Jin
;
Hong, Seok Won
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Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
机构:
Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
Lee, Joon Seok
;
You, Kyeong Hwan
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Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
You, Kyeong Hwan
;
Park, Chan Beum
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Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South KoreaKorea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea
机构:
Sejong Univ, Dept Civil & Environm Engn, Seoul 143747, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Maeng, Sung Kyu
;
Cho, Kangwoo
论文数: 0引用数: 0
h-index: 0
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Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Cho, Kangwoo
;
Jeong, Boyoung
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Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Jeong, Boyoung
;
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Lee, Jaesang
;
Lee, Yunho
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h-index: 0
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Gwangju Inst Sci & Technol, Dept Environm Sci & Engn, Gwanju 500712, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Lee, Yunho
;
Lee, Changha
论文数: 0引用数: 0
h-index: 0
机构:
Ulsan Natl Inst Sci & Technol, Sch Urban & Environm Engn, Ulsan 698805, South Korea
Ulsan Natl Inst Sci & Technol, KIST UNIST Ulsan Ctr Convergent Mat KUUC, Ulsan 698805, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Lee, Changha
;
Choi, Kyoung Jin
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h-index: 0
机构:
Ulsan Natl Inst Sci & Technol, KIST UNIST Ulsan Ctr Convergent Mat KUUC, Ulsan 698805, South Korea
Ulsan Natl Inst Sci & Technol, Sch Mat Sci & Engn, Ulsan 698805, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea
Choi, Kyoung Jin
;
Hong, Seok Won
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h-index: 0
机构:
Korea Inst Sci & Technol, Ctr Water Resource Cycle Res, Seoul 135791, South KoreaSejong Univ, Dept Civil & Environm Engn, Seoul 143747, South Korea