The visible light-responsive nano-Cu2O and Cu2O/x% rGO (x=0.4%,0.7%,1%) photocatalysts were prepared by low-temperature liquid-phase precipitation method.The samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),ultraviolet-visible diffuse reflection (UV-Vis),photoluminescence spectroscopy (PL),infrared absorption spectroscopy (FT-IR),electrochemical impedance spectroscopy (EIS) and transient photocurrent tests,and their catalytic performance for the degradation of antibiotics under visible light irradiation was tested.The results showed that compared with pure Cu2O photocatalyst,the photocatalytic efficiency was significantly improved after loading rGO.Among them,Cu2O/1% rGO exhibited the best catalytic effect,with a removal rate for tetracycline hydrochloride (TC) of 71.6% after 90 min reaction,and there was no significant decrease in performance after four cycles of degradation experiments.In the process of TC degradation,hole (h+) and hydroxyl radical (·OH) groups played the main roles.Besides,Cu2O/1% rGO also exhibited a good performance in the photocatalytic removal of oxytetracycline.
Wang Limin, Liu Haitao, Feng Xinran, Hu Yue, Zhang Xinhao, Zou Lifei
. Preparation and photocatalytic performance of Cu2O/rGO composite[J]. New Chemical Materials, 2024
, 52(12)
: 183
-189
.
DOI: 10.19817/j.cnki.issn1006-3536.2024.12.026
[1] 张焕军,王席席,李轶.水体中抗生素污染现状及其对氮转化过程的影响研究进展[J].环境化学,2022,41(4):1168-1181.
[2] Zhong S F,Yang B,Xiong Q,et al.Hydrolytic transformation mechanism of tetracycline antibiotics:reaction kinetics,products identification and determination in WWTPs[J].Ecotoxicology and Environmental Safety,2021,229:113063-113072.
[3] Chen X,Zhao N,Hu X.A novel strategy of pulsed electro-assisted pyrite activation of Peroxymonosulfate for the degradation of tetracycline hydrochloride[J].Separation and Purification Technology,2022,280:119781.
[4] Ahmed S,Khan F S A,Mubarak N M,et al.Emerging pollutants and their removal using visible-light responsive photocatalysis-a comprehensive review[J].Journal of Environmental Chemical Engineering,2021,9(6):106643.
[5] 程宪伟,梁银秀,于翔霏,等.水体中抗生素污染及其处理技术研究进展[J].环境科学与技术,2017,40(S1):125-132.
[6] Kavitha S,Jayamani N,Barathi D.A study on preparation of unique TiO2/Cu2O nanocomposite with highly efficient photocatalytic reactivity under visible-light irradiation[J].Materials Technology,2021,36(11):670-683.
[7] 张海丽,刘相尧,荆国林.氧化亚铜/生物质基复合材料的研究进展[J].化工新型材料,2022,50(8):278-281,286.
[8] Ji C,Yin S N,Sun S,et al.An in situ mediator-free route to fabricate Cu2O/g-C3N4 type-Ⅱ heterojunctions for enhanced visible-light photocatalytic H2 generation[J].Applied Surface Science,2018,434(3):1224-1231.
[9] Lu W Y,Sun W,Tan X F,et al.Stabilized Cu2O Nanoparticles on rGO highly catalyzed direct oxidative coupling synthesis of α-ketoamides with molecular oxygen[J].Catalysis Communications,2019,132:105806-105811.
[10] Hummers J W,Offeman R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society,1958,80(6):1339-1339.
[11] Murugan A V,Muraliganth T,Manthiram A.Rapid,facile microwave-solvothermal synthesis of graphene nanosheets and their polyaniline nanocomposites for energy strorage[J].Chemistry of Materials,2009,21(21):5004-5006.
[12] 肖力光,寇红阳,王敬维,等.硅藻土/g-C3N4/氧化石墨烯复合材料的制备及其光催化性能研究[J].化工新型材料,2023,51(2):96-99,104.
[13] 刘宗斌,余晓皎,张健,等.Mn掺杂Cu2O微粒的制备及其光催化性能研究[J].应用化工,2020,49(7):1618-1622.
[14] 夏芬,陶钰,黄子豪,等.Cu2O-CuO/g-C3N4复合光催化剂的制备及其催化性能研究[J].化工新型材料,2020,48(6):216-221.
[15] 罗旺,万涛,简梦露,等.Cu2O/rGO光催化剂的结构及其光催化降解染料性能[J].功能材料与器件学报,2020,26(1):64-68.
[16] Nipane S V,Lee S W,Gokavi G S,et al.In situ one pot synthesis of nanoscale TiO2-anchored reduced graphene oxide (RGO) for improved photodegradation of 5-fluorouracil drug[J].Journal of Materials Science:Materials in Electronics,2018,29:16553-16564.
[17] Roy I,Bhattacharyya A,Sarkar G,et al.In situ synthesis of a reduced graphene oxide/cuprous oxide nanocomposite:a reusable catalyst[J].RSC Advances,2014,4(94):52044-52052.
[18] 秦礼平,饶邵盛,高帅,等.银-氧化亚铜/壳聚糖/石墨相氮化碳的制备及其光催化抗菌性能[J].化工新型材料,2021,49(7):102-106.
