丁耀彬1,
唐和清1
1.中南民族大学资源与环境学院,武汉430074
基金项目: 国家自然科学基金资助项目(21377169,8)
High efficient and rapid catalytic reductive decoloration of dye wastewater by nano-copper films
CAO Jin1,,DING Yaobin1,
TANG Heqing1
1.College of Resources and Environmental Science,South-Central University for Nationalities,Wuhan 430074,China
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摘要:以Cu(CH3COO)2·H2O为铜源前驱物,水合肼为还原剂,通过浸渍的方法在棉布上负载纳米铜,成功制备了纳米铜膜。利用XRD和SEM对其进行了物相和形貌的表征,以亚甲基蓝(MO)、结晶紫(CV)、甲基橙(MO)和罗丹明B(RhB)等常见的8种染料为目标污染物,评价了其催化还原染料废水的性能。结果表明:制备的纳米铜膜表面的纳米铜颗粒近似球形,平均粒径约700～800 nm,能够加快还原反应中的电子转移,达到快速使染料废水快速脱色的目的。在25 ℃,纳米铜膜的大小为4 cm×6 cm,NaBH4的浓度为0.5 mol·L-1,所建立的纳米铜膜催化体系能在12 min内使20 μmol·L-1的RhB完全脱色,在相同体系下,同浓度的MB、CV和MO的脱色时间分别只需要10 s、30 s和10 min,膜材料重复使用16次以后的脱色效果仍然在98%以上,表现出良好的催化活性和循环性。
关键词: 纳米铜膜/
脱色/
降解/
硼氢化钠/
催化还原
Abstract:The nano-copper films were prepared by impregnating the cotton in the reaction solution with Cu(CH3COO)2·H2O as the copper source precursor and hydrazine hydrate as the reducing agent. The structure and morphology of the nano-copper films were characterized by XRD and SEM. The as-prepared nano-copper was almost spherical with sizes of 700 to 800 nm. The properties of the films for catalyzing sodium borohydride (NaBH4) for the reduction of dye wastewater were evaluated by using methylene blue (MB),crystal violet (CV), methyl orange (MO) and rhodamine B (RhB) as target pollutants. The results indicated that the as-prepared nano-copper films could accelerate the electron transfer in the reduction reaction and achieve the purpose of rapid decoloration of dye wastewater. Under the test condition (NaBH4 0.5 mol·L-1, film 4 cm×6 cm, 25 ℃), 20 μmol·L-1 RhB, MB, CV and MO were efficiently decolorized within 12 min, 10 s, 30 s and 10 min,respectively. The as-prepared nano-copper film catalyst can be reused and stable for at least sixteen cycles with a high decoloration degrading efficiency of 98%.
Key words:nano-copper film/
decoloration/
degradation/
sodium borohydride/
catalytic reduction.
| [1] | SURESHKUMAR M V, NAMASIVAYAM C.Adsorption behavior of direct red 12B and rhodamine B from water onto surfactant-modified coconut coir pith[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2008,7(1):277-283 |
| [2] | MANU B, CHAUDHARI S.Anaerobic decolorisation of simulated textile wastewater containing azo dyes[J].Bioresource Technology,2002,2(3):225-231 |
| [3] | YU J X, LI B H, SUN X M, et al.Adsorption of methylene blue and rhodamine B on baker’s yeast and photocatalytic regeneration of the biosorbent[J].Biochemical Engineering Journal,2009,5(2):145-151 |
| [4] | KARADAG D, TURAN M, AKGUL E, et al.Adsorption equilibrium and kinetics of reactive black 5 and reactive red 239 in aqueous solution onto surfactant-modified zeolite[J].Journal of Chemical & Engineering Data,2007,2(5):1615-1620 |
| [5] | MOGHADDAM S S, MOGHADDAM R A M, ARAMI M.Coagulation/flocculation process for dye removal using sludge from water treatment plant:Optimization through response surface methodology[J].Journal of Hazardous Materials,2010,5(1):651-657 |
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| [7] | 常青, 江国栋, 胡梦璇, 等.石墨烯基磁性复合材料吸附水中亚甲基蓝的研究[J].环境科学,2014,5(5):1804-1809 |
| [8] | SACHDEVA S, KUMAR A.Preparation of nanoporous composite carbon membrane for separation of rhodamine B dye[J].Journal of Membrane Science,2009,9(1):2-10 |
| [9] | WANG N, ZHU L, WANG D, et al.Sono-assisted preparation of highly-efficient peroxidase-like Fe3O4 magnetic nanoparticles for catalytic removal of organic pollutants with H2O2[J].Ultrasonics Sonochemistry,2010,7(3):526-533 |
| [10] | KHAN M M, LEE J, CHO M H.Au@TiO2 nanocomposites for the catalytic degradation of methyl orange and methylene blue:An electron relay effect[J].Journal of Industrial and Engineering Chemistry,2014,0(4):1584-1590 |
| [11] | 刘双柳, 施春红, 牛红云, 等.纳米铜复合材料催化还原染料废水的研究[J].中国环境科学,2015,5(3):764-769 |
| [12] | JIANG Z J, LIU C Y, SUNL W.Catalytic properties of silver nanoparticles supported on silica spheres[J].Journal of Physical Chemistry B,2005,9(5):1730-1735 |
| [13] | SAIKIA P, T MIAH A B U, DAS P P.Highly efficient catalytic reductive degradation of various organic dyes by Au/CeO2-TiO2 nano-hybrid[J].Journal of Chemical Sciences,2017,9(1):81-93 |
| [14] | GHOSH B K, HAZRA S, NAIK B, et al.Preparation of Cu nanoparticle loaded SBA-15 and their excellent catalytic activity in reduction of variety of dyes[J].Powder Technology,2015,9:371-378 |
| [15] | GUPTA N, SINGH H P, SHARMA R K.Metal nanoparticles with high catalytic activity in degradation of methyl orange:An electron relay effect[J].Journal of Molecular Catalysis A:Chemical,2011,5(1):248-252 |
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刊出日期:2018-02-08
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纳米铜膜高效快速催化还原染料废水脱色
曹金1,,丁耀彬1,
唐和清1
1.中南民族大学资源与环境学院,武汉430074
基金项目: 国家自然科学基金资助项目(21377169,8)
关键词: 纳米铜膜/
脱色/
降解/
硼氢化钠/
催化还原
摘要:以Cu(CH3COO)2·H2O为铜源前驱物,水合肼为还原剂,通过浸渍的方法在棉布上负载纳米铜,成功制备了纳米铜膜。利用XRD和SEM对其进行了物相和形貌的表征,以亚甲基蓝(MO)、结晶紫(CV)、甲基橙(MO)和罗丹明B(RhB)等常见的8种染料为目标污染物,评价了其催化还原染料废水的性能。结果表明:制备的纳米铜膜表面的纳米铜颗粒近似球形,平均粒径约700～800 nm,能够加快还原反应中的电子转移,达到快速使染料废水快速脱色的目的。在25 ℃,纳米铜膜的大小为4 cm×6 cm,NaBH4的浓度为0.5 mol·L-1,所建立的纳米铜膜催化体系能在12 min内使20 μmol·L-1的RhB完全脱色,在相同体系下,同浓度的MB、CV和MO的脱色时间分别只需要10 s、30 s和10 min,膜材料重复使用16次以后的脱色效果仍然在98%以上,表现出良好的催化活性和循环性。
English Abstract
High efficient and rapid catalytic reductive decoloration of dye wastewater by nano-copper films
CAO Jin1,,DING Yaobin1,
TANG Heqing1
1.College of Resources and Environmental Science,South-Central University for Nationalities,Wuhan 430074,China
Keywords: nano-copper film/
decoloration/
degradation/
sodium borohydride/
catalytic reduction
Abstract:The nano-copper films were prepared by impregnating the cotton in the reaction solution with Cu(CH3COO)2·H2O as the copper source precursor and hydrazine hydrate as the reducing agent. The structure and morphology of the nano-copper films were characterized by XRD and SEM. The as-prepared nano-copper was almost spherical with sizes of 700 to 800 nm. The properties of the films for catalyzing sodium borohydride (NaBH4) for the reduction of dye wastewater were evaluated by using methylene blue (MB),crystal violet (CV), methyl orange (MO) and rhodamine B (RhB) as target pollutants. The results indicated that the as-prepared nano-copper films could accelerate the electron transfer in the reduction reaction and achieve the purpose of rapid decoloration of dye wastewater. Under the test condition (NaBH4 0.5 mol·L-1, film 4 cm×6 cm, 25 ℃), 20 μmol·L-1 RhB, MB, CV and MO were efficiently decolorized within 12 min, 10 s, 30 s and 10 min,respectively. The as-prepared nano-copper film catalyst can be reused and stable for at least sixteen cycles with a high decoloration degrading efficiency of 98%.
