Efficient Disposal of Rhodamine 6G and Acid Orange 10 Dyes from Aqueous Media Using ZrO2/CdMn2O4/CdO as Novel and Facilely Synthesized Nanocomposites

被引:12
作者
Abdelrahman, Ehab A. [1 ,2 ]
Algethami, Faisal K. [1 ]
AlSalem, Huda S. [3 ]
Binkadem, Mona S. [4 ]
Khairy, Mohamed [1 ,2 ]
Saad, Fawaz A. [5 ]
El-Sayyad, Gharieb S. [6 ,7 ]
Alqahtani, Zahrah [8 ]
机构
[1] Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Chem, Riyadh 11623, Saudi Arabia
[2] Benha Univ, Fac Sci, Chem Dept, Banha 13518, Egypt
[3] Princess Nourah Bint Abdulrahman Univ, Coll Sci, Dept Chem, POB 84428, Riyadh 11671, Saudi Arabia
[4] Univ Jeddah, Coll Sci, Dept Chem, PO 80327, Jeddah 21589, Saudi Arabia
[5] Umm Al Qura Univ, Fac Sci Appl, Dept Chem, Mecca 21955, Saudi Arabia
[6] Ahram Canadian Univ ACU, Fac Pharm, Microbiol & Immunol Dept, Giza 12451, Egypt
[7] Galala Univ, Fac Pharm, Microbiol & Immunol Dept, Galala City 11566, Suez, Egypt
[8] Taif Univ, Coll Sci, Dept Chem, POB 11099, Taif 21944, Saudi Arabia
关键词
nanostructures; adsorption; rhodamine 6G dye; acid orange 10 dye; WASTE-WATER; REMOVAL; ADSORPTION; NANOPARTICLES; ZEOLITE; PECHINI; METAL; CANS;
D O I
10.3390/inorganics11080333
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
It is essential to remove rhodamine 6G and acid orange 10 dyes from contaminated water because they can induce cancer and irritate the lungs, skin, mucous, membranes, and eyes. Hence, in the current work, the Pechini sol-gel method was used for the facile synthesis of ZrO2/CdMn2O4/CdO as novel nanocomposites at 600 and 800 ?. The synthesized nanocomposites were used as novel adsorbents for the efficient removal of rhodamine 6G and acid orange 10 dyes from aqueous media. The nanocomposites, which were synthesized at 600 and 800 ?, were abbreviated as EK600 and EK800, respectively. The synthesized nanocomposites were characterized by EDS, XRD, N2 adsorption/desorption analyzer, and FE-SEM. The patterns of XRD showed that the average crystal size of the EK600 and EK800 nanocomposites is 68.25 and 85.32 nm, respectively. Additionally, the images of FE-SEM showed that the surface of the EK600 nanocomposite consists of spherical, polyhedral, and rod shapes with an average grain size of 99.36 nm. Additionally, the surface of the EK800 nanocomposite consists of polyhedral and spherical shapes with an average grain size of 143.23 nm. In addition, the BET surface area of the EK600 and EK800 nanocomposites is 46.33 and 38.49 m2/g, respectively. The optimal conditions to achieve the highest removal of rhodamine 6G and acid orange 10 dyes are pH = 8, contact time = 24 min, and temperature = 298 kelvin. The greatest removal capacity of the EK600 and EK800 adsorbents towards rhodamine 6G dye is 311.53 and 250.63 mg/g, respectively. Additionally, the greatest removal capacity of the EK600 and EK800 adsorbents towards acid orange 10 dye is 335.57 and 270.27 mg/g, respectively. The removal of rhodamine 6G and acid orange 10 dyes using the EK600 and EK800 adsorbents is spontaneous, exothermic, follows the Langmuir adsorption isotherm, and fits well with the pseudo-first-order kinetic model.
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页数:29
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