Open AccessPreparation of NiFe-LDHs Adsorbent and Its Adsorption to Methyl Orange
Author(s) -
Xiang Zhang,
Chenyong Jiang,
Ruoxuan Wang,
Shuyun Qian,
Ye Tang,
Weihua Zhuang,
Yan Xu
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/781/5/052021
Subject(s) - adsorption , methyl orange , bet theory , molar ratio , microstructure , materials science , wastewater , specific surface area , metal ions in aqueous solution , nuclear chemistry , metal , inorganic chemistry , chemical engineering , chemistry , organic chemistry , catalysis , metallurgy , environmental engineering , photocatalysis , engineering
The Ni-Fe-LDHs adsorbent with different molar ratio of Ni/Fe was synthesized with Ni(NO 3 ) 2 and Fe(NO 3 ) 3 serving as the resource of metal ions and the ammonia water serving as the precipitant. The methyl orange (MO) was chosen to simulate the dye wastewater to study the adsorption ability of different adsorbent to MO. And XRD, FT-IR and BET were employed to characterize the prepared adsorbents. The experimental results show that LDHs with well crystalline structure can be obtained when the mole ratio of Ni/Fe of 2.3~4. The Ni4Fe adsorbent with the Ni/Fe molar ratio of 4 shows the largest adsorbing capacity of 168.4 mg/g to MO. The XRD results of the spent adsorbent show that the LDHs structure was not destroyed. And the BET result of the fresh Ni4Fe adsorbent proves that it is possessed with microstructure with the surface area of 125.325 m 2 /g.