Details

Autor(en) / Beteiligte

• Kong, Di
• Liu, Yunfang
• Li, Yangyang
• Chi, Weidong
• Huang, Qigu
• Yu, Changyuan

Titel

Facile preparation and dye removal properties of Fe^sub 3^O^sub 4^@carbon nanocomposite

Ist Teil von

• Micro & nano letters, 2018-02, Vol.13 (2), p.219

Ort / Verlag

Stevenage: John Wiley & Sons, Inc

Erscheinungsjahr

2018

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Fe^sub 3^O^sub 4^@carbon nanocomposite (Fe^sub 3^O^sub 4^@C) was continuously prepared by combining microreactor with pyrolysis reactor. The Fe^sub 3^O^sub 4^ nanoparticles homogeneously disperse in the carbon matrix with an average size of about 9.2 nm and narrow size distribution. The Fe^sub 3^O^sub 4^@C nanocomposite has a Brunauer–Emmett–Teller specific surface area of 71.9 m2/g and total pore volume of 0.37 cm3/g. This nanocomposite has a saturation magnetisation value of 16 emu/g and could be easily separated from water by an external magnet. With the increase of pH value or temperature, the Rhodamine B absorbing capacity of the Fe^sub 3^O^sub 4^@C nanocomposite first increases and then decreases after a certain value. The absorbing capacity at pH value 9 is about 169 mg/g when the temperature is 20°C. The above said value also exceeds 150 mg/g at pH value 3. The capacity is still higher than 120 mg/g after four regenerations. The absorbing capacity even reaches to 184 mg/g at 60°C of the absorbing temperature.