TY - JOUR
T1 - Magnetically Separable Fe3O4/SiO2/TiO2 Photocatalyst Composites Prepared through Hetero Agglomeration for the Photocatalytic Degradation of Paraquat
AU - Gunlazuardi, Jarnuzi
AU - Fisli, Adel
AU - Ridwan,
AU - Krisnandi, Yuni Krisyuningsih
AU - Robert, Didier
N1 - Funding Information:
The authors gratefully acknowledge the support from DGHE, Directorate General of Higher Education, the
Funding Information:
The authors gratefully acknowledge the support from DGHE, Directorate General of Higher Education, the Republic of Indonesia under program bilateral collaboration ?Hibah Kolaborasi Luar Negeri (HKLN);? and Universitas Indonesia Research Cluster Program for Titania Photo Electrocatalysis (TiPEC), and Doctoral Research Support Grant No: 1864/UN2.R12/ HKP.05.00/2015; and NKB-319/UN2.RST/HKP.05.00/ 2021. The Scholarship support from The State Ministry of Research and Technology (SMRT), Republic of Indonesia, for A.F. is also acknowledged.
Funding Information:
Republic of Indonesia under program bilateral collaboration “Hibah Kolaborasi Luar Negeri (HKLN);” and Universitas Indonesia Research Cluster Program for Titania Photo Electrocatalysis (TiPEC), and Doctoral Research Support Grant No: 1864/UN2.R12/ HKP.05.00/2015; and NKB-319/UN2.RST/HKP.05.00/ 2021. The Scholarship support from The State Ministry of Research and Technology (SMRT), Republic of Indonesia, for A.F. is also acknowledged.
Publisher Copyright:
© 2021, Universitas Indonesia. All rights reserved.
PY - 2021/12
Y1 - 2021/12
N2 - A photocatalyst supported on magnetic material allows the simple technique by using an external magnetic material to separate photocatalyst from the treated water. Thus, it is a magnetically separable nanoparticles photocatalyst (MSNP). The use of superparamagnetic nanoparticles that do not pose spontaneous magnetic moment thus could be dispersed in water and can be recollected easily by an external magnetic bar. We prepare Fe3O4/SiO2/TiO2 composite by hetero agglomeration of Fe3O4/SiO2 and TiO2 at a pH range of 3 to 6.2 in an aqueous slurry. The Fe3O4/SiO2 was prepared via co-precipitation of iron (II) and iron (III) ioni c solution containing ammonium hydroxide and sodium silicate. The prepared composites were characterized by XRD, TEM, FTIR, and VSM, while the photocatalytic activities were tested toward paraquat in water. Based on zeta potential values, the Fe3O4/SiO2 and TiO2 were being hetero agglomerated at pH 5 to obtain Fe3O4/SiO2/TiO2 composite. The XRD characterization confirmed the presence of anatase, rutile, and mag-netite crystal phases. TEM images showed that the Fe3O4 was covered by SiO2 and randomly attached to TiO2. The observed FTIR peak at 940-960 cm-1 attributed to-Si-O-Ti-bonding mode, ensuring photocatalyst (TiO2) adherence to the Fe3O4/SiO2 cluster. The prepared Fe3O4/SiO2/TiO2 composite showed good photocatalytic activity for the paraquat removal and showed a good magnetic property (VSM measurement).
AB - A photocatalyst supported on magnetic material allows the simple technique by using an external magnetic material to separate photocatalyst from the treated water. Thus, it is a magnetically separable nanoparticles photocatalyst (MSNP). The use of superparamagnetic nanoparticles that do not pose spontaneous magnetic moment thus could be dispersed in water and can be recollected easily by an external magnetic bar. We prepare Fe3O4/SiO2/TiO2 composite by hetero agglomeration of Fe3O4/SiO2 and TiO2 at a pH range of 3 to 6.2 in an aqueous slurry. The Fe3O4/SiO2 was prepared via co-precipitation of iron (II) and iron (III) ioni c solution containing ammonium hydroxide and sodium silicate. The prepared composites were characterized by XRD, TEM, FTIR, and VSM, while the photocatalytic activities were tested toward paraquat in water. Based on zeta potential values, the Fe3O4/SiO2 and TiO2 were being hetero agglomerated at pH 5 to obtain Fe3O4/SiO2/TiO2 composite. The XRD characterization confirmed the presence of anatase, rutile, and mag-netite crystal phases. TEM images showed that the Fe3O4 was covered by SiO2 and randomly attached to TiO2. The observed FTIR peak at 940-960 cm-1 attributed to-Si-O-Ti-bonding mode, ensuring photocatalyst (TiO2) adherence to the Fe3O4/SiO2 cluster. The prepared Fe3O4/SiO2/TiO2 composite showed good photocatalytic activity for the paraquat removal and showed a good magnetic property (VSM measurement).
KW - Composite
KW - FeO/SiOTiO
KW - Magnetically separable photocatalyst
KW - Paraquat
KW - Photocatalyst
UR - http://www.scopus.com/inward/record.url?scp=85124302258&partnerID=8YFLogxK
U2 - 10.7454/mss.v25i4.1277
DO - 10.7454/mss.v25i4.1277
M3 - Article
AN - SCOPUS:85124302258
SN - 2339-1995
VL - 25
SP - 236
EP - 246
JO - Makara Journal of Science
JF - Makara Journal of Science
IS - 4
M1 - 6
ER -