Iron oxide（Fe2O3） was doped onto fullerene[60]（C（60）） to form a C（60）‐Fe2O3 composite using an easy and scalable impregnation method. The as‐prepared C（60）‐Fe2O3 samples were characterized by powder X‐ra...Iron oxide（Fe2O3） was doped onto fullerene[60]（C（60）） to form a C（60）‐Fe2O3 composite using an easy and scalable impregnation method. The as‐prepared C（60）‐Fe2O3 samples were characterized by powder X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, high‐resolution transmission electron microscopy, UV‐vis absorption spectroscopy, Raman spec‐troscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of the C（60）‐Fe2O3 catalyst was evaluated by examining the degradation of methylene blue（MB）, rhodamine B（RhB）, methyl orange（MO）, and phenol under visible light（λ 420 nm） in the presence of hydrogen per‐oxide. The results showed that the catalyst exhibited excellent catalytic properties over a wide pH range 3.06–10.34. Under optimal conditions, 98.9% discoloration and 71% mineralization of MB were achieved in 80 min. Leaching test results indicated that the leaching of iron from the catalyst was negligible and that the catalyst had a high photocatalytic activity after five reaction cycles. The catalyst was also efficient in the degradation of RhB, MO, and phenol. These findings could be at‐tributed to the synergetic effects of C（60） and Fe2O3. We used active species trapping experiments to determine the main active oxidant in the photocatalytic reaction process and found that hydroxyl radicals played a major role in the entire process.展开更多
The biological behavior of fullerene derivatives shows their considerable potential application in medicine field. To understand the biodistribution of C60 derivatives as drugs or drug carriers, a simple water-soluble...The biological behavior of fullerene derivatives shows their considerable potential application in medicine field. To understand the biodistribution of C60 derivatives as drugs or drug carriers, a simple water-soluble derivative C60(OH)x(O)y was labeled with 99mTc. A r-counter and a single photo emission computed tomography (SPECT) were used to assess the biodistribution and metabolism of the labeled compound in mice and rabbits, respectively. The results showed that the compound could be absorbed rapidly by tissues, especially by coronal bone, breastbone, backbone, extremity honeycomb, liver and spleen. The clearance was slow from all tissues except for brain. The compound might be excreted through urine and enteron. The biodistribution shows some difference from that of Yamago et al. In this note, we discuss the possible reason leading to the difference. Further study is needed to find out to what extent the C60 itself determines the biodistribution of derivatives.展开更多
基金supported by the National Natural Science Foundation of China (21347006, 21576175, 51478285, 51403148)the Opening Project of Key Laboratory of Jiangsu Province environmental science and engineering of Suzhou University of Science and Technology (zd131205)Collabora‐tive Innovation Center of Technology and Material of Water Treatment and Suzhou Key Lab of Separation and Purification Materials & Technologies (SZS201512)~~
文摘Iron oxide（Fe2O3） was doped onto fullerene[60]（C（60）） to form a C（60）‐Fe2O3 composite using an easy and scalable impregnation method. The as‐prepared C（60）‐Fe2O3 samples were characterized by powder X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, high‐resolution transmission electron microscopy, UV‐vis absorption spectroscopy, Raman spec‐troscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of the C（60）‐Fe2O3 catalyst was evaluated by examining the degradation of methylene blue（MB）, rhodamine B（RhB）, methyl orange（MO）, and phenol under visible light（λ 420 nm） in the presence of hydrogen per‐oxide. The results showed that the catalyst exhibited excellent catalytic properties over a wide pH range 3.06–10.34. Under optimal conditions, 98.9% discoloration and 71% mineralization of MB were achieved in 80 min. Leaching test results indicated that the leaching of iron from the catalyst was negligible and that the catalyst had a high photocatalytic activity after five reaction cycles. The catalyst was also efficient in the degradation of RhB, MO, and phenol. These findings could be at‐tributed to the synergetic effects of C（60） and Fe2O3. We used active species trapping experiments to determine the main active oxidant in the photocatalytic reaction process and found that hydroxyl radicals played a major role in the entire process.
基金This work was supported by the National Natural Science Foundation of China (Grant No. 19975066).
文摘The biological behavior of fullerene derivatives shows their considerable potential application in medicine field. To understand the biodistribution of C60 derivatives as drugs or drug carriers, a simple water-soluble derivative C60(OH)x(O)y was labeled with 99mTc. A r-counter and a single photo emission computed tomography (SPECT) were used to assess the biodistribution and metabolism of the labeled compound in mice and rabbits, respectively. The results showed that the compound could be absorbed rapidly by tissues, especially by coronal bone, breastbone, backbone, extremity honeycomb, liver and spleen. The clearance was slow from all tissues except for brain. The compound might be excreted through urine and enteron. The biodistribution shows some difference from that of Yamago et al. In this note, we discuss the possible reason leading to the difference. Further study is needed to find out to what extent the C60 itself determines the biodistribution of derivatives.
