TY - JOUR
T1 - An instant, biocompatible and biodegradable high-performance graphitic carbon nitride
AU - Kang, Shifei
AU - Fang, Zirou
AU - He, Maofen
AU - Chen, Mengya
AU - Gao, Yuqiong
AU - Sun, Di
AU - Liu, Yanfei
AU - Chen, Menglin
AU - Dong, Mingdong
AU - Liu, Ping
AU - Cui, Lifeng
N1 - Copyright © 2019 Elsevier Inc. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Polymer graphitic carbon nitride (g-C3N4) materials have attracted growing interest owing to their impressive applicability in photocatalysis and optoelectronic devices. However, further applications of g-C3N4 materials are greatly restricted by their chemical inertness and insolubility in most solvents. Regarding the rising prospect of g-C3N4 nanosheets in the biomedicalfield, high solubility and biocompatibility are required for the further development of g-C3N4 materials. In this study, a simple one-step thermal polymerization method was designed to prepare fast-soluble mesoporous g-C3N4 nanosheets by using NH4HSO4 as the critical adjuvant. The products, especially the optimal g-C3N4 NSs-4, showed impressive solubility, biocompatibility and partial biodegradability. The enriched surface hydrophilic groups (-NH2 and -OH) may contribute to improving the solubility of g-C3N4 nanosheets, while the partial biodegradability can be ascribed to the presence of the disulfide bond in the g-C3N4 framework. In this system, the NH4HSO4 adjuvant acted not only as O and S sources, but also as a bubbling agent that endows the g-C3N4 a porous structure with greatly enlarged specific surface area and high separation efficiency of photogenerated electron-hole pairs. These integrative positive factors also greatly contributed to the photocatalytic activity of the g-C3N4 nanosheets. This facile, economic and general fabrication strategy for mesoporous, fast-soluble and biocompatible g-C3N4 with superior visible-light photocatalytic activity is promising in environmental, energy and biomedical fields.
AB - Polymer graphitic carbon nitride (g-C3N4) materials have attracted growing interest owing to their impressive applicability in photocatalysis and optoelectronic devices. However, further applications of g-C3N4 materials are greatly restricted by their chemical inertness and insolubility in most solvents. Regarding the rising prospect of g-C3N4 nanosheets in the biomedicalfield, high solubility and biocompatibility are required for the further development of g-C3N4 materials. In this study, a simple one-step thermal polymerization method was designed to prepare fast-soluble mesoporous g-C3N4 nanosheets by using NH4HSO4 as the critical adjuvant. The products, especially the optimal g-C3N4 NSs-4, showed impressive solubility, biocompatibility and partial biodegradability. The enriched surface hydrophilic groups (-NH2 and -OH) may contribute to improving the solubility of g-C3N4 nanosheets, while the partial biodegradability can be ascribed to the presence of the disulfide bond in the g-C3N4 framework. In this system, the NH4HSO4 adjuvant acted not only as O and S sources, but also as a bubbling agent that endows the g-C3N4 a porous structure with greatly enlarged specific surface area and high separation efficiency of photogenerated electron-hole pairs. These integrative positive factors also greatly contributed to the photocatalytic activity of the g-C3N4 nanosheets. This facile, economic and general fabrication strategy for mesoporous, fast-soluble and biocompatible g-C3N4 with superior visible-light photocatalytic activity is promising in environmental, energy and biomedical fields.
KW - Biocompatible
KW - Biodegradable
KW - Fast-soluble
KW - Graphitic carbon nitride
KW - NH HSO
UR - http://www.scopus.com/inward/record.url?scp=85076848331&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2019.12.021
DO - 10.1016/j.jcis.2019.12.021
M3 - Journal article
C2 - 31887697
SN - 0021-9797
VL - 563
SP - 336
EP - 346
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -