Preparation of novel cross-linked graphene oxide membrane for desalination applications using (EDC and NHS)-activated graphene oxide and PEI

Graphene Oxide Derivatives and Their Nanohybrid Structures for Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Analysis of Small Molecules

“…Although the previous reports only utilize Fe 3 O 4 NPs/GO nanohybrid structures as a MSPE material [ 95 ], Fe 3 O 4 NPs/GO nanohybrid structures can be directly applied to LDI-TOF-MS analysis after MSPE of specific target analytes because both GO and Fe 3 O 4 NPs are an efficient material for LDI-TOF-MS analysis of small molecules [ 61 , 96 ]. Chien et al [ 97 ] demonstrated that the Fe 3 O 4 NPs/GO nanohybrid structures can be simultaneously used for MSPE and then LDI-TOF-MS analysis of glimepride, which is one of the representative medicines to reduce blood glucose levels in the patients of diabetes but also abused to induce narcotic effect.…”

“…The Fe 3 O 4 NPs/GO nanohybrid structures were prepared by incorporation of pre-synthesized Fe 3 O 4 NPs on the surface of GO flakes, having the different number of layers through an emulsion and solvent evaporation process. By using the Fe 3 O 4 NPs/GO nanohybrid structures, the LOD of glimepiride was determined to be as 284 pmol, 253 pmol, and 26 pmol for Fe 3 O 4 NPs/GO nanohybrid structures prepared with single layered, 2–4 layered, and 4–8 layered GO flakes, respectively [ 95 ]. Those results clearly imply that the Fe 3 O 4 NPs/GO nanohybrid structures are one of the promising materials for MSPE and LDI-TOF-MS analysis and the number of GO layers has critical influence on the efficiency of LDI-TOF-MS analysis on the Fe 3 O 4 NPs/GO nanohybrid structures.…”

The stability of a graphene oxide (GO) nanofiltration (NF) membrane in an aqueous environment: progress and challenges

“…3B). [49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] Furthermore, glutaraldehyde 67 and 1-allyl-3-vinylimidazolium chloride 68 have also been utilized as cross-linking agents to improve the stability of the GO membrane in water. Although covalent cross-linking can endow the GO membranes with enough stability in water, the excessive cross-linking will disturb and block water transport within the GO nanochannels, leading to the decrease of the water flux of the membrane.…”

High‐flux PVDF/PVP nanocomposite ultrafiltration membrane incorporated with graphene oxide nanoribbones with improved antifouling properties

“…36,38,[46][47][48][49][50][51][52][53][54][55] Carbon nanomaterials, such as GO and CNTs with outstanding properties, have attracted considerable attention. 8,44,[56][57][58] Carbon nanomaterials can be used as nanofillers to produce nanocomposite membranes. As reported in the literature, [59][60][61][62][63] by adding small amounts of carbon nanomaterials to the polymer matrix, less than 2 wt%, the performance of the prepared nanocomposite membranes could be effectively enhanced.…”

“…Among the various advanced methods used to improve the PVDF properties, introduction of various nanofillers such as carbon nanomaterials has received much attention 36,38,46–55 . Carbon nanomaterials, such as GO and CNTs with outstanding properties, have attracted considerable attention 8,44,56–58 . Carbon nanomaterials can be used as nanofillers to produce nanocomposite membranes.…”