Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

Abstract

Silkworm excrement is a very useful biomass waste, composed of layer-structured fats and proteins, which are great precursors for carbon composite materials. In this work, new porous composites derived from silkworm excrement were prepared for selective separation of flavor 4-methylanisole from the binary 4-methylanisole/4-anisaldehyde mixture. In particular, the silkworm excrement, possessing a unique nanosheet structure, is converted into a graphite-like carbon by a simple calcination strategy followed by a metal-ion-doping procedure. This Fe@C composite exhibits a special nano-spongy morphology, anchoring Fe3C/Fe5C2 on the carbon nanosheets. Density functional theory simulations showed that 4-methylanisole presents a stronger π–π interaction and attraction forces with sp2 carbon nanosheets in Fe@C composites than 4-anisaldehyde. The selective adsorption experiments further confirmed that the Fe@C composites exhibited a 4-methylanisole capacity of 7.3 mmol/g at 298 K and the highest selectivity of 17 for an equimolar 4-methylanisole/4-anisaldehyde mixture among the examined adsorbents including MOFs and commercial activated carbon materials, which demonstrates the potential of this low-cost and eco-friendly porous carbon material as a promising sustainable adsorbent.

Cotton-Derived Fe/Fe3C-Encapsulated Carbon Nanotubes for High-Performance Lithium–Sulfur Batteries

“…The peak at 285.5 eV corresponded to the presence of CS bonds, which confirmed the presence of sulfur and the reaction between sulfur and the Fe/Fe 3 C-MWCNT@ACT composite. The peak at 284.3 eV could be ascribed to the presence of Fe 3 C, agreeing well with XRD results. Two dominant peaks at 163.7 and 164.9 eV in the S 2p spectrum (see Figure S4b) were identified as S 2p 3/2 and S 2p 1/2 .…”

Host behaviour of two tricyclic fused systems in mixed anisole guest solvents

“…2 Additionally, ANI and 4MA can be found in trace amounts in certain natural products and crop oils. 3 Alkylation using methanol is one of the more common methods used to transform phenol to ANI, and the different o-, m-and p-cresols to the MAs. 2,4 In the case of the synthesis of the MAs, phenol may be subjected to O-alkylation to form ANI following which ANI then reacts through C-alkylation to form the MA compound.…”

Adsorption behavior of Congo red on a carbon material based on humic acid

“…Table 1 After processing, the carbon composite material has a high specific surface area, a highly developed pore structure and surface activity [28], [29], [30] . These properties make it have extremely high adsorption performance.…”