Oxygen-Enriched Biomass-Activated Carbon Supported Platinum Nanoparticles as an Efficient and Durable Catalyst for Oxidation in Benzene

Abstract

Carbon materials have been widely utilized as supports in different catalytic reactions; however, it has been rarely reported that carbon supports were used in the catalytic oxidation of volatile organic compounds because they have no catalytic activity and poor catalytic stability compared to metal supports. Herein, fabricating optimal carbon supports to facilitate the catalytic oxidation of benzene has become a great concern of research. A novel activated carbon (biomass−HCO) was prepared from different waste biomass via a three-stage route without the participation of harmful chemical reagents. The successful synthesis of C−O bonds and CO bonds through this method could greatly increase oxygen-enriched functional groups and defects of the biomass−HCO surface, which could effectively promote the nucleation and growth of platinum. Benzene oxidation reactions were performed to evaluate the activity of catalysts. The results demonstrated that Pt/biomass−HCO catalyst made the reaction temperature sharply decrease to 160 °C at T 90 . The 150 h on-stream reaction exhibited great thermal stability of Pt/biomass−HCO. The DFT calculations verified the strong interaction between Pt nanoparticles and carbon supports. Moreover, our demonstration of the superior benzene oxidation activity of Pt/ biomass−HCO catalysts revealed that it is feasible to utilize oxygen-enriched biomass carbon as catalytic supports toward the oxidation of volatile organic compounds.

Tridoped Mesoporous Carbon as a Metal-Free Catalyst for Ammoxidation of (Hetero)Aromatic Alcohols to Nitriles

“…The XRD patterns indicate that the graphitic structure of the carbon-based catalysts is found by the existence of the broad diffraction peak approximately at 23°, which is the characteristic of the crystalline graphite (002) plane of graphitic carbon. , The other sharp peaks at about 26, 30, 32, and 44° are considered to be the crystallization of inorganic impurities, for example, silica after calcination of straw . Two peaks at 1348 and 1587 cm –1 are observed in the Raman spectra (Figure b), which are, respectively, attributed to the D-band and G-band for the typical characteristic Raman peaks of carbon. , The ratio of D-peak intensity to G-peak intensity ( I D / I G ) can be used to characterize the degree of defects in carbon. , After the introduction of N in CN-900, the defect degree increases by the fact that the I D / I G ratio increases from 1.88 in CN-900 to 2.06 in N/CN-900.…”

“…The XRD patterns indicate that the graphitic structure of the carbon-based catalysts is found by the existence of the broad diffraction peak approximately at 23°, which is the characteristic of the crystalline graphite (002) plane of graphitic carbon. 31,32 The other sharp peaks at about 26, 30, 32, and 44°a re considered to be the crystallization of inorganic impurities, for example, silica after calcination of straw. 33 Two peaks at 1348 and 1587 cm −1 are observed in the Raman spectra (Figure 3b), which are, respectively, attributed to the D-band and G-band for the typical characteristic Raman peaks of carbon.…”

Single-atom catalysts for catalytic benzene oxidation to phenol: recent progress and future perspectives

“…Besides Cu SACs and Fe SACs, some other non-precious metal SACs are also well-developed for improving the benzene oxidation performance. [107][108][109] For example, Cao et al 110 reported a universal synthesis pathway for the fabrication of a series of SACs by using ionic liquids (ILs). To be specific, ILs and metal ions were first coordinated and then co-adsorbed on the surface of g-C 3 N 4 nanosheets in water.…”

Nanofiltration membranes composed of carbonized giant cane and Pongamia meal binder for ion sieving in water and molecular sieving in organic solvents

“…Activated carbon (AC) materials are characterized by their high surface area, significant chemical stability, tunability of the surface and structure, and ease of production. They can be derived from biomass sources such as coconut shells [23], banana peel [24], straw [25], fungal mycelium [26],…”