Preparation of Co–Mo–O ultrathin nanosheets with outstanding catalytic performance in aerobic oxidative desulfurization

Abstract

Ultrathin Co–Mo–O nanosheets were prepared as robust catalysts for aerobic oxidative desulfurization with O2 in air as the oxidant.

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

“…To clarify this, Co-Mo-O nanorods and nanosheets were fabricated by the co-precipitation method prior to calcination (Fig. 6d) in the works of Zhang et al and Dong et al 75,77 As seen in Fig. 6e and f, the thickness of the Co-Mo-O nanosheet was around 2-3 nm, which was thinner than the Co-Mo-O nanorod with a 80-120 nm width.…”

“…In view of the catalyst morphology's impact on ODS activity, a few recent studies have signified that nanorod and nanosheet mixed metallic oxide catalysts are potentially the key to ODS advancement. [75][76][77] However, the decision on whether nanosheet catalysts perform better than nanorod catalysts in ODS is still under debate. To clarify this, Co-Mo-O nanorods and nanosheets were fabricated by the co-precipitation method prior to calcination (Fig.…”

Engineering the Electronic Structure of Mo Sites in Mn–Mo–O Mixed-Metal Oxides for Efficient Aerobic Oxidative Desulfurization

“…21 Thus, the development of high-performance catalysts to reduce the requirement for O 2 activation refers to the core issue in this field. 22 Over the recent years, extensive efforts have led to various catalysts for the aerobic oxidative desulfurization (AODS), including polyoxometalates, 23−25 W-, Mo-, Ti-, and V-based metal oxides, 21,26 supported Cu 27 and Pt 28 catalysts, and metalfree materials (e.g., rGO 29 or BN 30 ). Among them, metal oxides possess a promising application prospect for their good activity and excellent stability.…”

“…According to recent studies, hydrogen peroxide, oxygen (O 2 ), and ozone have been employed as oxidants for ODS. − To be specific, O 2 shows a better application prospect for its low cost, abundant sources, and no byproducts after the reaction. , However, the ground state O 2 is chemically inert and should usually be activated under harsh conditions . Thus, the development of high-performance catalysts to reduce the requirement for O 2 activation refers to the core issue in this field …”

Atomic-Layered α-V2O5 Nanosheets Obtained via Fast Gas-Driven Exfoliation for Superior Aerobic Oxidative Desulfurization

“…Thus, numerous non-HDS methods have been developed to meet the latest restrict rules . Among which, the oxidative desulfurization (ODS) method receives the most attention because of its relatively mild reaction conditions and higher sulfur removal for aromatic sulfides. − Among the candidates for ODS reactions, transition metal oxides (TMOs) are the candidates most often selected because of their relatively higher catalytic activity, easier synthesis procedure, and lower cost. − In addition, catalysts with nanostructures (nanowire, nanobelt, or nanosheets) would exhibit a higher catalytic ability because more active sites would be exposed on their surface. − Thus, nanostructured TMO materials might be the potential candidates for the ODS process.…”