Amorphous Cr2WO6-Modified WO3 Nanowires with a Large Specific Surface Area and Rich Lewis Acid Sites: A Highly Efficient Catalyst for Oxidative Desulfurization

Wang, Huixiang; Tang, Mingxing; Shi, Fenglei; Ding, Ruimin; Wang, Liancheng; Wu, Jianbo; Li, Xuekuan; Zhong, Liangshu; Lv, Baoliang

doi:10.1021/acsami.0c10118

Cited by 55 publications

(14 citation statements)

References 51 publications

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“…As depicted in Table 1, due to the load of a-Fe 2 O 3 , the specific surface area of the La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) increased significantly from 9.97 m 2 g -1 to 63.92 m 2 g -1 , which helps to improve its adsorption capacity. It indicates that the composite could be an efficient photocatalyst, and it will exhibit high activity owing to its high specific surface area [31].…”

Section: Bet Analysismentioning

confidence: 99%

Synthesis, characterization and catalytic performance of magnetic La0.7Sr0.3MnO3/α-Fe2O3 with p–n heterojunction structure

et al. 2021

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In this study, a solar-driven photocatalyst La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) with pn heterojunction structure was synthesized and characterized. The magnetic, photocatalytic properties, Fenton-like action and the synergistic effect of the photocatalysis and Fenton-like on methyl orange (MO) degradation of La 0.7-Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) were also investigated. Results show that p-n heterojunction was formed, and it has considerable photocatalytic properties under ultraviolet light and solar irradiation. More importantly, La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) also exhibits Fenton-like catalytic performance in the presence of H 2 O 2 and oxalic acid (OA). The main reactive radicals of the La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 -H 2 O 2 -OA-sunlight system are h ? , Á OH and Á O 2 -. The chemical oxygen demand removal rate of MO wastewater in La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%)-H 2 O 2 -oxalic acid-sunlight system reached 72.4%; the value was higher than that of the sum of single photocatalysis (34.5%) and Fenton-like-dark system (27.6%), indicating that there is a synergistic effect between the photocatalysis and Fenton-like on MO degradation. In addition, La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) displays approximately superparamagnetism and has higher saturated magnetization (M s ), low coercive force and residual magnetism. So it can be easily recovered by an external magnetic field and can be reused 6 times. It was anticipated that La 0.7 Sr 0.3 MnO 3 /a-Fe 2 O 3 (20%) with p-n heterojunction structure is a stable and reusable solar-light-driven magnetic photocatalyst and has great potential applications for wastewater treatment.

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Section: Bet Analysismentioning

confidence: 99%

Synthesis, characterization and catalytic performance of magnetic La0.7Sr0.3MnO3/α-Fe2O3 with p–n heterojunction structure

et al. 2021

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“…Additionally, the SSA of NMO-30 (43.5 m 2 g –1 ) is smaller than that of NMO-10 (62.7 m 2 g –1 ), while NMO-30 exhibits superior desulfurization efficiency to NMO-10, which illustrates that oxygen vacancies may play the main role in accelerating the ODS reaction. Furthermore, several similar representative ODS systems are listed for comparison (Table S2), it is observed that YS-V O -NMO can achieve ultradeep desulfurization under relatively mild reaction conditions (O/S = 5, T = 60 °C), indicating that it has appeared in the front ranks of the existing catalysts. ,− …”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon may be caused by the fact that excessive H 2 O 2 added into the reaction system brings about more water, which limits the mass transfer and weakens the solubility of DBT in [OMIM]BF 4 due to the diluted extractant phase. 15 Considering that alkyl-substituted dibenzothiophenes including 4-MDBT and 4,6-DMDBT also exist in real oils, it is necessary to investigate the desulfurization efficiency of model oil systems containing them. As shown in Figure 5d, DBT and 4-MDBT can be almost removed from the oil after 70 min of reaction, while the sulfur removal of 4,6-DMDBT can only reach 94.6% under the same conditions.…”

Section: Catalytic Ods Performancementioning

confidence: 99%

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Boosting Catalytic Oxidative Desulfurization Performance over Yolk–Shell Nickel Molybdate Fabricated by Defect Engineering

et al. 2023

Inorg. Chem.

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Developing catalysts with optimized surface properties is significant for advanced catalysis. Herein, a rational architectural design is proposed to successfully synthesize yolk–shell nickel molybdate with abundant oxygen vacancies (YS-VO-NMO) via an acid-assisted defect engineering strategy. Notably, YS-VO-NMO with the yolk–shell structure shows complex nanoconfined interior space, which is beneficial to the mass transfer and active sites exposure. Moreover, the defect engineering strategy is of great importance to modulate the surface electronic structure and atomic composition, which contributes to the enrichment of oxygen vacancies. Benefiting from these features, the higher hydrogen peroxide activation is achieved by YS-VO-NMO to produce more hydroxyl radicals compared with untreated nickel molybdate. Consequently, the defect-engineered YS-VO-NMO not only features superior catalytic activity (99.5%) but also retains high desulfurization efficiency after recycling eight times. This manuscript provides new inspiration for designing more promising defective materials via defect engineering and architecture for different applications besides oxidative desulfurization.

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“…However, due to its severe operating conditions in terms of high reaction temperature and pressure, HDS has high operating costs and is less effective in eliminating refractory sulfur compounds; hence, it may not be the optimum desulfurization process [19,20]. Recently, sophisticated technologies such as catalytic oxidative desulfurization (Cat-ODS), selective adsorption, biodesulfurization, and oxidation-extraction have been used for the production of ultralow-sulfur fuels [21][22][23]. Cat-ODS has proven to be one of the most potent recent alternatives to HDS [24,25].…”

Section: Introductionmentioning

confidence: 99%

Batch Oxidative Desulfurization of Model Light Gasoil over a Bimetallic Nanocatalyst

et al. 2021

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A novel AgO/ZnO/HY‐zeolite bimetallic nanocatalyst was designed and synthesized by an impregnation method. The purpose of this nanocatalyst was to remove dibenzothiophene as the primary sulfur content from a model light gasoil in a catalytic oxidative desulfurization (ODS) process. The characteristics of the synthesized nanocatalyst were determined by Fourier transform IR spectroscopy, Brunauer‐Emmett‐Teller analysis, scanning electron microscopy, and X‐ray diffraction. The ODS study revealed high sulfur conversion under optimal ODS reaction conditions and very good reusability of the catalyst after recycling five times.

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Amorphous Cr₂WO₆-Modified WO₃ Nanowires with a Large Specific Surface Area and Rich Lewis Acid Sites: A Highly Efficient Catalyst for Oxidative Desulfurization

Cited by 55 publications

References 51 publications

Synthesis, characterization and catalytic performance of magnetic La0.7Sr0.3MnO3/α-Fe2O3 with p–n heterojunction structure

Synthesis, characterization and catalytic performance of magnetic La0.7Sr0.3MnO3/α-Fe2O3 with p–n heterojunction structure

Boosting Catalytic Oxidative Desulfurization Performance over Yolk–Shell Nickel Molybdate Fabricated by Defect Engineering

Batch Oxidative Desulfurization of Model Light Gasoil over a Bimetallic Nanocatalyst

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