Novel α-Fe2O3/MXene nanocomposite as heterogeneous activator of peroxymonosulfate for the degradation of salicylic acid

Ding, Mingmei; Chen, Wei; Xu, Hang; Shen, Zhiyuan; Lin, Tao; Hu, Kai; Lu, Chunhui; Xie, Zhiyuan

doi:10.1016/j.jhazmat.2019.121064

Cited by 210 publications

(53 citation statements)

References 58 publications

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“…[18][19][20][21][22][23] In the past few years, MXenes have been explored and studied for use in many other applications, such as in electronics, [24][25][26][27] biomedicine, 28,29 sensors, [30][31][32][33][34][35][36][37] biosensors, [38][39][40][41][42][43][44] photothermal conversion, [45][46][47] water purification, [48][49][50][51] and even in the field of catalysis. [52][53][54][55][56][57][58][59] Having a 2D structure similar to that of graphene but better conductivity, MXenes is widely studied for use as an electrocatalyst in clean energy conversion reactions, such as the ORR, 60 methanol oxidation reaction (MOR), 61,62 nitrogen reduction reaction (NRR) 63,64 and electrochemical water splittin...…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

et al. 2021

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The oxygen reduction reaction (ORR) that occurs in the cathode of fuel cells is a major issue in proton exchange membrane fuel cells (PEMFCs) due to their sluggish kinetics. Exploring suitable materials for use as cathode catalysts can be challenging because the materials should be chemically active yet must be stable in an extremely corrosive environment in fuel cells. Since the successful introduction of graphene, 2-dimensional (2D) materials have received extensive research interest regarding their use as support materials for cathode catalysts due to their large surface area for catalyst dispersion. Recently, research on 2D MXene-based catalyst supports has started to increase. Excellent electronic properties, electrical conductivity, hydrophilicity and chemical and thermal stability are the key properties of potential MXenes used as catalyst supports. Therefore, in this review, the properties and performance of 2D MXene-based catalyst supports in the ORR are comprehensively discussed. This finding provides the groundwork for the exploration of MXenes in electrocatalysis, especially in the ORR. Challenges and future research directions are also discussed in this review.

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Section: Introductionmentioning

confidence: 99%

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

et al. 2021

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“…This further proved that the Fe species on the K-Fe 2 O 3 surface are the main active sites for the K-Fe 2 O 3 /PS/ visible light system. 43 As shown in Fig. 9d, the main peaks of the XRD pattern of the catalyst did not shi aer use.…”

Section: Stability Of K-fe 2 Omentioning

confidence: 95%

The efficient degradation of organic pollutants in an aqueous environment under visible light irradiation by persulfate catalytically activated with kaolin-Fe₂O₃

Xie

Gan

et al. 2020

RSC Adv.

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In recent years, persulfate (PS) has been widely studied as a promising oxidant. In this work, a new K-Fe 2 O 3 catalyst was synthesized via a facile impregnation method. K-Fe 2 O 3 samples were utilized as heterogeneous photocatalysts for the degradation of aquatic organic pollutants (rhodamine, RhB, and ciprofloxacin, CIP). The catalysts showed excellent catalytic activity in the presence of PS under the irradiation of visible light, owing to the generation of SO 4 c À and $OH active radicals. The degradation ratio and COD removal ratio for RhB were 99.8% and 88.3%. More importantly, the system retained a high degradation activity for RhB within a wide operating pH range of 2.9-10. The results of cycling degradation experiments confirmed that the K-Fe 2 O 3 catalyst was stable and recoverable. Large-scale experiments for treating dye wastewater under irradiation by natural sunlight were carried out, showing that this study can provide a new perspective for the treatment of wastewater.

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“…However, in heterogeneous catalysis, they are less used [24]. MXenes were recently applied in water-gas shift reaction [25], dehydrogenation of propane and isobutene [26], nitrogen fixation [27], methane dehydroaromatisation [28], and oxidation reactions [29,30]. As far as we know, these are the only published thermocatalytic applications.…”

Section: Introductionmentioning

confidence: 99%

Enhancing catalytic epoxide ring-opening selectivity using surface-modified Ti₃C₂T _x MXenes

et al. 2021

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MXenes are a new family of two-dimensional carbides and/or nitrides. Their 2D surfaces are typically terminated by O, OH and/or F atoms. Here we show that Ti 3 C 2 T x -the most studied compound of the MXene family-is a good acid catalyst, thanks to the surface acid functionalities. We demonstrate this by applying Ti 3 C 2 T x in the epoxide ring-opening reaction of styrene oxide (SO) and its isomerization in the liquid phase. Modifying the MXene surface changes the catalytic activity and selectivity. By oxidizing the surface, we succeeded in controlling the type and number of acid sites and thereby improving the yield of the mono-alkylated product to >80%. Characterisation studies show that a thin oxide layer, which forms directly on the Ti 3 C 2 T x surface, is essential for catalysing the SO ring-opening. We hypothesize that two kinds of acid sites are responsible for this catalysis: In the MXene, strong acid sites (both Lewis and Brønsted) catalyse both the ring-opening and the isomerization reactions, while in the Mxene-TiO 2 composite weaker acid sites catalyse only the ring-opening reaction, increasing the selectivity to the mono-alkylated product.

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Novel α-Fe2O3/MXene nanocomposite as heterogeneous activator of peroxymonosulfate for the degradation of salicylic acid

Cited by 210 publications

References 58 publications

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

The efficient degradation of organic pollutants in an aqueous environment under visible light irradiation by persulfate catalytically activated with kaolin-Fe₂O₃

Enhancing catalytic epoxide ring-opening selectivity using surface-modified Ti₃C₂T _x MXenes

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Novel α-Fe2O3/MXene nanocomposite as heterogeneous activator of peroxymonosulfate for the degradation of salicylic acid

Cited by 210 publications

References 58 publications

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

A comprehensive review of MXenes as catalyst supports for the oxygen reduction reaction in fuel cells

The efficient degradation of organic pollutants in an aqueous environment under visible light irradiation by persulfate catalytically activated with kaolin-Fe2O3

Enhancing catalytic epoxide ring-opening selectivity using surface-modified Ti3C2T x MXenes

Contact Info

Product

Resources

About

The efficient degradation of organic pollutants in an aqueous environment under visible light irradiation by persulfate catalytically activated with kaolin-Fe₂O₃

Enhancing catalytic epoxide ring-opening selectivity using surface-modified Ti₃C₂T _x MXenes