Peng Wu's research while affiliated with South China University of Technology and other places

... The electrochemical properties of supercapacitors on the basis of Ni materials and CNTs composite electrodes have been reported in [158]. A typical battery-type electrode of NiCo 2 S 4 /CNTs prepared by Yao et al. [159] exhibited ultrahigh specific capacitance of 1123 F g -1 at 0.5 A g -1 , superior stability, and good energy storage ability. A supercapacitor constructed from this electrode (cathode) and treated carbon cloth (anode) showed a high energy density of 11.7 Wh kg -1 with good cycling stability. ...

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Recent Advances in Ni-materials/Carbon Nanocomposites for Supercapacitors Electrode

... At present, the thermal-coupled photocatalysis degradation of VOCs has made great progress. Common VOCs, including toluene [120][121][122][123][124], benzene [136], phenol [132,133], and 2,4-dichlorophenol [125][126][127][128], be efficiently degraded under thermal-coupled photocatalysis. Jiang et al. investigated the performance of Pt−Cu/TiO 2 nanocatalysts for photo−thermal catalytic degradation of toluene [120]. ...

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Recent Advancements in Photocatalysis Coupling by External Physical Fields

... Tricobalt tetraoxide has been widely studied because it possesses abundant reactive oxygen species [9,10]. Li et al. [11] developed a cobalt oxide with the presence of vacancies (denoted as Co 3-x O 4-y ), which exhibits better catalytic activity in toluene oxidation than the crystalline catalyst Co 3 O 4 and the catalysts Co 3-x O 4 with only cobalt defects or Co 3 O 4-y with oxygen vacancies. Cerium is widely used due to its excellent oxygen storage capacity, electron-releasing properties, redox and the feasible valence transition from Ce 4+ to Ce 3+ , which effectively enhances the formation of oxygen vacancies [12]. ...

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Preparation of Co/Ce Bimetallic Foam-Based Catalyst for Catalytic Oxidation of Toluene

... The enhanced catalytic activities of perovskite oxide were due to a larger amount of O* and the participation of bulk oxygen in the HCHO oxidation on account of the higher reactivity of Mn 4+ species located in the bulk of the substituted materials. A quenching method can introduce other metals to ABO 3 and boost the oxidation activity of catalyst [88]. The Co 3 O 4 /LaCo x Mn 1− x O 3 was prepared by one-step quenching perovskite-type LaMnO 3 into cobalt nitrate solution. ...

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Catalytic oxidation of volatile organic compounds over manganese-based oxide catalysts: Performance, deactivation and future opportunities

... 100 % oxidation of toluene was achieved in 3 h under 280°C. [126] In addition, cobalt oxides in different molecular formula like other metal oxides have different catalytic activity; nonetheless, its Co 4 + has been proven highly reactive. Co 3 O 4 is the famous cobalt oxide in Co 4 + oxidation states, and it has a very strong acidic site, which promotes strong adsorbate-adsorbent interaction. ...

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Cooperative and Bifunctional Adsorbent‐Catalyst Materials for In‐situ VOCs Capture‐Conversion

... The enthalpic penalties of elemental mixing are overcome by an increase in configurational entropy, which acts to stabilize HEOs, particularly at high temperatures [12]. HEOs have been applied as catalysts and catalyst supports for PGM in the previous literature for oxidation reactions [6,[13][14][15][16][17][18]. In several studies, HEO supports of rock salt and fluorite phases demonstrated the ability to thermally stabilize supported gold, palladium, ruthenium, and platinum species [13,15,16]. ...

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Platinum on High-Entropy Aluminate Spinels as Thermally Stable CO Oxidation Catalysts

... By combining temperature-programmed reduction (TPR) data and CO chemisorbed Fourier-transformed infrared spectroscopy (CO-FTIR), the authors demonstrated the formation and importance of Pt−O v −Ti 3+ sites (O v �oxygen vacancy). Chen et al. 12 further explored the oxide functionalization and its effect on vacancy formation by preparing Pt/TiO 2 catalysts by wet impregnation with [Pt(NH 3 ) 4 ](NO 3 ) 2 and using as support anatase TiO 2 nanosheets doped with nitrogen on the surface. Activation took place under both oxidizing and reducing conditions at 300°C. ...

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Pt Molecularly Defined Precursors to Tune Particle Size and Speciation: Impact on the Reverse Water Gas Shift Reaction

... 11 It is generally agreed that CH 4 total oxidation proceeds through a Mars-Van Krevelen (M-vK) mechanism, during which the hydrocarbon molecules get adsorbed on the metal active sites followed by stepwise oxidation using lattice oxygen. 2 The oxygen vacancies created as a result can be filled by adsorption and dissociation of oxygen from the air during reaction. While supported PdO x nanoparticles are the state-ofthe-art catalytic materials for CH 4 complete oxidation, 12 nonnoble metal oxides such as Co 3 O 4 hexagonal nanosheets, 13,14 Co 3 O 4 nanoparticles, 5,15 Co 3 O 4 nanotubes, 16 CuO nanobelts, 17 bowtie-shaped spinel NiCo 2 O 4 catalysts, 18 and composites such as Co 3 O 4 /CeO 2 , 19 MnO x -NiO 20 and NiO/CeO 2 21 have also proved to be appealing candidates, with the added benefit of being much cheaper than noble metal catalysts. Spinel Co 3 O 4 or NiCo 2 O 4 type materials are among the most attractive as they can deliver complete CH 4 oxidation at temperatures in the neighbourhood of 500 1C. ...

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Crystal Facet Engineering of Spinel NiCo 2 O 4 with Enhanced Activity and Water Resistance for Tuneable Catalytic Methane Oxidation

... [6] Therefore, in light of the escalating emission of VOCs and their consequential hazards, several control technologies have been developed to alleviate the influx of VOCs into the environment. [7,8] Currently, several destruction technologies, including thermal/catalytic oxidation, photocatalytic oxidation, and plasma catalysis, are employed to abate VOCs pollution by converting the VOCs into non or less toxic compounds such as CO 2 and H 2 O. [8,9] Among these technologies, catalytic combustion, which can operate at low-temperature to reduce the energy input, has garnered widespread recognition as one of the most dependable and efficient technique, [1] thereby witnessing extensive deployment by industrial facilities for VOCs treatment. [10] Iron, a representative earth-abundant transition element, [11,12] has evolved into an essential catalytic material and is used as both a support and an active component due to its distinctive physiochemical properties, such as various oxidation valence and large surface area. ...

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A Review on Fe2O3‐Based Catalysts for Toluene Oxidation: Catalysts Design and Optimization with the Formation of Abundant Oxygen Vacancies

... Previous research suggests that interlayer carbon can enhance electronic conductivity, suppress volume strain, and prevent the agglomeration of MoS 2 . For instance, MoS 2 -intercalated carbon hetero-layers [11] , fewlayer MoS 2 bonded with carbon [12] , C/MoS 2 /G Van der Waals (vdW) heterostructures [13] and expanded MoS 2 supported by N/O doped carbon [14] were investigated to have enhanced K + storage performance. Besides, building a three-dimensional (3D) charge transport network within the electrode using carbon structures such as a 3D graphene framework [15] or porous carbon skeleton [16,17] is another effective strategy for boosting K + storage performance, which offers feasible interconnected pathways for fast electron and ion transfer throughout the electrode. ...

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Interlayer expansion and conductive networking of MoS 2 nanoroses mediated by bio-derived carbon for enhanced potassium-ion storage