Multiwalled carbon nanotubes supported palladium–phosphorus nanoparticles for ethanol electrooxidation in alkaline solution

Wu, Ke; Mao, Xiao‐Yuan; Yan, Liang; Chen, Yu; Tang, Yawen; Zhou, Yiming; Lin, Jun; Ma, Chao; Lu, Tianhong

doi:10.1016/j.jpowsour.2012.07.059

Cited by 57 publications

(25 citation statements)

References 46 publications

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“…The P 2p spectrum of Pd-P/NH 2 -SiO 2 (Figure 6e) shows a prominent peak of phosphorus at 103.39 eV, attributed to the elemental red phosphorous P 0 [39]. The spectrum noise impeded the detection of any possible BE difference between the isolated elemental phosphorus and the bonded phosphorus in the alloy, as reported by Lu et al [40], arising from transfer of electrons from Pd to P. However, Belykh et al [41] reported a BE value for phosphorus interacting with metallic palladium in alloy, similar to that reported in the present research, in addition to a peak at higher binding energy, relative to oxidized phosphorous of phosphates derived by the reduction process of NaH 2 PO 2 , which are common in Pd-P alloy prepared by precipitation-reduction method [40,42,43]. Furthermore, the elemental states of phosphorous and palladium reveal that both elements underwent a reduction during the synthesis.…”

Section: Xps Characterizationsupporting

confidence: 90%

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

et al. 2021

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Catalytic aerobic oxidation of benzyl alcohol (BnOH) to benzaldehyde (PhCHO) over supported noble metal catalysts has grabbed the attention of researchers due to the critical role of PhCHO in numerous industrial syntheses. In the present study, a novel catalyst, Pd-P alloy supported on aminopropyl-functionalized mesoporous silica (NH2-SiO2), was prepared through in situ reduction and characterized by BET-BJH analysis, SEM, TEM, XRD, FTIR, TG-DTA, and XPS. Chemical properties and catalytic performance of Pd-P/NH2-SiO2 were compared with those of Pd0 nanoparticles (NPs) deposited on the same support. Over Pd-P/NH2-SiO2, the BnOH conversion to PhCHO was much higher than over Pd0/NH2-SiO2, and significantly influenced by the nature of solvent, reaching 57% in toluene at 111 °C, with 63% selectivity. Using pure oxygen as an oxidant in the same conditions, the BnOH conversion increased up to 78%, with 66% selectivity. The role of phosphorous in improving the activity may consist of the strong interaction with Pd that favours metal dispersion and lowers Pd electron density.

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Section: Xps Characterizationsupporting

confidence: 90%

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

et al. 2021

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“…Noble metals catalysts are central to the development of modern science and technology, which benefits the reduction of toxic pollutants, minimization of waste residues and development of modern synthetic techniques. To maximize the catalytic performance of NMs and reduce the cost, it is necessary to load the NMs on a cheap substrate to produce high‐performance composite catalysts . Ceria has wide and important applications in heterogeneous catalysis, either as the active component or as the support.…”

Section: Tuning the Composition Of Ceria‐based Composite Nanocatalystsmentioning

confidence: 99%

Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

Sun

Yan

2016

Advanced Energy Materials

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138

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The unique electronic configuration and structural properties of ceria make ceria‐based nanomaterials such as morphology‐dependent ceria nanocrystals, rare earth‐doped ceria‐zirconia solid solutions and noble metal‐ceria nanocomposites effective promoters in three‐way catalysts for low‐temperature water‐gas‐shift reaction, preferential oxidation of traces of CO, the treatment of toxic auto‐mobile exhaust, etc. The activities of nanoceria catalysts can be determined by their morphologies, oxygen vacancies, interfacial structures and the type of exposed crystal surfaces, as well as the synergistic effect exhibited by nanocomposites. In this review, the state‐of‐the‐art developments in the well‐controlled synthesis of ceria‐based nanocatalysts and their applications in both environmental and energy fields is summarized. The involved reaction mechanisms are also briefly introduced, and eventually an outlook in the design of novel nanoceria catalysts for valuable energy applications is addressed.

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“…Consequently, this favors the electro‐oxidation of glycerol (GOR). In addition, the fraction of Pd 0 was higher than Pd II , revealing that most of Pd exist as Pd 0 , which confirms that the reduction of Pd 2+ to metallic Pd (Pd 0 ) .…”

Section: Resultsmentioning

confidence: 99%

Pd/CNT Catalysts for Glycerol Electro‐oxidation: Effect of Pd Loading on Production of Valuable Chemical Products

et al. 2020

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Glycerol (C3H8O3), a waste product of biodiesel, is considered as a suitable substrate for electro‐oxidation process to generate high value‐added products. A suitable active catalyst could improve the yield of desirable organic compounds from electro‐oxidation of glycerol. In this work, palladium nanoparticles supported over activated multi‐walled carbon nanotubes (MWCNTs) with varying loadings of 5 %–40 % were prepared using chemical reduction method and used to study their potential for electro‐oxidation of glycerol to produce various high value‐added products. The catalysts were characterized by different physicochemical methods, such as X‐ray diffraction (XRD), N2 adsorption‐desorption, and Transmission electron microscopy (TEM), whereas the electro‐oxidation activity of the catalysts was analysed using cyclic voltammetry (CV) and chronoamperometry (CA), and the products were identified by high performance liquid chromatography (HPLC). The electrochemical surface area (SESA) and mass activity (MA) were increased from 176.98 m2 g−1 to 282.29 m2 g−1 and 12.22 mA mg−1 to 49.53 mA mg−1 by increasing the Pd‐loading from 5 % to 20 %, respectively. While the further increase to 40 % Pd loading, the SESA and MA values decreased to 231.45 m2 g−1 and 47.63 mA mg−1respectively. The results found that the optimum 20 % Pd‐loading showed the excellent electrochemical properties due to uniform distribution of Pd‐metal particles over MWCNTs. High performance liquid chromatography (HPLC) showed the tartronic acid, glyceric acid and glyceraldehyde as dominant products. Mechanism of the reaction has also been proposed based on product distribution.

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Multiwalled carbon nanotubes supported palladium–phosphorus nanoparticles for ethanol electrooxidation in alkaline solution

Cited by 57 publications

References 46 publications

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

A Novel Pd-P Nano-Alloy Supported on Functionalized Silica for Catalytic Aerobic Oxidation of Benzyl Alcohol

Recent Progress in Well‐Controlled Synthesis of Ceria‐Based Nanocatalysts towards Enhanced Catalytic Performance

Pd/CNT Catalysts for Glycerol Electro‐oxidation: Effect of Pd Loading on Production of Valuable Chemical Products

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