Preparation of Pd/GO/Ti electrode and its electrochemical degradation for 2,4-dichlorophenol

Zhang, Jian; Liu, Huiling; Wang, Bing; Thabit, Mohamed; Bai, Haina

doi:10.1016/j.matdes.2015.07.146

Cited by 26 publications

(5 citation statements)

References 34 publications

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“…In addition, reducing the Pd loading on the Pd/STO-D2 electrode to 0.8 mg, the mass activity for EHDC of 2,4-DCP was further increased to 7.12 min –1 ·g –1 (Figure b). By comparing the mass activity with those reported in the literature under similar conditions, ,,,,,− Pd/STO-D2 was among the most active EHDC catalysts (Figure c). Thus, the use of STO-D as a support greatly helped to reduce the precious Pd required for EHDC of 2,4-DCP.…”

Section: Resultssupporting

confidence: 55%

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

Shu,

Tang,

Huang

et al. 2024

Ind. Eng. Chem. Res.

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Chlorophenols (CPs) are toxic, persistent organic pollutants in the environment because they are extremely stable and not easily biodegradable naturally. Improving the mass activity of Pd is essential to facilitating the development of Pd-mediated electrocatalytic hydrodechlorination (EHDC) for the detoxification of CPs. Herein, we demonstrated that the interaction of Pd with SrTiO 3 (Pd/STO) significantly improved the EHDC performance. Specifically, Pd interacting with dodecahedral SrTiO 3 (Pd/STO-D) afforded a mass activity of 6.38 min −1 •g −1 , which was approximately 1.7 and 1.4 times higher than that of Pd/C (carbon black) and Pd/STO-C (cubic SrTiO 3 ). Such high mass activity made Pd/STO-D stand out among the reported Pd-based catalysts. The enhanced EHDC performance was attributed to the electrons of Pd optimized by STO-D being in an electron-rich microenvironment, which intensified the adsorption and activation of the pollutant as well as the desorption of phenol (the product). This work promotes EHDC technology with low cost and high efficiency to reduce CPs pollution and toxicity.

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Section: Resultssupporting

confidence: 55%

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

Shu,

Tang,

Huang

et al. 2024

Ind. Eng. Chem. Res.

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“…In addition, the kinetics of different sample photocatalytic degradation organic pollutants can be evaluated according to the Allen Xinzher (L-H) power equation (Eq. 6) [40] C 0 in the formula is not obtained before the photocatalytic degradation of the MO solution, C t is the concentration of MO at the time t after photocatalysis, k is the photocatalytic degradation rate constant, and t is the time of ultraviolet light irradiation.…”

Section: Resultsmentioning

confidence: 99%

MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

Zhou

Jiresse

Zhang

et al. 2021

Journal of Materials Research

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The photodegradation technology can improve the status quo of environmental problems seriously which hindered the development and progress of human society. In this work, the two-dimensional transition metal carbide Ti 3 C 2 was prepared by HF etching of Ti 3 AlC 2 , and subsequently TiO 2 crystals were produced by hydrothermal method to prepare TiO 2 /Ti 3 C 2 composite. The Ag nanoparticles were then doped by photoreduction to form a ternary Ag/TiO 2 /Ti 3 C 2 composite. The effect of photocatalytic degradation of the methyl orange solution by Ag/TiO 2 /Ti 3 C 2 was investigated. The degradation only with Ag/TiO 2 /Ti 3 C 2 is worser than TiO 2 /Ti 3 C 2 , so H 2 O 2 was added to improve the catalytic ability and explore the photocatalytic mechanism. In 420 min, the degradation efficiency of methyl orange (MO) solution reached 71.09% due to the active-free radicals preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials.

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“…Therefore, similarly to MXene-metal nanoparticles nanohybrides, graphene oxide has been also employed for synthesis of GO-metal nanoparticles hybrid nanomaterials which exhibited good electrocatalytic properties. Examples include Au nanoparticles decorated GO employed for determination of chloramphenicol (no dechlorination, but reduction of nitro-group observed) 55 , Pd/GO/Ti nanohybrid employed for electrodegradation of 2,4-dichlorophenol 56 or GO-Ag nanoparticles for detection of hydrogen peroxide 57 . Furthermore, in our previous study it was found that silver nanoparticles deposited on the surface of electrochemically reduced graphene oxide can provide electrochemical signal related to metazachlor dechlorination, but without a focus on its quantitative determination 54 .…”

Section: Introductionmentioning

confidence: 99%

Silver Integrated with Carbonaceous 2D Nanomaterials as an Electrocatalyst for Reductive Dechlorination of Chloroacetanilide Herbicide

Filip

Vinter

Skácelík

et al. 2021

J. Electrochem. Soc.

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In this work silver nanoparticles (AgNPs) were in situ synthesized on surface of graphene oxide (GO) and Ti3C2TX MXene at room temperature and without any reducing agent. The prepared GO_AgNPs and MX_AgNPs nanomaterials were deposited on electrodes and applied for voltammetric sensing of pesticide metazachlor. The chosen analyte underwent electrochemical reduction readable as faradaic current and identified as the electrochemical reductive dechlorination. It was found that GO_AgNP (electrochemically reduced to ErGO_AgNP before measurements) was more efficient catalyst of the observed dechlorination than MX_AgNP, even though it contained approximately 10-fold lower amount of silver. The smaller size of AgNP achieved with GO was the most probable reason. When the metazachlor sensing properties of the nanohybrid-modified electrodes were investigated, the linear range and the limit of detection of 37–1123 μM and 27 μM, respectively, were observed for ErGO_AgNP while only 37–375 μM and 40 μM for MX_AgNP. The ErGO_AgNP nanohybrid was more convenient also for metazachlor detection in alkali leachate of real soil samples, probably as the result of antifouling effect of ErGO. Although there are conventional instrumental analysis methods for sensing orders of magnitude lower concentrations of metazachlor, in this work it is for the first time shown that the AgNP-based nanohybrid efficiently catalyse the electrochemical dechlorination applicable for detection of this frequently used pesticide.

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Preparation of Pd/GO/Ti electrode and its electrochemical degradation for 2,4-dichlorophenol

Cited by 26 publications

References 34 publications

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

Silver Integrated with Carbonaceous 2D Nanomaterials as an Electrocatalyst for Reductive Dechlorination of Chloroacetanilide Herbicide

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Preparation of Pd/GO/Ti electrode and its electrochemical degradation for 2,4-dichlorophenol

Cited by 26 publications

References 34 publications

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO3-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO3-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

Silver Integrated with Carbonaceous 2D Nanomaterials as an Electrocatalyst for Reductive Dechlorination of Chloroacetanilide Herbicide

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Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination

Tuning the Relative Binding Strengths of Reactants to Products on Shape-Controlled SrTiO₃-Supported Palladium for an Enhanced Electrocatalytic Hydrodechlorination