Preparation and characterization of carbon black diamond composite electrodes for anodic degradation of phenol

Ajeel, Mohammed A.; Daud, Wan Mohd Ashri Wan

doi:10.1016/j.electacta.2014.11.163

Cited by 22 publications

(19 citation statements)

References 38 publications

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“…Despite it being biodegradable, the presence of phenol can be growth inhibitory to microorganisms at elevated concentrations [226] thus, its screening and quantification are important. Ajeel et al [227] have developed Brought to you by | University of Gothenburg Authenticated Download Date | 10/11/17 3:18 AM carbon black diamond composite electrodes for anodic degradation of phenol with the removal efficiency for phenol reported of more than 97% after 27 hours at pH 3.…”

Section: Uric Acid Ascorbic Acid and Dopaminementioning

confidence: 99%

Carbon nanomaterials and their application to electrochemical sensors: a review

Power¹,

Gorey²,

Chandra³

et al. 2018

Nano Online

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Carbon has long been applied as an electrochemical sensing interface owing to its unique electrochemical properties. Moreover, recent advances in material design and synthesis, particularly nanomaterials, has produced robust electrochemical sensing systems that display superior analytical performance. Carbon nanotubes (CNTs) are one of the most extensively studied nanostructures because of their unique properties. In terms of electroanalysis, the ability of CNTs to augment the electrochemical reactivity of important biomolecules and promote electron transfer reactions of proteins is of particular interest. The remarkable sensitivity of CNTs to changes in surface conductivity due to the presence of adsorbates permits their application as highly sensitive nanoscale sensors. CNT-modified electrodes have also demonstrated their utility as anchors for biomolecules such as nucleic acids, and their ability to diminish surface fouling effects. Consequently, CNTs are highly attractive to researchers as a basis for many electrochemical sensors. Similarly, synthetic diamonds electrochemical properties, such as superior chemical inertness and biocompatibility, make it desirable both for (bio) chemical sensing and as the electrochemical interface for biological systems. This is highlighted by the recent development of multiple electrochemical diamond-based biosensors and bio interfaces.Keywords: bio sensors; carbon nanomaterials; carbon nanotubes; electrochemical sensing; synthetic diamond Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.

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Section: Uric Acid Ascorbic Acid and Dopaminementioning

confidence: 99%

Carbon nanomaterials and their application to electrochemical sensors: a review

Power¹,

Gorey²,

Chandra³

et al. 2018

Nano Online

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“…A disc of 3 cm diameter of diamond electrode was prepared from nano-diamond particles (Sigma-Aldrich, 98.3% purity and an average particle size 8 nanometer) by mixed 2 gram of nano-particles of diamond carefully with 0.4 gram of carbon black (Sigma-Aldrich, 97 % purity and an average particle size 15 nanometer). Powder mixture was mixed with suspension of 0.07 gram polytetrafluoroethylene (PTFE 60 wt% in water sigma-Aldrich) as the binder and 1,3-propanediol (98% purity, Sigma-Aldrich) and then dried as described in previous work [30]. According to the value of oxygen evolution potential showing in Fig.…”

Section: Electrode Preparationmentioning

confidence: 99%

Development of diamond composite electrode for anodic oxidation of organic pollutants

Ajeel¹,

Hassan²,

Naje

et al. 2018

Journal of Environmental Chemical Engineering

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Nano-diamond composite electrode was prepared and used as anode for anodic oxidation process for organic chemicals. Electrochemical techniques such as impedance and cyclic voltammetry have been used to characterize the diamond composite electrode properties. The oxidation power of the electrode was 0.8 V vs. Ag/AgCl, the charge transfer rate was 12.1 Ohm, and the double layer capacitance was less than 1 µF. The anodic oxidation behavior of p-benzoquinone, 2-chlorophenol, and phenol over diamond composite electrode were investigated by cyclic voltammetry in 0.1 M H2SO4 (pH 3) solution and 0.25 M Na2SO4 (pH 6.8) solution. Results marked that the electro-oxidation of pbenzoquinone was more active than phenol and 2-chlorophenol in the both solutions. The

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“…This compound is frequently detected in the degradation of phenol and benzene 40,55,56 . This compound is frequently detected in the degradation of phenol and benzene 40,55,56 .…”

Section: Effect Of Process Variables On Yieldmentioning

confidence: 99%

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

et al. 2016

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Iron based heterogeneous catalysts are widely used in many industrial applications includingFenton Oxidation Processes (FOPs) to treat the effluents containing recalcitrant contaminants such as dyes. In this work, Metal Organic Framework (MOF) derived iron nano oxide particles supported on ZSM-5 Zeolite were synthesized under the optimized experimental conditions. Central Composite Design (CCD) method was employed to optimize the yield of the catalyst. The catalyst was then characterized using EDX, SEM, HRTEM, FTIR, STA and BET. Subsequently, the catalytic activity of the catalyst in Fenton Oxidation process was evaluated based on the degradation of the model azo dyes, Acid Blue 113, Methyl Orange, and Reactive Black. The optimized experimental yield was 81.5%, which was in agreement with the CCD predicted. Apart from high catalyst's yield, excellent mineralization efficiency was obtained where 77%, 71 % and 68% of Total Organic Carbon (TOC) removal were achieved for Acid Blue 113, Methyl Orange, and Reactive Black 5, respectively. Based on the yield and activity, it was concluded that the synthesized Fe-ZSM-5 is a promising catalyst for Fenton oxidation process.The specific surface area of the support and catalyst (in m2/g) was determined by measuring the volume of N 2 gas, using the BET (Brunauer-Emmett-Teller) method. Table S3 shows the specific surface areas, pore width, and pore volume. Presence of nano sized iron particles reduced the specific surface area of ZSM-5 from 297 to 241m 2 /g. Similarly, the pore volume was also changed from 0.17 to 0.11cm 3 /g. BET analysis confirmed the filling of iron oxide particles in the pores of ZSM-5 matrix 28 . Synthesized Fe-ZSM-5 had greater pore size (2.66 nm) than the parent ZSM-5 (2.45 nm).This may be attributed to multilayer formation of nano sized particles on ZSM-5 support, which can be seen FESEM images (Fig. 2). Changes in the pore size, and surface area were well supported by the literature 7, 28, 42 .Comparison Plot for Fe-MOFs.The optimization of the results obtained through experiments was carried out using Response Surface Methodology (RSM). Responses were kept within the desired ranges while the maximum yield was targeted. The suggested optimized values of temperature (33 o C), time (4 h) and stirrer speed (245 rpm) were validated through the experiment. The approximate yield of the Fe-complexes was 81.5%. There was a good agreement between the predicted and experimental results under optimized environment.Furthermore, in the impregnation step, 82-84% yield of Fe-ZSM-5 was observed. The yield can be further increased up to 90% with an efficient filtration system. Efficiency and Stability Evaluation of the Fe-ZSM-5 catalystExperiments exhibiting Fenton oxidation were carried out to degrade and decolorize three selected dyes. In order to examine the adsorption, the preliminary study was conducted with 100 mg/L of dye concentration. After four hours, percentage of adsorbed Acid Blue 113,

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Preparation and characterization of carbon black diamond composite electrodes for anodic degradation of phenol

Cited by 22 publications

References 38 publications

Carbon nanomaterials and their application to electrochemical sensors: a review

Carbon nanomaterials and their application to electrochemical sensors: a review

Development of diamond composite electrode for anodic oxidation of organic pollutants

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

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