High-efficiency electrochemical degradation of phenol in aqueous solutions using Ni-PPy and Cu-PPy composite materials.
TL;DR: It can be found that the doped Cu-PPy electrodes electrode is a new material with high electrochemical oxidation ability for phenol degradation in aqueous solutions.
About: This article is published in Journal of Hazardous Materials.The article was published on 2022-02-05. It has received 88 citations till now. The article focuses on the topics: Polypyrrole & Aqueous solution.
Citations
More filters
TL;DR: In this article , the negative impacts of microorganisms on living things and how they affect the elimination of heavy metals were discussed and the influence of variables such as ambient factors, sorbing materials, and metals to be removed.
58 citations
TL;DR: In this article , a facile one-pot protocol was used to synthesize Ni-cobalt zeolitic imidazolate framework (Ni-ZIF-67) nanocomposite, which was then characterized by Fourier transform infrared spectroscopy, X-ray diffraction, energy dispersive Xray spectroscopic and scanning electron microscopy.
52 citations
TL;DR: In this article , a photocatalyst was applied in removing penicillin G (PENG) from drug effluents, and the effects of contaminant concentration, initial pH, irradiation time, and zinc oxide ratio in the nanocomposites were investigated.
Abstract: Nowadays, antibiotic water pollution is an increasingly dangerous environmental threat. Thus, water treatment is essential for their reduction and removal. In recent decades, photocatalysts have attracted much attention due to their influential role in solving this issue. The photocatalytic process, which is one of the green processes and part of advanced oxidation processes, can be a good choice for treating contaminated water containing non-degradable organic matter. However, the design of high-performance photocatalysts under free sunlight can be challenging. In this study, g–C3N4–Ca, Mg codoped CoFe2O4–ZnO (gCN–CFO-ZnO) nanocomposite photocatalyst was applied in removing penicillin G (PENG) from drug effluents. Also, the effects of contaminant concentration, initial pH, irradiation time, and zinc oxide ratio in the nanocomposites were investigated. The hydrothermal method was carried out to prepare the appropriate composites. Then, the obtained products were characterized by powder X-Ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FT-IR), Raman, field-emission scanning and transmission electron microscope (FE-SEM&TEM), energy dispersive X-Ray (EDX), diffuse reflectance spectroscopy (DRS), vibrating sample magnetometer (VSM) and Photoluminescence (PL) techniques. According to the findings, the degradation of PENG in an acidic environment occurred remarkably; under the same conditions, with decreasing pH from 9 to 5 in the gCN–CFO–ZnO (33.33%) nanocomposite, the degradation efficiency grew from 47% to 74%. Also, the degradation rate of PENG in gCN–CFO–ZnO (16.66%) and gCN–CFO–ZnO (50%) nanocomposites under optimal conditions (pH = 5, PENG the concentration of 10 ppm, and irradiation time of 120 min) was achieved 52% and 60%, respectively. Further, gCN–CFO–ZnO (33.33%) nanocomposite showed higher efficiency in PENG degradation compared to the other two nanocomposites.
40 citations
TL;DR: In this paper , a review of different hydrogen production methods is presented, and the authors discuss the progress done in the application of ANNs in hydrogen production technologies to maximize the hydrogen productivity and decreasing its cost.
Abstract: The demand for green energy is expanding, and it seems that hydrogen is the best option that can be produced and stored in large quantities. Hydrogen is a promising energy carrier that has various advantages compared to other energy sources. Accordingly, hydrogen is gaining significant attention as a green alternative for transportation, energy sector, and energy storage. The hydrogen-based energy system consists of four major stages: production, storage, safety, and utilization. Artificial neural networks (ANN) is effectively used in predicting optimal operational parameters for hydrogen production from different methods. This review summarizes the different hydrogen production methods. Then it discusses the progress done in the application of ANNs in hydrogen production technologies to maximize the hydrogen productivity and decreasing its cost. The coefficient of determination (R2) and mean squared error (MSE) are used as performance criteria to evaluate the performance of the ANN applied in the different production methods. Future research recommendations and hot research topics are introduced as well.
32 citations
TL;DR: In this paper, a review of recent developments in MXene-based nanocomposites for electrochemical (bio) sensing with a particular focus on the detection of hazardous pollutants, such as organic components, pesticides, nitrite, and heavy metals.
29 citations
References
More filters
TL;DR: Thermodynamic study revealed that the adsorption process is endothermic and spontaneous in nature and the regenerated adsorbent can be reused successfully for two successive adsorptive-desorption cycles without appreciable loss of its original capacity.
522 citations
TL;DR: In this article, a review of composites of conducting polymers with carbonaceous materials, metal oxides, transition metals and transition metal dichalcogenides is presented, which help to explain the conduction mechanism, relevant synthesis approaches, and physical properties including electrical, optical and mechanical properties.
Abstract: Conducting polymers are extensively studied due to their outstanding properties, including tunable electrical property, optical and high mechanical properties, easy synthesis and effortless fabrication and high environmental stability over conventional inorganic materials Although conducting polymers have a lot of limitations in their pristine form, hybridization with other materials overcomes these limitations The synergetic effects of conducting polymer composites give them wide applications in electrical, electronics and optoelectronic fields An in-depth analysis of composites of conducting polymers with carbonaceous materials, metal oxides, transition metals and transition metal dichalcogenides etc is used to study them effectively Here in this review we seek to describe the transport models which help to explain the conduction mechanism, relevant synthesis approaches, and physical properties, including electrical, optical and mechanical properties Recent developments in their applications in the fields of energy storage, photocatalysis, anti-corrosion coatings, biomedical applications and sensing applications are also explained Structural properties play an important role in the performance of the composites
334 citations
TL;DR: The observed characteristics and results obtained in in vitro assays suggest that the copper nanoparticles might be a potential anticancer agent.
308 citations
TL;DR: In this article, a conductivity analysis of polypyrrole/yttrium oxide (PPy/Y2O3) composites was performed by in situ polymerization of pyrrole with Y 2O3 using FeCl3 as an oxidant.
Abstract: Conducting polymer composites of polypyrrole/yttrium oxide (PPy/Y2O3) were synthesized byin situ polymerization of pyrrole with Y2O3 using FeCl3 as an oxidant. The Y2O3 is varied in five different weight percentages of PPy in PPy/Y2O3 composites. The synthesized polymer composites are characterized by infrared and X-ray diffraction techniques. The surface morphology of the composite is studied by scanning electron microscopy. The glass transition temperature of the polymer and its composite is discussed by DSC. Electrical conductivity of the compressed pellets depends on the concentration of Y2O3 in PPy. The frequency dependent a.c. conductivity reveals that the Y2O3 concentration in PPy is responsible for the variation of conductivity of the composites. Frequency dependent dielectric constant at room temperature for different composites are due to interfacial space charge (Maxwell Wagner) polarization leading to the large value of dielectric constant. Frequency dependent dielectric loss, as well as variation of dielectric loss as a function of mass percentage of Y2O3 is also presented and discussed.
266 citations
TL;DR: In this paper, a novel route has been developed to synthesize polypyrrole (PPy)/graphene oxide (GO) nanocomposites via liquid/liquid interfacial polymerization where GO and initiator was dispersed in the aquous phase and the monomer was dissolved in the organic phase.
248 citations