Fundamentals and some applications of photoelectrocatalysis and effective factors on its efficiency: a review

Zarei, Ebrahim; Ojani, Reza

doi:10.1007/s10008-016-3385-2

Cited by 70 publications

(37 citation statements)

References 126 publications

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“…The improvement of pollutant removal efficiency in the photoelectrocatalytic process requires the consideration of all parameters influencing both electrochemical and photochemical processes and including the proper selection of a semiconductor material as well as the process parameters. The most important factors influencing efficiency of the photoelectrocatalytic process are, as follows [53]: photoelectrode type; light source and its intensity; pH solution value; supporting electrolyte-its type and concentration; counter electrode type; thickness of semiconductor film on electrode surface; applied potential or current; and, design of photoelectrochemical reactor.…”

Section: Speciesmentioning

confidence: 99%

“…The photoelectrocatalytic treatment of wastewater requires an application of constant bias potential to a photoelectrode or constant current [53]. Photoreactors are usually equipped with three or two electrode systems, depending on the operation conditions.…”

Section: Applied Potential or Currentmentioning

confidence: 99%

“…Other factors, like scavengers, should also be considered along with the external bias, since they can reduce recombinations, due to bulk and surface recombinations. However, very fast recombinations with lifetime of picoseconds or nanoseconds are possible, and result in low quantum yield [53].…”

Section: Counter Electrodementioning

confidence: 99%

“…The semiconductor film should not be too thin because of the insufficient absorption of the light resulting in low efficiency of a photoelectrocatalytic process. Semiconductor film that is too thick can scatter or screen the light and also causes the efficiency of the process to be too low [53]. This is related to dense and compact films of a semiconductor.…”

Section: Semiconductor Thicknessmentioning

confidence: 99%

“…However, additional parameters should be also taken under consideration: temperature, dissolved oxygen, etc. [53]. The immobilized system seems to have more advantages due to the elimination of necessary post treatment of wastewater used in order to remove a photocatalyst.…”

Section: Reactor Designmentioning

confidence: 99%

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Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Kuśmierek

2020

Catalysts

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Industrial sources of environmental pollution generate huge amounts of industrial wastewater containing various recalcitrant organic and inorganic pollutants that are hazardous to the environment. On the other hand, industrial wastewater can be regarded as a prospective source of fresh water, energy, and valuable raw materials. Conventional sewage treatment systems are often not efficient enough for the complete degradation of pollutants and they are characterized by high energy consumption. Moreover, the chemical energy that is stored in the wastewater is wasted. A solution to these problems is an application of photoelectrocatalytic treatment methods, especially when they are coupled with energy generation. The paper presents a general overview of the semiconductor materials applied as photoelectrodes in the treatment of various pollutants. The fundamentals of photoelectrocatalytic reactions and the mechanism of pollutants treatment as well as parameters affecting the treatment process are presented. Examples of different semiconductor photoelectrodes that are applied in treatment processes are described in order to present the strengths and weaknesses of the photoelectrocatalytic treatment of industrial wastewater. This overview is an addition to the existing knowledge with a particular focus on the main experimental conditions employed in the photoelectrocatalytic degradation of various pollutants with the application of semiconductor photoelectrodes.

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Section: Speciesmentioning

confidence: 99%

Section: Applied Potential or Currentmentioning

confidence: 99%

Section: Counter Electrodementioning

confidence: 99%

Section: Semiconductor Thicknessmentioning

confidence: 99%

Section: Reactor Designmentioning

confidence: 99%

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Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Kuśmierek

2020

Catalysts

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Single‐Molecule Fluorescence Imaging of Nanocatalysis

Xiao

2021

Chin. J. Chem.

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What is the most favorite and original chemistry developed in your research groupOur most favorite chemistry is the single-molecule nanocatalysis of the energy process. How do you get into this specific field?Could you please share some experiences with our readers? I got into this field firstly in 2007 as a postdoctoral in Prof. Peng Chen's lab at Cornell University. Due to the structural heterogeneity of nanoparticles, the structure-activity relationship of nanocatalysts is challenging to characterize precisely in ensemble-averaged measurements. At that time, the single-molecule approach has been adopted extensively in biological field. Prof. Peng Chen wanted to extend such technique to the field of nanocatalysis, so what I first achieved in his lab was the first kinetic study of single-molecule nanocatalysis of individual nanoparticles to reveal new catalytic properties at the single-particle level with real-time single-turnover resolution, including the heterogeneous reactivity and selectivity of individual nanoparticles. At present, single-molecule fluorescence microscopy (SMFM) has been applied to investigate all kinds of nanocatalysis, such as electrocatalysis, photocatalysis and photoelectrocatalysis, etc. While our group mainly focuses on the application of SMFM in energy process-related basic research. What is the most important personality for scientific research?Enthusiasm, independent-thinking, concentration and desire for knowledge. What are your hobbies? What's your favorite book(s)?Hiking, reading and listening to music at leisure time. I like Green Miles. Could you please give us some advices on improving Chinese Journal of Chemistry?Maybe you can pay more attention to young researchers.

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Photoelectrochemical‐assisted Batch Injection Analysis (PEC‐BIA) of Glucose Exploiting Visible LED Light as an Excitation Source

et al. 2020

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This work describes the development of a novel method for glucose determination exploiting a photoelectrochemical‐assisted batch injection analysis cell designed and constructed with the aid of 3D printer technology. The PEC‐BIA cell was coupled to a LED lamp in order to control the incidence of light on the Cu2O/Ni(OH)2/FTO photoelectroactive platform. The electrochemical characteristics of Cu2O/Ni(OH)2/FTO photoelectroactive platform were evaluated by cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy. The PEC‐BIA cell presented linear response range, limit of detection based on a signal‐to‐noise ratio of three, and sensitivity of 1–1000 μmol L−1, 0.76 μmol L−1 and 0.578 μA L μmol−1, respectively. The PEC‐BIA method presented a mean value of the recovery values of 97.0 % to 102.0 % when it was applied to glucose determination in artificial blood plasma samples which indicates the promising performance of the proposed system to determine glucose.

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Fundamentals and some applications of photoelectrocatalysis and effective factors on its efficiency: a review

Cited by 70 publications

References 126 publications

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Semiconductor Electrode Materials Applied in Photoelectrocatalytic Wastewater Treatment—an Overview

Single‐Molecule Fluorescence Imaging of Nanocatalysis

Photoelectrochemical‐assisted Batch Injection Analysis (PEC‐BIA) of Glucose Exploiting Visible LED Light as an Excitation Source

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