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Application of Functional Film/Coating Materials in Electrocatalysis, Electroanalysis and Electrosynthesis
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Application of Functional Film/Coating Materials in Electrocatalysis, Electroanalysis and Electrosynthesis

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Thin Films and Interfaces".

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 7796

Special Issue Editor

Prof. Dr. Qiuping Wei

E-Mail Website
Guest Editor
School of Materials Science and Engineering, Central South University, Changsha, China
Interests: environmental electrochemistry; electrochemical sensors; biosensors; coating for anti-biofouling; water treatment; ozone electrosynthesis

Special Issue Information

Dear Colleagues,

The applications of functional film/coating materials in electrocatalysis, electroanalysis and electrosynthesis have attracted unprecedented attention during the past decades. From the research and improvement of various types of batteries, electrocatalytic oxidation of water treatment, hydrogen and oxygen evolution and carbon dioxide reduction to the field of electrical analysis of biosensors, trace pollutant monitoring and organic electrochemical synthesis, functional membrane/coating materials play an indispensable role. In recent decades, in spite of significant progress regarding electrochemical technologies, there still exist unfavorable limitations in various application fields. The high catalytic activity of various electrocatalysts and their cycling stability, the anti-interference performance of various sensors, the biocompatibility during in vivo detection and others are yet to be improved. The energy consumption and yield of electrosynthesis are also worth taking into consideration. Issues of electrode scaling/biological scaling, electrode deactivation, electrode surface structural defects, theoretical modeling or calculation of pollutant oxidation still need further improvement.

In this Special Issue, the latest applications and research of functional film/coating materials in the fields of electrocatalysis, electroanalysis and electrosynthesis will be highlighted and discussed.

It is my great pleasure to invite you to submit a manuscript for this Special Issue. Full papers, communications and reviews are all welcome.

Prof. Dr. Qiuping Wei
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • electrocatalysis
  • electroanalysis
  • electrosynthesis
  • batteries
  • water treatment
  • oxygen/hydrogen evolution
  • carbon dioxide conversion
  • organic electrochemical synthesis

Published Papers (3 papers)

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Research

18 pages, 7288 KiB  
Article
Electrocatalytic Degradation of Levofloxacin, a Typical Antibiotic in Hospital Wastewater
by Hongxia Lv, Peiwei Han, Xiaogang Li, Zhao Mu, Yuan Zuo, Xu Wang, Yannan Tan, Guangxiang He, Haibo Jin, Chenglin Sun, Huangzhao Wei and Lei Ma
Materials 2021, 14(22), 6814; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14226814 - 11 Nov 2021
Cited by 12 | Viewed by 2194
Abstract
Presently, in the context of the novel coronavirus pneumonia epidemic, several antibiotics are overused in hospitals, causing heavy pressure on the hospital’s wastewater treatment process. Therefore, developing stable, safe, and efficient hospital wastewater treatment equipment is crucial. Herein, a bench-scale electrooxidation equipment for [...] Read more.
Presently, in the context of the novel coronavirus pneumonia epidemic, several antibiotics are overused in hospitals, causing heavy pressure on the hospital’s wastewater treatment process. Therefore, developing stable, safe, and efficient hospital wastewater treatment equipment is crucial. Herein, a bench-scale electrooxidation equipment for hospital wastewater was used to evaluate the removal effect of the main antibiotic levofloxacin (LVX) in hospital wastewater using response surface methodology (RSM). During the degradation process, the influence of the following five factors on total organic carbon (TOC) removal was discussed and the best reaction condition was obtained: current density, initial pH, flow rate, chloride ion concentration, and reaction time of 39.6 A/m2, 6.5, 50 mL/min, 4‰, and 120 min, respectively. The TOC removal could reach 41% after a reaction time of 120 min, which was consistent with the result predicted by the response surface (40.48%). Moreover, the morphology and properties of the electrode were analyzed. The degradation pathway of LVX was analyzed using high-performance liquid chromatography–mass spectrometry (LC–MS). Subsequently, the bench-scale electrooxidation equipment was changed into onboard-scale electrooxidation equipment, and the onboard-scale equipment was promoted to several hospitals in Dalian. Full article
(This article belongs to the Special Issue Application of Functional Film/Coating Materials in Electrocatalysis, Electroanalysis and Electrosynthesis)
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9 pages, 2962 KiB  
Article
Boosting Piezo/Photo-Induced Charge Transfer of CNT/Bi4O5I2 Catalyst for Efficient Ultrasound-Assisted Degradation of Rhodamine B
by Yang Wang, Dongfang Yu, Yue Liu, Xin Liu and Yue Shi
Materials 2021, 14(16), 4449; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14164449 - 09 Aug 2021
Cited by 13 | Viewed by 2351
Abstract
Strain-induced internal electric fields present a significant path to boosting the separation of photoinduced electrons and holes. In addition, piezo-induced positive/negative pairs could be released smoothly, taking advantage of the excellent electroconductibility of some conductors. Herein, the hybrid piezo-photocatalysis is constructed by combining [...] Read more.
Strain-induced internal electric fields present a significant path to boosting the separation of photoinduced electrons and holes. In addition, piezo-induced positive/negative pairs could be released smoothly, taking advantage of the excellent electroconductibility of some conductors. Herein, the hybrid piezo-photocatalysis is constructed by combining debut piezoelectric nanosheets (Bi4O5I2) and typical conductor multiwalled carbon nanotubes (CNT). The photocatalytic degradation efficiency that the hybrid CNT/Bi4O5I2 exhibits was remarkably increased by more than 2.3 times under ultrasonic vibration, due to the piezo-generated internal electric field. In addition, the transient photocurrent spectroscopy and electrochemical impedance measurement reveal that the CNT coating on Bi4O5I2 enhances the piezo-induced positive/negative migration. Therefore, the piezocatalytic activity of CNT/Bi4O5I2 could be improved by three times, compared with pure Bi4O5I2 nanosheets. Our results may offer promising approaches to sketching efficient piezo-photocatalysis for the full utilization of solar energy or mechanical vibration. Full article
(This article belongs to the Special Issue Application of Functional Film/Coating Materials in Electrocatalysis, Electroanalysis and Electrosynthesis)
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17 pages, 39678 KiB  
Article
Electrochemical Degradation of Tetracycline Using a Ti/Ta2O5-IrO2 Anode: Performance, Kinetics, and Degradation Mechanism
by Hao Dong, Wanqiang Chi, Ang Gao, Tianyu Xie and Bo Gao
Materials 2021, 14(15), 4325; https://0-doi-org.brum.beds.ac.uk/10.3390/ma14154325 - 02 Aug 2021
Cited by 13 | Viewed by 2481
Abstract
Tetracycline (TC) is widely used in production and in life. The high volume of its use and the difficulty of its disposal have become the most important causes of environmental pollution. A suitable method needs to be found to solve this problem. In [...] Read more.
Tetracycline (TC) is widely used in production and in life. The high volume of its use and the difficulty of its disposal have become the most important causes of environmental pollution. A suitable method needs to be found to solve this problem. In this study, the Ti/Ta2O5-IrO2 electrode was characterized for its surface morphology and crystal composition. The electrochemical catalytic ability of the Ti/Ta2O5-IrO2 electrode was investigated using LSV and CV tests. The electrochemical degradation of tetracycline (TC) in water with a Ti/Ta2O5-IrO2 anode was investigated. The main influence factors, such as current density (2.5–10 mA/cm2), electrode spacing (20–40 mm), initial TC concentration (20–80 mg/L) and initial solution pH (4.74–9.48) were analyzed in detail and their influences on reaction kinetics was summed up. The removal rate increased along with the increasing current density, decreasing initial TC concentration and decreasing of electrode distance under the experimental conditions. The optimum pH was 4.74. UV–vis, total organic carbon (TOC) and high-performance liquid chromatography-mass spectrometry (HPLC-MS) analyses were used to reveal the mechanism of TC degradation. Nine main intermediates were identified, and the degradation pathways were proposed. A new insight has been postulated for the safe and efficient degradation of TC using the Ti/Ta2O5-IrO2 electrode. Full article
(This article belongs to the Special Issue Application of Functional Film/Coating Materials in Electrocatalysis, Electroanalysis and Electrosynthesis)
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