eprintid: 12964
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/29/64
datestamp: 2023-11-10 03:27:31
lastmod: 2023-11-10 03:27:31
status_changed: 2023-11-10 01:49:59
type: article
metadata_visibility: show
creators_name: Rouhi, J.
creators_name: Kakooei, S.
creators_name: Sadeghzadeh, S.M.
creators_name: Rouhi, O.
creators_name: Karimzadeh, R.
title: Highly efficient photocatalytic performance of dye-sensitized K-doped ZnO nanotapers synthesized by a facile one-step electrochemical method for quantitative hydrogen generation
ispublished: pub
keywords: Aromatic compounds; Aspect ratio; Current density; Degradation; Energy gap; Hydrogen production; II-VI semiconductors; Morphology; Oxide minerals; Photocatalytic activity; Semiconductor quantum wells; Surface morphology; Zinc oxide, Band gap shifting; Controllable morphology; ELectrochemical methods; Hydrogen generations; Photocatalytic H2 evolution; Photocatalytic performance; Photocurrent response; UV-visible spectrometers, Potassium compounds
note: cited By 46
abstract: The different morphologies of K-doped ZnO nanostructures were successfully synthesized by a facile one-step electrochemical method using control of the current density. Field emission electron microscope images showed various morphologies and aspect ratios due to change in the value of applied current densities. Photoluminescence and UV-visible spectrometers showed that change in current densities leads in different level of defects and band gap shifting. The photocurrent responses reveal that the photocurrent intensity increases as K-doped ZnO surface morphology tends to taper on the application of 0.5 mA cm�2 current density. The maximum degradation rate of methylene blue was attained to be 99.3 within the 60 min using K-doped ZnO nanotapers which was much higher than the values found in previous studies. The highest photocatalytic H2 evolution activities were obtained in the applied current density of 0.5 mA cm�2 in comparison to other samples. These results indicate that doping and controllable morphology are effective and facile methods to improve the photocatalytic features of ZnO by boosting the absorption of light. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
date: 2020
publisher: Springer
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85086344432&doi=10.1007%2fs10008-020-04695-y&partnerID=40&md5=a44355616e18dbab9432d186cdbe660b
id_number: 10.1007/s10008-020-04695-y
full_text_status: none
publication: Journal of Solid State Electrochemistry
volume: 24
number: 7
pagerange: 1599-1606
refereed: TRUE
issn: 14328488
citation:   Rouhi, J. and Kakooei, S. and Sadeghzadeh, S.M. and Rouhi, O. and Karimzadeh, R.  (2020) Highly efficient photocatalytic performance of dye-sensitized K-doped ZnO nanotapers synthesized by a facile one-step electrochemical method for quantitative hydrogen generation.  Journal of Solid State Electrochemistry, 24 (7).  pp. 1599-1606.  ISSN 14328488