The nanostructured heterojunction photocatalysts are considered promising in photocatalytic reduction in the carbon dioxide. Herein, we demonstrate a simple sol–gel and hydrolysis process to design nanostructured TiO2/ZnO heterojunction, by using the biological template celery stalk. The nanostructured photocatalyst consists of anatase TiO2 and wurtzite ZnO nanoparticles. A well-connected heterojunction, with uniformly distributed nanoparticles, on the pores and folds of celery stems, is obtained. The enhanced specific surface area of 55.5 m2/g is achieved. The crystal structure, morphology and surface composition are investigated by electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. Furthermore, we demonstrate the photocatalytic performance of as-synthesized nanostructure TiO2/ZnO heterojunction. The photocatalytic yield, of CO2 reduction into CH4, exhibits a five times increase, from 0.55 to 2.56 µmol h−1 g−1, for the nanocomposite as compared to the pure TiO2. This enhanced performance corresponds to the efficient charge transfer and hindrance in the recombination of electron–hole pairs due to the optimum band positions of ZnO and TiO2. This study demonstrates the potential of using biotemplates to design efficient photocatalysts to convert CO2 into useful solar fuels.
Journal of Materials Science – Springer Journals
Published: May 9, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera