We have located links that may give you full text access.
Journal Article
Research Support, Non-U.S. Gov't
Nanotextured Spikes of α-Fe 2 O 3 /NiFe 2 O 4 Composite for Efficient Photoelectrochemical Oxidation of Water.
Langmuir : the ACS Journal of Surfaces and Colloids 2018 March 28
We demonstrate for the first time the application of p-NiFe2 O4 /n-Fe2 O3 composite thin films as anode materials for light-assisted electrolysis of water. The p-NiFe2 O4 /n-Fe2 O3 composite thin films were deposited on planar fluorinated tin oxide (FTO)-coated glass as well as on 3D array of nanospike (NSP) substrates. The effect of substrate (planar FTO and 3D-NSP) and percentage change of each component (i.e., NiFe2 O4 and Fe2 O3 ) of composite was studied on photoelectrochemical (PEC) water oxidation reaction. This work also includes the performance comparison of p-NiFe2 O4 /n-Fe2 O3 composite (planar and NSP) devices with pure hematite for PEC water oxidation. Overall, the nanostructured p-NiFe2 O4 /n-Fe2 O3 device with equal molar 1:1 ratio of NiFe2 O4 and Fe2 O3 was found to be highly efficient for PEC water oxidation as compared with pure hematite, 1:2 and 1:3 molar ratios of composite. The photocurrent density of 1:1 composite thin film on planar substrate was equal to 1.07 mA/cm2 at 1.23 VRHE , which was 1.7 times higher current density as compared with pure hematite device (0.63 mA/cm2 at 1.23 VRHE ). The performance of p-NiFe2 O4 /n-Fe2 O3 composites in PEC water oxidation was further enhanced by their deposition over 3D-NSP substrate. The highest photocurrent density of 2.1 mA/cm2 at 1.23 VRHE was obtained for the 1:1 molar ratio p-NiFe2 O4 /n-Fe2 O3 composite on NSP (NF1-NSP), which was 3.3 times more photocurrent density than pure hematite. The measured applied bias photon-to-current efficiency (ABPE) value of NF1-NSP (0.206%) was found to be 1.87 times higher than that of NF1-P (0.11%) and 4.7 times higher than that of pure hematite deposited on FTO-coated glass (0.044%). The higher PEC water oxidation activity of p-NiFe2 O4 /n-Fe2 O3 composite thin film as compared with pure hematite is attributed to the Z-path scheme and better separation of electrons and holes. The increased surface area and greater light absorption capabilities of 3D-NSP devices result in further improvement in catalytic activities.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app