Abstract
Overall solar water splitting into H2 and O2 using visible light responsive photocatalyst has been considered as a clean, green, and renewable system. CdS with a suitable bandgap (2.25 eV) and band position was for a long time not considered as a promising candidate for overall solar water splitting because of its serious photo-corrosion and rapid charge recombination, although it has considerable photocatalytic activity for H2 generation in a sacrificial agent containing electrolyte. Here, we design a new sandwich-like architecture using CdS nanorods embedded in a p-n junction of MoS2/N-RGO which serves as a novel photocatalytic system that could promote overall water splitting in natural water. It was found that the p-n junction of MoS2/N-RGO not only works as the HER and OER electrocatalyst for H2 and O2 generation respectively, but also facilitates charge separation by its inner electric field. Compared to well-defined thermodynamically favored charge transport, the new charge transfer route in MoS2/CdS/N-RGO splits natural water, resulting in an essential change of the carrier separation mechanism and high anti-corrosion.
| Original language | English |
|---|---|
| Pages (from-to) | 4803-4810 |
| Number of pages | 8 |
| Journal | Journal of Materials Chemistry A |
| Volume | 3 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2015 Mar 7 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
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Tuning the charge transfer route by p-n junction catalysts embedded with CdS nanorods for simultaneous efficient hydrogen and oxygen evolution. / Zhang, Kan; Kim, Wanjung; Ma, Ming; Shi, Xinjian; Park, Jong Hyeok.
In: Journal of Materials Chemistry A, Vol. 3, No. 9, 07.03.2015, p. 4803-4810.Research output: Contribution to journal › Article
TY - JOUR
T1 - Tuning the charge transfer route by p-n junction catalysts embedded with CdS nanorods for simultaneous efficient hydrogen and oxygen evolution
AU - Zhang, Kan
AU - Kim, Wanjung
AU - Ma, Ming
AU - Shi, Xinjian
AU - Park, Jong Hyeok
PY - 2015/3/7
Y1 - 2015/3/7
N2 - Overall solar water splitting into H2 and O2 using visible light responsive photocatalyst has been considered as a clean, green, and renewable system. CdS with a suitable bandgap (2.25 eV) and band position was for a long time not considered as a promising candidate for overall solar water splitting because of its serious photo-corrosion and rapid charge recombination, although it has considerable photocatalytic activity for H2 generation in a sacrificial agent containing electrolyte. Here, we design a new sandwich-like architecture using CdS nanorods embedded in a p-n junction of MoS2/N-RGO which serves as a novel photocatalytic system that could promote overall water splitting in natural water. It was found that the p-n junction of MoS2/N-RGO not only works as the HER and OER electrocatalyst for H2 and O2 generation respectively, but also facilitates charge separation by its inner electric field. Compared to well-defined thermodynamically favored charge transport, the new charge transfer route in MoS2/CdS/N-RGO splits natural water, resulting in an essential change of the carrier separation mechanism and high anti-corrosion.
AB - Overall solar water splitting into H2 and O2 using visible light responsive photocatalyst has been considered as a clean, green, and renewable system. CdS with a suitable bandgap (2.25 eV) and band position was for a long time not considered as a promising candidate for overall solar water splitting because of its serious photo-corrosion and rapid charge recombination, although it has considerable photocatalytic activity for H2 generation in a sacrificial agent containing electrolyte. Here, we design a new sandwich-like architecture using CdS nanorods embedded in a p-n junction of MoS2/N-RGO which serves as a novel photocatalytic system that could promote overall water splitting in natural water. It was found that the p-n junction of MoS2/N-RGO not only works as the HER and OER electrocatalyst for H2 and O2 generation respectively, but also facilitates charge separation by its inner electric field. Compared to well-defined thermodynamically favored charge transport, the new charge transfer route in MoS2/CdS/N-RGO splits natural water, resulting in an essential change of the carrier separation mechanism and high anti-corrosion.
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U2 - 10.1039/c4ta05571c
DO - 10.1039/c4ta05571c
M3 - Article
AN - SCOPUS:84923247240
VL - 3
SP - 4803
EP - 4810
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 9
ER -