Sökning: onr:"swepub:oai:DiVA.org:su-187897" > Tailoring the Surfa...
Fältnamn | Indikatorer | Metadata |
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000 | 03776naa a2200397 4500 | |
001 | oai:DiVA.org:su-187897 | |
003 | SwePub | |
008 | 201217s2020 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1878972 URI |
024 | 7 | a https://doi.org/10.1021/acs.inorgchem.0c019472 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Chen, Zheng4 aut |
245 | 1 0 | a Tailoring the Surface Properties of Bi2O2NCN by in Situ Activation for Augmented Photoelectrochemical Water Oxidation on WO3 and CuWO4 Heterojunction Photoanodes |
264 | c 2020-09-04 | |
264 | 1 | b American Chemical Society (ACS),c 2020 |
338 | a print2 rdacarrier | |
520 | a Bismuth(III) oxide-carbodiimide (Bi2O2NCN) has been recently discovered as a novel mixed-anion semiconductor, which is structurally related to bismuth oxides and oxysulfides. Given the structural versatility of these layered structures, we investigated the unexplored photochemical properties of the target compound for photoelectrochemical (PEC) water oxidation. Although Bi2O2NCN does not generate a noticeable photocurrent as a single photoabsorber, the fabrication of heterojunctions with the WO3 thin film electrode shows an upsurge of current density from 0.9 to 1.1 mA cm–2 at 1.23 V vs reversible hydrogen electrode (RHE) under 1 sun (AM 1.5G) illumination in phosphate electrolyte (pH 7.0). Mechanistic analysis and structural analysis using powder X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and scanning transmission electron microscopy energy-dispersive X-ray spectroscopy (STEM EDX) indicate that Bi2O2NCN transforms during operating conditions in situ to a core–shell structure Bi2O2NCN/BiPO4. When compared to WO3/BiPO4, the in situ electrolyte-activated WO3/Bi2O2NCN photoanode shows a higher photocurrent density due to superior charge separation across the oxide/oxide-carbodiimide interface layer. Changing the electrolyte from phosphate to sulfate results in a lower photocurrent and shows that the electrolyte determines the surface chemistry and mediates the PEC activity of the metal oxide-carbodiimide. A similar trend could be observed for CuWO4 thin film photoanodes. These results show the potential of metal oxide-carbodiimides as relatively novel representatives of mixed-anion compounds and shed light on the importance of the control over the surface chemistry to enable the in situ activation. | |
650 | 7 | a NATURVETENSKAPx Kemi0 (SwePub)1042 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciences0 (SwePub)1042 hsv//eng |
700 | 1 | a Corkett, Alex J.4 aut |
700 | 1 | a de Bruin-Dickason, Casparu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)cade6390 |
700 | 1 | a Chen, Jianhongu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)jich2514 |
700 | 1 | a Rokicińska, Anna4 aut |
700 | 1 | a Kuśtrowski, Piotr4 aut |
700 | 1 | a Dronskowski, Richard4 aut |
700 | 1 | a Slabon, Adamu Stockholms universitet,Institutionen för material- och miljökemi (MMK)4 aut0 (Swepub:su)adsl1265 |
710 | 2 | a Stockholms universitetb Institutionen för material- och miljökemi (MMK)4 org |
773 | 0 | t Inorganic Chemistryd : American Chemical Society (ACS)g 59:18, s. 13589-13597q 59:18<13589-13597x 0020-1669x 1520-510X |
856 | 4 | u https://doi.org/10.1021/acs.inorgchem.0c01947y Fulltext |
856 | 4 | u https://pubs.acs.org/doi/pdf/10.1021/acs.inorgchem.0c01947 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-187897 |
856 | 4 8 | u https://doi.org/10.1021/acs.inorgchem.0c01947 |
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