Investigation of 2D-layered photocatalytic semiconductors with enhanced heterojunction region for photocatalytic degradation
An effective approach to realize high-efficiency photocatalysts is the stable formation of heterojunction composite and increasing the junction area. We report that a facile fabrication method was proposed to form a stable heterojunction composite of SnS 2 /g-C 3 N 4 , and a favorable coupling of Sn...
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Veröffentlicht in: | Journal of materials science. Materials in electronics 2024-06, Vol.35 (18), p.1236, Article 1236 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | An effective approach to realize high-efficiency photocatalysts is the stable formation of heterojunction composite and increasing the junction area. We report that a facile fabrication method was proposed to form a stable heterojunction composite of SnS
2
/g-C
3
N
4
, and a favorable coupling of SnS
2
and g-C
3
N
4
at the interfaces was aimed at maximizing the heterojunction area. The degradation of methylene blue (MB) dye under exposure to low-power visible LED was sufficiently enhanced by the synthesized SnS
2
/g-C
3
N
4
photocatalyst. From the experiments, the SnS
2
nanosheet/g-C
3
N
4
microsheet heterostructure exhibited a high apparent pseudo-first order rate constant
k
of 0.0274 min
−1
, four and two times higher than the
k
value of SnS
2
and g-C
3
N
4
, respectively. The cyclic experiments showed that the as-prepared heterojunctions exhibited good stability even without recovery treatment. X-ray photoelectron spectroscopy (XPS) analysis and MB adsorption curves explained the mechanism of the enhanced photocatalytic performance by increasing the 2D/2D heterojunction area. This study provides an efficient method for designing effective two-dimensional heterojunctions for photocatalytic applications. |
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ISSN: | 0957-4522 1573-482X |
DOI: | 10.1007/s10854-024-12945-2 |