2012
DOI: 10.1039/c1ce05879g
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Layered indium chalcogenidoantimonates [Me2NH2]2In2Sb2S7-xSex(x = 0, 2.20, 4.20, 7) with tunable band gaps and photocatalytic properties

Abstract: Two novel indium chalcogenidoantimonates and their quaternary mixed solid solutions with a layered structure of [In 2 Sb 2 S 7-x Se x ] n 2nÀ are successfully synthesized under mild solvothermal conditions. The compounds show a red-shift of their optical absorption edges and exhibit tunable photocatalytic activity for degradation of methyl orange (MO) with a shift of optical response from UV to the visible light region, as the proportions of Se increase.

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Cited by 49 publications
(41 citation statements)
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“…Each Zn(NH 3 )Se 3 unit is bound to three SbSe 3 fragments via three shared corners as well as each SbSe 3 group is surrounded by three Zn(NH 3 2+ cationic complexes and additionally of three molecules of ammonia per formula unit, which do not show any coordination. The polarity of the structure of 4 is based on the in each case concordant orientation of the SbSe 3 pyramids, the [Zn(NH 3 [45] since in their structure metal atoms are covalently bound in polyanionic selenidoantimonate chains. The structure of [Zn(tren)]Sb 4 S 7 [17] contains a pentacoordinate zinc atom bound to thioantimonate chain by one Zn-S bond only.…”
Section: Crystal Structuresmentioning
confidence: 99%
“…Each Zn(NH 3 )Se 3 unit is bound to three SbSe 3 fragments via three shared corners as well as each SbSe 3 group is surrounded by three Zn(NH 3 2+ cationic complexes and additionally of three molecules of ammonia per formula unit, which do not show any coordination. The polarity of the structure of 4 is based on the in each case concordant orientation of the SbSe 3 pyramids, the [Zn(NH 3 [45] since in their structure metal atoms are covalently bound in polyanionic selenidoantimonate chains. The structure of [Zn(tren)]Sb 4 S 7 [17] contains a pentacoordinate zinc atom bound to thioantimonate chain by one Zn-S bond only.…”
Section: Crystal Structuresmentioning
confidence: 99%
“…In the former ribbon, the alternating connection of two {In3S 4 } tetrahedra and two {Sb2S 3 } trigonal pyramids gives rise to a tetranuclear heterometallic {In 2 Sb 2 S 10 } cluster, which further connects with the neighboring ones by edge-sharing (In3−S7−Sb2). Such an {In 2 Sb 2 S 8 } n ribbon has only been reported in [(Me) 2 NH 2 ] 2 [In 2 Sb 2 S 7 ], 43 55 The {In 2 SbS 8 } clusters arrange along the b axis and share the S3 ions to generate an infinite {In 2 SbS 7 } n ribbon. A pair of such ribbons further merges into a double-ribbon of {In 4 Sb 2 S 12 } n by sharing the common S4 ions.…”
Section: ■ Results and Discussionmentioning
confidence: 98%
“…43,47,48 Under solvothermal conditions, the reactions provide in situ formed [(Me) 2 NH 2 ] + cation due to the hydrolysis of DMF, filling in the space around inorganic framework and balancing its negative charges.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…Chalcogenides contain Group 15 elements have been drawing more and more attentions due to their structural diversity [1][2][3][4][5][6], and tremendous potential applications as nonlinear optics [7][8][9], thermoelectric device [10][11][12], ion exchange [13][14][15][16], and photocatalysis [17][18][19]. Thioarsenates(III), a subclass of chalcogenides, typically demonstrate a special structural feature of the stereochemically active 4s 2 lone pair electrons associated with As(III) [1,3].…”
Section: Introductionmentioning
confidence: 99%