Syntheses and catalytic properties of two new multi-manganese-substituted silicotungstates

Huijie Li; Lin Qin; Liao Yuan Yao; Hongjin Lv

doi:10.1080/00958972.2020.1819988

Syntheses and catalytic properties of two new multi-manganese-substituted silicotungstates

Huijie Li
, Lin Qin
, Liao Yuan Yao
, Hongjin Lv^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology
The University of Hong Kong

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Transition-metal-substituted polyoxometalates have attracted attention due to their remarkable physicochemical properties and applications in many research areas. Two new multi-manganese-substituted silicotungstates, tetramer [{Mn₃Cl(OH)₃(SiO₄)}₄(SiW₉O₃₄)₄]^36- (1) and banana-shaped [((MnOH₂)_0.5Mn₂SiW₉O₃₄)₂(SiW₆O₂₆)]^22- (2), were prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FT-IR spectroscopy, etc. Compound 1 comprises four {SiW₉O₃₄} fragments, one {Mn₃Cl(OH)₃}₄ cluster and four {SiO₄} groups; it can form a 1 D-chain by connecting [{Mn₃Cl(OH)₃(SiO₄)}₄(SiW₉O₃₄)₄]³⁶⁻ cluster units with Na⁺ cations. Banana-shaped 2 consists of two {(Mn^IIOH₂)_0.5Mn^III₂SiW₉O₃₄} fragments connected by a hexavacant {SiW₆O₂₆} motif, and it displays an interesting 3-D architecture by bridging banana-shaped [((Mn^IIOH₂)_0.5Mn^III₂SiW₉O₃₄)₂(SiW₆O₂₆)]^18- polyanion with four-member Na-cluster. 3-D packing of 2 along the c-axis creates two types of elliptical channels with sizes of 7.86 Å × 13.35 Å and 16.03 Å × 25.28 Å, respectively. Also, while coupling with [Ir(ppy)₂(dtbbpy)]⁺ as photosensitizer and triethanolamine (TEOA) as sacrificial electron donor, both compounds show decent catalytic activity towards hydrogen production under visible LED light irradiation.

Original language	English
Pages (from-to)	2410-2421
Number of pages	12
Journal	Journal of Coordination Chemistry
Volume	73
Issue number	17-19
DOIs	https://doi.org/10.1080/00958972.2020.1819988
Publication status	Published - 2020

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Polyoxometalates
manganese-substituted silicotungstates
multinuclear manganese
visible-light-driven hydrogen production

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10.1080/00958972.2020.1819988

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@article{8ebafa6aa15f4cf78e0a19d450e77be4,

title = "Syntheses and catalytic properties of two new multi-manganese-substituted silicotungstates",

abstract = "Transition-metal-substituted polyoxometalates have attracted attention due to their remarkable physicochemical properties and applications in many research areas. Two new multi-manganese-substituted silicotungstates, tetramer [\{Mn3Cl(OH)3(SiO4)\}4(SiW9O34)4]36- (1) and banana-shaped [((MnOH2)0.5Mn2SiW9O34)2(SiW6O26)]22- (2), were prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FT-IR spectroscopy, etc. Compound 1 comprises four \{SiW9O34\} fragments, one \{Mn3Cl(OH)3\}4 cluster and four \{SiO4\} groups; it can form a 1 D-chain by connecting [\{Mn3Cl(OH)3(SiO4)\}4(SiW9O34)4]36− cluster units with Na+ cations. Banana-shaped 2 consists of two \{(MnIIOH2)0.5MnIII2SiW9O34\} fragments connected by a hexavacant \{SiW6O26\} motif, and it displays an interesting 3-D architecture by bridging banana-shaped [((MnIIOH2)0.5MnIII2SiW9O34)2(SiW6O26)]18- polyanion with four-member Na-cluster. 3-D packing of 2 along the c-axis creates two types of elliptical channels with sizes of 7.86 {\AA} {\texttimes} 13.35 {\AA} and 16.03 {\AA} {\texttimes} 25.28 {\AA}, respectively. Also, while coupling with [Ir(ppy)2(dtbbpy)]+ as photosensitizer and triethanolamine (TEOA) as sacrificial electron donor, both compounds show decent catalytic activity towards hydrogen production under visible LED light irradiation.",

keywords = "Polyoxometalates, manganese-substituted silicotungstates, multinuclear manganese, visible-light-driven hydrogen production",

author = "Huijie Li and Lin Qin and Yao, \{Liao Yuan\} and Hongjin Lv",

note = "Publisher Copyright: {\textcopyright} 2020 Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2020",

doi = "10.1080/00958972.2020.1819988",

language = "English",

volume = "73",

pages = "2410--2421",

journal = "Journal of Coordination Chemistry",

issn = "0095-8972",

publisher = "Taylor and Francis Ltd.",

number = "17-19",

}

TY - JOUR

T1 - Syntheses and catalytic properties of two new multi-manganese-substituted silicotungstates

AU - Li, Huijie

AU - Qin, Lin

AU - Yao, Liao Yuan

AU - Lv, Hongjin

PY - 2020

Y1 - 2020

N2 - Transition-metal-substituted polyoxometalates have attracted attention due to their remarkable physicochemical properties and applications in many research areas. Two new multi-manganese-substituted silicotungstates, tetramer [{Mn3Cl(OH)3(SiO4)}4(SiW9O34)4]36- (1) and banana-shaped [((MnOH2)0.5Mn2SiW9O34)2(SiW6O26)]22- (2), were prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FT-IR spectroscopy, etc. Compound 1 comprises four {SiW9O34} fragments, one {Mn3Cl(OH)3}4 cluster and four {SiO4} groups; it can form a 1 D-chain by connecting [{Mn3Cl(OH)3(SiO4)}4(SiW9O34)4]36− cluster units with Na+ cations. Banana-shaped 2 consists of two {(MnIIOH2)0.5MnIII2SiW9O34} fragments connected by a hexavacant {SiW6O26} motif, and it displays an interesting 3-D architecture by bridging banana-shaped [((MnIIOH2)0.5MnIII2SiW9O34)2(SiW6O26)]18- polyanion with four-member Na-cluster. 3-D packing of 2 along the c-axis creates two types of elliptical channels with sizes of 7.86 Å × 13.35 Å and 16.03 Å × 25.28 Å, respectively. Also, while coupling with [Ir(ppy)2(dtbbpy)]+ as photosensitizer and triethanolamine (TEOA) as sacrificial electron donor, both compounds show decent catalytic activity towards hydrogen production under visible LED light irradiation.

AB - Transition-metal-substituted polyoxometalates have attracted attention due to their remarkable physicochemical properties and applications in many research areas. Two new multi-manganese-substituted silicotungstates, tetramer [{Mn3Cl(OH)3(SiO4)}4(SiW9O34)4]36- (1) and banana-shaped [((MnOH2)0.5Mn2SiW9O34)2(SiW6O26)]22- (2), were prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FT-IR spectroscopy, etc. Compound 1 comprises four {SiW9O34} fragments, one {Mn3Cl(OH)3}4 cluster and four {SiO4} groups; it can form a 1 D-chain by connecting [{Mn3Cl(OH)3(SiO4)}4(SiW9O34)4]36− cluster units with Na+ cations. Banana-shaped 2 consists of two {(MnIIOH2)0.5MnIII2SiW9O34} fragments connected by a hexavacant {SiW6O26} motif, and it displays an interesting 3-D architecture by bridging banana-shaped [((MnIIOH2)0.5MnIII2SiW9O34)2(SiW6O26)]18- polyanion with four-member Na-cluster. 3-D packing of 2 along the c-axis creates two types of elliptical channels with sizes of 7.86 Å × 13.35 Å and 16.03 Å × 25.28 Å, respectively. Also, while coupling with [Ir(ppy)2(dtbbpy)]+ as photosensitizer and triethanolamine (TEOA) as sacrificial electron donor, both compounds show decent catalytic activity towards hydrogen production under visible LED light irradiation.

KW - Polyoxometalates

KW - manganese-substituted silicotungstates

KW - multinuclear manganese

KW - visible-light-driven hydrogen production

UR - https://www.scopus.com/pages/publications/85091172319

U2 - 10.1080/00958972.2020.1819988

DO - 10.1080/00958972.2020.1819988

M3 - Article

AN - SCOPUS:85091172319

SN - 0095-8972

VL - 73

SP - 2410

EP - 2421

JO - Journal of Coordination Chemistry

JF - Journal of Coordination Chemistry

IS - 17-19

ER -

Syntheses and catalytic properties of two new multi-manganese-substituted silicotungstates

Abstract

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Keywords

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