INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Bo Zhang,Jun Li,Ming Pang,Ying-Shuo Wang,Meng-Zhen Liu,Hui-Meng Zhao
Using in situ formed metal complexes of [Fe(bipy)3]2+ or [Ni(bipy)3]2+ (bipy = 2,2′-bipyridine) as templates, four new Ag–Bi–X (X = I and Br) compounds are first isolated in the metal-complex-decorated heterometallic halobismuthate family, namely [M(bipy)3]AgBiI6 (M = Fe (1), Ni (2)), [Fe(bipy)3]AgBiBr6 (3), and [Ni(bipy)3]AgBiBr6 (4). Compounds 1–4 feature discrete [AgBiX6]n2n– anions, exhibiting three polymorphisms that may be ascribed to the different stackings and the flexible condensations of [BiX6] octahedrons and [AgX4] tetrahedra/[AgX3] triangles. UV–vis diffuse reflectance analyses reveal that they are narrow band gap semiconductor materials (ca. 1.82–2.13 eV). Intriguingly, the title compounds display excellent photoelectrical switching properties, with photocurrent density following the order 3 > 4 > 2 > 1. In addition, the comparative studies of intermolecular interactions, theoretical band structures, density of states, and effective masses of three polymorphisms have also been investigated.
研究领域:
无机化学
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材料科学
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理论计算
✓ 已验证
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 24
·5270-5276
·
IF 6.569
Shiwei Liu,Jiale Chen,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
The dimensional reduction theory is applied to an A2O–P2O5–Bi2O3 system where P2O5 serves as a binary parent while A2O and Bi2O3 are regarded as dimensional reduction agents. Thus, three novel phosphates ACs5Bi4(PO4)2(P2O7)3 (A = K, Rb and Cs) have been prepared through the high-temperature solution method. Single-crystal X-ray diffraction measurements reveal that they all crystallize in the monoclinic space group P21/c (no. 14) and in their structures, two different kinds of P–O units, i.e. isolated PO4 tetrahedra and P2O7 dimers, are interconnected by Bi–O groups to construct a 3∞[Bi4(PO4)2(P2O7)36−] framework. Note that with the change of cationic size in their structures, the Bi3+ cations also exhibit flexible coordination, i.e. BiO5 and BiO6 polyhedra in KCs5Bi4(PO4)2(P2O7)3 and only BiO6 polyhedra in Cs6Bi4(PO4)2(P2O7)3, suggesting that combining the flexible coordination of Bi3+ cations with phosphates based on dimensional reduction theory is an effective strategy to guide the synthesis of new compounds.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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2024
·
IF 2.2
Shu-Yue Xie,Bao-Han Li,Jia-Qi Li,Jiu-Jiang Dong,Xiao-Chen Ren,Bo Zhang,Jun Li,Xiao-Ying Huang
Employing metal complex cations as the structural modifiers, three new numbers of hybrid halobismuthates family, namely [NH4][Co(phen)3]BiI6 (phen = 1,10-phenanthroline; 1), [Zn(phen)2Br][Bi(phen)Br4]·H2O (2) and [Cu(2,2'-bipy)2Br][Cu(2,2'-bipy)2Bi2Br9]·H2O (2,2'-bipy = 2,2'-bipyridine; 3) have been solvothermally constructed and structurally characterized. X-ray crystallography analyses show that all compounds characteristic of abundant weak interactions feature the discrete anionic motifs. The obtained hybrid materials possess the semiconducting nature, with the visible light responding optical band gaps of 2.13−2.71 eV. Under the alternating light irradiation, they exhibit excellent photoelectric switching properties, whose photocurrent densities (0.85, 0.24 and 0.43 μA/cm2 for compounds 1−3, respectively) compare well with some high-performance halobismuthate competitors. Further theoretical calculations of compound 1 reveal that the photosensitive [Co(phen)3]2+ cations contribute greatly to the bottom of conduction bands (CBs) and the top of valence bands (VBs), which may be the important reason for its excellent photoelectric behavior. The analyses of Hirshfeld surface, thermal stability and X-ray photoelectron spectroscopy were also discussed detailedly in this paper.
研究领域:
材料化学
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晶体学
·
理论化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 10
·2999-3005
·
IF 4
Jun Li,Ming-Hui Liu,Hong-Yao Shen,Meng-Zhen Liu,Jin-Ting Wu,Bo Zhang
Pursuits of new types of Pb-free heterometallic halides adequate for photovoltaic applications are still urgent but challenging. In this study, by using in situ-produced [(Me)2-(DABCO)]2+ (DABCO = 1,4-diazabicyclo[2.2.2]octane; Me = methyl) cations as structure-directing agents, we successfully constructed a non-perovskite copper iodobismuthate hybrid, namely [(Me)2-(DABCO)]2Cu2Bi2I12 (1), which features discrete [Cu2Bi2I12]4− anionic moieties formed by the building units of [CuI4] tetrahedra and [BiI6] octahedra. UV-Vis diffuse reflectance analyses showed that compound 1 possesses semiconductive behaviors with a narrow optical bandgap of 1.80 eV. More importantly, it exhibits excellent photoelectric switching abilities, and its photocurrent density (2.30 μA cm−2) far exceeds those of some high-performance halide-based counterparts. Different from many heterometallic analogues, noteworthily, it also has dispersive band structure and strong electronic coupling near the Fermi level, resulting in a material with small effective masses that may be responsible for the good photoelectricity. This study may offer new guidance for the design and synthesis of eco-friendly heterometallic halides with unique structures and desirable properties.
研究领域:
材料科学
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光电化学
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无机化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Y. Zhang,F.F. Lin,T. Wei,L.Z. Pei
Cu bismuthate nanosheets have been synthesized by a facile hydrothermal process. The structure and morphology of the nanosheets are analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). Electrochemical performance for the determination of tartaric acid using Cu bismuthate nanosheets has also been analyzed by cyclic voltammetric (CV) method. XRD pattern shows that the Cu bismuthate nanosheets are composed of tetragonal CuBi 2 O 4 phase. Electron microscopy observations indicate that the Cu bismuthate nanosheets have the polycrystalline structure with the thickness of about 50 nm and width of 300 nm-2 μm. The morphological and structural evolution of the products have been analyzed by controlling the hydrothermal temperature and reaction time. The Cu bismuthate nanosheets modified glassy carbon electrode (GCE) is used to investigate the electrochemical performance for the detection of tartaric acid in 0.1 M KCl electrolyte. A pair of semi-reversible CV peaks are located at −0.45 V and −0.02 V at the Cu bismuthate nanosheets modified GCE in 2 mM tartaric acid. The calculated detection limit is 1.6 μM at the signal to noise ratio of 3 with tartaric acid concentration of 0.005–2 mM. The nanosheets modified GCE shows good application promising for the electrochemical detection of biological molecules.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Chunting Cui,Chenqian Yang,Shenghua Ma,Hui Wang,Jintao Bai
Bismuthate glasses have garnered increasing attention in the fields of optics, packaging, and electronic pastes due to their remarkable stability and high visible light transmission. Nevertheless, high sealing temperature, high expansion coefficient, and poor wettability remain significant challenges in their application. Herein, we report a carefully designed approach that begins with bismuthate glasses of well-defined composition and coats them with various carbon materials to form different C@aminated glass composites by hydrothermal synthesis . This work investigates the effects of different carbon materials on the glass structure and properties, such as melting temperature, crystallinity, wettability, and expansion coefficient, and establishes the redox reaction mechanism involved in glass crystallization formation. Graphene oxide , with its different number of functional distributions and oxygen content, exhibits the largest decrease in softening point and softening-to-melting point temperature difference, the highest increase in wettability, and the greatest reduction in expansion coefficient compared to other carbon materials. In addition, different carbon materials promote a greater variety and strength of crystallization. GO@glass exhibits the most moderate reactivity and generates a significant amount of crystallization at the interface when co-sintered with Si substrates, indicating that the inclusion of crystalline phases can improve the bond strength of the glass. This work provides new insights into designing high-performance bismuthate glasses and promoting their applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2016
·
IF 3.014
L.Z. Pei,T. Wei,N. Lin,C.G. Fan,Zao Yang
Aluminium bismuthate nanorods had been synthesized by a facile hydrothemral method. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations showed that the lengh and diameter were 2–10 μm and 50–200 nm, respectively. X-ray diffraction (XRD) and high-resolution TEM (HRTEM) showed that the nanorods were composed of single crystalline orthorhombic Al 4 Bi 2 O 9 phase. The aluminium bismuthate nanorods could be explained by the nucleation and crystalline growth process based on the products obtained from different hydrothermal conditions. Aluminium bismuthate nanorods modified glassy carbon electrode (GCE) was fabricated for the electrochemical detection of tartaric acid (TA) in neutral solution. A pair of semi-reversible redox peaks located at −0.08 V and −0.53 V, respectively were observed. The current intensity of the cyclic voltammogram (CV) peak increased linearly obviously with increasing the scan rate and TA concentration. The detection limit and linear range were 0.64 μM and 0.001–2 mM, respectively with the correlation coefficient of 0.995. The aluminium bismuthate nanorods modified GCE had good reproducibility and stability for the detection of TA.
研究领域:
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
Materials Advances
·
2023
·Vol. 4
·期 13
·2839-2852
·
IF 5
Yuan Gao,Mengxi Zhong,Jianpeng Chen,Shouqi Wang,Binyi Zhang,Qingzhuo Li,Wei Liu,Jiu-Tao Gao,Cheng-Xin Li,Chang-Jiu Li
Low-temperature solid oxide fuel cells (LT-SOFCs), which can operate at 600 °C or lower, have recently emerged as a promising technology for widespread applications because of their low cost and high stabilities. Novel electrolyte materials with excellent ionic conductivities and stabilities are increasingly in demand for application in LT-SOFCs. Herein, a dysprosium and zirconium co-doped face-centered cubic phase-stabilized bismuth oxide (DZSB) electrolyte has been synthesized using the reverse co-precipitation method. Dysprosium and zirconium are selected to co-dope bismuth oxide because of their large radii and high polarizabilities, which can enhance conductivity stabilities. Dysprosium and zirconium can uniformly replace Bi sites and single-cubic phase DZSB powders of ∼150nm can be synthesized at 700 °C. High relative densities of sintered DZSB pellets (>95%) are obtained via calculations and scanning electron microscopy. D15Z5SB, which contains 15 mol% dysprosium and 5 mol% zirconium, presents the highest ionic conductivity of 0.037 S cm−1 at 500 °C. The activation energy of the ionic conductivity of D2Z5SB shows a single value of 1.23 eV at high- and low-temperature regions. D20Z5SB and D25Z5SB show excellent stabilities for 450 h at 500 °C, with conductivities of 0.007 and 0.0026 S cm−1, respectively.
研究领域:
材料科学
·
电化学
·
能源材料
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Yang Liu,Fenxian Cun,Dongqi Tian,Peng Zhou,Yue Yuan,Zhaokun Xiong,Chuanshu He,Ye Du,Zhicheng Pan,Bo Lai
Sodium bismuthate dihydrate (NaBiO 3 .2 H 2 O, NBH) nanosheets were successfully prepared in this study using the persulfate oil bath oxidation method. Benefited from the unique layered structure of NBH, the Fe(III) as a variable valence metal ion was explored for enhancing NBH activation of peroxymonosulfate (PMS) to degrade levofloxacin (LVF) in the visible-light catalytic system. Based on results of the reactive oxygen species (ROS) quenching experiments and electron paramagnetic resonance (EPR) analysis, singlet oxygen ( 1 O 2 ) and superoxide radical (O 2 ·- ) were identified as the main ROS. The morphology, chemical structure, and optical properties of NBH were analyzed using various characterization methods. It was confirmed that Fe(III) embedded in the NBH via the ion exchange with Na, resulting in lattice oxygen vacancies on the surface of the NBH, after the formation of oxygen defect sites, reacts with PMS in the solution to produce active oxygen species with oxidizing efficiency. This study expands the technological application of NBH in the catalytic oxidation of variable valence metals, which are essential for the removal of fluoroquinolone antibiotics.
研究领域:
环境科学
·
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Current Nanoscience
·
2020
·Vol. 16
·期 5
·805-815
·
IF 1.836
Qiu Fanglv,Wang Zi,Chen Hongjun,Ma Yue,Wu Hang,Yan Lu,Pei Lizhai,Fan Chuangang
Background: Removal of the organic pollutants using the photo-catalysts by the photocatalytic treatment process under natural sunlight irradiation has attracted great attention owing to the complete destruction of the organic pollutants. The La bismuthate nanorods possess good photocatalytic
performance for the removal of the methylene orange (MO) under the sunlight irradiation. Objective: The aim is to synthesize La bismuthate nanorods by hydrothermal method and research the photocatalytic performance of the La bismuthate nanorods for MO degradation under sunlight irradiation.
Methods: La bismuthate nanorods have been synthesized by a simple sodium dodecyl benzene sulfonate (SDBS)-assisted hydrothermal method using sodium bismuthate and La acetate as the starting materials. The obtained La bismuthate products were investigated by X-ray diffraction (XRD), scanning
electron microscopy (SEM), transmission electron microscopy and solid UV-vis diffuse reflectance spectrum. Results: With different SDBS concentration, hydrothermal temperature and reaction time, different morphologies of the La bismuthate products were obtained. XRD analysis shows that
the La bismuthate nanorods obtained from 180°C for 24 h with 5wt.% SDBS are composed of orthorhombic La1.08Bi0.92O3.03 phase. Electron microscopy observations show that the La bismuthate nanorods with flat tips have the length of longer than 10 μm and diameter of about 20-100 nm, respectively.
The morphology and structure of the products are closely related to the SDBS concentration, hydrothermal temperature and reaction time. Solid UV-vis diffuse reflectance spectrum shows that the band gap of the La bismuthate nanorods is 2.37 eV. The La bismuthate nanorods show good photocatalytic
performance for the degradation of MO under the sunlight irradiation. MO solution with the concentration of 10 mg.L-1 can be totally removed by 10 mg La bismuthate nanorods in 10 mL MO aqueous solution under sunlight irradiation for 6 h. Conclusion: The photocatalytic performance for
the removal of MO is dependent on the sunlight irradiation time and dosage of the La bismuthate nanorods. The La bismuthate nanorods exhibit great potential for the removal of organic pollutants.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Mao-Ting Ding,Xian-Zhang Ling,F.F. Lin,L. Pei,C.G. Fan
A facile hydrothermal process was used for the synthesis of barium bismuthate nanoribbons. The nanoribbons were applied as the sensing materials for sensitive detection of Pb(II). The micromorphology and structure of the prepared products were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The suspension with barium bismuthate nanoribbons was cast on the surface of a glassy carbon electrode (GCE). The barium bismuthate nanoribbons modified GCE was used for the detection of Pb(II) using square wave anodic stripping voltammetry (SWASV) technique. The results show that the fabricated GCE exhibited a linear range of 0.001-2 mM with the limit of detection (LOD) of 0.13 μM. The barium bismuthate nanoribbons modified GCE has a promising potential in practical application for the detection of real samples with water and soil.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
International Journal of Materials Research
·
2018
·Vol. 109
·期 11
·1035-1042
·
IF 0.748
Yong Zhang,Feifei Lin,Tian Wei,Fanglv Qiu,Yue Ma,Lizhai Pei
Barium bismuthate microrods were synthesized by a simple ethylenediamine-assisted hydrothermal route using barium acetate and sodium bismuthate as the source materials. The X-ray diffraction pattern shows that the barium bismuthate microrods are composed of monoclinic BaBiO 2.5 phase. Scanning electron microscopy images show that the length and diameter of the barium bismuthate microrods are about 10–20 μm and 500 nm–1.5 μm, respectively. The formation and growth of the barium bismuthate microrods are closely related to the temperature, processing duration and ethylenediamine concentration. The solid UV–vis diffuse reflectance spectrum shows that the band gap of the barium bismuthate microrods is 1.42 eV which has strong absorption ability in the visible light region. The phtocatalytic activity of the barium bismuthate microrods has been evaluated by the photocatalytic removal of gentian violet under natural solar light irradiation in aqueous solution. Gentian violet with a concentration of 10 mg · L −1 can be totally removed by 10 mg barium bismuthate microrods in 10 mL aqueous solution.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）