MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 7
·1-11
·
IF 5.479
Shi Erbin,Yu Guangli,Lin Huiming,Liang Cuiyuan,Zhang Tingting,Zhang Feng,Qu Fengyu
The first example of metallic bismuth encapsulated into a mesoporous metal-organic framework of the type MIL-101(Cr) matrix is presented. Bi(III)-impregnated MIL-101(Cr) (Bi(III)/MIL-101(Cr)) was dropped onto a conductive carbon cloth electrode (CCE). Then, bismuth was generated by electrochemical reduction of the Bi(III)/MIL-101(Cr) supported on CCE (Bi/MIL-101(Cr)/CCE). The resulting Bi/MIL-101(Cr)/CCE display impressive performance in terms of peak currents for the ions Cd(II) and Pb(II) when compared to the single-component counterparts. Differential pulse anodic stripping voltammetry (DPASV) enabled sensing of the two ions over linear working range of 0.1 to 30 μg L −1 and 30 to 90 μg L −1 . The parameters are refined before the detection of two metal ions, including the amount of bismuth in MIL-101(Cr), optimum pH (5.0), deposition potential (−1.2 V) and deposition time (600 s). The respective detection limits are 60 and 70 ng L −1 (at S/ N = 3). This is strikingly lower than the guideline values of domestic water given by the WHO which are 3 μg L −1 for Cd(II) and 10 μg L −1 for Pb(II). The Bi/MIL-101(Cr) onto CCE is fairly specific for Cd(II) (at around −0.76 V) and Pb(II) (at around −0.54 V), well reproducible and has excellent recovery in real water analysis.
Schematic illustration of the preparation of a Bi(III)/MIL-101(Cr) metal-organic framework, its deposition on a carbon cloth electrode (CCE), and its application for detection of Cd(II) and Pb(II) by differential pulse adsorptive stripping voltammetry (DPASV).
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE REVIEW AND LETTERS
·
2014
·
IF 0.367
ZHUOYUAN YANG,YUQING MIAO,TIANRUI WANG,MINGSHU XIAO,XIAOCAI LIANG,YANG YANG,WEIWEI LI
In this paper, we first fabricated a nanoPt modified platinum electrode. Then through a simple method, the electrode surface was introduced with a submonolayer of bismuth that acted as an effective promoter. Cyclic voltammetry and other characterizations were employed. The obtained Bi III / nanoPt / Pt electrode exhibited two greatly increased oxidation peaks at negative and positive potential areas, respectively. The signals were far larger than that of platinum electrode because of the large true surface area of nanoparticles and the catalysis of bismuth adsorbed on platinum. In the presence of bismuth, the platinum active sites could combine with more OH - from bismuth hydroxyl to form a new active site for the oxidation of glucose. The prepared Bi III / nanoPt / Pt electrode given high sensitivity and excellent linearship to glucose detection and showed the potential application in the areas of electrocatalysis or electroanalysis.
研究领域:
电化学
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2022
·
IF 3.118
Huimin Huang,Yuandong Wu,Shuangsheng Cheng,Shaoguo Wen,Yi Qu,Thomas Doert,Dajiang Mei
A new bismuth(III) complex [(1,10-phen)Bi(C 2 O 4 ) 1.5 ], 1,10-phen = 1,10-phenanthroline, was synthesized with oxalate and phen ligands without by-products. The title complex was characterized by single crystal X-ray diffraction, FT-infrared Spectrum, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). 2D bismuth - oxalate - bridged layers are formed by oxalate ligands. Phen ligands are embedded in it which further stabilize the structure. The luminescence properties show that [(1,10-phen)Bi(C 2 O 4 ) 1.5 ] can emit blue-green fluorescence, and π - π stacking and ligand-to-metal-charge transfer (LMCT) are predominant in it, which may have potential applications in the fields of crystal luminescent materials.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Min Wang,Chongyue Jin,Zhilin Li,Meiyan You,Yu Zhang,Tong Zhu
To further enhance the photocatalytic performance of graphitic carbon nitride (g-C 3 N 4 ), we rationally combined two strategies (foreign metal doping and ultrathin nanosheet construction) to synthesize bismuth (III) (Bi 3+ ) doped ultrathin g-C 3 N 4 nanosheets (Bi-CNNS) via one-step thermal polymerization method using melamine as the raw material, bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) as the dopant source, and nitric acid (HNO 3 ) and acetic acid (AC) as soft templates for the ultrathin nanosheets construction. The Bi-CNNS catalysts exhibited an excellent photocatalytic performance in tetracycline (TC) degradation. The TC removal efficiency reached to be 94.1% in 30 min under visible-light irradiation over 0.03Bi-CNNS, which is 6.03 times higher than that of pure g-C 3 N 4 (CN). The higher specific surface area, narrower bandgap, the improved photoexcited electron-hole pair transfer and separation efficiency, and prolonged carrier lifetimes in the Bi 3+ -doped ultrathin g-C 3 N 4 nanosheets led to a significantly enhanced photocatalytic performance. The main radical species responsible for the degradation of tetracycline over 0.03Bi-CNNS were O 2 − and OH. Moreover, the possible photodegradation intermediate products of TC were detected by gas chromatography–mass spectroscopy (GC–MS), and a possible pathway was proposed.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYHEDRON
·
2022
·
IF 2.975
Si-Hui Tan,Zhao-Hui Chen,Huan Luo,Ting Liu,Guo-Qing Zhong
Two novel bismuth(III) complexes of the formulae (2-HMI) 4 [Bi 2 Cl 10 ] ( 1 ) and {(Hphen)[BiCl 4 ]} n ( 2 ) (2-MI = 2-methylimidazole, Hphen = 1,10-phenanthroline) were synthesized. The complexes were characterized by elemental analyses, X-ray diffraction, Fourier transform infrared spectra and thermogravimetry analysis. The X-ray crystallographic investigation reveals that 1 is ionic compound built of 2-methylimidazolium cations and binuclear metalate anions, [Bi 2 Cl 10 ] 4– . 2 is a coordination polymer, and its asymmetric structural units are connected by one Bi 3+ ion, four Cl – ions and one disordered and protonized Hphen + cation. In addition, the photocatalytic activities of 1 and 2 towards the degradations of Rhodamine B (RhB) and methylene blue (MB) were explored, and the mechanism of the photocatalytic degradation was also discussed. The results show that 1 and 2 are good candidates for photocatalytic degradation of RhB and 2 is also a good candidate for photocatalytic degradation of MB.
研究领域:
无机化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2017
·Vol. 643
·期 10
·669-674
·
IF 1.144
Fan Ye,Zhi-Xian Wei,Jiang-Feng Song,Xu-Hong Wu,Pan Yue
{[Bi(BTC)(H 2 O) 2 ] · H 2 O} n (H 3 BTC = 1,3,5-benzenetricarboxylic acid) was synthesized by an eco-friendly hydrothermal method and characterized by single-crystal X-ray diffraction, IR and UV/Vis spectroscopy, photoluminescence (PL), and thermogravimetric analyses. The complex featured a 3D metal-organic framework with Bi 2 secondary building units. In the complex, the central Bi 3+ is nine-coordinate, three central Bi atoms and three BTC 3– anions are interconnected into a ring with the dimension of 7.95 × 9.89 Å 2 . Moreover, the complex is decomposed at over 388 °C, showing its highly thermal stability. Further, the complex exhibits photocatalytic activity for the degradation of methyl orange (MO) solution under UV light irradiation, and its structure can keep consistent with the original one after 9 h photocatalytic reaction, indicating that it is also very stable under UV light. Therefore, it could be anticipated the novel coordination complex will be a stable ultraviolet light catalyst.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）