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Li J, Liang Q, Zhang B, Chen H, Tian X, Fan M, Guo Y, Bai N, Zou X, Li GD. Olivine-type cadmium germanate: a new sensing semiconductor for the detection of formaldehyde at the ppb level. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00772f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, for the first time, olivine-structured Cd2GeO4 was identified as an excellent formaldehyde sensing material, with a low detection limit of 60 ppb.
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Affiliation(s)
- Jiayu Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Qihua Liang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Bo Zhang
- International Center of Future Science, Jilin University, Changchun 130012, P. R. China
| | - Hui Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Xinhua Tian
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Meihong Fan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Yunjia Guo
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ni Bai
- School of Mechanical and Metallurgical Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, P. R. China
| | - Xiaoxin Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Guo-Dong Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
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Zhang N, Yang B, He Y, He Y, Liu X, Liu M, Song G, Chen G, Pan A, Liang S, Ma R, Venkatesh S, Roy VAL. Serpentine Ni 3 Ge 2 O 5 (OH) 4 Nanosheets with Tailored Layers and Size for Efficient Oxygen Evolution Reactions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1803015. [PMID: 30328265 DOI: 10.1002/smll.201803015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/16/2018] [Indexed: 05/26/2023]
Abstract
Layered serpentine Ni3 Ge2 O5 (OH)4 is compositionally active and structurally favorable for adsorption and diffusion of reactants in oxygen evolution reactions (OER). However, one of the major problems for these materials is limited active sites and low efficiency for OER. In this regard, a new catalyst consisting of layered serpentine Ni3 Ge2 O5 (OH)4 nanosheets is introduced via a controlled one-step synthetic process where the morphology, size, and layers are well tailored. The theoretical calculations indicate that decreased layers and increased exposure of (100) facets in serpentine Ni3 Ge2 O5 (OH)4 lead to much lower Gibbs free energy in adsorption of reactive intermediates. Experimentally, it is found that the reduction in number of layers with minimized particle size exhibits plenty of highly surface-active sites of (100) facets and demonstrates a much enhanced performance in OER than the corresponding multilayered nanosheets. Such a strategy of tailoring active sites of serpentine Ni3 Ge2 O5 (OH)4 nanosheets offers an effective method to design highly efficient electrocatalysts.
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Affiliation(s)
- Ning Zhang
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Baopeng Yang
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Yuanqing He
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Yulu He
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Xiaohe Liu
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Min Liu
- School of Physical Science and Electronics, Central South University, Changsha, Hunan, 410083, China
| | - Guoyong Song
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083, China
| | - Gen Chen
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Anqiang Pan
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Shuquan Liang
- School of Materials Science and Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Renzhi Ma
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Shishir Venkatesh
- Department of Materials Science & Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, 999077, China
| | - Vellaisamy A L Roy
- Department of Materials Science & Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, 999077, China
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A Facile Method to In-Situ Synthesize Porous Ni₂GeO₄ Nano-Sheets on Nickel Foam as Advanced Anode Electrodes for Li-Ion Batteries. NANOMATERIALS 2016; 6:nano6110218. [PMID: 28335346 PMCID: PMC5245747 DOI: 10.3390/nano6110218] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/25/2016] [Accepted: 10/28/2016] [Indexed: 11/16/2022]
Abstract
A strategy for growth of porous Ni₂GeO₄ nanosheets on conductive nickel (Ni) foam with robust adhesion as a high-performance electrode for Li-ion batteries is proposed and realized, through a facile two-step method. It involves the low temperature hydro-thermal synthesis of bimetallic (Ni, Ge) hydroxide nanosheets precursor on Ni foam substrates and subsequent thermal transformation to porous Ni₂GeO₄ nanosheets. The as-prepared Ni₂GeO₄ nanosheets possess many interparticle mesopores with a size range from 5 to 15 nm. The hierarchical structure of porous Ni₂GeO₄ nanosheets supported by Ni foam promises fast electron and ion transport, large electroactive surface area, and excellent structural stability. The efficacy of the specially designed structure is demonstrated by the superior electrochemical performance of the generated Ni₂GeO₄ nanosheets including a high capacity of 1.8 mA·h·cm-2 at a current density of 50 μA·cm-2, good cycle stability, and high power capability at room temperature. Because of simple conditions, this fabrication strategy may be easily extended to other mixed metal oxides (MxGeOy).
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