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Jing Yin

Bio: Jing Yin is an academic researcher from Tianjin University of Technology. The author has contributed to research in topics: Phosphor & Nanorod. The author has an hindex of 13, co-authored 17 publications receiving 866 citations.

Papers
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Journal ArticleDOI
TL;DR: Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) as mentioned in this paper.
Abstract: Aligned zinc oxide nanorods were synthesized directly via a two-step solution approach on an Al2O3 tube, and were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The zinc oxide nanorods prepared were uniform with diameters of 10–30 nm and lengths about 1.4 μm. The response Sr (= Ra/Rg) of the aligned zinc oxide nanorod sensor reached 18.29 and 10.41 to 100 ppm ethanol and hydrogen, respectively, which was a two-fold increase compared with that reported in literature, demonstrating the potential for developing stable and sensitive gas sensors.

317 citations

Journal ArticleDOI
TL;DR: In this paper, a facile precipitation method was used to synthesize zinc oxide (ZnO) nanosheets at room temperature without any template, surfactant or organic solvent, which demonstrated an effective strategy for surface defect engineering to improve the metal oxide semiconductor gas sensing performance.
Abstract: Zinc oxide (ZnO) nanosheets were directly synthesized using a facile precipitation method at room temperature without any template, surfactant or organic solvent. X-ray diffraction (XRD) confirms that the ZnO nanosheets belong to hexagonal wurtzite structure. Scanning electron microscope (SEM) and transmission electron microscope (TEM) reveals the morphology and structure of the ZnO nanosheets, showing the predominantly exposed non-polar {100} planes and an average thickness of about 20 nm. In order to regulate and control the intrinsic surface defect contents, improving the thermal stability, the samples were calcined at different temperatures (200 °C, 400 °C and 600 °C respectively), showing that the sheet-like structures can be maintained below 400 °C. Photoluminescence (PL) analysis shows that abundant intrinsic surface defects exist on the ZnO crystal surfaces. Gas sensors based on ZnO nanosheets calcinated at 200 °C exhibits high response, fast response-recovery and good selectivity to 5–1000 ppm acetone vapor at 300 °C. The response value to acetone vapor is correlated with the surface defect contents, namely, the more defects, the higher sensor response. Thus, it is considered that the improved acetone sensing property, especially enhanced response value, is mainly originated from the increased intrinsic defect content on the surface of ZnO nanosheets. Developed precipitation method is facile for synthesis of ZnO nanosheets, which demonstrate an effective strategy for surface defect engineering to improve the metal oxide semiconductor gas sensing performance.

125 citations

Journal ArticleDOI
Ya-Bin Zhang1, Jing Yin1, Li Ling1, Le-Xi Zhang1, Li-Jian Bie1 
TL;DR: In this article, a facile approach for synthesis of flower-like p-CuO/n-ZnO heterojunction nanorods was reported, which confirmed that the heterogeneous nanostructure was highly crystalline.
Abstract: A facile approach for synthesis of flower-like p-CuO/n-ZnO heterojunction nanorods was reported. The CuO/ZnO nanorods were prepared by co-precipitation of CuO nanoparticles on the hydrothermally grown ZnO nanorods. The obtained samples were characterized by X-ray diffraction and transmission electron microscopy, which confirms that the heterogeneous nanostructure of the CuO/ZnO nanorods was highly crystalline. The ethanol gas-sensing properties of CuO/ZnO nanorods were evaluated with different ethanol vapor concentrations at the working temperature of 300 °C. The response of 0.25:1 CuO/ZnO nanorod sensor to 100 ppm ethanol was 98.8, which is 2.5 times that of ZnO only sample, with a response and recovery time of 7 s and 9 s, respectively. Good selectivity and long-term stability can also be achieved and the response of low concentration as 1 ppm ethanol can reach the value of 9.68 using the flower-like p-CuO/n-ZnO heterojunction nanorods as sensing material. The enhanced ethanol response is mainly attributed to a wider depletion layer on the CuO/ZnO surface resulted from the formation of p–n heterojunctions between p-CuO nanoparticles and n-type ZnO nanorods.

114 citations

Journal ArticleDOI
TL;DR: In this paper, the gas sensing properties of ultrathin SnO2 nanosheets with dominant high-energy {001} facets were studied for the detection of formaldehyde (HCHO).
Abstract: Semiconducting metal oxides (SMO) have been investigated as important gas sensing materials for detecting various inflammable and toxic gases; however most of them are suffered from low response and high operation temperature. Ultrathin SnO2 nanosheets with dominant high-energy {001} facets were synthesized by a facile hydrothermal method, and the gas sensing properties to formaldehyde (HCHO) were systemically studied. The structure, morphology, specific surface area, band gap and chemical state of the ultrathin SnO2 nanosheets were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), N2 adsorption–desorption, UV–Vis diffuse reflectance spectrum and X-ray photoelectron spectroscopy (XPS), respectively. Sensors based on SnO2 nanosheets show outstanding gas sensing properties to HCHO vapor at the optimum operating temperature (OOT) of 200 °C. The nanosheet sensor exhibit a response of 207.7 to 200 ppm HCHO at 200 °C with the response-recovery time of 30 s and 57 s, respectively. Notably, as low as 1 ppm HCHO can be readily detected with a high response value (Sr = 6.1). The excellent HCHO sensing performance is mainly originated from the structural sensitization of large specific surface area, characteristically small thickness and dominant high-energy {001} facets.

93 citations

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TL;DR: In this article, uniform single-crystalline nanopolyhedra, nanorods and nanocubes of cubic CeO2 were selectively prepared by a hydrothermal method at different temperatures and NaOH concentrations, using Ce(NO3)3 as the cerium source.
Abstract: Recently, the influence of polar facets on the gas sensing performance of metal oxides has drawn much attention, yet the facet-dependent gas sensing properties of rare earth oxides have not been reported so far. In this work, taking CeO2 as an example, uniform single-crystalline nanopolyhedra, nanorods and nanocubes of cubic CeO2 were selectively prepared by a hydrothermal method at different temperatures and NaOH concentrations, using Ce(NO3)3 as the cerium source. According to X-ray powder diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) analysis, these CeO2 nanocrystals possess different exposed crystal planes: {111} and {100} for nanopolyhedra, {110} and {100} for nanorods, and {100} for nanocubes. Abundant defects were confirmed on the surface of three CeO2 nanocrystals by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and photoluminescence (PL). Notably, gas sensors based on these three CeO2 nanocrystals exhibited distinct response values towards dimethylamine vapor in the following order: nanocubes > nanorods > nanopolyhedra, while excluding the effects of characteristic dimension and specific surface area. The response order of CeO2 nanocrystals is primarily ascribed to the different content of surface defects and {100} polar facets instead of {111} and {110} nonpolar facets.

71 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, the authors extensively review recent developments in this field, focusing the attention on the detection of some common VOCs, including acetone (C3H6O), acetylene (C2H2), benzene (C6H6), cyclohexene (Cyclohexenene) and 2-propanol (C7H8O), by means of conductometric solid state sensors based on nanostructured semiconducting metal oxides.

777 citations

Journal ArticleDOI
TL;DR: This paper presents a meta-analyses of the chiral stationary phase transition of Na6(CO3)(SO4)/ Na2SO4 using a high-performance liquid chromatography apparatus for the determination of Na2CO3(SO4).
Abstract: Xin Zhou,†,‡ Songyi Lee,† Zhaochao Xu,* and Juyoung Yoon*,† †Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 120-750, Republic of Korea ‡Research Center for Chemical Biology, Department of Chemistry, Yanbian University, Yanjii 133002, People’s Republic of China Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Shahekou, Dalian, Liaoning, People’s Republic of China

631 citations

Journal ArticleDOI
TL;DR: In this article, the authors present an up-to-date review of metal oxide materials research for gas sensors application, due to the great research effort in the field it could not cover all the interesting works reported, the ones that, according to the authors, are going to contribute to this field's further development were selected and described.

590 citations

Journal ArticleDOI
TL;DR: In this article, a review of the most recent advancements in utilization of various 2D nanomaterials for gas sensing is provided, where the focus is on the sensing performances provided by devices integrating 2D Nanostructures.
Abstract: Two-dimensional (2D) nanostructures are highly attractive for fabricating nanodevices due to their high surface-to-volume ratio and good compatibility with device design. In recent years 2D nanostructures of various materials including metal oxides, graphene, metal dichalcogenides, phosphorene, BN and MXenes, have demonstrated significant potential for gas sensors. This review aims to provide the most recent advancements in utilization of various 2D nanomaterials for gas sensing. The common methods for the preparation of 2D nanostructures are briefly summarized first. The focus is then placed on the sensing performances provided by devices integrating 2D nanostructures. Strategies for optimizing the sensing features are also discussed. By combining both the experimental results and the theoretical studies available, structure-properties correlations are discussed. The conclusion gives some perspectives on the open challenges and future prospects for engineering advanced 2D nanostructures for high-performance gas sensors devices.

560 citations

Journal ArticleDOI
TL;DR: A review of the state of the art of gas sensors based on graphene and metal oxide hybrid nanostructures for detection of various common toxic gases is presented in this paper, where the authors have explored the hybrid architectures formed by blending of nanoparticles of metal-oxides with graphene or its derivatives.
Abstract: Sensing of gas molecules is critical to environmental monitoring, control of chemical processes, agricultural, and medical applications In particular, the detection of industrial toxic gases such as CO, NO x , and NH 3 is very important for many industries Metal oxides have been widely studied for the sensitivity of their properties to gases even though they do have some limitations Recently, graphene has been considered as a promising material for gas sensing since its electronic properties are strongly affected by the adsorption of foreign molecules Intrinsic graphene has high sensitivity at low gas concentrations; but the sensor selectivity is poor which limits its use in many practical applications Hence, hybrid architectures formed by blending of nanoparticles of metal–oxides with graphene or its derivatives have been explored by several researchers which showed improved gas sensing ability, especially the sensitivity and selectivity at room temperature Here we review the state of the art of gas sensors based on graphene and metal oxide hybrid nanostructures for detection of various common toxic gases

528 citations