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RISS 인기검색어
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- 저자 : Haoshan Hao (검색결과 3 건)
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Oxygen removal from nitrogen using YBaCo_2O_(5+δ) adsorbent
Haoshan Hao,Bojun Chen,Limin Zhao,Xing Hu 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.2
The oxygen intake/release behavior of YBaCo_2O_(5+δ) and its application as a medium-temperature (100-600℃) adsorbent to oxygen removal in nitrogen purification was investigated. The oxygen content in YBaCo_2O_(5+δ)was varied between 5.46 and 5.0 with the change of the temperature and oxygen partial pressure. This oxygen nonstoichiometry showed good reversibility and the crystal structure of YBaCo_2O_(5+δ) remained stable in the oxygen intake/release process. Results of nitrogen purification experiment show that YBaCo_2O_(5+δ) material is a promising candidate to remove trace oxygen from nitrogen. After being deoxidized at 600 oC in nitrogen, 1 kg YBaCo_2O_(5+δ) adsorbent can purify 310 L nitrogen of 98.1% to high-purity nitrogen of over 99.9999% in one cycle.
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Facile Synthesis of CdTe Nanorods from the Growth of Te Nanorods
Weiwei Xu,Jinzhong Niu,Guimin Tian,Xinghui Wu,Yongguang Cheng,Xiaoyang Hu,Haoshan Hao 대한화학회 2017 대한화학회지 Vol.61 No.4
One-dimensional CdTe nanorods (NRs) are obtained by the reaction of various Cd precursors with single crystalline Te nanorod templates, which are pre-synthesized from Te precursors by a simple and reproducible solvothermal method. Throughout the process, the diffraction intensity of different crystal facets of single crystalline Te NRs varied with reaction times. Finally, by alloying Cd ions along the axial direction of Te NRs, polycrystalline cubic phase CdTe NRs with diameters of 80–150 nm and length up to 1.2–2.4 μm are obtained. The nucleation and growth processes of Te and CdTe NRs are discussed in details, and their properties are characterized by XRD, SEM, TEM, Raman scattering, and UV-vis absorption spectra. It was found that the key elements of synthesizing CdTe NRs such as reaction temperatures and Cd sources will strongly influence the final shape of CdTe NRs.
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Facile Synthesis of CdTe Nanorods from the Growth of Te Nanorods
Xu, Weiwei,Niu, Jinzhong,Zheng, Shuang,Tian, Guimin,Wu, Xinghui,Cheng, Yongguang,Hu, Xiaoyang,Liu, Shuaishuai,Hao, Haoshan Korean Chemical Society 2017 대한화학회지 Vol.61 No.4
One-dimensional CdTe nanorods (NRs) are obtained by the reaction of various Cd precursors with single crystalline Te nanorod templates, which are pre-synthesized from Te precursors by a simple and reproducible solvothermal method. Throughout the process, the diffraction intensity of different crystal facets of single crystalline Te NRs varied with reaction times. Finally, by alloying Cd ions along the axial direction of Te NRs, polycrystalline cubic phase CdTe NRs with diameters of 80-150 nm and length up to $1.2-2.4{\mu}m$ are obtained. The nucleation and growth processes of Te and CdTe NRs are discussed in details, and their properties are characterized by XRD, SEM, TEM, Raman scattering, and UV-vis absorption spectra. It was found that the key elements of synthesizing CdTe NRs such as reaction temperatures and Cd sources will strongly influence the final shape of CdTe NRs.
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