Vapor phase transport synthesis of high-silica zincosilicate molecular sieve VPI-8

2005 ◽  
pp. 153-160
Author(s):  
J.-P. Li ◽  
C.-F. Xue ◽  
X.-D. Zhang ◽  
K.-C. Xie ◽  
J.-X. Dong
Keyword(s):  
Vapor Phase ◽  
Molecular Sieve ◽  
Vapor Phase Transport ◽  
High Silica ◽  
Phase Transport

Progress in Synthesis of Micro- and Mesoporous Composite Molecular Sieve

2011 ◽  
Vol 396-398 ◽  
pp. 1151-1156
Author(s):  
Wen Yuan Wu ◽  
Chun Wei Shi ◽  
Xue Bian
Keyword(s):  
Hydrothermal Synthesis ◽  
Microwave Radiation ◽  
Vapor Phase ◽  
Molecular Sieves ◽  
Molecular Sieve ◽  
Vapor Phase Transport ◽  
Mesoporous Composite ◽  
Composite Molecular Sieve ◽  
Potential Applications ◽  
Phase Transport

Micro- and mesoporous composite molecular sieves enable to achieve grades distribution of pore sizes and appropriate collocation of acidity,which have potential applications in catalysis and adsorption of large molecules.This review focus on some of the most recent results during the last decades.The techniques applied to synthesize different micro-mesoporous composite molecular sieves includes single template, dual template, crystallization of mesoporous walls, alkaline desilication, vapor-phase transport synthesis,and microwave radiation hydrothermal synthesis.

Fast Synthesis of High-Silica ZSM-5 Zeolite via a Simple Vapor-Phase Transport Method

2013 ◽  
Vol 634-638 ◽  
pp. 2184-2188
Author(s):  
Qing Yang Meng ◽  
Jin Yang Chen ◽  
Xiao Wei Cheng ◽  
Ying Cai Long
Keyword(s):  
Vapor Phase ◽  
Vapor Phase Transport ◽  
Factors Affecting ◽  
Precipitated Silica ◽  
Silica Source ◽  
Vapor Phase Transport Method ◽  
Ft Ir ◽  
High Silica ◽  
Phase Transport ◽  
Fast Synthesis

Fast synthesis of high-silica ZSM-5 zeolite through vapor-phase transport (VPT) method was reported in this paper. The synthesized samples were characterized with XRD, FT-IR, XRF, SEM and N2 Absorption. Factors affecting the synthesis of ZSM-5 zeolite such as the alkalinity, the crystallization temperature and time, the quantity of seeds were investigated. With precipitated silica and fumed silica as silica source respectively, the appropriate ratio was studied as follows: (0.04-0.05) Na2O: 1.0SiO2: 15H2O: (0-0.0046)Al2O3: 0.01Seed, the reaction was carried out at 393-413K for 4-24h.

Complex features of the photoluminescence from ZnO nanorods grown by vapor-phase transport method

2021 ◽  
Vol 128 ◽  
pp. 105783
Author(s):  
R.R. Jalolov ◽  
Sh.Z. Urolov ◽  
Z.Sh. Shaymardanov ◽  
S.S. Kurbanov ◽  
B.N. Rustamova
Keyword(s):  
Vapor Phase ◽  
Zno Nanorods ◽  
Vapor Phase Transport ◽  
Vapor Phase Transport Method ◽  
Complex Features ◽  
Phase Transport ◽  
Transport Method

scholarly journals ZnO Nanorod/Graphene Hybrid-Structures Formed on Cu Sheet by Self-Catalyzed Vapor-Phase Transport Synthesis

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 450
Author(s):  
Hak Dong Cho ◽  
Deuk Young Kim ◽  
Jong-Kwon Lee
Keyword(s):  
Vapor Phase ◽  
Zno Nanorods ◽  
Light Illumination ◽  
Neutral Donor ◽  
Vapor Phase Transport ◽  
Uv Emission ◽  
Current Voltage ◽  
Device Applications ◽  
Graphene Glass ◽  
Phase Transport

High crystalline ZnO nanorods (NRs) on Zn pre-deposited graphene/Cu sheet without graphene transfer process have been fabricated by self-catalyzed vapor-phase transport synthesis. Here, the pre-deposited Zn metal on graphene not only serves as a seed to grow the ZnO NRs, but also passivates the graphene underneath. The temperature-dependent photoluminescence spectra of the fabricated ZnO NRs reveal a dominant peak of 3.88 eV at 10 K associated with the neutral-donor bound exciton, while the redshifted peak by bandgap shrinkage with temperature and electron-lattice interactions leads a strong emission at 382 nm at room temperature. The optical absorption of the ZnO NRs/graphene hetero-nanostructure at this ultraviolet (UV) emission is then theoretically analyzed to quantify the absorption amount depending on the ZnO NR distribution. By simply covering the ZnO NR/graphene/Cu structure with the graphene/glass as a top electrode, it is observed that the current-voltage characteristic of the ZnO NR/graphene hetero-nanojunction device exhibits a photocurrent of 1.03 mA at 3 V under a light illumination of 100 μW/cm2. In particular, the suggested graphene/ZnO NRs/graphene hybrid-nanostructure-based devices reveal comparable photocurrents at a bidirectional bias, which can be a promising platform to integrate 1D and 2D nanomaterials without complex patterning process for UV device applications.

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