The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Yingying Lv - One of the best experts on this subject based on the ideXlab platform.
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synthesis of graphene nanosheet powder with layer number control via a Soluble Salt assisted route
RSC Advances, 2014Co-Authors: Yingying Lv, Leshu Yu, Chengming Jiang, Suming ChenAbstract:The principle features in this study lay on the synthesis of graphene nanosheet powders with layer number control from pristine graphite powder via a Soluble Salt-assisted route and on the high thermal stability and good dispersibility of our products in ethanol.
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Application of Soluble Salt-assisted route to synthesis of β-Ga 2 O 3 nanopowders
Applied Physics A, 2013Co-Authors: Yingying Lv, Leshu Yu, Dagui Zheng, Chengming JiangAbstract:In the past β-Ga2O3 nanopowders were usually prepared from gallium-based compounds via wet chemical processes. However, those wet chemical routes would lead not only to high cost, but also to the inevitable contamination of the targeted products from unexpected doping. In this work, the Soluble Salt-assisted route has been applied to prepare β-Ga2O3 nanopowders with a yield of 96.5 % through the direct oxidation of Ga–Na2SO4 mixture at 600 °C followed by water washing. Systematical characterizations including SEM, TEM, XRD, Raman, IR, XPS, BET, UV–Vis diffuse reflectance and PL spectrum were conducted. The as-prepared nanopowders were composed of mesoporous nanoparticles and nanosheets with monoclinic Ga2O3, and had a broad UV and blue emissions band from 350 to 550 nm. Furthermore their optical band gap was 4.68 eV, exhibiting a red shift of 0.22 eV in comparison with pure bulk matrix. The interesting results indicated a wide range of Soluble Salt-assisted route for promising industrial production of β-Ga2O3 nanopowders.
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application of the Soluble Salt assisted route to scalable synthesis of zno nanopowder with repeated photocatalytic activity
Nanotechnology, 2012Co-Authors: Yingying Lv, Leshu Yu, Heyong Huang, Yuying Feng, Dongzhen ChenAbstract:In this paper, the Soluble Salt-assisted route has been extended to the low-cost and scalable preparation of ZnO nanostructures via the simple oxidation of Zn?Na2SO4 mixture followed by washing with water. The as-prepared ZnO nanopowders are of nanoscaled size, hexagonal phase, and pure, without being stained by Na2SO4. Their optical band gap is 3.22?eV, exhibiting a red-shift of 0.15?eV in comparison with pure ZnO bulk, and their optical absorbance is strong in the region of 200?400?nm, suggesting their full utilization of most of the UV light in sunlight. The product shows evident photocatalytic activity in degradation of RhB under solar light irradiation, and then its solar light degradation efficiency is close to that under UV irradiation, indicating that there is a possibility of practical application. More importantly, the obtained ZnO nanoparticles, because of the quick precipitation by themselves in solution with no stirring, could be easily recycled without any accessorial means such as high-speed centrifuge. The low-cost and scalable preparation, high photocatalytic activity, and convenient recycling of this ZnO nanomaterial gives it potential in purifying waste water. Hence the interesting results in this study indicate the wide range of the Soluble Salt-assisted route for the industrial preparation of many other advanced nanomaterials.
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A Soluble Salt-assisted facile synthetic route to semiconducting GaN nanoparticles
CrystEngComm, 2010Co-Authors: Leshu Yu, Yingying Lv, Xiaolan Zhang, Yu Zhao, Yongliang Zhang, Heyong Huang, Yuying FengAbstract:By using the Soluble Salt as the dispersant, a facile synthetic route has been developed to prepare GaN nanoparticle powders on a large scale and in a high yield of 95.8% through the direct nitridation of Ga–Na2SO4 mixture at 700 °C and followed by washing with water. This preparation method is also applicable to some other low-melting-point-metal oxides. The simple preparation procedure and the range of potential applications of the products made this work both scientifically and technologically interesting.
Leshu Yu - One of the best experts on this subject based on the ideXlab platform.
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synthesis of graphene nanosheet powder with layer number control via a Soluble Salt assisted route
RSC Advances, 2014Co-Authors: Yingying Lv, Leshu Yu, Chengming Jiang, Suming ChenAbstract:The principle features in this study lay on the synthesis of graphene nanosheet powders with layer number control from pristine graphite powder via a Soluble Salt-assisted route and on the high thermal stability and good dispersibility of our products in ethanol.
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Application of Soluble Salt-assisted route to synthesis of β-Ga 2 O 3 nanopowders
Applied Physics A, 2013Co-Authors: Yingying Lv, Leshu Yu, Dagui Zheng, Chengming JiangAbstract:In the past β-Ga2O3 nanopowders were usually prepared from gallium-based compounds via wet chemical processes. However, those wet chemical routes would lead not only to high cost, but also to the inevitable contamination of the targeted products from unexpected doping. In this work, the Soluble Salt-assisted route has been applied to prepare β-Ga2O3 nanopowders with a yield of 96.5 % through the direct oxidation of Ga–Na2SO4 mixture at 600 °C followed by water washing. Systematical characterizations including SEM, TEM, XRD, Raman, IR, XPS, BET, UV–Vis diffuse reflectance and PL spectrum were conducted. The as-prepared nanopowders were composed of mesoporous nanoparticles and nanosheets with monoclinic Ga2O3, and had a broad UV and blue emissions band from 350 to 550 nm. Furthermore their optical band gap was 4.68 eV, exhibiting a red shift of 0.22 eV in comparison with pure bulk matrix. The interesting results indicated a wide range of Soluble Salt-assisted route for promising industrial production of β-Ga2O3 nanopowders.
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application of the Soluble Salt assisted route to scalable synthesis of zno nanopowder with repeated photocatalytic activity
Nanotechnology, 2012Co-Authors: Yingying Lv, Leshu Yu, Heyong Huang, Yuying Feng, Dongzhen ChenAbstract:In this paper, the Soluble Salt-assisted route has been extended to the low-cost and scalable preparation of ZnO nanostructures via the simple oxidation of Zn?Na2SO4 mixture followed by washing with water. The as-prepared ZnO nanopowders are of nanoscaled size, hexagonal phase, and pure, without being stained by Na2SO4. Their optical band gap is 3.22?eV, exhibiting a red-shift of 0.15?eV in comparison with pure ZnO bulk, and their optical absorbance is strong in the region of 200?400?nm, suggesting their full utilization of most of the UV light in sunlight. The product shows evident photocatalytic activity in degradation of RhB under solar light irradiation, and then its solar light degradation efficiency is close to that under UV irradiation, indicating that there is a possibility of practical application. More importantly, the obtained ZnO nanoparticles, because of the quick precipitation by themselves in solution with no stirring, could be easily recycled without any accessorial means such as high-speed centrifuge. The low-cost and scalable preparation, high photocatalytic activity, and convenient recycling of this ZnO nanomaterial gives it potential in purifying waste water. Hence the interesting results in this study indicate the wide range of the Soluble Salt-assisted route for the industrial preparation of many other advanced nanomaterials.
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A Soluble Salt-assisted facile synthetic route to semiconducting GaN nanoparticles
CrystEngComm, 2010Co-Authors: Leshu Yu, Yingying Lv, Xiaolan Zhang, Yu Zhao, Yongliang Zhang, Heyong Huang, Yuying FengAbstract:By using the Soluble Salt as the dispersant, a facile synthetic route has been developed to prepare GaN nanoparticle powders on a large scale and in a high yield of 95.8% through the direct nitridation of Ga–Na2SO4 mixture at 700 °C and followed by washing with water. This preparation method is also applicable to some other low-melting-point-metal oxides. The simple preparation procedure and the range of potential applications of the products made this work both scientifically and technologically interesting.
Suming Chen - One of the best experts on this subject based on the ideXlab platform.
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synthesis of graphene nanosheet powder with layer number control via a Soluble Salt assisted route
RSC Advances, 2014Co-Authors: Yingying Lv, Leshu Yu, Chengming Jiang, Suming ChenAbstract:The principle features in this study lay on the synthesis of graphene nanosheet powders with layer number control from pristine graphite powder via a Soluble Salt-assisted route and on the high thermal stability and good dispersibility of our products in ethanol.
Chengming Jiang - One of the best experts on this subject based on the ideXlab platform.
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synthesis of graphene nanosheet powder with layer number control via a Soluble Salt assisted route
RSC Advances, 2014Co-Authors: Yingying Lv, Leshu Yu, Chengming Jiang, Suming ChenAbstract:The principle features in this study lay on the synthesis of graphene nanosheet powders with layer number control from pristine graphite powder via a Soluble Salt-assisted route and on the high thermal stability and good dispersibility of our products in ethanol.
-
Application of Soluble Salt-assisted route to synthesis of β-Ga 2 O 3 nanopowders
Applied Physics A, 2013Co-Authors: Yingying Lv, Leshu Yu, Dagui Zheng, Chengming JiangAbstract:In the past β-Ga2O3 nanopowders were usually prepared from gallium-based compounds via wet chemical processes. However, those wet chemical routes would lead not only to high cost, but also to the inevitable contamination of the targeted products from unexpected doping. In this work, the Soluble Salt-assisted route has been applied to prepare β-Ga2O3 nanopowders with a yield of 96.5 % through the direct oxidation of Ga–Na2SO4 mixture at 600 °C followed by water washing. Systematical characterizations including SEM, TEM, XRD, Raman, IR, XPS, BET, UV–Vis diffuse reflectance and PL spectrum were conducted. The as-prepared nanopowders were composed of mesoporous nanoparticles and nanosheets with monoclinic Ga2O3, and had a broad UV and blue emissions band from 350 to 550 nm. Furthermore their optical band gap was 4.68 eV, exhibiting a red shift of 0.22 eV in comparison with pure bulk matrix. The interesting results indicated a wide range of Soluble Salt-assisted route for promising industrial production of β-Ga2O3 nanopowders.
Dongzhen Chen - One of the best experts on this subject based on the ideXlab platform.
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application of the Soluble Salt assisted route to scalable synthesis of zno nanopowder with repeated photocatalytic activity
Nanotechnology, 2012Co-Authors: Yingying Lv, Leshu Yu, Heyong Huang, Yuying Feng, Dongzhen ChenAbstract:In this paper, the Soluble Salt-assisted route has been extended to the low-cost and scalable preparation of ZnO nanostructures via the simple oxidation of Zn?Na2SO4 mixture followed by washing with water. The as-prepared ZnO nanopowders are of nanoscaled size, hexagonal phase, and pure, without being stained by Na2SO4. Their optical band gap is 3.22?eV, exhibiting a red-shift of 0.15?eV in comparison with pure ZnO bulk, and their optical absorbance is strong in the region of 200?400?nm, suggesting their full utilization of most of the UV light in sunlight. The product shows evident photocatalytic activity in degradation of RhB under solar light irradiation, and then its solar light degradation efficiency is close to that under UV irradiation, indicating that there is a possibility of practical application. More importantly, the obtained ZnO nanoparticles, because of the quick precipitation by themselves in solution with no stirring, could be easily recycled without any accessorial means such as high-speed centrifuge. The low-cost and scalable preparation, high photocatalytic activity, and convenient recycling of this ZnO nanomaterial gives it potential in purifying waste water. Hence the interesting results in this study indicate the wide range of the Soluble Salt-assisted route for the industrial preparation of many other advanced nanomaterials.
