scholarly journals Synthesis of Nano-ZnO/Diatomite Composite and Research on Photoelectric Application

Catalysts ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1232
Author(s):  
Beibei Yang ◽  
Xuefei Liu ◽  
Zixu Ma ◽  
Qian Wang ◽  
Junjiao Yang
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Sewage Treatment ◽  
Research Area ◽  
Precipitation Method ◽  
Composite Catalyst ◽  
External Bias ◽  
Loading Ratio ◽  
Blue Solution

The key to the commercialization of sustainable energy conversion technologies is the development of high-performance catalysts. The discovery of a stable, efficient, and low-cost multi-function catalyst is key. We used a simple green precipitation method to load diatomite nanozinc oxide particles onto a diatomite substrate. The ZnO is nano-sized. This precipitation method produces ZnO nanoparticles in situ on diatomite. The catalyst degraded 90% of a Methylene blue solution and also degraded gaseous benzene and acetone. Not only can the catalyst be used for the organic degradation of wastewater, but it also has the potential to degrade volatile organic compounds. Photocatalytic efficiency is closely related to the generation and separation of photosynthetic electrons and holes. The effective suppression of the composite rate of photoliving carriers, and thus improvement of the photocatalytic activity, has become a key research area. At present, At present, photocatalysis is an effective technology to inhibit photocarrier synthesis, which is often studied in sewage treatment. Photocatalytic water treatment reduces the combination of photoelectrons and holes by applying an external bias, thus improving the quantum efficiency for the complete mineralization of organic pollutants. The composite catalyst was used for oxygen and hydrogen extraction reactions, and a comparison of the catalysts with various loading ratios showed that the electrolysis water activity of the in situ loaded catalyst is due to pure ZnO, and the efficiency is highest when the loading ratio is 10%. This work provides new methods for the design and further optimization of the preparation of electrolytic aqueous catalysts.

A novel 3D porous electrode of polyaniline and PEDOT:PSS coated SiNWs for low-cost and high-performance supercapacitors

2021 ◽  
Author(s):  
Xiaojuan Shen ◽  
Xuan Zhang ◽  
Tongfei Wang ◽  
Songjun Li ◽  
Zhaoqiang Li
Keyword(s):  
High Performance ◽  
Solution Method ◽  
In Situ Polymerization ◽  
Low Cost ◽  
Porous Electrode ◽  
Simple Solution ◽  
Porous Si ◽  
Supercapacitor Electrode

In this study, a novel 3D porous Si-based supercapacitor electrode was developed by the simple solution method, which involved firstly the in-situ polymerization of polyaniline particles (PANI) on the Si...

Applying multi-scale silica-like three-dimensional networks in PEO matrix via in-situ crosslinking for high-performance solid composite electrolyte

2021 ◽  
Author(s):  
Jiawei Wu ◽  
Jing Chen ◽  
Xiaodong Wang ◽  
An'an Zhou ◽  
Zhenglong Yang
Keyword(s):  
Solid State ◽  
High Performance ◽  
Low Cost ◽  
Three Dimensional ◽  
Electrochemical Stability ◽  
Composite Electrolyte ◽  
Solid State Electrolyte ◽  
Multi Scale ◽  
In Situ Crosslinking

For the higher safety and energy density, solid-state electrolyte with better mechanical strength, thermal and electrochemical stability is a perfect choice. To improve the performance of PEO, usage of low-cost...

Low temperature and high performance ZnSnO thin film transistors engineered by in-situ thermal manipulation

2022 ◽  
Author(s):  
Wengao Pan ◽  
Xiaoliang Zhou ◽  
Qingping Lin ◽  
Jie Chen ◽  
Lei Lu ◽  
...  
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Thin Film Transistors ◽  
High Performance ◽  
Low Cost ◽  
High Mobility ◽  
Processing Temperature ◽  
Practical Application ◽  
Thermal Manipulation

Thin film transistors (TFT) with low cost, high mobility and low processing temperature are key enablers for practical application, which are always contradictory. In this work, we achieved high performance...

scholarly journals An effective technique for constructing wood composite with superior dimensional stability

Holzforschung ◽  
2020 ◽  
Vol 74 (5) ◽  
pp. 435-443
Author(s):  
Xiaoshuai Han ◽  
Zhenxing Wang ◽  
Qinqin Zhang ◽  
Junwen Pu
Keyword(s):  
Mechanical Properties ◽  
Dimensional Stability ◽  
High Performance ◽  
Low Cost ◽  
Sem Analysis ◽  
Wood Composite ◽  
Engineering Structures ◽  
Natural Wood ◽  
Dimensional Instability

AbstractFast-growing wood is an abundant and low-cost material and is widely used for structural building and furniture construction. However, inferior mechanical properties and dimensional instability limit its application in advanced engineering structures. Herein, we developed a simple, effective and “green” method to transform bulk poplar into a high-performance wood composite. The wood composite was prepared by the impregnation of the itaconic acid (IA) solution acting as a grafting anchor into the wood matrix, followed by in situ polymerization of styrene upon heating to form a hydrophobic polymer within the wood scaffold. Scanning electron microscope (SEM) analysis revealed that hydrophobic polystyrene (PS) was deposited in wood cell walls and lumens, leading to a reduced water uptake and remarkably enhanced dimensional stability, as well as generally improved mechanical properties. In addition, the PS generated improvement in the thermal stability of the wood composite in comparison with that of natural wood (W).

In situ growth of MnO2 nanosheets on activated carbon fibers: a low-cost electrode for high performance supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14819-14825 ◽  
Author(s):  
Kai Zhu ◽  
Yu Wang ◽  
Joel A. Tang ◽  
Hailong Qiu ◽  
Xing Meng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Hydrothermal Method ◽  
Carbon Fibers ◽  
High Performance ◽  
Low Cost ◽  
Activated Carbon Fibers ◽  
In Situ Growth ◽  
Mno2 Nanosheets ◽  
Microwave Assisted

MnO2 nanosheets were successfully grown in situ on the surface of activated carbon fibers (ACFs) via a facile microwave-assisted hydrothermal method.

In situ direct growth of single crystalline metal (Co, Ni) selenium nanosheets on metal fibers as counter electrodes toward low-cost, high-performance fiber-shaped dye-sensitized solar cells

Nanoscale ◽  
2016 ◽  
Vol 8 (4) ◽  
pp. 2304-2308 ◽  
Author(s):  
Liang Chen ◽  
Hexing Yin ◽  
Yong Zhou ◽  
Hui Dai ◽  
Tao Yu ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Dye Sensitized Solar Cells ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
High Performance Fiber ◽  
Direct Growth ◽  
Crystalline Metal ◽  
Sensitized Solar Cells

Highly crystalline metal (Co, Ni) selenium (Co0.85Se or Ni0.85Se) nanosheets were in situ grown on metal (Co, Ni) fibers (M–M0.85Se).

High Performance Humidity Sensor Based on ZnO Nanoparticles Synthesized by Co-Precipitation Method

2016 ◽  
Vol 848 ◽  
pp. 99-102 ◽  
Author(s):  
Theerapong Santhaveesuk ◽  
Kwunta Siwawongkasem ◽  
Siriwimon Pommek ◽  
Supab Choopun
Keyword(s):  
Sodium Hydroxide ◽  
Zno Nanoparticles ◽  
High Performance ◽  
Humidity Sensor ◽  
Raw Materials ◽  
Low Cost ◽  
Zinc Nitrate ◽  
Precipitation Method ◽  
Zno Particles ◽  
Co Precipitation

ZnO nanoparticles were successfully synthesized by a low cost co-precipitation method using zinc nitrate and sodium hydroxide as the raw materials. It was observed that the synthesized temperatures greatly effect on the size of ZnO nanoparticles. The lower synthesized temperatures resulted in the smaller nanoparticles. By adjusting the mole ratio of sodium hydroxide, the size of ZnO nanoparticles was also changed. The smallest ZnO particles was 47 nm obtained with 0.7 mole of sodium hydroxide. The smallest ZnO nanoparticles from each synthesized temperatures were fabricated as humidity sensor, showing an impressive performance under different relative humidity (17-94% RH). It should be noticed that the ZnO nanoparticles humidity sensor synthesized at 75 °C exhibited high response for 2 times higher than that of synthesized at 95 °C. This is attributed to the higher surface area of ZnO nanoparticles for absorbed water molecule.

scholarly journals In-Situ Electrical Biasing of Electrically Connected TEM Lamellae with Embedded Nanodevices

2021 ◽  
Author(s):  
Maria Brodovoi ◽  
Kilian Gruel ◽  
Lucas Chapuis ◽  
Aurélien Masseboeuf ◽  
Cécile Marcelot ◽  
...  
Keyword(s):  
Electric Fields ◽  
High Performance ◽  
Low Cost ◽  
Electron Holography ◽  
Device Architecture ◽  
Quantitative Studies ◽  
Transmission Electron ◽  
Microelectronics Industry

Abstract In response to a continually rising demand for high performance and low-cost devices, and equally driven by competitivity, the microelectronics industry excels in meeting innovation challenges and further miniaturizing products. However, device shrinkage and the increasing complexity of device architecture require local quantitative studies. In this paper, we demonstrate with a case study on a nanocapacitor, the capability of transmission electron microscopy in electron holography mode to be a unique in-situ technique for mapping electric fields and charge distributions on a single device.

scholarly journals Low-Cost and High-Performance ZnO Nanoclusters Gas Sensor Based on New-Type FTO Electrode for the Low-Concentration H2S Gas Detection

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 435 ◽  
Author(s):  
Guodong Zhao ◽  
Jingyue Xuan ◽  
Xiaolin Liu ◽  
Fuchao Jia ◽  
Yuping Sun ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Performance ◽  
Gas Sensing ◽  
Low Cost ◽  
Zno Nanorods ◽  
Low Concentration ◽  
New Type ◽  
Zno Nanoclusters ◽  
Fto Glass

A low-cost and high-performance gas sensor was fabricated by the in-situ growing of ZnO nanoclusters (NCs) arrays on the etched fluorine-doped tin dioxide (FTO) glass via a facile dip-coating and hydrothermal method. Etched FTO glass was used as a new-type gas-sensing electrode due to its advantages of being low cost and having excellent thermal and chemical stability. ZnO NCs are composed of multiple ZnO nanorods and can provide adequate lateral contacts to constitute the paths required for the gas-sensing tests simultaneously, which can provide many advantageous point junctions for the detection of low-concentration gases. The gas-sensing tests indicate that the ZnO NCs gas sensor has good selectivity and a high response for the low-concentration H2S gas. The sensing response has reached 3.3 for 500 ppb H2S at 330 °C. The excellent gas-sensing performances should be attributed to the large specific surface area of in-situ grown ZnO NCs, the perfect ohmic contact between ZnO NCs and FTO electrode and the variation of grain boundary barrier at the cross-linked junctions of multiple nanorods. In addition, the detailed effect of work temperature and gas concentration on gas-sensing, the stability of gas sensors and the corresponding response mechanism are also discussed in the present paper.

scholarly journals Study and application of Symphonie model to compute the hydrodynamic processes in the East Sea

2019 ◽  
Vol 19 (4A) ◽  
pp. 1-15
Author(s):  
To Duy Thai ◽  
Bui Hong Long
Keyword(s):  
High Resolution ◽  
High Performance ◽  
Low Cost ◽  
Seawater Temperature ◽  
East Sea ◽  
Time Data ◽  
In Situ Data ◽  
Hydrodynamic Processes ◽  
Hydrodynamic Fields

Hydrodynamic processes in the East Sea have been studied by many Vietnamese and foreign scientists applying the models as advanced tools with low cost and spatial and temporal synchronized dataset to serve their research. However, applying the model to study variability of small and medium structures with very high resolution (a few kilometers) is still challenge for scientists. With the advantages of high quality real-time data, open source hydrodynamic model, and the support from high performance computer (HPC) systems, we have step by step studied and developed the numerical model for study on hydrodynamic fields in the East Sea. The model was validated with high resolution satellite data as well as in-situ data from the ARGO and research vessels. Initial results of the simulation are very good for the surface seawater temperature (SST) field in the East Sea.

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