نتایج جستجو برای: au g c3n4 composite

تعداد نتایج: 632853  

2017
Xiaowen Huang Huimin Hao Yang Liu Yujiao Zhu Xuming Zhang Yasser M. Sabry

Artificial photosynthesis is the imitation of natural photosynthesis, which promises an efficient way to use solar energy to synthesize organic matters, in which the key step is the coenzyme regeneration (NADH/NADPH). To achieve an efficient regeneration rate, various photocatalysts have been developed, such as g-C3N4 and mesoporous carbon nitride (mpg-C3N4). Generally, efficiency determination...

Journal: :Separations 2022

In order to recover lithium from brine with a high Mg2+/Li+ ratio, positively charged nanofiltration (NF) membrane was prepared by depositing polydopamine (PDA)-coated graphitic carbon nitride (g-C3N4) as the interlayer (PDA-g-C3N4) and interfacial polymerization (IP) of polyethyleneimine (PEI) trimesoyl chloride (TMC) carried out. Under optimal conditions, water contact angle composite is only...

Journal: :Advanced energy and sustainability research 2022

Pharmaceuticals and personal care products (PPCPs) have attracted widespread attention due to their durability the environment. Therefore, it is highly desirable develop new technologies that are environmentally friendly, energy saving, compatible degrade these pollutants. In this study, a vis–NIR-driven efficient S-scheme photocatalyst, WO3−x /S doped g-C3N4, used for PPCPs degradation. The re...

Journal: :Nanoscale 2015
Dandan Zheng Caijing Huang Xinchen Wang

Hollow-structured g-C3N4 polymers with a high thermal stability up to 550 °C and an enhanced photocatalytic activity have been developed by post-annealing treatment, which effectively modifies the textural, crystal, and electronic properties of the g-C3N4 semiconductors without extra chemical assistance. This is a unique example of thermally and chemically stable conjugated polymers with hollow...

Journal: :The Analyst 2015
Hai-Yu Chen Lin-Wei Ruan Xia Jiang Ling-Guang Qiu

Highly fluorescent g-C3N4 nanosheets were facilely fabricated by exfoliating bulk g-C3N4 under ultrasonic irradiation for 1 h. The atomic force microscopy (AFM) image shows that the resultant g-C3N4 nanosheets are ∼6-14 nm thick, and the suspension is stable in air for several weeks. Remarkably, the obtained nanosheets exhibited strong fluorescence with an extremely high quantum yield (QY) up t...

Journal: :Journal of environmental chemical engineering 2022

Different synthesis temperatures (450–550 °C) were applied to synthesize g-C3N4 with the highest visible-light triggered photocatalytic activity. The best performing photocatalyst was synthesized at 550 °C due created favourable structure that expressed lowest band gap and charge carrier recombination rate. To further improve activity of g-C3N4, different g-C3N4/TiO2 (gCN/TNP) composites varyin...

Journal: :Coatings 2022

This study explores the tribological performance of microwave-assisted synthesized g-C3N4/MoS2 coatings. The two-dimensional transition metal dichalcogenide (TMD) nanosheet is getting prominence in tribology due to its layered structure. graphitic carbon nitride (g-C3N4) was made using calcination method and nanocomposite with molybdenum disulfide (MoS2) produced a method. structure morphology ...

2016
Han Sun Yue Cao Leiyu Feng Yinguang Chen

Reducing the recombination probability of photogenerated electrons and holes is pivotal in enhancing the photocatalytic ability of graphitic carbon nitride (g-C3N4). Speeding the departure of photogenerated electrons is the most commonly used method of achieving this. To the best of our knowledge, there is no report on suppressing the recombination of photogenerated electron-hole pairs by immob...

Successful synthesis of the stable metal-free two-dimensional polymer graphitic carbon-nitride with remarkable properties has made it as one of the most promising nanostructures in many novel nanodevices, especially photocatalytic ones. Understanding the mechanical properties of nanostructures is of crucial importance. Thus, this study employs density functional theory (DFT) to obtain the mecha...

2013
Yuanhao Zhang Qiwen Pan Guanqi Chai Minru Liang Guoping Dong Qinyuan Zhang Jianrong Qiu

Graphite like C3N4 (g-C3N4) was synthesized facilely via the low temperature thermal condensation of melamine between 300-650°C. The results showed that the products maintained as melamine when the temperature is below 300°C. With the increase of temperature, the products were transformed into carbon nitride and amorphous g-C3N4 successively. The morphology of products was changed from spherica...

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