A novel colloidal deposition method to prepare copper nanoparticles/polystyrene nanocomposite with antibacterial activity and its comparison to the liquid-phase in situ reduction method

2019 ◽  
Vol 74 (2) ◽  
pp. 471-483 ◽  
Author(s):  
Yu Ma ◽  
Yongheng Chen ◽  
Jing Huang ◽  
Zhixin Zhang ◽  
Dongyu Zhao ◽  
...  
CrystEngComm ◽  
2014 ◽  
Vol 16 (7) ◽  
pp. 1322-1333 ◽  
Author(s):  
Shuijin Lei ◽  
Lei Liu ◽  
Chunying Wang ◽  
Xiaolian Shen ◽  
Donghai Guo ◽  
...  

2014 ◽  
Vol 38 (10) ◽  
pp. 4913-4921 ◽  
Author(s):  
Jiajia Hu ◽  
Guangqing Xu ◽  
Jinwen Wang ◽  
Jun Lv ◽  
Xinyi Zhang ◽  
...  

Bi nanoparticles on BiOCl nanosheets, synthesized via in situ reduction, enhance the UV light photocatalytic activity and achieve visible light activity.


Langmuir ◽  
2012 ◽  
Vol 28 (30) ◽  
pp. 11188-11194 ◽  
Author(s):  
Bihua Xia ◽  
Qianling Cui ◽  
Fang He ◽  
Lidong Li

2009 ◽  
Vol 44 (1) ◽  
pp. 30-34 ◽  
Author(s):  
Yanli Song ◽  
Enbo Wang ◽  
Chungui Tian ◽  
Baodong Mao ◽  
Chunlei Wang

2013 ◽  
Vol 661 ◽  
pp. 47-52
Author(s):  
Gang Chen ◽  
Chun Hua Yang

Gold nanoparticles (AuNPs) were attached to the surface of alumina particles by an in-situ immobilizing method. SEM and XPS analysis showed that the coverage of alumina particles by AuNPs increased as the amount of alumina decreased; AuNPs onto alumina particles by the conventional colloidal deposition method were also prepared, whose TEM showed that the coverage of AuNPs was evidently smaller than that in the case of modified colloidal deposition method,although the AuNPs were spread almost uniformly over the surface of alumina particles. Au-immobilized alumina particles were subsequently utilized as the catalysts for direct amination of benzene with NH3H2O as an aminating agent and H2O2 as an oxidant under mild conditions. The reaction conditions were optimized: when catalyst amount was 2.0 g, reaction temperature was 50 °C, NH3H2O amount was 60 mL, H2O2 amount was 30 mL, and reaction time is 2 h, Au-immobilized alumina particles showed the highest aniline yield (1.96 mg) for 25 mL benzene.


2022 ◽  
Author(s):  
Katarzyna Gas ◽  
Maciej Sawicki

Steadily growing interest in magnetic characterization of organic compounds for therapeutic purposes or of other irregularly shaped specimens calls for refinements of experimental methodology to satisfy experimental challenges. Encapsulation in capsules remains the method of choice, but its applicability in precise magnetometry is limited. This is particularly true for minute specimens in the single milligram range as they are outweighed by the capsules and are subject to large alignment errors. We present here a completely new experimental methodology that permits 30-fold in situ reduction of the signal of capsules by substantially restoring the symmetry of the sample holder that is otherwise broken by the presence of the capsule. In practical terms it means that the standard 30 mg capsule is seen by the magnetometer as approximately a 1 mg object, effectively opening the window for precise magnetometry of single milligram specimens. The method is shown to work down to 1.8 K and in the whole range of the magnetic fields. The method is demonstrated and validated using the reciprocal space option of MPMS-SQUID magnetometers; however, it can be easily incorporated in any magnetometer that can accommodate straw sample holders (i.e., the VSM-SQUID). Importantly, the improved sensitivity is accomplished relying only on the standard accessories and data reduction method provided by the SQUID manufacturer, eliminating the need for elaborate raw data manipulations.


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