In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

The possibility of removing pharmaceuticals from aqueous solutions was examined using ibuprofen (Ibu) oxidation as an example, using in situ electrochemically synthesized ferrate(VI), a strong oxidant and coagulant, with forming of non-harmful byproducts. A solution of ibuprofen of 206 mg/L in 0.1 M phosphate buffer solution was treated with different amounts of fresh, electrochemically synthesized ferrate(VI). The changes of ibuprofen concentration in samples were determined using a UV-Vis spectrophotometer. The extent of mineralization was estimated using the changes in chemical oxygen demand (COD) values and total organic carbon (TOC) values of test samples. The largest reduction of the concentration of Ibu (41.75%) was obtained by adding 69.2 mg/L ferrate(VI) as Fe (Ibu: Fe = 1: 0.34). An effective removal of ibuprofen from aqueous solutions was recorded up to 68% and it can be done by using ferrate(VI) in the ratio Ibu: Fe = 1:3 as Fe. The possibility of ibuprofen removal by ferrate(VI) was confirmed by COD and TOC results, which demonstrated reduction up to 65% and 63.6%, respectively.

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Homogeneous Microstructure of ZrO2-BN Composites with In Situ Synthesized BN

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.602-603.353 ◽

2014 ◽

Vol 602-603 ◽

pp. 353-357

Author(s):

Lei Chen ◽

Yu Jin Wang ◽

Kamal Hammadi ◽

Yu Zhou

Keyword(s):

Aqueous Solution ◽

Nitrogen Atmosphere ◽

In Situ Synthesis ◽

Precipitation Method ◽

Composite Particles ◽

Homogeneous Microstructure ◽

Heterogeneous Precipitation ◽

New Process ◽

Sem Microstructure

A new process was used to improve microstructure homogeneity of ZrO2-BN composites. Boric acid was deposited on the surface of ZrO2 particles by heterogeneous precipitation method from aqueous solution of boron oxide under the action of heat by evaporation. In order to improve the microstructure homogeneity, the mixture powder was stirred over-vigorously until transforming into the highly viscosity slurry. Subsequently, the obtained mixture powders were dried, nitrided at 900 °C in ammonia and crystallized at 1500 °C in nitrogen atmosphere to obtain in-situ synthesized BN coated on the surface of ZrO2 composite particles. Finally, ZrO2-BN composites incorporated with 30 vol. % BN were prepared by hot-pressing. The SEM microstructure and fracture surface of ZrO2-BN composites revealed that in-situ synthesis BN particles were dispersed in the ZrO2 matrix homogeneously.

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In situ synthesis of high-efficiency CsPbBr3/CsPb2Br5 composite nanocrystals in aqueous solution of microemulsion

Green Chemistry ◽

10.1039/d0gc02059a ◽

2020 ◽

Vol 22 (16) ◽

pp. 5257-5261

Author(s):

Sunqi Lou ◽

Zhi Zhou ◽

Weijiang Gan ◽

Tongtong Xuan ◽

Zhen Bao ◽

...

Keyword(s):

Aqueous Solution ◽

High Efficiency ◽

In Situ Synthesis ◽

Microemulsion Method

An innovative microemulsion method was reported for the preparation of CsPbBr3/CsPb2Br5 composite NCs in water.

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Facile One-Pot In Situ Synthesis and Characterization of a Cu2O/Cu2(PO4)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.1c01462 ◽

2021 ◽

Author(s):

Farshad Beshkar ◽

Masoud Salavati-Niasari ◽

Omid Amiri

Keyword(s):

Aqueous Solution ◽

Photocatalytic Degradation ◽

In Situ Synthesis ◽

Synthesis And Characterization ◽

Direct Sunlight ◽

One Pot ◽

Sunlight Irradiation

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PHYSICOCHEMICAL IN-SITU SYNTHESIS OF PRUSSIAN BLUE FOR CESIUM REMOVAL

Materiali in tehnologije ◽

10.17222/mit.2020.222 ◽

2021 ◽

Vol 55 (4) ◽

Author(s):

Woo Jung Lee ◽

Sang Sun Choi ◽

Soon Hong Lee ◽

Kyung Jae Yun ◽

Yeon Ji Cho ◽

...

Keyword(s):

Specific Surface ◽

Prussian Blue ◽

Carbon Fibers ◽

Surface Characteristics ◽

High Water ◽

In Situ Synthesis ◽

Iron Chloride ◽

Cesium Removal ◽

Key Factor

Prussian blue (PB) has attracted substantial attention as a potential adsorbent for radionuclides due to its high water-insoluble characteristics. Here, PB-encapsulating activated carbon fibers (ACFs) obtained via a physicochemical in-situ synthesis were introduced for an effective cesium removal. ACFs were used as an anchor platform to hold PB within the pores. The physicochemical synthesis of PB (PB-ACF-B) was done by stirring ACFs in an iron chloride solution. Potassium ferrocyanate was injected during the stirring process. As the counterpart, powdered PB (PB-ACF-A) was prepared with a physical synthesis. Throughout the test, PB-ACF-B revealed a decrease in the specific surface characteristics compared to PB-ACF-A; however, it also experienced an increase in the 133Cs adsorption. In all the cases, the dosage of the absorbent and radionuclide was in positive correlation with the adsorption performance. Further, the amount of PB was found to be the key factor for the adsorption of 133Cs compared to the specific surface characteristics.

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