Template-free synthesis of hierarchical porous calcium carbonate microspheres for efficient water treatment

The necessity of providing clean water sources increases the demand to develop catalytic systems for water treatment. Good pollutants adsorbers are a key ingredient, and CuO is one of the candidate materials for this task. Among the different approaches for CuO synthesis, precipitation out of aqueous solutions is a leading candidate due to the facile synthesis, high yield, sustainability, and the reported shape control by adjustment of the counter anions. We harness this effect to investigate the formation of copper oxide-based 3D structures. Specifically, the counter anion (chloride, nitrate, and acetate) affects the formation of copper-based hydroxides and the final structure following their conversion into copper oxide nanostructures over porous templates. The formation of a 3D structure is obtained when copper chloride or nitrate reacts with a Sorites scaffold (marine-based calcium carbonate template) without external hydroxide addition. The transformation into copper oxides occurs after calcination or reduction of the obtained Cu2(OH)3X (X = Cl– or NO3–) while preserving the porous morphology. Finally, the formed Sorites@CuO structure is examined for water treatment to remove heavy metal cations and degrade organic contaminant molecules.

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Hierarchical porous calcium carbonate microspheres as drug delivery vector

Progress in Natural Science Materials International ◽

10.1016/j.pnsc.2017.11.005 ◽

2017 ◽

Vol 27 (6) ◽

pp. 674-677 ◽

Cited By ~ 8

Author(s):

Hui Yang ◽

Yunfeng Wang ◽

Tongxiang Liang ◽

Yiqun Deng ◽

Xiaopeng Qi ◽

...

Keyword(s):

Drug Delivery ◽

Calcium Carbonate ◽

Delivery Vector ◽

Hierarchical Porous ◽

Porous Calcium Carbonate

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Nanowires self-assemble into β-MnO2 nanospheres to form crosslinking 3D hierarchical porous networks: with template-free fabrication and good supercapacitive performance over a broad temperature range

Sustainable Energy & Fuels ◽

10.1039/d1se00995h ◽

2021 ◽

Vol 5 (19) ◽

pp. 4944-4954

Author(s):

Li-Li Yu ◽

Wei-Ling Xu ◽

Jian-Guo Zhang ◽

Shuang Li ◽

Rong-Bing Li ◽

...

Keyword(s):

Broad Temperature Range ◽

Supercapacitive Performance ◽

Temperature Range ◽

Porous Networks ◽

Self Assembling ◽

Hierarchical Porous ◽

Template Free

Template-free fabrication of nanowires self-assembling into nanospheres and crosslinking into 3D hierarchical porous β-MnO2 networks with good supercapacitive performance over a broad temperature range.

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Synthesis of calcium carbonate nanocrystals and their potential application as vessels for drug delivery

10.1063/1.4922570 ◽

2015 ◽

Cited By ~ 4

Author(s):

Viviana Vergaro ◽

Elisabetta Carata ◽

Elisa Panzarini ◽

Francesca Baldassare ◽

Luciana Dini ◽

...

Keyword(s):

Drug Delivery ◽

Calcium Carbonate ◽

Potential Application

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Novel Fe3O4/HNT@rGO composite via a facile co-precipitation method for the removal of contaminants from aqueous system

RSC Advances ◽

10.1039/c6ra01279e ◽

2016 ◽

Vol 6 (54) ◽

pp. 49228-49235 ◽

Cited By ~ 10

Author(s):

Chengwei Gao ◽

Baojun Li ◽

Ning Chen ◽

Jie Ding ◽

Qiang Cai ◽

...

Keyword(s):

Heat Treatment ◽

Water Treatment ◽

Potential Application ◽

High Performance ◽

Aqueous System ◽

Precipitation Method ◽

Precipitation Process ◽

System P ◽

Removal Of Contaminants ◽

Co Precipitation

Fe3O4/HNT@rGO composite (FHGC) was fabricated via a facile co-precipitation process, followed by heat treatment. For RhB and As5+removal, the high performance and easy separation of FHGC highlight its potential application in water treatment.

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