Construction of a CsPbBr3 modified porous g-C3N4 photocatalyst for effective reduction of CO2 and mechanism exploration

A P-CN/CsPbBr3 photocatalyst with a lamellar porous structure was prepared by a high temperature calcination and freeze drying method, and it exhibited superior CO2 reduction performance under the conditions of full spectrum irradiation.

Download Full-text

Flexible free-standing graphene paper with interconnected porous structure for energy storage

Journal of Materials Chemistry A ◽

10.1039/c4ta04324c ◽

2015 ◽

Vol 3 (8) ◽

pp. 4428-4434 ◽

Cited By ~ 42

Author(s):

Kewei Shu ◽

Caiyun Wang ◽

Sha Li ◽

Chen Zhao ◽

Yang Yang ◽

...

Keyword(s):

Energy Storage ◽

Solid State ◽

Porous Structure ◽

Freeze Drying ◽

Lithium Battery ◽

Drying Method ◽

Free Standing ◽

Electrode Performance ◽

Porous Graphene ◽

Graphene Paper

Flexible porous graphene paper was obtained via facile freeze drying method. It exhibits an excellent electrode performance in both the lithium battery and solid-state supercapacitor.

Download Full-text

STRUCTURAL FEATURES AND MECHANICAL PROPERTIES OF PLLA/PEARL POWDER SCAFFOLDS

Journal of Mechanics in Medicine and Biology ◽

10.1142/s0219519413500206 ◽

2013 ◽

Vol 13 (01) ◽

pp. 1350020 ◽

Cited By ~ 7

Author(s):

Y. S. LIU ◽

Q. L. HUANG ◽

Q. L. FENG ◽

N. M. HU ◽

O. ALBERT

Keyword(s):

Mechanical Properties ◽

Tissue Engineering ◽

Lactic Acid ◽

Yield Strength ◽

Porous Structure ◽

Freeze Drying ◽

Structural Features ◽

Drying Method ◽

Composite Scaffolds ◽

Powder Content

In order to improve the mechanical properties of scaffolds for bone tissue engineering, the present study aims to bring calcium carbonate (CaCO3) with signaling molecules, namely pearl powder, into poly(L-lactic acid) (PLLA). PLLA/aragonite and PLLA/vaterite scaffolds were successfully fabricated by the freeze-drying method. Both composite scaffolds had a similar porous structure but a different saturated content of pearl powders. For both scaffolds, the porosity decreases and yield strength increases as pearl powder content increases. Introducing pearl powders into PLLA can improve the mechanical properties of the scaffolds. The porous structure plays a crucial role in the yield strength of pure PLLA scaffolds, whereas the yield strength of PLLA/pearl powder scaffolds mostly relies on pearl powder content.

Download Full-text

Evaluation of Innovative Dried Purée from Jerusalem Artichoke—In Vitro Studies of Its Physicochemical and Health-Promoting Properties

Molecules ◽

10.3390/molecules26092644 ◽

2021 ◽

Vol 26 (9) ◽

pp. 2644

Author(s):

Jan Oszmiański ◽

Sabina Lachowicz ◽

Paulina Nowicka ◽

Paweł Rubiński ◽

Tomasz Cebulak

Keyword(s):

Freeze Drying ◽

Jerusalem Artichoke ◽

Polyphenolic Compounds ◽

Raw Material ◽

Vacuum Drying ◽

Drying Methods ◽

Drying Method ◽

Activity Inhibition ◽

Health Promoting

The present study aimed to evaluate the effect of Jerusalem artichoke processing methods and drying methods (freeze drying, sublimation drying, vacuum drying) on the basic physicochemical parameters, profiles and contents of sugars and polyphenolic compounds, and health-promoting properties (antioxidant activity, inhibition of the activities of α-amylase, α-glucosidase, and pancreatic lipase) of the produced purée. A total of 25 polyphenolic compounds belonging to hydroxycinnamic phenolic acids (LC-PDA-MS-QTof) were detected in Jerusalem artichoke purée. Their average content in the raw material was at 820 mg/100 g dm (UPLC-PDA-FL) and was 2.7 times higher than in the cooked material. The chemical composition and the health-promoting value of the purées were affected by the drying method, with the most beneficial values of the evaluated parameters obtained upon freeze drying. Vacuum drying could offer an alternative to freeze drying, as both methods ensured relatively comparable values of the assessed parameters.

Download Full-text

Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption

Nano-Micro Letters ◽

10.1007/s40820-021-00635-1 ◽

2021 ◽

Vol 13 (1) ◽

Author(s):

Weihua Gu ◽

Jiaqi Sheng ◽

Qianqian Huang ◽

Gehuan Wang ◽

Jiabin Chen ◽

...

Keyword(s):

Microwave Absorption ◽

Thermal Insulation ◽

Freeze Drying ◽

Thermal Infrared ◽

Carbon Aerogel ◽

Carbon Aerogels ◽

List Type ◽

Drying Method ◽

Cross Sectional ◽

Compression Resistance

Highlights The eco-friendly shaddock peel-derived carbon aerogels were prepared by a freeze-drying method. Multiple functions such as thermal insulation, compression resistance and microwave absorption can be integrated into one material-carbon aerogel. Novel computer simulation technology strategy was selected to simulate significant radar cross-sectional reduction values under real far field condition. . Abstract Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property, heat-insulating ability and compression resistance are highly attractive in practical applications. Meeting the aforesaid requirements simultaneously is a formidable challenge. Herein, ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process, forming porous network architecture. With the heating platform temperature of 70 °C, the upper surface temperatures of the as-prepared carbon aerogel present a slow upward trend. The color of the sample surface in thermal infrared images is similar to that of the surroundings. With the maximum compressive stress of 2.435 kPa, the carbon aerogels can provide favorable endurance. The shaddock peel-based carbon aerogels possess the minimum reflection loss value (RLmin) of − 29.50 dB in X band. Meanwhile, the effective absorption bandwidth covers 5.80 GHz at a relatively thin thickness of only 1.7 mm. With the detection theta of 0°, the maximum radar cross-sectional (RCS) reduction values of 16.28 dB m2 can be achieved. Theoretical simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving feature. This work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.

Download Full-text

Preparation of calcium hexaluminate porous ceramics by novel pectin based gelcasting freeze-drying method

Ceramics International ◽

10.1016/j.ceramint.2020.12.024 ◽

2020 ◽

Author(s):

Lei Yuan ◽

Endong Jin ◽

Chaoyue Li ◽

Zhenli Liu ◽

Chen Tian ◽

...

Keyword(s):

Freeze Drying ◽

Porous Ceramics ◽

Drying Method ◽

Calcium Hexaluminate

Download Full-text

Biocompatibility and osteoconductivity of scaffold porous composite collagen–hydroxyapatite based coral for bone regeneration

Open Chemistry ◽

10.1515/chem-2020-0080 ◽

2020 ◽

Vol 18 (1) ◽

pp. 584-590 ◽

Cited By ~ 1

Author(s):

◽

Dyah Hikmawati ◽

Umi Kulsum ◽

Djony Izak Rudyardjo ◽

Retna Apsari ◽

...

Keyword(s):

Bone Regeneration ◽

Freeze Drying ◽

Bone Growth ◽

Viable Cell ◽

Drying Method ◽

Porous Composite ◽

Viable Cells

AbstractThe synthesis of collagen–hydroxyapatite composites has been carried out, and the biocompatibility and osteoconductivity properties have been tested. This research was conducted to determine the ability of hydroxyapatite–collagen composites to support the bone growth through the graft surface. Hydroxyapatite used in this study was synthesized from coral with a purity of 96.6%, while collagen was extracted from the chicken claw. The process of forming a scaffold of collagen–hydroxyapatite composites was carried out using the freeze-drying method at −80°C for 4 h. The biocompatibility characteristics of the sample through the cytotoxicity tests showed that the percentage of viable cells in collagen–hydroxyapatite biocomposite was 108.2%, which is higher than the percentage of viable cells of hydroxyapatite or collagen material. When the viable cell is above 100%, collagen–hydroxyapatite composites have excellent osteoconductivity as a material for bone regeneration.

Download Full-text