JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Chang-Lian Xu,Chongfeng Yuan,Zelong Yang,Xiaoxun Xu,Guiyin Wang,Zhanbiao Yang,Zhang Cheng,Shirong Zhang,Ting Li,Guochun Lv,Junzhuo Cai,Xin Qi
Energy consumption from air cooling systems in summer, water scarcity in hot regions, and the functional reusability of waste paper are emerging environmental problems. Finding solutions to these problems simultaneously remains a significant challenge. Herein, a superhydrophobic passive cooling Cellulose-CaCO 3 film with hierarchical nano-sheets was fabricated to realize daytime radiative cooling with a temperature drop of 15–20 °C in summer and water harvesting with harvesting efficiency of 387 mg cm −2 h −1 bd utilization of recycled waste paper. The superhydrophobic Cellulose-CaCO 3 film demonstrates its self-cleaning properties against inorganic and organic pollutants . Furthermore, the superhydrophobicity of the film was maintained after base/acid corrosions, dynamic water flushing, and thermal treatment at 100 °C for 7 h, exhibiting good durability of the superhydrophobicity. Moreover, the superhydrophobic Cellulose-CaCO 3 film is nonflammable after exposure to fire combustion for 1 min. In addition to waste paper, waste maize straws, and pasteboards were also collected to produce superhydrophobic passive cooling films. Results indicate that the above three cellulose-based raw materials can be well used to prepare durable superhydrophobic passive cooling materials. Environmental toxicology assessments confirm the safety of the material. This study not only provides a protocol for preparing superhydrophobic materials; but also demonstrates their potential for passive cooling and water harvesting.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2016
·
IF 5.31
Shangqing Lu,Sufang Wu
Li 2 SO 4 doped nano CaO (Li 2 SO 4 @nano CaO) based CO 2 adsorbent has been developed to improve calcination–carbonation durability. Li 2 SO 4 @nano CaO adsorbent was obtained by calcination of Li 2 SO 4 doped nano CaCO 3 that was prepared by a simple wet solution impregnation method. The morphology and microstructural properties of the adsorbent were examined by scanning electron microscopy (SEM) and nitrogen physisorption tests, and its cyclic calcination–carbonation performance was evaluated by thermogravimetric analysis (TGA). The results show that Li 2 SO 4 @nano CaO adsorbent maintains a 51.0% CaO conversion after 11 cycles under the calcination temperature of 750 °C and carbonation temperature of 600 °C with an optimized Li 2 SO 4 content of 3.0–5.0 wt.%. Alternatively, pure nano CaO maintains only a 27.3% conversion at the same conditions. A physical property analysis reveals that the superior performance of Li 2 SO 4 @nano CaO adsorbent is attributed to the pore diameter enlargement and to the increase of macro-pore proportion due to Li 2 SO 4 incorporation. Moreover, the carbonation and calcination rates of Li 2 SO 4 @nano CaO adsorbent are accelerated compared with nano CaO adsorbent, and the complete decomposition temperature is at least 15 °C lower. In comparison with the adsorbent doped with other lithium salts (Li 2 CO 3 and LiCl), Li 2 SO 4 @nano CaO adsorbent possesses the best durability under equivalent doping conditions. Furthermore, the positive linear correlation between the complete decomposition temperature and CaO conversion has been maintained.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2024
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IF 7.4
Yizheng Zhang,Genshen Li,Saisai Zhang,Shuqiong Luo,Xuemao Guan,Jianping Zhu,Xiangming Zhou,Songhui Liu
This study investigates the enhancement of mechanical properties in carbonated steel slag through surfactant-assisted CaCO 3 crystallization. Sodium dodecyl benzene sulfonate (SDBS) was employed at various concentrations (0.1–0.4 mol/L) and temperatures (20–60 °C) to modulate the carbonation process. Optimal performance was achieved with 0.2 mol/L SDBS at 40 °C, resulting in a maximum CO 2 uptake of 8.51 % and a compressive strength of 62.89 MPa, 81.66 % higher than unmodified steel slag. Characterization techniques confirmed the formation of crystalline calcite, vaterite, and aragonite, contributing to improved microstructure and strength. SDBS micelles act as templates for CaCO 3 nucleation and growth, with low concentrations facilitating carbonation and high concentrations inhibiting it. This research offers new insights into surfactant-assisted crystallization for enhancing carbonated steel slag properties, paving the way for high-performance, eco-friendly building materials from industrial waste.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2016
·Vol. 28
·期 3
·367-372
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IF 1.823
Zhenling Shen,Xin Zhi,Puyu Zhang
Polysuccinimide was synthesized from maleic anhydride and urea. A polyaspartic acid derivative (PASP-Try-SEA) was synthesized from the polysuccinimide with 2 -aminoethanesulfonic acid and tryptophan. The products were characterized by UV, FTIR, 1 H NMR, TGA and PL, respectively. The results showed that the fluorescent chromophore-indolyl groups were successfully incorporated into PASP. The relationship between the fluorescence intensity and the concentration of fluorescent polyaspartic acid (FPASP) is linear with the excitation wavelength of 366 nm and 422 nm. FPASP also showed excellent scale inhibition properties with a scale inhibition rate of 78% achieved for CaCO 3 with a dosage of 9 mg/L and a significantly enhanced scale inhibition effect for CaSO 4 , achieving an inhibition rate of 98%, which were determined using the static scale inhibition method. When FPASP was added to the solution, CaCO 3 and CaSO 4 deposits showed flower patterns with floppy accumulation by scanning electron microscopy. Copyright © 2016 John Wiley & Sons, Ltd.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
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2013
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IF 2.404
Chao Du,Jun Shi,Jin Shi,Li Zhang,Shaokui Cao
Hybrid CaCO 3 microparticles coated by sodium poly(styrene sulfonate) (PSS) and aliphatic poly(urethane-amine) (PUA) were developed as thermal-/pH-responsive drug delivery vehicles via LbL self-assembly technique. The DOX release from the CaCO 3 microparticles was higher than 60% within 36 h, whereas the value of PUA/PSS-coated microparticles was only 20%. The results demonstrated that the PUA/PSS multilayer coating could reduce the drug release rate and significantly assuage the initial burst release of DOX. In addition, the drug release of the hybrid microparticles was found to be thermal-/pH-dual responsive. More interestingly, more than 90% of DOX was released in 36 h at pH 2.1 and 55 °C owing to the combined action of the dissolution of the CaCO 3 core and the shrinkage of aliphatic PUA.
研究领域:
药剂学
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生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2021
·Vol. 19
·期 1
·1-16
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IF 10.435
Guo Xiaoming,Li Xiaoying,Chan Leung,Huang Wei,Chen Tianfeng
Background Nanoparticles assembled from food-grade calcium carbonate have attracted attention because of their biocompatibility, digestibility, particle and surface features (such as size, surface area, and partial wettability), and stimuli-responsiveness offered by their acid-labile nature. Results Herein, a type of edible oil-in-water Pickering emulsion was structured by calcium carbonate nanoparticles (CaCO 3 NPs; mean particle size: 80 nm) and medium-chain triglyceride (MCT) for delivery of lipophilic drugs and simultaneous oral supplementation of calcium. The microstructure of the as-made CaCO 3 NPs stabilized Pickering emulsion can be controlled by varying the particle concentration ( c ) and oil volume fraction ( φ ). The emulsification stabilizing capability of the CaCO 3 NPs also favored the formation of high internal phase emulsion at a high φ of 0.7–0.8 with excellent emulsion stability at room temperature and at 4 °C, thus protecting the encapsulated lipophilic bioactive, vitamin D3 (VD3), against degradation. Interestingly, the structured CaCO 3 NP-based Pickering emulsion displayed acid-trigged demulsification because of the disintegration of the CaCO 3 NPs into Ca 2+ in a simulated gastric environment, followed by efficient lipolysis of the lipid in simulated intestinal fluid. With the encapsulation and delivery of the emulsion, VD3 exhibited satisfying bioavailability after simulated gastrointestinal digestion. Conclusions Taken together, the rationally designed CaCO 3 NP emulsion system holds potential as a calcium-fortified formulation for food, pharmaceutical and biomedical applications.
研究领域:
食品科学
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药学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2012
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IF 2.159
Heng Cao,Jinrong Yao,Zhengzhong Shao
Surfaces with micrometer and nanometer sized hierarchical structures were fabricated by an one-step in situ additive controlled CaCO 3 mineralization method. After chemical modification, the surfaces with various morphologies showed superhydrophobicity in different states, which could be easily adjusted by the initial supersaturation of the mineralization solution (concentration of calcium ion and poly(glutamic acid)). Generally, the “lotus state” surface which was covered by a thick layer of tetrahedron-shaped CaCO 3 particles to exhibit a contact angle (CA) of 157±1° and a very low contact angle hysteresis (CAH) (roll-off angle=1°) was produced under high supersaturation. On the other hands, the petal-like surface with flower-shaped calcite spherulites was obtained in a relative low supersaturation, which showed both high CA (156±2°) and CAH (180°) in a “Cassie impregnating wetting state”.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Lisha Pu,Zhiang Yuan,Yuting Cai,Xusheng Li,Zhongxin Xue,Yuzhong Niu,Yan Li,Songmei Ma,Wenlong Xu
Currently, the development of hydrogels with excellent mechanical properties (elasticity, fatigue resistance, etc.) and conductive properties can better meet their needs in the field of flexible sensor device applications. Generally, hydrogels with a denser cross-linking density tend to have better mechanical properties, but the improvement in mechanical properties comes at the expense of reduced electrical conductivity. Directly generating CaCO3 in the hydrogel prepolymer can not only increase the cross-linking density of its network but also introduce additional ions to enhance its internal ionic strength, which is beneficial to improving the conductivity of the hydrogel. It is still a big challenge to directly generate CaCO3 in the static prepolymer solution and ensure its uniform dispersion in the hydrogel. Herein, we adopted an improved preparation method to ensure that the directly generated CaCO3 particles can be evenly dispersed in the static prepolymer solution until the polymerization is completed. Finally, a PAM/PVA/CaCO3 hydrogel with supertensile, compressive, toughness, and fatigue resistance properties was prepared. In addition, the presence of free Na+ and Cl– gives the hydrogel excellent conductivity and sensing performance to monitor daily human activities. On the basis of the application of hydrogels in information communication, we have further deepened this application by combining the characteristics of hydrogels themselves. Combined with ASCII code, the hydrogel can also be applied in information exchange and information encryption and decryption, achieving the antitheft function in smart locks. A variety of excellent performance integrated PAM/PVA/CaCO3 hydrogels have broad application prospects for flexible sensors, highlighting great potential in human–computer interaction and intelligent information protection.
研究领域:
材料科学
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生物医学工程
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智能材料
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产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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2018
·Vol. 124
·期 3
·1-10
·
IF 1.604
Liu Min,Kang Ming,Chen Kexu,Mou Yongren,Sun Rong
Integrating the processes of preparation of CaCO 3 :Eu 3+ and its surface-coating, core–shell structured CaCO 3 :Eu 3+ @SiO 2 phosphors with red emission were synthesized by the carbonation method and surface precipitation procedure using sodium silicate as silica source. The phase structure, thermal stability, morphology and luminescent property of the as-synthesized samples were characterized by X-ray diffraction, Fourier transform infrared spectrum, thermal analysis, field-emission scanning electron microscopy, transmission electron microscope and photoluminescence spectra. The experimental results show that Eu 3+ ions as the luminescence center are divided into two types: one is at the surface of the CaCO 3 and the other inhabits the site of Ca 2+ . For CaCO 3 :Eu 3+ @SiO 2 phosphors, the SiO 2 layers are continuously coated on the surface of CaCO 3 :Eu 3+ and show a typical core–shell structure. After coated with SiO 2 layer, the luminous intensity and the compatibility with the rubber matrix increase greatly. Additionally, the luminous intensity increases with the increasing of Eu 3+ ions concentration in CaCO 3 core and concentration quenching occurs when Eu 3+ ions concentration exceeds 7.0 mol%, while it is 5.0 mol% for CaCO 3 :Eu 3+ phosphors. Therefore, preparation of CaCO 3 :Eu 3+ @SiO 2 phosphors can not only simplify the experimental process through integrating the preparation of CaCO 3 :Eu 3+ and SiO 2 layer, but also effectively increase the luminous intensities of CaCO 3 :Eu 3+ phosphors. The as-obtained phosphors may have potential applications in the fields of optical materials and functional polymer composite materials, such as plastics and rubbers.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Yingyue Hu,Xinyao Hu,Lu Xue,Baolong Cui,Yi Du
The modulation of crystal surface is one of the important means of photocatalyst modification. BiOBr photocatalyst with exposed (1 1 0) facets was synthesized at room temperature and pressure using CaCO 3 as a directing agent in this experiment. The addition of CaCO 3 not only promoted the exposed facets of BiOBr from (1 0 2) to (1 1 0), but also improved its ability of photocatalytic degradation of pollutants, meanwhile, changed the specific surface area of BiOBr, provided more active sites, and enhanced the adsorption capacity of BiOBr. At the same time, the effects of different alkaline earth metals on the performance of BiOBr photocatalytic materials were compared, it was determined that the degradation rate of RhB of BiOBr photocatalyst reached 97% within 60 min when adding 500 wt% CaCO 3 , and the main active group in the degradation experiment was h + . In conclusion, BiOBr with different main exposed facets was prepared in this paper, and a new idea was provided for alkaline earth metals in the field of photocatalysis.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2024
·
IF 2.2
Tianwen Zheng,Wenbo Fei,Daibing Hou,Peizhong Li,Naijin Wu,Moxi Wang,Yangfan Feng,Huilong Luo,Nan Luo,Wenxia Wei
nZVI has attracted much attention in the remediation of contaminated soil and groundwater, but the application is limited due to its aggregation, poor stability, and weak migration performance. The biological CaCO3 was used as the carrier material to support nZVI and solved the nZVI agglomeration, which had the advantages of biological carbon fixation and green environmental protection. Meanwhile, the distribution of nZVI was characterised by SEM-EDS and TEM carefully. Subsequently, the dispersion stability of bare nZVI and CaCO3@nZVI composite was studied by the settlement experiment and Zeta potential. Sand column and elution experiments were conducted to study the migration performance of different materials in porous media, and the adhesion coefficient and maximum migration distances of different materials in sand columns were explored. SEM-EDS and TEM results showed that nZVI could be uniformly distributed on the surface of biological CaCO3. Compared with bare nZVI, CaCO3@nZVI composite suspension had better stability and higher absolute value of Zeta potential. The migration performance of nZVI was poor, while CaCO3@nZVI composite could penetrate the sand column and have good migration performance. What’s more, the elution rates of bare nZVI and CaCO3@nZVI composite in quartz sand columns were 5.8% and 51.6%, and the maximum migration distances were 0.193 and 0.885 m, respectively. In summary, this paper studies the stability and migration performance of bare nZVI and CaCO3@nZVI composite, providing the experimental and theoretical support for the application of CaCO3@nZVI composite, which is conducive to promoting the development of green remediation functional materials.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Baolei Dong,Hongfang Li,Jiefang Sun,Yuan Li,Ghulam Mujtaba Mari,Xuezhi Yu,Wenbo Yu,Kai Wen,Jianzhong Shen,Zhanhui Wang
Analytical methods with high sensitivities and short assay times are urgently required for the screening of “zero tolerance” hazardous substances in food. Herein, we propose a fluorescent immunoassay for the highly sensitive and rapid analysis of chloramphenicol (CAP) based on carbon dots (CDs)-encapsulated CaCO 3 nanospheres and magnetic nanoparticles (MNPs). The fluorescent immunoprobes were prepared by coupling the anti-CAP antibodies to carboxymethyl cellulose-functional CDs@CaCO 3 nanospheres. Chitosan-modified MNPs with “core–shell” structures were prepared and then conjugated to the CAP hapten, acting as the nano-carrier and interface for the immunoreaction. With the assistance of MNPs, the established fluorescent immunoassay achieved the sensitive detection of CAP in chicken with a limit of detection of 0.03 μg kg −1 and recoveries ranging from 83.7%–105.0%. The analysis results of the fluorescent immunoassay were evaluated by the enzyme-linked immunosorbent assay, having a correlation coefficient of 0.981. Our work provides a rapid, facile, and reliable strategy for the highly sensitive analysis of food contaminants based on “green” fluorescent nanoprobes.
研究领域:
食品安全检测
·
生物化学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）