ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Hongjie Cui,Qiming Zhang,Yuanwu Hu,Chong Peng,Xiangchen Fang,Zhenmin Cheng,Vladimir V. Galvita,Zhiming Zhou
As a potential candidate for precombustion CO2 capture at intermediate temperatures (200–400 °C), MgO-based sorbents usually suffer from low kinetics and poor cyclic stability. Herein, a general and facile approach is proposed for the fabrication of high-performance MgO-based sorbents via incorporation of CaCO3 into MgO followed by deposition of a mixed alkali metal salt (AMS). The AMS-promoted MgO–CaCO3 sorbents are capable of adsorbing CO2 at an ultrafast rate, high capacity, and good stability. The CO2 uptake of sorbent can reach as high as above 0.5 gCO2 gsorbent–1 after only 5 min of sorption at 350 °C, accounting for vast majority of the total uptake. In addition, the sorbents are very stable even under severe but more realistic conditions (desorption in CO2 at 500 °C), where the CO2 uptake of the best sorbent is stabilized at 0.58 gCO2 gsorbent–1 in 20 consecutive cycles. The excellent CO2 capture performance of the sorbent is mainly due to the promoting effect of molten AMS, the rapid formation of CaMg(CO3)2, and the plate-like structure of sorbent. The exceptional ultrafast rate and the good stability of the AMS-promoted MgO–CaCO3 sorbents promise high potential for practical applications, such as precombustion CO2 capture from integrated gasification combined cycle plants and sorption-enhanced water gas shift process.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Nanomedicine
·
2019
·
IF 4.471
Ning Sun,Dou Wang,Guoqiang Yao,Xiaomei Li,Ting Mei,Xinke Zhou,Kwok-Yin Wong,Baishan Jiang,Zhiyuan Fang
Background: The intraoperative visualization of tumor cells is a powerful modality for surgical treatment of solid tumors. Since the completeness of tumor excision is closely correlated with the survival of patients, probes that can assist in distinguishing tumor cells are highly demanded.Purpose: In the present study, a fluorescent probe JF1 was synthesized for imaging of tumor cells by conjugating a substrate of cathepsin B (quenching moiety) to Oregon Green derivative JF2 using a self-immolative linker.Methods: JF1 was then loaded into the folate-PEG modified CaCO3 nanoparticles. The folate receptor-targeted, pH-dependent, and cathepsin B activable CaCO3 nanoprobe was test in vitro and in vivo for tumor imaging.Results: CaCO3 nanoprobe demonstrated good stability and fast lighting ability in tumors under low pH conditions. It also showed lower fluorescence background than the single cathepsin B dependent fluorescent probe. The pH-dependent and cathepsin B controlled “turn-on” property enables precise and fast indication of tumor in vitro and in vivo.Conclusion: This strategy of controlled drug delivery enables in vivo imaging of tumor nodules with a high signal-to-noise ratio, which has great potential in surgical tumor treatment.
研究领域:
生物医学工程
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肿瘤学
·
分子影像学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER BULLETIN
·
2014
·Vol. 71
·期 7
·1857-1873
·
IF 1.491
Shi Jin,Shi Jun,Feng Desheng,Yue Pei,Cao Shaokui
CaCO 3 /aliphatic poly(urethane-amine) (PUA)/sodium polystyrene sulfonate (PSS) hybrid composites with dual-responsive controlled drug delivery property had been prepared via electrostatic interaction. Aliphatic PUA and PSS were employed as smart polyelectrolytes. PSS was also served as crystal growth additive to control the morphology of CaCO 3 microparticles. The electrostatic interaction between PSS and aliphatic PUA under weak-acid condition improved the bonding force between PSS-doped CaCO 3 microparticles and polyelectrolytes. pH-/thermo-responsive drug delivery property and the high drug loading capacity (around 90 %) could be achieved from the prepared hybrid composites. More importantly, the relative content of CaCO 3 microparticles and polyelectrolytes had a significant effect on the morphology and controllable release properties of the hybrid composites. The smart drug release mechanism of the hybrid composites was also analyzed by fitting the cumulative release data to Retger–Peppas equation.
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Weihao Jin,Yujia Wu,Wanzhen Li,Jun Wang,Kai Yang,Ping Song,Longbao Zhu,Weiwei Zhang,Lin Gui,Fei Ge
Wound infections affect the health of nearly 300 million people worldwide, and biofilm formation is a major factor that contributes to their persistence. In this study, we designed a combined photothermal therapy (PTT)/photodynamic therapy (PDT)/nitric oxide (NO) antibacterial nanoplatform (MSC@CaCO3). First, photothermally responsive molybdenum disulfide (MoS2) nanospheres (90–110 nm) were prepared, then sodium nitroxide alginate (SANO) and dihydroporphyrin e6 (Ce6) were attached to allow the release of NO and reactive oxygen species (ROS) in response to illumination. While acid-sensitive calcium carbonate comes into contact with the microacidic environment of biofilm, it will crack and release drugs, and free Ca2+ can assist sodium alginate (SA) to promote wound healing. The results showed that the photothermal conversion efficiency of the nanoplatform was 48.9%. The bacterial inhibition rates of MSC@CaCO3 for multidrug-resistant (MDR) Escherichia coli (E. coli) and MDR Staphylococcus aureus (S. aureus) were both more than 96%. MSC@CaCO3 also showed effective inhibition for the growth of drug-resistant bacterial biofilm. A single-factor experiment was carried out to assess the bacterial inhibition efficiency by PTT or PDT. The mouse wound infection model recovered after 10 days of treatment by MSC@CaCO3 under illumination. The toxicity assay demonstrated that the nanoplatform had no significant toxicity. In conclusion, the prepared MSC@CaCO3 nanoplatform can effectively utilize the characteristics of the biofilm microenvironment to confer protection against drug-resistant bacterial infections and promote wound healing. This study provides a basic reference for the application of cost-effective and multifunctional nano-anti-infective drugs.
研究领域:
生物医学工程
·
纳米医学
·
感染性疾病
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 48
·20999-21006
·
IF 3.288
Junda Wu,Atian Xie,Jin Yang,Jiangdong Dai,Chunxiang Li,Yongsheng Yan,Jiuyun Cui
In order to solve urgent environmental problems caused by oil spills, it is meaningful and necessary to develop novel materials or techniques for efficient oil/water separation. Here, a new polyvinylidene fluoride (PVDF)-based composite membrane was successfully fabricated via a layer-by-layer self-assembly process, where the active sites were provided by pDA for the CaCO3 growth. Importantly, the CaCO3 structure could be regulated by the concentration of the precursor solution, showing the high flexibility of preparation. The as-prepared PVDF@pDA@CaCO3 membrane possessed superhydrophilic/underwater superoleophobic property and superior anti-fouling ability. In addition, the optimal PVDF@pDA@CaCO3-2 membrane showed a high permeation flux only under gravity, and the separation efficiency was as high as 99%. With the merits of low-cost and great separation performance, the as-prepared PVDF@pDA@CaCO3 membrane exhibited great potential in practical industrial applications for highly efficient oil/water emulsion separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Jin Yang,Jiuyun Cui,Atian Xie,Jiangdong Dai,Chunxiang Li,Yongsheng Yan
The oily wastewater has been widely concerned owing to growing industrial wastewater and marine pollution. Herein, a cellulose-based oil/water separation membrane was fabricated using a very simple alternating soaking process (ASP). First, the sodium alginate was coated on the cellulose membrane surface (filter paper), and then CaCO 3 particles were assembled onto the membrane surface through ASP, finally we can get the superhydrophilic/underwater superoleophobic cellulose membrane (FP@SA/CaCO 3 ) for oil/water separation. The underwater oil contact angle (OCA) of FP@SA/CaCO 3 is 151.1°, which indicated that FP@SA/CaCO 3 has good underwater superoleophobicity. Moreover, for different oil/water mixtures, the FP@SA/CaCO 3 membrane has outstanding separation efficiency of over 99.2 % and the flux of over 400 L m −2 h −1 . Besides, even after 20 reuse, FP@SA/CaCO 3 still showed a high flux and separation efficiency, indicating FP@SA/CaCO 3 has good reusability. The FP@SA/CaCO 3 membrane with low cost and high performance shows a good application market for oily wastewater remediation in the future.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CORROSION SCIENCE
·
2024
·
IF 7.4
Youqing Li,Ruiqing Hou,Pingli Jiang,Ke Li,Jun Wang,Di Mei,Lihong Wu,Shijie Zhu,Regine Willumeit-Rőmer,Shaokang Guan
Rapid degradation of magnesium (Mg) alloys and slow osteogenesis surrounding implants greatly limit their clinical applications. In present study, influence of BSA on the characteristics of CaCO 3 coating on MgZnCa alloy was investigated to adjust the degradation behaviors of Mg alloy and cell response to the coating. BSA can regulate the crystalline and the particle size of CaCO 3 in the coating and deteriorate coating stability and thickness, thereby leading to a tunable corrosion resistance for CaCO 3 @BSA coatings. Moreover, the presence of BSA bestows more suitable composition, roughness and wettability on cells with a better osteogenic performance on the coating.
研究领域:
材料科学
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生物医学工程
·
骨科
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2012
·
IF 3.456
Ping Liang,Dong Zhao,Chao-Qun Wang,Jing-Yi Zong,Ren-Xi Zhuo,Si-Xue Cheng
A facile method to prepare inorganic/organic hybrid heparin/CaCO 3 /CaP nanoparticles for drug delivery was developed. The heparin/CaCO 3 /CaP nanoparticles were prepared by the co-precipitation of Ca 2+ ions with carbonate and phosphate ions in the presence of heparin. The effects of ion concentrations on the particle size and properties of the nanoparticles were investigated. The dynamic light scattering (DLS) particle size analysis and scanning electron microscopy (SEM) observation showed that the mean size of the hybrid nanoparticles could be controlled at less than 50 nm in the dried state through adjusting the concentrations of the inorganic ions. Fourier transform infrared (FTIR) spectroscopy indicated that the crystallization of CaCO 3 could be suppressed with the presence of phosphate ions in the co-precipitation system. X-ray photoelectron spectroscopy (XPS) showed that the heparin content in the surface layer of heparin/CaCO 3 /CaP hybrid nanoparticles decreased with the increasing ion concentrations during the nanoparticle preparation. The drug loading and release properties of the hybrid nanoparticles with different sizes and different compositions were studied. The in vitro cellular cytotoxicity indicated that blank hybrid nanoparticles had good biocompatibility, whereas doxorubicin hydrochloride (DOX) loaded nanoparticles exhibited a strong cell inhibition effect, indicating that the heparin/CaCO 3 /CaP hybrid nanoparticles could be promising carriers for drug delivery.
研究领域:
材料科学
·
药学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2019
·
IF 4.914
Xuejuan Cao,Huai Liu,Junnan Wei,Xing Tang,Xianhai Zeng,Yong Sun,Tingzhou Lei,Geng Zhao,Lu Lin
The production of γ-valerolactone (GVL) from lignocellulosic biomass has become a focus of research owing to its potential applications in fuels and chemicals. In this study, ( n )CuO x -CaCO 3 (where n is the molar ratio of Cu to Ca) compounds were prepared for the first time and shown to function as efficient bifunctional catalysts for the conversion of biomass-derived methyl levulinate (ML) into GVL, using methanol as the in-situ hydrogen source. Among the catalysts with varied Cu/Ca molar ratios, (3/2)CuO x -CaCO 3 provided the highest GVL yield of 95.6% from ML. The incorporation of CaCO 3 with CuO resulted in the formation of Cu + species in a CuO x -CaCO 3 catalyst, which greatly facilitated the hydrogenation of ML. Notably, CuO x -CaCO 3 also displayed excellent catalytic performance in the methanolysis products of cellulose, even in the presence of humins. Therefore, a facile two-step strategy for the production of GVL from cellulose could be developed over this robust and inexpensive catalyst, through the integration of cellulose methanolysis catalyzed by sulfuric acid, methanol reforming, and ML hydrogenation in methanol medium.
研究领域:
化学工程
·
可再生能源
✓ 已验证
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
Qibin Zhu,Yimin Xuan,Xianglei Liu
The CaCO 3 /CaO based thermochemical system has great potential in Concentrating Solar Power (CSP) plants. However, the CaCO 3 suffers from high sintering speed, poor thermal conductivity , and weak light absorption, which is not conducive to being directly driven by solar energy. Herein, The Mn and Cr elements were doped into CaCO 3 through the sol-gel method. The synergistic effect between the two elements can maintain the storage density at 1057.3 kJ/kg after 20 cycles at 800 °C. The light absorption under AM 1.5G spectrum was obviously improved to 64.5% and reached 73.3% after 20 cycles. To further improve the thermal conductivity of the composite, the tetrapod-shaped zinc oxide whiskers (TZnO) were directly mixed into the composite. The TZnO acts as the thermal conductance bridge in the composites and can retain its original morphology at high temperatures without reacting with CaCO 3 . When 5% mole ratio of TZnO was added to the Cr/Mn doped CaCO 3 , the thermal conductivity increased by 17.8%. Through the non-isothermal analysis of the reaction kinetics, it is found that the addition of TZnO can effectively accelerate the reaction, especially at a higher heating rate, which is very beneficial to direct solar-driven applications. The optimized composites showed excellent properties in light absorption, sintering resistance, thermal conductivity, and reaction kinetics, which can guide the direct photothermal utilization of CaCO 3 .
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2022
·
IF 3.841
Tian Sang,Yan Zhong,Dian-Hui Wang,Chao-Hao Hu,Jun-Chen Ye,Wen-Yi Wang,Hao Liu
To expand the range of application of insulating calcium carbonate (CaCO 3 ), we combined CaCO 3 with narrow bandgap cadmium sulfide (CdS) with the chemical precipitation method and characterized the composite through X-ray powder diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The photocatalytic activities of composite catalysts with different molar ratios on Cr 6+ are further investigated and compared. The materials showed good photocatalytic reduction effect on Cr 6+ under visible light. At the same time, the catalysts have good catalytic performance and service life, far exceeding pure CdS. The behavior of photogenerated carriers and free radicals in photocatalytic reduction processes were explored with a trapping agent experiment, and the mechanism that enhances catalytic activity in the CaCO 3 composite catalyst was revealed. Overall, results show that CaCO 3 has great potential as a photocatalyst.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xinzhou Wang,Longchao Ma,Xuqin Xie,Zhaoyang Xu,Chayanoot Kositanont,Chotiros Dokkhan,Yan Yao,Yanjun Li
The flattened bamboo board (FB) has garnered widespread attention recently due to its ability to enhance bamboo utilization and reduce adhesive consumption. However, FB is primarily composed of three macromolecules: cellulose, hemicellulose, and lignin, making it a flammable material. Meanwhile, FB lacks lateral cell tissues, and its relatively low permeability poses challenges for flame-retardant modification. This work introduces an “H 2 O 2 pretreatment-vacuum impregnation-curing” strategy to fabricate the fireproofing of a superior CaCO 3 -mineralized flattened bamboo board (CaCO 3 -FB). The results indicate that H 2 O 2 pretreatment not only enhances the liquid permeability of FB but also maintains a lignin retention rate as high as 69.1 %. The partial retention of lignin, which has a bonding effect, preserves the structural integrity of FB. Cone calorimetry tests show that CaCO 3 -FB significantly reduces peak heat release rate (PHRR), total heat release (THR), peak smoke production rate (PSPR), and total smoke production (TSP) by 34.6 %, 52.9 %, 22.2 %, and 53.6 %, respectively. Overall, the production of flame-retardant FB is successfully achieved through the partial retention of lignin and mineralization of CaCO 3 , which holds great potential to drive significant advancements in the bamboo industry.
研究领域:
材料科学
·
林业工程
✓ 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）