ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Yi Shi,Jian Sun,Renhai Wang,Yun Long,Ruilin Wang,Zijian Zhou,Shengan Wu,Xiangkun Elvis Cao,Chuanwen Zhao
The light-absorbing shell-wrapped Ca-based TCES (thermochemical energy storage) pellets are well-suited for volumetric receivers employed in solar-driven CaL (Calcium-Looping) systems. However, shell shedding coupled with the low intrinsic thermal conductivity of the internal core restricts these Ca-based TCES pellets' practicality. In this work, high-temperature Fe-welding is employed to consolidate the light-absorbing shell, while SiC is doped into the interior core to enhance its thermal conductivity. The generation of CaFe 2 O 4 (a readily sinterable phase) from the bimetallic Fe/Mn light-absorbing shell is observed, with this phase serving as a key mediator that reinforces the core-shell interface and thereby suppresses shell shedding efficiently. Doping 4 wt% SiC into the Ca-based interior core facilitates its rapid heating to 1255.8 K in 30 s under concentrated radiation. In contrast, undoped, shell-free pellets only achieve 723.8 K after 70 s, a temperature inadequate for initiating CaCO 3 decomposition under identical flux conditions. Therefore, the innovative design of the Fe/Mn bimetallic shell integrated with a 4 wt% SiC-doped Ca-based core produces a durable TCES pellet. This pellet retains a thermal storage density of 1.03 MJ kg −1 after 29 cycles and achieves an average solar absorptance of 85.29%, thereby qualifying it as a promising candidate for solar-driven CaL systems.
研究领域:
能源材料
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太阳能储能
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热工工程
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无机材料合成
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可持续能源系统
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2024
·
IF 2.6
Ma Xue,Hu Qingqing,Yuan Jingxue,Feng Yao,Cheng Zhengjun
A selective and sensitive fluorescence method for hypochlorite (ClO − ) was designed using glutathione (GSH) modified silicon-doped carbon quantum dots (GSH@Si-CDs). Then a dual emission ratio fluorescence probe (RF-probe) was obtained based on carbodiimide-activated coupling reaction between GSH and Si-CDs. i.e., when the excitation wavelength was kept at 360 nm, the GSH@Si-CDs exhibited strong blue and weak yellow fluorescence at 430 and 580 nm. Meanwhile, the fluorescence of GSH@Si-CDs could be selectively quenched at 430 nm and enhanced at 580 nm in the presence of ClO − , and corresponding limit of detection (LOD) and linear range were measured to be 0.35 µM and 1.0-33.3 µM. The sensing mechanism of the system was also investigated in detail. Moreover, the RF-probe with good accuracy was successfully employed to monitor ClO − in real samples with satisfactory results compared to the standard iodometric method.
研究领域:
分析化学
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材料科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Bio Materials
·
2019
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IF 0
Yuqi Jiang,Yiming Han,Jie Wang,Fang Lv,Zhengfang Yi,Qinfei Ke,He Xu
Insufficient angiogenesis always leads to the prolonged or even nonhealing process for diabetic wounds. Hence, the stimulation of angiogenesis in the wound site is an effective therapeutic strategy for the treatment of diabetic wounds. In this study, we reported a spaced-oriented electrospun scaffold with silicon-doped amorphous calcium phosphate nanocoating on the surface (Si-ACP/PM). The results indicated that the Si-ACP/PM scaffold exhibited an alternately random and aligned microstructure: most of the nanofibers densely deposited in a random manner to form columnar embossments, while others loosely aligned between the embossments to construct a three-dimensional porous microstructure. Furthermore, the Si-ACP nanoparticles with the diameter of about 40 nm were well distributed on the surface of each nanofiber, and the Si ions could sustain release from the scaffold. Results revealed that the Si-ACP/PM scaffold can promote the proliferation and migration of human umbilical vein endothelial cells (HUVECs) in vitro. The in vivo study further demonstrated that the Si-ACP scaffold effectively accelerated the wound healing via the promotion of angiogenesis, collagen deposition, as well as re-epithelialization in the diabetic wound bed. Taken together, the study indicates that the spaced-oriented electrospun scaffold with silicon-doped amorphous calcium phosphate nanocoating on the surface, which could significantly stimulate the angiogenesis during the process of diabetic wound healing, shows great potential for the therapy of diabetic wounds.
研究领域:
材料科学
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生物材料
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组织工程
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糖尿病研究
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伤口愈合
✓ 已验证
产品关联
DOI
PubMed
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Zhi Li,Xu Yu,Ming Jiang,Li Xu
Antibacterial nano agents are promising to avoid drug resistance while exhibiting effective antibacterial functions. In this study, a kind of silicon-doped polymer dots, i.e. Si-PEIPDs, was synthesized from 3-aminopropyl triethoxysilane and polyethyleneimine . The Si-PEIPDs possessed stable blue fluorescence in solution and solid phase. The Si-PEIPDs could entirely inhibit the E. coli and S. aureus at low concentration without any external assistance, and destroying membrane contributed to this effect. Meanwhile, the Si-PEIPDs possessed free radicals scavenging ability, which would be helpful for the healing of the bacterial infected wounds. Additionally, the Si-PEIPDs played the dual role as a capping and reduction agent for the synthesis of gold nanoparticles , forming nanocomposites which exerted a higher catalysis activity in the reduction of 4-nitrophenol to 4-nitroaniline. This work paved a novel avenue for the multiple applications of polymer dots in environmental remediation and medical and health field.
研究领域:
材料科学
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纳米技术
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生物医学工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2018
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IF 7.082
Ge Gao,Yao-Wen Jiang,Hao-Ran Jia,Jingjing Yang,Fu-Gen Wu
In this study, an on-off-on fluorescent nanosensor based on carbon quantum dots (or carbon dots, CDs) was successfully fabricated for Fe 3+ detection and selective imaging of cancerous cells in vitro and in vivo . The multifunctional CDs were prepared by a one-pot solvothermal treatment of glycerol and a silane molecule ( N -[3-(trimethoxysilyl)propyl]ethylenediamine, DAMO). The as-prepared CDs exhibited excellent fluorescence (FL) properties and favorable biocompatibility, and could realize wash-free cell imaging both in vitro (e.g., for bacterial and fungal cells) and in vivo (e.g., for zebrafish embryos). On the other hand, the fluorescence of CDs can respond to Fe 3+ selectively and sensitively, with a very low detection limit of 16 nM. Besides, detection of Fe 3+ in living cells and zebrafish was also successfully realized by the CDs. Moreover, it was found that glutathione (GSH) could enhance the fluorescence of the mixed solution of CDs and Fe 3+ (CDs/Fe 3+ ), and such a property could be utilized to efficiently distinguish cancerous cells from normal ones based on the difference in the content of GSH of the two types of cells. More importantly, GSH also realized the enhanced fluorescence signals of CDs/Fe 3+ in tumor site in vivo after intravenous injection, indicating the potential of CDs/Fe 3+ for imaging-guided precision cancer diagnosis.
研究领域:
纳米技术
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生物医学工程
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分析化学
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癌症生物学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
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IF 7.504
Zhifang Wu,Xiaokan Wang,Zhe Wang,Changyu Shao,Xiaoting Jin,Leiqing Zhang,Haihua Pan,Ruikang Tang,Baiping Fu
Lab biomineralization should be carried out in an actual clinical practice. This study evaluated self-etch adhesive as a carrier for amorphous calcium phosphate (ACP) nanoprecursors to continuously deliver biomimetic remineralization of self-assembly type I collagen and demineralized dentin. Si-containing ACP particles (Si-ACP) stabilized with polyaspartic acid (PAsp) were synthesized and characterized by transmission electron microscopy (TEM), scanning electron microscopy–energy-dispersive X-ray spectroscopy, Fourier transform infrared analysis, X-ray powder diffractometry, and X-ray phototelectron spectroscopy. The biomimetic remineralization of single-layer reconstituted type I collagen fibrils and demineralized dentin was analyzed by using two one-bottle self-etch dentin adhesives (Clearfil S3 Bond (S3), Kurraray-Noritake; Adper Easy One (AEO), 3 M ESPE) as a carrier loaded (or not, in the case of the control) with 25 wt % of Si-ACP particles. In vitro cytotoxicity assessed by the Cell Counting Kit-8 indicated that the Si-ACP particles had no adverse effect on cell viability. The capacity for Ca and P ions release from cured Si-ACP-containing adhesives (S3, AEO) was evaluated by inductively coupled plasma-atomic emission spectrometry, revealing the successively increasing release of Ca and P ions for 28 days. The intra- and extrafibrillar remineralization of type I collagen and demineralized dentin was confirmed by TEM and selected-area electron diffraction when the adhesives were used as a carrier loaded with Si-ACP particles. Therefore, we propose self-etch adhesive as a novel carrier for ACP nanoprecursors to continuously deliver biomimetic remineralization.
研究领域:
牙科材料
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生物材料
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生物矿化
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修复牙科学
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材料科学
✓ 已验证
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 38
·2302831
·
IF 13.3
Tianhao Yao,Hongkang Wang,Xin Ji,Deyu Wang,Qingmiao Zhang,Lingjie Meng,Jian-Wen Shi,Xiaogang Han,Yonghong Cheng
Titanium dioxide (TiO 2 ) is a promising anode material for sodium–ion batteries (SIBs), which suffer from the intrinsic sluggish ion transferability and poor conductivity. To overcome these drawbacks, a facile strategy is developed to synergistically engineer the lattice defects (i.e., heteroatom doping and oxygen vacancy generation) and the fine microstructure (i.e., carbon hybridization and porous structure) of TiO 2 -based anode, which efficiently enhances the sodium storage performance. Herein, it is successfully realized that the Si-doping into the MIL-125 metal-organic framework structure, which can be easily converted to SiO 2 /TiO 2–x @C nanotablets by annealing under inert atmosphere. After NaOH etching SiO 2 /TiO 2–x @C which contains unbonded SiO 2 and chemically bonded Si O Ti, thus the lattice Si-doped TiO 2–x @C (Si-TiO 2–x @C) nanotablets with rich Ti 3+ /oxygen vacancies and abundant inner pores are developed. When examined as an anode for SIB, the Si-TiO 2–x @C exhibits a high sodium storage capacity (285 mAh g −1 at 0.2 A g −1 ), excellent long-term cycling, and high-rate performances (190 mAh g −1 at 2 A g −1 after 2500 cycles with 95.1% capacity retention). Theoretical calculations indicate that the rich Ti 3+ /oxygen vacancies and Si-doping synergistically contribute to a narrowed bandgap and lower sodiation barrier, which thus lead to fast electron/ion transfer coefficients and the predominant pseudocapacitive sodium storage behavior.
研究领域:
材料科学
·
能量存储
·
纳米技术
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）