SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
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IF 7.267
Jingjing Zhu,Can Gao,Fanhe Kong,Kai Zhang,Zhiqing Bai,Jiansheng Guo
The combination of thermal energy storage (TES) unit and solar air heater is one of the most efficient methods for long-term utilization of solar energy. In this study, a series of stable SrCl 2 @SG composite sorbents were prepared based on silica gel (SG) pellets and strontium chloride hexahydrate (SrCl 2 ·6H 2 O) to store low-grade solar thermal energy for space heating application. Composite characteristics, kinetic hydration/dehydration performance of SG and SrCl 2 @SG sorbents were thoroughly studied. Results demonstrated that the SrCl 2 @SG_10 sorbent has the largest sorption capacity of 0.34 g/g at the temperature of 25 °C and relative humidity (RH) of 90% without any liquid leakage . Additionally, kinetic hydration experiments showed that RH has a great impact on the water sorption performance of the TES materials , while the temperature effect is relatively insignificant. The TES performance of sorbents was further investigated in a laboratory prototype reactor with a multilayer structure, which was designed following an open sorption system concept. 800 g of sorbent pellets were evenly distributed on each layer of the sieve. Maximum instant output power and energy storage density of the SrCl 2 @SG_10 sorbent at 70% RH are 19.7 W and 100 kWh/m 3 respectively. Furthermore, the open TES system still maintains a comparatively high TES performance after fifteen charging/discharging cycles.
研究领域:
材料科学
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可再生能源工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
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IF 8.456
Shurong Wang,Hui Cao,Xuhao Liu,Yangyang Liu,Tao Tao,Jinwei Sun,Mingdao Zhang
Industrialization of perovskite solar cells is constrained by adverse stability in the air. Herein, we report effective strontium chloride (SrCl2) passivation upon HC(NH2)2–CH3NH3 (FA–MA)-based perovskite thin films for the suppression of nonradiative recombination. Moreover, the recombination dynamics, crystallinity, carrier transport, morphology, and the elemental stoichiometry of this film were systematically studied. By optimizing the concentration of SrCl2, the corresponding devices exhibited an increased open-circuit voltage (1.00 V vs 1.09 V), consistent with the enhanced photoluminescence lifetime. The champion passivated device showed an ascendant power conversion efficiency (PCE) about 21.11%, with over 90% retention of the primal PCE in dry air after 1000 h of aging with 20–30% humidity. A superior stability and an accelerated electron/hole-extraction ability were further observed by time-resolved photoluminescence spectroscopy.
研究领域:
材料科学
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太阳能
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半导体物理
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DOI
高影响因子
Journal of Materials Chemistry B
·
2019
·Vol. 7
·期 15
·2463-2473
·
IF 5.047
Fenbo Ma,Yongmei Ge,Nian Liu,Xiangchao Pang,Xingyu Shen,Bin Tang
A composite hydrogel with tunable mechanical properties has been fabricated and characterized in this study. We investigated its swelling degree, morphology, structure and thermal stability. Moreover, the effect of strontium chloride concentration on both the dynamic rheology and nanomechanical properties of the composite hydrogels was confirmed in this work. To eliminate the viscoelastic influences of hydrogels during nanomechanical tests, we first analyzed the elastic modulus of strontium alginate (Alg-Sr) and strontium alginate/chondroitin sulfate (Alg/CS-Sr) hydrogels via atomic force microscopy (AFM) using the rate-jump method. Chondrocytes were cultured with the Alg-Sr and Alg/CS-Sr hydrogels respectively. Cell viability assay reveals that the Alg/CS-Sr hydrogel possesses good cytocompatibility. Flow cytometry, qPCR and western blotting analysis suggest that the Alg/CS-Sr hydrogel exerts a positive effect on the inhibition of apoptosis and may exert anti-inflammatory effects in articular cartilage related applications. Furthermore, the preliminary in vivo study shows that the Alg/CS-Sr composite hydrogel facilitates the repair of cartilage in rabbit cartilage defect. Taken together, it is indicated that the Alg/CS-Sr composite hydrogel might be a promising scaffold to promote the repair of cartilage defects.
研究领域:
生物材料
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组织工程
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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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2025
·
IF 3.5
Xiaoliang Gou,Maobiao Ran,Shunzhang Chen,Yi Liu,Guoqing Gu,Xiaoyan Shu,Fen Luo,Congcong Ding,Xirui Lu
Safe management of chloride-rich radioactive salt waste produced during molten-salt dry reprocessing of spent nuclear fuel is essential for the sustainable deployment of advanced nuclear energy systems. Although 90 SrCl 2 represents only a minor mass fraction, its high specific activity and decay heat dominate short-term thermal management. In this work, a low temperature hydrothermal synthesis of Sr 5 (PO 4 ) 3 Cl effectively immobilized Sr and about 10 % of Cl, while the remaining Cl was released as NaCl. Over a 10-h hydrothermal process, the step-like growth of crystalline and partially disordered domains promotes enhanced crystallinity and increased particle size of the Sr 5 (PO 4 ) 3 Cl solidified form, thereby improving its chemical durability. The well-crystallized product exhibits a mass loss of less than 1.8 wt .% at 1000 °C, and normalized leach rate of Sr 2+ is 3.5 × 10 −6 gm −2 d −1 after 28 d in deionized water at 90 °C. Reliable thermal and chemical stability confirm that low-temperature hydrothermal processing is an energy-efficient strategy for conditioning 90 SrCl 2 chloride wastes prior to geological disposal.
研究领域:
核废料管理
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材料科学
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放射化学
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环境修复
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无机合成
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Arif Hussain,Suibin Luo,Jawaria Jawaid,Tengyu Li,Junyi Yu,Pengpeng Xu,Zijun Wang,Shuhui Yu
Ferroelectric polymer composites with nonlinear dielectric properties are promising candidates for flexible electronics and microwave systems. However, their high-bias field requirements hinder broader applicability. Here, we report a low-voltage tunable nanocomposite comprising (3-aminopropyl)triethoxysilane (APTES)-functionalized core–shell nanoparticles with a Barium Strontium Titanate (BST) core and ZnO shell, embedded in a poly(vinylidene fluoride-tetrafluoroethylene) (P(VDF-TrFE)) matrix. The synergistic combination of high-k BST and intrinsically nonlinear ZnO enables a dielectric tunability (Tu) of 12.27% at 6.67 kV mm−1, four times higher than BST/P(VDF-TrFE) counterpart (3.09%). APTES functionalization enhances filler–matrix interfacial compatibility and suppresses the dielectric loss (tan δ) from 0.123 to 0.038 (3.24 times) at 100 Hz. Notably, the nanocomposites exhibit a rare temperature-dependent transition in the Tu curve, transitioning from negative to positive Tu with a switching temperature of 20 °C (close to room temperature) for the APTES functionalized system. This study introduces a viable route to engineer low-voltage, temperature-adaptive dielectric materials for next-generation tunable microwave and RF device applications.
研究领域:
材料科学
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纳米技术
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高分子科学
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电气工程
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微波工程
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jingzhen Su,Yong Wang,Cong Li,Zhengming He,Kai Zhang,Mingqiang Ren,Qile Wang,Tianxing Chen,Jibran Ali Ghumro,Virender K. Sharma,Hyunook Kim,Yunshu Zhang
Natural seawater contains abundant halide ions that remain largely untapped, while peracetic acid often requires activation to enhance its oxidative properties. The interaction mechanisms between these components have not been thoroughly investigated. This study investigated the activation effect of high concentrations of Cl − and Br⁻ coexisting in seawater on PAA by adding PAA to seawater. Quenching experiments, along with Electron Paramagnetic Resonance (EPR) spectroscopy and UPLC-TQ-MS, were conducted to determine the reaction mechanism and degradation process of SMX. Seawater systems containing 35 ‰ salinity or Br − -PAA systems (0.5 mM Br − ) degraded 100 % SMX within 10 min or 12 min, respectively ( k obs =0.4873 min⁻ 1 or 0.3581 min⁻ 1 ). While the Cl − -PAA system, though slower, still degraded 97.7 % within 180 min (300 mM Cl − , k obs =0.0173 min⁻ 1 ). SMX degradation rates remained above 95 % across the pH range of 3–9, with optimal performance at pH= 3. However, the presence of HA inhibited SMX degradation efficiency by over 40 %. Results indicate that SMX degradation efficiency correlates positively with Cl⁻/Br⁻ content and PAA concentration. The superior removal efficiency stems from activated PAA not only generating HOCl and HOBr via oxygen atom transfer but also further producing 1 O 2 , which dominates the non-selective degradation process. This approach adapts to a wide pH range but is consumed by coexisting HA. The superiority of the Br − -PAA system over Cl − -PAA stems from the strong oxidizing power of HOBr. The oxidation pathways include halogenation, bond cleavage, and hydroxylation. ECOSAR predictions indicated that most transformation products exhibited higher toxicity than the parent SMX compound.
研究领域:
环境化学
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水处理技术
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氧化过程
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污染物降解
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海洋环境工程
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Cailin Yang,Qiuyu Mei,Haipu Li,Zhian Wang,Hua Wan,Kai Han
We developed electrospun MXene/PAN nanofiber membranes (EMPs) for efficient photothermal interfacial evaporation (PIE) in radioactive wastewater treatment. Ti3C2Tx nanosheets were uniformly intercalated into the PAN matrix during electrospinning, improving membrane stability and durability. We used the CIE Lab color space to analyze the relationship between membrane color and solar absorption, and the EMP membrane showed a strong average light absorption of 92.7%. A two-dimensional (2D) water transport structure was employed to improve water supply during evaporation. As a result, the EMP evaporator reached a high evaporation rate of 1.96 kg·m–2·h–1 and a photothermal conversion efficiency of 91.34%. The membranes also exhibited excellent nuclide rejection of I–, Cs+, Sr2+, and Co2+ and showed a self-cleaning effect as surface salts redissolved during dark periods. This work highlights the potential of combining material design and water management for solar-driven radioactive wastewater purification.
研究领域:
材料科学
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环境工程
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核工程
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纳米技术
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化学工程
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产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2025
·
IF 3.3
Tao Zhao,Xue Wang,Jiacheng Li,Chunqi Wang,Aziz Bakhtiyarovich Ibragimov,Junkuo Gao,Xiaogang Yang
Efficient extraction of uranyl ions from seawater is crucial for the commercialization of nuclear technology. Metal-organic frameworks (MOFs), with their superior uranium extraction properties, face challenges in large-scale applications due to their powdery nature and the difficulty of assembling them into mechanically stable macroscopic composites. To address this, successfully synthesized 90 wt% nanoMOF (aluminum fumarate) loaded directional aerogels (AlFA-3-10) using polyvinyl alcohol (PVA) as an adhesive, which demonstrates robust strength longitudinally and transversely. Our uranium adsorption experiments reveal that at a pH of 8 (akin to that of seawater), the AlFA-3-10 achieves a maximum adsorption capacity of 1146.25 mg g-1, maintaining this exceptional performance over five cycles. Notably, in simulated seawater, AlFA-3-10 exhibits high selectivity for uranyl ions with minimal interference from other ions. The directional pores within AlFA-3-10 facilitate fluid transmission and exchange, ensuring optimal contact between the MOF and uranyl ions, thereby enhancing electrostatic attraction and electron transport for improved capture efficiency. This streamlined approach maximizes the intrinsic potential of nano-MOFs and heralds a new era for their integration into macroscopic composite materials.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2025
·Vol. 15
·期 1
·1-13
·
IF 3.9
Zhang Yongheng,Liu Lvhua,Li Mengqi,Wang Shufu,Fu Jingjing,Yang Mingyuan,Yan Chunxi,Liu Ying,Zheng Yanyan
Polyetheretherketone (PEEK) is widely used in orthopedic and dental implants due to its excellent mechanical properties, chemical stability, and biocompatibility. However, its inherently bioinert nature makes it present weak osteogenic activity, which greatly restricts its clinical adoption. Herein, strontium (Sr) is incorporated onto the surface of PEEK using mussel-inspired polydopamine coating to improve its osteogenic activity. X-ray photoelectron spectroscopy and ion release assay results confirm that different concentrations of Sr are incorporated onto the PEEK substrate surfaces. The strontium-modified PEEK samples show a stable Sr ion release in 35 days of detection. Better results of MC3T3-E1 pre-osteoblasts adhesion, spreading, and proliferation can be observed in strontium-modified PEEK groups, which demonstrates strontium-modified PEEK samples with the improved MC3T3-E1 pre-osteoblasts compatibility. The boosted osteogenic activity of strontium-modified PEEK samples has been demonstrated by the better performed of ALP activity, extracellular matrix mineralization, collagen secretion, and the remarkable up-regulation of ALP, OCN, OPN, Runx2, Col-I, BSP, and OSX of the MC3T3-E1 pre-osteoblasts. Additionally, the strontium-modified PEEK samples exhibit a dose-dependent enhancement of osteoblasts compatibility and osteogenic activity, and the PEEK-Sr10 group shows the best. These findings indicate that strontium-decorated PEEK implants show promising application in orthopedic and dental implants.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Regenerative Biomaterials
·
2024
·
IF 5.6
Ji Minrui,Yuan Zaixin,Ma Hongdong,Feng Xian,Ye Cong,Shi Lei,Chen Xiaodong,Han Fei,Zhao Caichou
The management of full-thickness skin injuries continues to pose significant challenges. Currently, there is a dearth of comprehensive dressings capable of integrating all stages of wound healing to spatiotemporally regulate biological processes following full-thickness skin injuries. In this study, we report the synthesis of a dandelion-shaped mesoporous strontium-gallium microparticle (GE@SrTPP) achieved through dopamine-mediated strontium ion biomineralization and self-assembly, followed by functionalization with gallium metal polyphenol networks (MPNs). As CroCfunctional wound dressing, GE@SrTPP can release bioactive ions in a spatiotemporal manner akin to dandelion seeds. During the early stages of wound healing, GE@SrTPP demonstrates rapid and effective hemostatic performance while also exhibiting antibacterial properties. In the inflammatory phase, GE@SrTPP promotes M2 polarization of macrophages, suppresses the expression of pro-inflammatory factors, and decreases oxidative stress in wounds. Subsequently, during the stages of proliferation and tissue remodeling, GE@SrTPP facilitates angiogenesis through the activation of the HIF-1α/VEGF pathway. Analogous to the dispersion and rooting of dandelion seeds, the root-like new blood vessels supply essential nutrients for wound healing. Ultimately, in a rat chronic wound model, GE@SrTPP achieved successful full-thickness wounds repair. In summary, these dandelion-shaped GE@SrTPP microparticles demonstrate comprehensive regulatory effects in managing full-thickness wounds, making them highly promising materials for clinical applications.
研究领域:
材料科学
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生物医学工程
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伤口愈合
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生物材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
·
2024
·
IF 3.9
Xiulin Shu,Junda Liao,Qian Wang,Lingling Wang,Qingshan Shi,Xiaobao Xie
The increasing prevalence of implant-associated infections (IAI) in orthopedics remains a public health challenge. Calcium phosphates (CaPs) are critical biomaterials in dental treatments and bone regeneration. It is highly desirable to endow CaPs with antibacterial properties. To achieve this purpose, we developed a photocrosslinked methacrylated alginate co-calcium phosphate cement (PMA-co-PCPC) with antibacterial properties, using α-tricalcium phosphate (α-TCP) powders with 16% amorphous contents as solid phase, liquid phases containing CuCl 2 and SrCl 2 as an inhibitor, and CaCl 2 as an activator to construct PCPC. When CaCl 2 started to activate the hydration reaction, Sr 2+ or Cu 2+ ions were exchanged with Ca 2+ , and α-TCP dissolution was restarted and gradually hydrated to form calcium-deficient hydroxyapatite (CDHA). PMA was added to crosslink with Cu/Sr ions and form gel-layer-wrapped hydrated CDHA. This study explored the binding mechanism of PMA and PCPC and the ion release rule of Ca 2+ → Sr 2+ /Cu 2+ , optimized the construction of several antibacterial PMA-co-PCPC materials, and analyzed the physical, chemical, and biological properties. Because of the combined effect of Cu and Sr ions, the scaffold exhibited a potential antibacterial activity, promoting bone formation and vascular regeneration. This work provides a basis for designing antibacterial calcium phosphate biomaterials with controllable treatment, which is an important characteristic for preventing IAI of biomaterials.
研究领域:
生物材料学
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骨科医学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2024
·
IF 6.9
Dongjun Chen,Juan Liu,Zhen Qian,Yunpeng Xiao,Yifan Liu,Yuancai Lv,Xiaoxia Ye,Chunxiang Lin
In the wake of the 2011 Fukushima nuclear disaster, the presence of radioactive cesium ( 137 Cs) in nuclear wastewater has posed a critical and enduring health risk. Addressing this challenge, we have synthesized a gelatin aerogel, denoted as KCuFC/GA, immobilized with potassium cupric ferrocyanide (KCuFC) through an in situ approach, aiming for the efficient extraction of 137 Cs from aqueous environments. This novel aerogel's rich porous structure enhances the accessibility of adsorption sites, thereby significantly promoting the capture of Cs + . The adsorption of cesium onto KCuFC/GA was investigated under various experimental conditions, including initial solution pH, contact time, initial cesium concentration, and the presence of coexisting ions (K + , Na + , Ca 2+ , Mg 2+ , Sr 2+ ). The results indicated that the adsorption performance was largely independent of pH, achieving a high cesium removal rate of 93.4 % within the first 5 minutes. The cesium adsorption data were well-described by the Langmuir adsorption model, indicating a maximum adsorption capacity of 222.22 mg·L −1 . Furthermore, in the presence of various competing ions, KCuFC/GA has demonstrated unparalleled selectivity for Cs + , with a partition coefficient ( K d ) of 2.49 × 10 5 mL·g −1 , and has sustained its adsorptive properties across five cycles of use. Through systematic investigation, including X-ray photoelectron spectroscopy (XPS) analysis, we have elucidated the adsorption mechanism, highlighting the pivotal role of ion exchange between lattice K + and Cs + . The straightforward fabrication process and the aerogel's robust cesium removal capabilities from complex solutions indicate that KCuFC/GA is a promising candidate for real-world applications in the treatment of radioactive wastewater.
研究领域:
环境科学
·
材料科学
·
核能工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）