ENERGY AND BUILDINGS
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2025
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IF 7.1
Feng Zhang,Junru Guo,Juanjuan Su,Jian Han
Passive daylight radiative cooling (PDRC) is an eco-friendly and advantageous alternative to electric building cooling that can tackle global warming and minimize energy consumption. Hybridized micro-nanorods of TiO 2 (TNr), which possessed simultaneous favorable solar reflectance and UV photocatalysis, were fabricated and modified by utilizing 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDTS). It was homogeneously dispersed in a polyvinylidene difluoride (PVDF) precursor solution for spraying processing. A multitude of crosslinked network-like papillae and porous structure was constructed on the PVDF/F-TNr coating. The coated glass fiber textile exhibited a solar reflectance of 94.0 % and an atmospheric window emittance of 92.5 %. The outdoors radiative cooling testing was conducted and a maximum daytime cooling effect of 12.2 °C was realized. The rough porous structure jointly constructed by PVDF and F-TNr endowed the coated textile with favorable superhydrophobicity and photocatalytic properties. The coated glass fiber textile also possessed outstanding self-cleaning and antimicrobial properties, highlighting the potential for building cooling applications.
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Environmental Technology & Innovation
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2025
·
IF 7.1
Minghua Liu,Ran Bi,Guang Wang,Donghui Han,Zhuang Wang,Juan Wu,Ping Ding,Ye Wu,Shou Yang,Qi Yu
The widespread use of titanium dioxide (TiO 2 NPs) and zinc oxide nanoparticles (ZnONPs) in sunscreens necessitates a deeper understanding of their size-dependent aquatic toxicity and interaction mechanisms. This study systematically evaluates the individual and combined effects of TiO 2 NPs (5-10, 40, 100 nm) and ZnONPs (30, 50, 90 nm) on Chlorella vulgaris , integrating physicochemical behavior, oxidative stress responses, and interaction effects. ZnONPs exhibited 5.0–12.6 times higher toxicity than TiO 2 NPs, with EC 50 values of 55.9–77.0 mg L -1 for ZnONPs versus 385.8–704.3 mg L -1 for TiO 2 NPs. Smaller TiO 2 NPs (5–10 nm) showed greater toxicity ( EC 50 = 385.8 mg L -1 ) than larger ones (704.3 mg L -1 for 100 nm), while larger ZnONPs (90 nm) released 40% more Zn 2+ ions than smaller ones (20% for 30 nm). Joint toxicity presented was antagonistic at high concentrations but synergistic at low ( EC 5 ) and environmental levels ( p < 0.05). Small-sized mixtures (10 nm TiO 2 NPs + 30 nm ZnONPs) and large-sized mixtures (100 nm TiO 2 NPs + 90 nm ZnONPs) elevated malondialdehyde (MDA) levels by 1.8-fold compared to individual treatments. After 48 h depuration, reductions in MDA and superoxide dismutase (SOD) activities suggested cellular self-recovery, except the medium-sized mixtures remained persistent reactive oxygen species (ROS) depletion and impaired enzymatic recovery at specific concentration levels. These results provide new insights into nanoparticle toxicity mechanisms, underscoring that synergistic effects at environmentally realistic concentrations (ng L -1 to μg L -1 ) may pose unanticipated ecological risks to primary producers and disrupt aquatic food webs.
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MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 9
·1-8
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IF 5.479
Fang Dandan,Zhang Shupei,Dai Hong,Li Xiuhua,Hong Zhensheng,Lin Yanyu
An ultrasensitive competitive-type electrochemiluminescence immunoassay for the mycotoxin zearalenone is described. The method is based on the use of (a) a mimotope peptide that was selected from a phage displayed peptide library and used to substitute ZEN for designing the competitive assay; (b) NiFe 2 O 4 nanotubes with large specific surface area loaded with the ECL probe Ru(bpy) 3 2+ ; and (c) poly(vinylpyrrolidone) (PVP)-assisted synthesis of TiO 2 mesocrystals that acts as the sensing platform and support for antibody immobilization. Under the optimized conditions and at an ECL working potential of 1.1 V, a linear response is found for ZEN in the 0.1 to 1.0 × 10 −5 ng·mL −1 concentration range with a detection limit as low as 3.3 fg·mL −1 .
An ultrasensitive competitive-type electrochemiluminescence (ECL) immunosensor based on mimotope peptide was constructed for the detection of Zearalenone.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Jinxin Chen,Cheng Zhang,Jiani Liu,Lunyan Wang,Ying Gu,Yaguang Yun,Kun Ge
Developing stable, noble-free SERS substrates with high selectivity and reproducibility remains a major analytical challenge. Herein, a novel noble-free substrate of TiO 2 decorated flower-like 2H-MoS 2 (2H-MoS 2 /TiO 2 ) heterostructure was fabricated for sensitive and selective analysis of mercury ion (Hg 2+ ) in environmental water, demonstrating high potential for monitoring real water samples following standard pretreatment. The 2H-MoS 2 /TiO 2 heterostructure can be simply prepared by two-step hydrothermal method, as well as exhibiting high SERS activity with low minimum detectable concentration (1.0 μg/L) and promising enhancement factor (about 10 5 ) for Rhodamine 6G and derivatives. The good Raman enhancement attributes to multiple synergistic effect of high adsorbability of 2H-MoS 2 /TiO 2 , molecular resonance and significant charge transfer effect, which was investigated by experiments and density functional theory simulations. The indirect analytical method for Hg 2+ based on good SERS activity and specificity of R-NH 2 for Hg 2+ was established. The low limit of detection (0.16 μg/L) with linearity of 0.5 μg/L–1.0 mg/L for Hg 2+ can be obtained. The recoveries of Hg 2+ in environmental water is 82.3–106.7 % with low relative standard deviations of 2.1–6.3 %. More than just a high-performance substrate, this work provides a general design strategy for constructing stable and practical noble-free heterojunctions, significantly advancing the development of reliable SERS methodologies for on-site environmental analysis.
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ACS Nano
·
2025
·
IF 16
Weihao Zhu,Yabing Sun,Kaiwei Xu,Chaoxiang Xie,Ming Yang,Yonglong Ye,Jiayong Luo,Haijing Cui,Liangxue Lai,Tianxiang Chen,Xuehua Ma,Jie Lin,Wenzhi Ren,Aiguo Wu
The clinical translation of inorganic sonosensitizers for cancer sonodynamic therapy (SDT) is constrained by two interconnected barriers: insufficient therapeutic efficacy due to low reactive oxygen species (ROS) yield and long-term toxicity risks due to poor metabolic clearance. Although conventional ultrasmall size designs achieved renal clearance, they reduce the sonosensitizers’ accumulation in the tumor and further weaken treatment outcomes. To address these challenges, we developed a tumor microenvironment (TME)-responsive Mn-doped TiO2–x nanoplatform (2.4 nm). Optimal Mn doping induced defect-mediated bandgap narrowing, generating oxygen vacancies and intermediate states that reduced the TiO2 bandgap from 3.20 to 2.30 eV, thereby enhancing sonosensitivity. Simultaneously, Mn2+-driven Fenton-like catalysis exploited elevated H2O2 levels to generate O2 in the TME, alleviating tumor hypoxia while amplifying ROS production. Critically, pH-triggered surface transformation enabled spontaneous intratumoral aggregation: acid-labile PEG shedding exposed biorthogonal click groups that cross-link sonosensitizers into ∼230 nm assemblies, thereby boosting tumor retention. This integrated strategy elevated cellular ROS yield 9.7-fold under ultrasound irradiation and achieved 98.2% tumor suppression in mouse models. Concurrently, nonaccumulated sonosensitizers were cleared by the kidney due to their ultrasmall diameter, mitigating systemic toxicity risks. This work establishes a paradigm for inorganic sonosensitizers that intrinsically unite defect-optimized sonosensitivity, TME-enhanced catalysis, and tumor-retentive aggregation with on-demand metabolic clearance, resolving the fundamental efficacy–safety conflict in SDT.
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PubMed
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Tongtong Zhu,Xu Liang,Yanrong Liang,Yusai Xu,Haitao Wang,Lingling Dong,Jiaying Zheng,Youqing Dong,Weidong Xiang,Xiaojuan Liang
The low thermal regulation and reflectivity of reflective converters limit their use in high brightness and power applications. The well-known "efficiency degradation" effect causes significant heat accumulation, leading to thermal quenching. This highlights the urgent need for the development of phosphor conversion materials with enhanced heat dissipation and reflectivity. In this study, zinc oxide (ZnO), with excellent thermal conductivity and reflectivity, was incorporated into titanium dioxide (TiO 2 ) and co-printed onto an aluminum nitride (AlN) substrate. The LuAG: Ce-PiF-TiO 2 -ZnO-AlN (LuAG: Ce PT-ZAF) reflective green converter with outstanding optothermal performance was designed. The experimental results show that the reflectivity of the doped ZnO reflective layer can reach 90.95 %, while the thermal conductivity and thermal diffusivity of LuAG: Ce PT-ZAF containing 7 % ZnO are 50.23 W·m −1 ·K −1 and 19.84 mm 2 /s, respectively. The optimized LuAG: Ce PT-ZAF glass film can withstand a maximum laser power density of up to 22.96 W/mm 2 , with a maximum luminous flux (LF max ) of 3091.40 lm and a luminous efficiency (LE max ) of 206.15 lm/W, which is 1934.40 lm and 19.21 lm/W higher than that of undoped glass films. At 498.15 K, the emission intensity of LuAG: Ce PT-ZAF reaches 91.19 %. This indicates that LuAG: Ce PT-ZAF is a promising green laser phosphor conversion material with high stability, high reflectivity, and high thermal conductivity.
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高影响因子
Results in Engineering
·
2025
·
IF 7.9
Ning Wang,Yingqi Luo,Xiaoxiao Yang,Hejia Sun,Yonghong Liu,Yunfeng Li
The pervasive contamination of water bodies by antibiotics necessitates the development of efficient remediation technologies. Herein, A visible-light-responsive BiOI/TiO 2 p-n heterojunction photocatalyst was engineered through a facile solvothermal approach, achieving exceptional oxytetracycline (OTC) degradation in simulated complex aquatic environments. The optimized BiOI/TiO 2 (2:1) composite degraded 92.8% of 20 mg/L OTC within 90 min––2.3-fold and 3.1-fold faster than pristine BiOI and TiO 2 , respectively––while exhibiting a record-high specific degradation rate ((SDR): 5.16×10⁻ 5 mg/(g·W·min)). Systematic characterizations (XPS/EIS/EPR) revealed that the built-in electric field at the p-n interface spatially separates charges, suppresses recombination by 54.5%, and extends carrier lifetime. Crucially, the composite maintained >85% efficiency in saline (0.1 M NaCl) and organic-rich water (20 mg/L HA), with <6% activity loss after 5 cycles due to Bi-O-Ti interfacial stabilization (XRD/ICP-MS). Mechanistic studies identified dual reactive pathways: h + -directed oxidation (primary) and ·O 2 ⁻-mediated cleavage (secondary), achieving >70% mineralization (TOC). This work provides a scalable interfacial engineering strategy for designing robust photocatalysts applicable to antibiotic-contaminated wastewater.
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Zhengwei Xu,Xiaohong Jiang
TiO 2 nano-porous arrays with appropriate structural parameters, roughness and wettability have application potential in implantable titanium-based (Ti-based) alloys. In this research, the polydopamine (PDA) and Arg-Gly-Asp (RGD) peptide are adopted to construct a favorable osteogenic microenvironment on the anodized TiO 2 nano-porous arrays before and after heat treatment. The characterization of surface morphologies and chemical compositions has been conducted to confirm the feasibility of the PDA-based modification and RGD peptide immobilization. Via immersion in the modified-simulated body fluid (m-SBF) for 7 days, the PDA-based modified samples have represented enhanced biomineralization performance. Moreover, the cell adhesion and proliferation assay, alkaline phosphatase (ALP) activity assay and quantitative real-time polymerase chain reaction (qRT-PCR) assay in vitro have indicated that the heat-treated TiO 2 nano-porous arrays modified with PDA and RGD peptide have endowed the seeded MC3T3-E1 mouse pre-osteoblasts with excellent osteogenic performance. Such modified TiO 2 nano-porous arrays have great latent capacity in implantable materials for biomineralization and osteogenesis.
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高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2022
·Vol. 30
·期 11
·4550-4561
·
IF 4.705
Jiang Longwei,Wang Fenghui,Xie Cancan,Xie Xinyan,Meng Xiangyi,Zhang Huajiang
In this study, active packaging films were developed by incorporating nano TiO 2 and pomegranate peel extract (PPE) into high-amylose corn starch (HCS)/konjac glucomannan (KG) matrix for the first time. The aim of present work was to investigate the influence of nano TiO 2 and PPE on physicochemical and functional properties of HCS/KG-based films. The films were characterized by XRD, FT-IR and SEM, and the tensile, antibacterial and antioxidant properties were evaluated. The results showed that the crystallinity of the composite films was increased and the microstructure was more uniform and dense after adding TiO 2 and PPE, and the intermolecular hydrogen bonds were formed between TiO 2 , PPE, and film matrix. Incorporation of TiO 2 and PPE significantly improved tensile properties and decreased water solubility and water vapor permeability of the composite films (p < 0.05). HCS/KG films incorporated with TiO 2 and PPE presented remarkable antibacterial activity against Escherichia coli and Staphylococcus aureus , and exhibited strong antioxidant activity due to the polyphenol compounds in PPE. All films properties not only changed with the content of TiO 2 and PPE, but also improved synergistically when they were added together. The developed composite films were used as coating for the preservation of Agaricus bisporus , and the weight, firmness and total soluble solids of A. bisporus were significantly maintained and browning was effectively inhibited during storage. Therefore, HCS/KG composite film/coating containing TiO 2 and PPE has great potential as an attractive commercialization technology to ensure the quality and extend the shelf life of foods.
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ENERGY & FUELS
·
2024
·
IF 5.2
Wenbo Jia,Yueyuan Wang,Shaohua Ling,Liren He,Binghe Chen,Songtao Liu,Chuanmin Chen,Yue Cao
Fast selective catalytic reduction (SCR) atmosphere can significantly improve the NOx removal activity of VWTi catalysts, while the catalytic performance and reaction pathway of Hg0 oxidation in a fast SCR atmosphere are still unclear. In this paper, the catalytic activity of simultaneous NOx removal and Hg0 oxidation over VWTi catalysts in a simulated fast SCR atmosphere was investigated for the first time. The results showed that VWTi catalysts possessed a wide NOx removal active temperature window and a high Hg0 oxidation activity in a fast SCR atmosphere. The X-ray photoelectron spectroscopy (XPS) and Hg temperature-programmed desorption (Hg-TPD) methods were used to investigate the Hg0 oxidation process over VWTi catalysts in a fast SCR atmosphere. Combined with the homogeneous Hg0 oxidation experiment results, two domination reaction routes of Hg0 oxidation over VWTi catalysts in a fast SCR atmosphere were proposed. One was that the adsorbed Hg0 could react with the surface active species to form HgO. The other reaction route was a gaseous homogeneous route that the gaseous Hg0 could be oxidized directly to Hg(NO3)2 by gaseous NO2. Particularly, the gaseous homogeneous Hg0 oxidation process could notably weaken the inhibition effect of NH3 on Hg0 oxidation, thus improving the Hg0 oxidation activity of VWTi catalysts in a fast SCR atmosphere.
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高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Siqi Jing,Xiaohui Yan,Taibai Li,Yige Xiong,Tao Hu,Zhongjie Wang,Xiang Ge
Supercapacitors are advantageous in terms of power density and cycle life, but their wider application is limited by self-discharge. Previous attempts for improving the stability have mainly focused on the specific component (materials, separators or electrolytes) of the device, while the feasibility for mitigating self-discharge through a general device-scale configuration is largely unknown. Herein, we report a symmetric supercapacitor with a conjugated configuration, which consists of a pair of pre-lithiated niobium oxide decorated with evenly distributed titanium dioxide, forming a Li x [(Nb 2 O 5 ):(TiO 2 ) a ] vs. Li 2-x [(Nb 2 O 5 ):(TiO 2 ) a ] conjugated configuration. The intercalation type pseudocapacitive Nb 2 O 5 are unique due to their linearly sloped charge/discharge curve like electrochemical double layer capacitances (EDLCs) while the charged ions can be inserted/extracted reversibly from the bulk like batteries . As a result, such conjugated device can store energy like conventional EDLCs, while the self-discharge process is significantly supressed. When further added with suitable amount of titanium dioxide as the stabilizer , the conjugated supercapacitor retained 74% of its energy after aging for 48 h. These results are expected to provide a general guidance for designing materials specifically for constructing conjugated supercapacitors with high initial energy density and alleviated self-discharge.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2016
·
IF 2.822
Longhua Ding,Chao Ma,Li Li,Lina Zhang,Jinghua Yu
A facile photoelectrochemical sensor for the determination of hydrogen sulfide (H 2 S) is developed. Photocurrent is generated through the grafting of CdS nanoparticles covalently and in situ onto TiO 2 nanotubes . The surface of TiO 2 nanotubes was modified by a layer of thioglycolic acid (TGA) to introduce thiol groups which can adsorb and immobilize Cd ions . CdS nanoparticles would be formed onto TiO 2 nanotubes after treating with exogenous or endogenous H 2 S. Both the exogenous and H 2 S released from cancer cells were detected based on the photoelectric properties of CdS nanoparticles. And a wide linear range (10 nM–10 6 nM) was achieved with a detection limit of 0.7 nM.
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高影响因子
危险品化学品经营许可证（带存储）