MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Qingmei Yang,Yirui Lin,Yihui Qiu,Chengxiu Wu,Xiaojiao Zhang,Wanxiong Lin,Beibei Wang,Ying Hou,Yanping Lin,Yue Jia
Achieving consistent fabrication of photoelectrochemical (PEC) biosensors remains a challenge, largely due to the variability introduced by manual drop-casting of photoactive materials. To address this limitation, we report a one-step laser-sputtering technique that enables the construction of a standardized sensing platform for ultrasensitive detection of Protein Induced by Vitamin K Absence or Antagonist-II (PIVKA-II), a clinically relevant biomarker for hepatocellular carcinoma. In this process, a mixed target of titanium and melamine is irradiated, where laser-induced thermal and photon pressure effects simultaneously synthesize a TiO 2 /g-C 3 N 4 heterojunction and uniformly sputter-deposit it onto an ITO electrode. This laser-engineered photoanode exhibits excellent batch-to-batch consistency. After immobilizing anti-PIVKA-II antibody, the resulting immunosensor quantifies PIVKA-II based on the specific immunocomplex-triggered photocurrent decrease, achieving a wide linear range from 0.5 ng/mL to 1 μg/mL and a low limit of detection (LOD) of 0.13 ng/mL with high specificity, stability, and reproducibility. Beyond offering a dependable tool for clinical PIVKA-II analysis, this work establishes a generalizable laser-based manufacturing strategy that paves the way toward standardized production of next-generation PEC biosensors.
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高影响因子
Journal of Environmental Sciences
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2026
·
IF 6.5
Su Jiang,Jun Tang,Pengling Zhang,Lingkui Zhao,Junfeng Zhang,Yan Huang
NH 3 rapidly attenuates photo-assistance efficiency in co-removal of NO and toluene. • NO 2 formation/consumption is rate determining step of photothermal SCR reaction. • Dispersed V 5+ =O sites oxidize both NH 3 , NO and toluene under illumination. • NH 3 -derived radicals attack aromatic rings, inducing phenolic buildup on active sites. • Without mitigating photo-assisted effect attenuation, photothermal deployment increases burdens. V 2 O 5 /TiO 2 -mediated photothermal co-removal of NO and VOCs from incineration flue gas represents a promising energy and emission saving strategy. It is crucial to elucidate the effect of V 2 O 5 loading and to clarify the interaction among reactants during the photothermal catalytic process. Herein, this study elucidates the V 2 O 5 loading effect and provides mechanistic insight into reactant interactions over V 2 O 5 /TiO 2 during photothermal co-removal of NO and toluene. Optimal V 2 O 5 loading increases dispersed V 5+ =O redox and V 5+ –OH adsorption activation sites, while Ti-O-V interfacial motifs modulate the local electronic structure to promote interfacial charge transfer and charge separation. Under photothermal conditions, V 5+ =O sites simultaneously mediate the oxidation of NH 3 and NO, where the formation and consumption of NO 2 serves as the rate-determining step, leading to ineffective accumulation of photogenerated NH 4 + species. In the absence of NH 3 , photogenerated charge carriers promote the initial dehydrogenation of toluene via side-chain activation on V 5+ -OH sites, followed by deep ring-opening degradation mediated by V 5+ =O species. NO reduces the overall toluene conversion but enhances the reaction selectivity toward deep oxidation. When NH 3 and toluene co-exist, radicals derived from NH 3 directly attack the aromatic ring, thereby changing the side-chain oxidation pathway, triggering the formation of strongly adsorbed phenolic intermediates that block catalytic sites. NH 3 does not merely compete with toluene for V-OH adsorption sites, its presence also redirects the toluene oxidation pathway and locks the reaction into a thermally driven regime. This work provides insights into the V 2 O 5 -loading effects and the interaction of reactants in multipollutant photothermal catalysis. Download: Download high-res image (337KB) Download: Download full-size image
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高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 47
·期 21
·30860-30868
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IF 4.527
Junwei Hou,Bingxuan Huang,Lingcong Kong,Yu Xie,Yansheng Liu,Mengmeng Chen,Qingyao Wang
TiO 2 nanotube arrays (TiO 2 NTs) were regarded as the outstanding semiconductors for the photocatalytic application in waste water treatment and H 2 generation, and CdS nanoparticles as the visible light sensitizers were traditionally used to enhance the photocatalytic performance. In this paper, CdS–CuS co-sensitizers were deposited on TiO 2 NTs by one-pot hydrothermal method , and the Cu/Cd ratio was changed to adjust the hybrid photocatalyst composition and electron transfer . The photocatalytic data indicated that suitable CdS–CuS composition could effectively enhance the photocatalytic pollutant removal and photocurrent/H 2 evolution and the hybrid photocatalyst also exhibited the high stability by the inhibition of CdS photocorrosion. The p-n heterojunction construction of TiO 2 NTs/CdS–CuS benefited the solar response, photoelectron separation and photocatalytic reaction, and the photocatalytic mechanism and photoelectron transfer were investigated. The p-n heterojunctional photocatalyst is supposed to apply in environmental remediation and new energy development.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Diao Qun,Chang Lu,Zeng Yong,Chen Jimin
The additive manufacturing of complex Zn 2 SiO 4 –TiO 2 (ZST) microwave dielectric ceramics via vat photopolymerization (VPP) presents challenges in balancing densification with phase purity. This study systematically investigates how the initial SiO 2 precursor particle size (30 nm, 300 nm, and 5 μm) governs the entire process–property relationship. While the use of nano-sized SiO 2 particles promoted sintering activity and improved densification, it also led to the emergence of a secondary phase with high dielectric loss, which adversely affected the quality factor ( Q × f ). Conversely, larger (micron-sized) particles suppress this impurity, ensuring high phase purity at the cost of slightly lower density. By leveraging this understanding, the ZST ceramic derived from 5 μm SiO 2 (ZST3) achieved a favorable balance of properties, exhibiting a high quality factor ( Q × f ), a suitable dielectric constant ( ε r ), and excellent thermal stability with a near-zero τ f value. This study demonstrates that controlling the precursor particle size is an effective method for tailoring the microstructure and phase composition, thereby enhancing the performance of additively manufactured microwave dielectrics.
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高影响因子
Journal of Physical Chemistry C
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2017
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IF 4.536
Chenxi Zhang,Lingli Zhang,Ning You,Zhe Cui,Peng Fu,Minying Liu,Xinchang Pang,Qingxiang Zhao
An unconventional but robust route to synthesize anatase TiO2 colloidal nanocrystals with tunable surface chemistry and dimensions was developed via liquid crystalline polyamides (LCPAs) with pyridine rings as a functional matrix. Titanium(IV) tetraisopropoxide (TTIP), as the precursor of TiO2 nanocrystals, was selectively incorporated into the compartment containing pyridine ring units via a coordination interaction between the pyridine rings and precursors, followed by an in situ direct polycondensation reaction of two monomers with TTIP into amorphous TiO2 nanoparticles encapsulated into the LCPA matrix. The functional polyamide chains capped on the surface of the TiO2 nanoparticles can be readily carbonized at 500 °C in inert atmosphere (argon), subsequently with the carbon forming a protecting coating on the surface of TiO2 nanocrystals to prevent the nanocrystals from aggregating. In addition, the amorphous TiO2 was simultaneously transformed into anatase TiO2 after 500 °C calcination. The carbon shell on the surface of anatase TiO2 nanocrystals can be readily removed by calcination at a relatively low temperature (400 °C) in air. At last, the carboxyl-terminated polymers, such as PMMA–COOH or PEG–COOH, were chosen as functional ligands for the surface modification of anatase TiO2 nanocrystals to fabricate core@shell anatase TiO2@polymer colloidal nanocrystals. The sizes of anatase TiO2 nanocrystals can be also tuned by adjusting the molar ratio of TTIP precursors to pyridine units.
研究领域:
材料科学
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纳米技术
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高分子化学
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无机合成
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表面工程
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2022
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IF 10.319
Cen Wang,Xuan Ge,Huiqing Fan,Fan Yang,Qiaodan Hu,Jianguo Li
Oxygen deficient TiO 2- δ nanoparticle has raised wide research interests as electrocatalysts, however, it is challenging to tune the particle size and phase composition simultaneously to optimize its performance. Here we prepared TiO 2- δ nanoparticles taking advantage of the liquid immiscibility phenomenon in TiO 2 -SiO 2 system by aerodynamic levitation (ALD), and employed a simple parameter, the resident time in the immiscibility region, to achieve simultaneous tuning of particle size and phase composition. A quantitative relationship between the particle size and the mass fraction of rutile phase was established, and the formation mechanism of the two-phase particle was proposed. Furthermore, the synthesized TiO 2- δ nanoparticles were evaluated as electrocatalysts for reducing nitrate to ammonia, which showed better performance than the commercial TiO 2 nanopowder. Results from this work provide a simultaneous tuning strategy for regulating the particle size and phase compositions of TiO 2- δ nanoparticles by controllable solidification, and broaden the potential application of TiO 2- δ .
研究领域:
材料科学
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纳米技术
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电催化
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无机化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Jiali Yang,Tingting He,Xinyi Li,Rui Wang,Shiyu Wang,Yang Zhao,Huan Wang
In past decades, the frequent emergence of offshore oil accidents and the increasing of soluble pollutants have caused enormous damage to the ecosystem. It is urgent to develop efficient oil-water separation and water purification materials. In this work, a superhydrophobic material on the pretreated cotton fabric is prepared by simple immersion in TiO 2 nanoparticles and stearic acid solution. The resultant composited fabrics not only exhibited considerable superhydrophobicity with a water static contact angle of 157.3° and a water shedding angle of 5° favorable for oil-water separation, but also achieved the excellent photocatalytic activity by the degradation of water-soluble pollutants under visible light irradiation. The degradation efficiency could reach 98.4% within 60 min under visible light irradiation. Additionally, the coated cotton fabrics have excellent self-cleaning and stain resistance properties. After more than ten-cycles tests, the composited fabrics still maintain favorable performance of oil-water separation and photocatalytic degradation, which proves the excellent reusability. In the light of the outstanding predominance of the multifunction cotton fabrics, this simple, cost-effective, environmentally friendly and suitable for large-scale production strategy can boost the development of multipurpose superwetting materials, providing great tantalizing potential for oily wastewater efficient purification and environmental remediation.
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CHEMOSPHERE
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2022
·
IF 8.943
Mingyong Wang,Taiguang Li,Qingzheng Hou,Yongmei Hao,Zhongming Wang
In this work, Co and Ce doped TiO 2 (CoCeTi) with low content of Co and Ce was successfully prepared by a facile one-step sol-gel solvothermal process for activating Peroxymonosulfate (PMS) to degrade Polycyclic aromatic hydrocarbons (PAHs). The phenanthrene degradation rate was 98.2% effectively in 15 min by CoCeTi (50.0 mg/L) activation PMS (0.50 mmol/L) under visible light. S O 4 • − , O 2 • – , h + and 1 O 2 were verified as the dominant reactive species for PAHs degradation. The collective effect of CoCeTi, PMS and visible light irradiation has been discussed. The possible phenanthrene degradation pathway was proposed through intermediates analysis. CoCeTi composed of Co 3 O 4 , CeO 2 and TiO 2 was confirmed. Outstandingly, CoCeTi/PMS/visible light system has very low cobalt (0.036 mg/L) and cerium (0.27 mg/L) leaching. Due to CoCeTi having good activated PMS properties and other excellent characteristics, it has potential application for PAHs or other organic pollutants degradation .
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 36
·17277-17290
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IF 4.682
Wan Xiang,Wang Jiafei,Wang Dian,Xu Qin,Xie Fazhi,Qu Qishu
In a mixed solvent composed of acetonitrile and ethanol, tetrabutyl orthotitanate (TBOT) was quickly introduced into the pores of the core–shell silica particles (SiO 2 @ d SiO 2 ) using the coordination bond formed between N and Ti. Since all the hydrolysis reactions of TBOT occurred in the pores, SiO 2 @ d SiO 2 spheres coated with TiO 2 (S@S@TiO 2 ) with an effective loading of TiO 2 as high as 74% were obtained. Because all TiO 2 nanoclusters are located in the pores, their growth is restricted by the pores. So the size of crystalline grains in the pores of the shell slowly increases with the increase in the calcination temperature. Due to the confined growth of TiO 2 nanoclusters, S@S@TiO 2 still maintains the anatase phase when the calcination temperature is as high as 1050 °C, which is significantly higher than the maximum thermal stability temperature of 900 °C reported in the literature. When used as photocatalysts for the degradation of Rhodamine B under UV irradiation, the catalytic activity of S@S@TiO 2 calcined at 950 °C is 2.1 times higher than that of the commercial P25 TiO 2 photocatalyst. Graphical abstract
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Lixin Zhang,Lei Rao,Peifang Wang,Zhenyu Shi
TiO 2 nanoparticles are promising photocatalysts for the remediation of water pollution. However, the difficulty in recycling and low light absorption of powder TiO 2 hinder their application in photocatalysis. Although some studies have attempted to address these problems by immobilizing TiO 2 , the application of traditional immobilized TiO 2 in water environment is limited because of their unstable immobilization, poor mechanical strength, low light utilization, high electron-hole recombination,and unsatisfactory photocatalytic performance. In this study, flexible superhydrophobic Nitrogen-doped TiO 2 (N-TiO 2 ) silicone composite aerogels were achieved by copolymerization of γ-methacryloxypropyl trimethoxy silane (KH570)-grafted N-TiO 2 with methyltrimethoxysilane and dimethoxydimethylsilane. These flexible composite aerogels possess improved mechanical strength and stable immobilization of N-TiO 2 . Moreover, an air–liquid–solid triphase photocatalytic interface was formed by the superhydrophobic surface of composite aerogel, solution and the air layer existed between them. This triphase photocatalytic interface enabled oxygen at the reaction interface to be directly and rapidly supplied from the air layer, thus photogenerated electrons from the photocatalyst surface can be effectively removed and the recombination of electron holes can be reduced. Besides, the flexible photocatalyst was molded into water grass shape and placed in a water channel to verify its photodegradation efficiency and durability under hydrodynamic conditions. Experimental results confirmed that the proposed flexible photocatalyst with a triphase catalytic interface has application prospects for the degradation of pollutants in water environment.
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Materials
·
2022
·Vol. 15
·期 23
·8671
·
IF 3.748
Yuan Li,Xirong Lin,Zhanpeng Li,Jinyun Liu
A composite composing of TiO2nanoparticles load on biomass rice husk (RH) is developed by directly growing TiO2nanoparticles on RH. The in-situ growth of the nanocrystals on RH is achieved by a low-cost and one-step homogeneous precipitation. Rapid hydrolysis proceeds at 90 °C by using ammonium fluotitanate and urea to facilitate the selective growth of TiO2. The method provides an easy access to the TiO2-RH composite with a strong interaction between TiO2nanoparticles and the underlying RH. The structure and composition of TiO2-RH are characterized by using X-ray diffraction, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and UV-vis absorption spectroscopy. TiO2nanoparticles-RH exhibits a good photocatalytic degradation of methyl orange. The results show that 92% of methyl orange (20 mg L−1) can be degraded within three hours in visible light. The catalytic activity of the composite is not reduced after 6 cycles, and it still reaches 81% after 6 cycles. The enhanced performance is ascribed to the suitable particle size the good dispersibility. It is expected that the high photocatalytical performance and the cost-effective composite presented here will inspire the development of other high-performance photocatalysts.Keywords:TiO2;rice husk;photodegradation;methyl orange;ecological restoration
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2022
·
IF 11.357
Jing Li,Jiawei Dong,Yanshan Huang,Jiana Su,Yu Xie,Yundang Wu,Wei Tang,Yongtao Li,Weilin Huang,Chengyu Chen
Dermal penetration potentials of titanium dioxide nanoparticles (TiO2 NPs) may be affected by aggregation upon contact with sweat. This study investigated the aggregation kinetics of three TiO2 NPs in thirty human sweat samples and four artificial sweat standards. Effects of particle concentration, sweat type, and inorganic (sodium chloride, disodium hydrogen phosphate, and sodium dihydrogen phosphate) and organic (l-histidine, lactic acid, and urea) constituents were examined. Three TiO2 NPs remained colloidally stable in >20/30 human sweat samples and showed significant negative correlations (P < 0.01) between aggregation rates and |zeta potentials|. They aggregated rapidly over 20 min to >750 nm in three artificial sweat standards, while remained more stable in the International-Standard-Organization-pH-5.5 standard. Aggregation behaviors of three TiO2 NPs mostly followed the Derjaguin–Landau–Verwey–Overbeek (DLVO) theory, allowing for determining their critical coagulation concentrations in inorganic constituents (15–491 mM) and Hamaker constants (3.3–7.9 × 10–21 J). Higher concentrations of particles, inorganic constituents, and l-histidine destabilized three TiO2 NPs, whereas urea inhibited aggregation. Three TiO2 NPs adsorbed organic sweat constituents via complexation with amino or carboxyl groups, with isotherms following the Langmuir model. Correlation analyses further suggested that the adsorbed organic constituents may stabilize three TiO2 NPs against aggregation in sweat by steric hindrance.
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高影响因子
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