Surfaces and Interfaces
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2026
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IF 6
Tianchen Liu,Haiqin Jiang,Anning Zhao,Fulin Deng,Ruixin Zhang,Linjie Song,Yuanzhen Zhou,Jihua Nie,Min Ren,Wenlong Mao,Yunjie Xiang,Xi Rao
Regulating the exposed-facet area ratio of rutile TiO 2 is an effective route to tune charge separation, but its influence on gas-phase formaldehyde photo-oxidation remains unclear. Here, rutile TiO 2 nanorods with different (111)/(110) facet-area ratios were synthesized by an HCl-assisted hydrothermal route by varying the HCl concentration. Increasing the acid concentration promoted the formation of well-defined rutile nanorods, while the corresponding facet-area ratio decreased from 0.138 to 0.044 as the rods became longer and thinner. Among the samples, TNH-3M (R f = 0.138) exhibited the weakest photoluminescence, the highest photocurrent response, and the smallest electrochemical impedance arc, indicating the most efficient charge separation and interfacial charge transfer. Mott-Schottky analysis further showed that TNH-3M possessed the most positive valence-band position among the rutile nanorod samples, which favored the generation of •OH radicals. Accordingly, TNH-3M delivered complete removal of gaseous formaldehyde within 2 h under 420 nm LED irradiation and maintained >95% efficiency after repeated cycling. Batch synthesis also retained high activity, confirming the scalability of the preparation strategy. The improved performance is therefore attributed to the optimized balance between the oxidation-dominant (111) facets and reduction-dominant (110) facets, which promotes spatial charge separation and enhances ROS generation. Download: Download high-res image (171KB) Download: Download full-size image
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 6
·e70945
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IF 4.2
Guowei Zhang,Zhen Yan,Zhanhui Peng,Qingqing Li,Qizhen Chai,Yuanhao Wang,Di Wu,Lingling Wei,Pengfei Liang,Zupei Yang,Xiaolian Chao
TiO 2 -based colossal permittivity ceramics with high dielectric constant and low loss have become one of the key candidates for high-capacity high-end capacitors. This study investigates the influence of oxygen vacancy concentration on the dielectric properties of TiO 2 -based ceramics by adjusting the acceptor-to-donor ratio, and finds that the (In x Nb 1− x ) 0.005 Ti 0.995 O 2 (INTO) sample with x = 1/3 exhibits ultra-low dielectric loss (tan δ) of 0.013 as well as high dielectric constant ( ε r ) of 1.7 × 10 4 (1 kHz). The results obtained from dielectric property measurements, relaxation behavior analysis, and X-ray photoelectron spectroscopy indicate that the high dielectric constant and low dielectric loss originate from the synergistic effect between oxygen vacancy-related defect clusters and electron-pinned defect dipoles. This work not only provides a new strategy for achieving colossal permittivity and ultra-low loss simultaneously via oxygen vacancy tailoring in TiO 2 -based ceramics and related materials, but also develops promising candidates for high-capacitance ceramic capacitors.
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Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 6
·124924
·
IF 7.5
Jing Yao,Liuqing Li,Tiefeng Xu,Wangyang Lu
As a renewable platform chemical, 2, 5-furandicarboxylic acid (FDCA) provides a sustainable alternative to petroleum-derived terephthalic acid with vital strategic importance. Achieving the efficient conversion of 5-hydroxymethylfurfural (HMF) to FDCA under environmentally friendly conditions is of great practical significance. Herein, an Au/Fe 3 O 4 /TiO 2 photocatalyst was prepared by first synthesising an Fe 3 O 4 /TiO 2 composite via a hydrothermal method, followed by amination and subsequent reduction of Au nanoparticles. Furthermore, multiple characterisations confirmed the successful loading of Fe 3 O 4 and Au nanoparticles, while abundant Fe signals were detected adjacent to the Au nanoparticles. Under simulated solar irradiation, an FDCA yield of 97% was achieved within 15 h, demonstrating the superior catalytic performance of the Au/Fe 3 O 4 /TiO 2 photocatalyst. Moreover, the photocatalytic activity remained at 85% after five consecutive cycles, indicating its excellent cycling stability and reusability. Simultaneously, superior photocatalytic activity and stability were attained owing to the strong synergistic effect among Au nanoparticles, Fe 3 O 4 and TiO 2 . In addition, the photocatalytic oxidation mechanism of HMF to FDCA over Au/Fe 3 O 4 /TiO 2 was elucidated, wherein h + , 1 O 2 and •O 2 - contributed to the production of FDCA. This study provides a promising strategy for the efficient photocatalytic conversion of HMF to FDCA under mild conditions.
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JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2026
·
IF 2.5
Yagang Li,Shuyan Huo,Yunhui Xing,Yonghang He,Wei Wu,Min Huang,Yiming Jiang,Guoping Zhong,Weiwei Zeng
Novel TiO 2 @MWCNTs composites were designed and synthesized, which exhibit potential as purification materials for phospholipid removal from rat plasma samples. • A dispersive solid-phase extraction method based on TiO 2 @MWCNTs showed the capacity to mitigate matrix effects in rat plasma samples for small-molecule analytes with low lg P . • An LC–MS/MS method was established and validated for quantifying representative drugs using TiO 2 @MWCNTs and applied to a pharmacokinetic study of metformin. The matrix effect is a prevalent interference in LC–MS/MS bioanalysis of small-molecule drugs, with lipids as a major source of such interference in plasma matrices. Leveraging the lipid-adsorbing capability of multi-walled carbon nanotubes (MWCNTs), this study synthesized TiO 2 @MWCNTs composites and developed a novel dispersive solid-phase extraction (d-SPE) method to reduce matrix effects in rat plasma. Lipid profiles were compared to characterize the lipid purification capacity of TiO 2 @MWCNTs in rat plasma samples. The matrix effects of representative small-molecule drugs, including metformin, amisulpride, and aripiprazole, were compared across TiO 2 @MWCNTs-based d-SPE, protein precipitation, and traditional solid-phase extraction. Method validation and sample determination were subsequently performed. The results demonstrated that TiO 2 could be successfully loaded onto MWCNTs. The responses of 72 differential lipid ions were significantly reduced by at least 2-fold after TiO 2 @MWCNTs treatment, and the IS-normalized matrix factors for metformin (from 13.69 to 20.00% to 31.49–44.39%) and amisulpride (from 71.01 to 84.82% to 91.69–101.48%) as well as accuracy for aripiprazole at low concentration were significantly improved compared with protein precipitation treatment. Method validation results confirmed excellent selectivity, accuracy, precision, and reproducibility. The validated method was also successfully applied to a pharmacokinetic study of metformin with pharmacokinetic parameters comparable to those reported previously. This study shows that the dispersive solid-phase extraction method based on TiO 2 @MWCNTs could act as a simple, rapid, low-cost and reliable pretreatment strategy to mitigate matrix effects for small-molecule analytes with low lg P in rat plasma as a proof-of-concept attempt.
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OPTICAL MATERIALS
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2026
·
IF 4.3
Yunqing Lu,Yu Feng,Mengmeng Li,Ji Xu,Jin Wang
The photocatalytic conversion of CO 2 into solar fuels presents a sustainable approach to alleviate climate change and address energy crisis. To address the limitations of conventional photocatalysts, such as their restricted visible-light response and rapid charge recombination, we have developed a ternary nanocomposite consisting of zeolitic imidazolate framework-8 (ZIF-8), plasmonic gold nanoparticles (Au NPs), and titanium dioxide (TiO 2 ). In this system, ZIF-8 provides high-density CO 2 adsorption sites, enhancing the local concentration of CO 2 and facilitating its subsequent reduction. The incorporation of Au NPs induces a strong localized surface plasmon resonance (LSPR) effect, significantly broadening the visible-light harvesting capability of the composite and promoting efficient charge transfer between TiO 2 and ZIF-8. TiO 2 serves as a stable photocatalytic platform, enabling effective charge separation and transfer. Comprehensive characterization verifies the uniform integration of the three components and the formation of close interfacial contacts. The ternary nanocomposite demonstrates significantly improved visible-light absorption, reduced charge recombination, and enhanced photogenerated carrier separation and transfer, as supported by UV-vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL), electrochemical impedance spectroscopy (EIS), and photocurrent measurements. Under simulated sunlight, the ZIF-8/Au/TiO 2 photocatalyst achieves CO 2 -to-fuel conversion rates of 1.56 μmol g −1 h −1 for methane (CH 4 ) and 4.65 μmol g −1 h −1 for carbon monoxide (CO). This enhancement is attributed to the synergistic effects of plasmonic sensitization by Au nanoparticles and CO 2 adsorption enrichment by ZIF-8, which collectively enhance photon utilization, reactant concentration, and interfacial charge transfer dynamics.
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ACS Sensors
·
2026
·
IF 10.9
Peng Xu,Yanlei Guo,Xin Lv,Shuting Wei,Dan Yang,Renquan Guan,Yuxin Wang,Yingmin Teng,Aiceng Li,Huaqiao Tan,Zhongling Lang,Zheng Lou,Lili Wang,Zhao Zhao
The necessity for high-efficiency, low-power room-temperature (RT) ammonia (NH3) sensors is particularly acute in environmental monitoring, industrial safety, and medical diagnostics. However, conventional chemiresistive sensors frequently require elevated temperatures to initiate reactions, leading to high energy consumption and potential safety risks. Inspired by plant photosynthesis, this paper successfully designs a ternary S-scheme heterojunction for a photo-activated RT NH3 sensor. The design effectively mimics the efficient charge transfer process in photosynthesis, thereby significantly promoting the separation and migration of photogenerated carriers and enhancing the sensing performance. Experimental results demonstrate exceptional performance under illumination: a high response value of 1679% (representing a 20-fold improvement over the dark state), rapid response and recovery times of 2.1 s and 1.9 s, respectively, along with outstanding selectivity, excellent stability, and a detection limit as low as 17 ppb. This work demonstrates a novel, efficient RT photo-activated NH3 sensor and provides innovative insights into designing biomimetic, smart gas-sensing materials and devices.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yinghao Du,Dong Hao,Wei Yan,Jing Xu,Yuee Xie,Xiaohong Yan,Yuanping Chen
To address the limitations of traditional chemical methods and powder catalysts in photocatalysis, this study reports a novel physical vapor deposition (PVD) approach for constructing efficient and recyclable heterojunctions. Using electron-beam evaporation, the amorphous NiO film was deposited onto the surface of chemically synthesized TiO 2 /CdS precursors, ultimately yielding the flexible TiO 2 /CdS/NiO (TCN) multi-composite photocatalyst. The light absorption, charge carrier behavior, and degradation mechanism were investigated through UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), photoelectrochemical testing, and free radical trapping experiments. The prepared TCN composite material achieved a degradation efficiency of 96% for methyl orange (MO) within 60 min of visible-light irradiation, significantly outperforming pure TiO 2 (17%) and TiO 2 /CdS (41%). It also demonstrates broad-spectrum degradation capabilities for multiple antibiotics and exhibits excellent cycling stability. Mechanistic analysis indicates that both a Type-II heterojunction (TiO 2 /CdS) and a p-n heterojunction (CdS/NiO) are formed within the material. The built-in electric fields in both junctions are aligned, thereby synergistically promoting the efficient separation and migration of photogenerated electron-hole pairs. This work provides a new technical pathway and theoretical basis for designing practical, easily recyclable and highly efficient photocatalytic materials that minimize secondary pollution.
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ANALYTICA CHIMICA ACTA
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2026
·
IF 6.1
Bokai Zhou,Shuyan Liu,Xu Yin,Jie Feng,Mengyu Ding,Caiwei Hu,Guanghai Piao,Ji Man Kim,Junjie Piao,Yu Bai,Mingshi Jin
Exosome-based liquid biopsy has shown great promise in cancer diagnosis. Electrochemical biosensors, owing to their high efficiency, sensitivity, and operational simplicity, have become powerful tools for biological sample analysis. In this study, we developed a novel electrochemical biosensor based on FeOOH-mesoporous TiO 2 (FeOOH-mTiO 2 ) for label-free detection of exosomes in serum. Through a rationally engineered interface design, the biosensor addresses the critical challenge of simultaneously achieving high capture efficiency and high detection sensitivity. The composite material consists of a catalytic FeOOH core and a mesoporous TiO 2 shell. The high surface area of the mesoporous structure provides abundant active sites and enhances the selective interaction between TiO 2 and the phosphate groups on exosome membranes. Moreover, the formation of Ti–O–Fe interfacial bonds facilitate electron transfer and significantly improves the electrochemical response. The sensor achieves a detection limit of 2.04 particles/μL with a broad linear range of 10 2 –10 8 particles/μL, without the need for antibody-based capture or complex surface modifications. Clinical testing revealed that exosome levels in patients with hepatocellular carcinoma and colorectal cancer were 2.9 to 3.1-fold higher than those in healthy controls. This work advances exosome liquid biopsy technology through innovative material design and demonstrates strong potential for clinical cancer diagnosis and monitoring.
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Journal of Materials Chemistry C
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2026
·
IF 5.1
Huihuang Yang,Youshan Bi,Yujie Yan,Cong Liu,Yuling Wang,Daoqi Fang,Shuhui Mu,Chunbin Cao,Yuan Rao,Yaqian Liu,Fangxu Yang,Xiumei Wang
With the rapid advancement of artificial intelligence and the internet of things, neuromorphic computing, which mimics the efficient and low-power information processing of biological brains, has emerged as a pivotal direction for transcending conventional computing paradigms. Notably, a high on/off current ratio in OFET-based neuromorphic devices provides a broader, more precise synaptic weight dynamic range and distinguishable conductance states, enabling fine weight modulation and improved complex pattern recognition accuracy. The vertical organic field-effect transistor (VOFET) is regarded as a promising device architecture for building high-density, low-power neuromorphic systems, owing to its inherent nanoscale vertical channel. However, in VOFETs, the three-dimensional interface and the ultrashort channel formed between the mesh source electrode and the semiconductor layer often lead to high off-state current density and poor output saturation characteristics, which fundamentally limit device performance and neuromorphic application. Therefore, an interface optimization strategy by spray-depositing a titanium dioxide (TiO2) modification layer onto the surface of the silver nanowire (AgNW) mesh source electrode is proposed to successfully fabricate VOFET devices with low off-state current density (5.0 × 10−7 mA cm−2), high on–off ratio (∼2.8 × 106) and well-saturated output characteristics. Furthermore, an optoelectronic neuromorphic device with an AgNWs/TiO2&PDVT-10/TiO2 heterojunction structure is constructed. The device successfully emulates diverse synaptic behaviors and achieves an ultra-low power consumption of 0.235 fJ, yielding a recognition accuracy of 93.64% for banana ripeness classification based on a convolutional neural network. The VOFET interface optimization strategy provides a practical and feasible route toward high-performance neuromorphic devices, showing great promise for advancing the development of ultra-low-power intelligent computing systems.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Liqian Cui,Zhixin Qian,Yu Xu,Junya Yao,Yishu Guo,Xianfeng Wang,Li Liu,Chunhong Lu,Wenling Jiao,Bin Ding
Developing multifunctional materials that integrate microwave absorption, thermal insulation, ultralow density, and load-bearing capabilities is crucial for applications in complex environments. Herein, hydrogenated titanium dioxide nanofibrous sponges (H–TiO2 NFSs) featuring oxygen vacancies and heterogeneous interfaces were fabricated simply via electrospinning, followed by calcination and plasma treatment. The hydrogenation process modulated the band structure and introduced interfacial polarization, effectively enhancing the electromagnetic wave (EMW) attenuation performance. Consequently, the synthesized ceramic sponges exhibited a minimum reflection loss (RLmin) of −55.95 dB at 4.4 mm, with an effective absorption bandwidth of 4.2 GHz covering the X-band. Furthermore, the three-dimensional interconnected nanofibrous architecture endowed the H–TiO2 NFSs with ultralow density (0.047 g/cm3), low thermal conductivity (0.0356 W·m–1·K–1), and stable compressive resilience, including a residual strain of less than 18% after 100 cycles at 50% strain for H–TiO2-150 W. The as-obtained defect-engineered H–TiO2 NFSs are competitive candidates for thermal insulation and highly efficient X-band microwave absorption in harsh thermomechanical environments.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Jinwei Wu,Junfei Chen,Mingkang Zhang,Zebao Rui
Sulfur-induced catalyst deactivation has been a challenge in the design of gaseous pollutants purified catalyst. As the mainstream strategy for anti-sulfur catalyst design, the incorporation of sacrificial components into the catalyst bulk still faces issues such as increased cost and rapid activity decline. Herein, the physical isolated island strategy is proposed to improve the sulfur resistance and cost-effectiveness of a lean methane oxidation catalyst at no cost of its high activity. The isolated Al 2 O 3 island suppresses the formation of sulfates on adjacent Ir@Pt nanoparticles and avoids the sulfation of Ir@Pt/TiO 2 . Meanwhile, the isolated Al 2 O 3 island draws little effect on the chemical states of active sites. The sulfur adsorption function of isolated Al 2 O 3 island and high activity of Ir@Pt/TiO 2 are synergistically combined, leading to both remarkably high CH 4 oxidation activity (TOF = 1.2 s ‒1 at 350 °C) and high sulfur resistance without observable activity loss during 50 h on-stream test under 50 ppm SO 2 and a space velocity of 30000 mL g ‒1 h ‒1 . Such isolated-island strategy provides a meaningful reference for the efficient sulfur resistance catalyst design.
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ACS Catalysis
·
2026
·
IF 13.6
Shidong Bao,Wenxu Deng,Shourong Zheng,Xiaolei Qu,Heyun Fu
Revealing the multiple interactions in heterogeneous catalysts and the potential structural evolution under the reaction conditions is crucial for the rational design of catalysts. Herein, we elucidate the complex interactions within P-doped Rh catalysts supported on rutile TiO2 (r-TiO2) and anatase TiO2 (a-TiO2) as well as their structural evolution behavior during CO2 hydrogenation. Before P-doping, Rh/r-TiO2 with Rh ensemble sites primarily catalyzes CO2 methanation, while Rh/a-TiO2 with TiOx-encapsulated Rh sites originating from strong metal–support interaction (SMSI) shows high CO selectivity. P-doping into Rh/r-TiO2 transforms Rh ensemble sites into separated Rh sites, switching the catalytic selectivity from CH4 to CO at low reaction temperatures. Interestingly, the selectivity reverses from 100% CO to 95% CH4 with increasing temperature, demonstrating a dynamic structural evolution. The metastable P-doped Rh species is reconstructed into Rh ensemble and phosphate species due to electronic metal–support interaction and O* intermediate oxidation in a weakly oxidative reaction atmosphere, while it can be regenerated in a H2 atmosphere. For the a-TiO2-supported P-doped Rh catalyst, moderate TiOx encapsulation originating from SMSI contributes to stabilizing the P-doped Rh species during CO2 hydrogenation. Our study reveals that regulating metal–support interaction within TiO2-supported P-doped Rh catalysts can modulate their structural evolution behavior during the reaction, guiding the rational design of P-doped metal catalysts on reducible supports.
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