CHINESE JOURNAL OF CATALYSIS
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2026
·
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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CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Junbo Tian,Peng Zheng,Shuang Deng,Yongjun Ji,Tengfei Zhang,Zhiyi Sun,Wenxing Chen,Yi-Chi Wang,Lin Gu,Dong Su,Guangwen Xu,Ziyi Zhong,Fabing Su
Understanding reconstructed interfacial sites is crucial for enhancing the catalytic conversion efficiency, as these sites can facilitate reactant adsorption, transformation, and desorption. Herein, we report an unconventional interfacial structure of Pt σ + –O–Ti 4+ –H δ + –oxygen vacancy (OV), in which atomic hydrogen binds to Ti 4+ sites via a charge-compensation mechanism involving subsurface OVs. This restructuring induced by hydrogen creates electron-rich Pt centers and interfacial oxygen, resulting in spatial elongation of the Pt–O and O–Ti bonds. This Pt σ + –O site, stabilized by –Ti 4+ –(H–OV), promotes the activation of CO adsorption/interfacially absorbed oxygen and interfacial lattice oxygen, effectively coupling the Langmuir-Hinshelwood and Mars-van Krevelen pathways. These sites facilitate the rapid CO 2 formation and desorption. Consequently, this system achieves complete CO conversion at 120 °C with an ultralow Pt loading of 0.17 wt% (even in the presence of 0.005% SO 2 and 10% vol H 2 O) and a 59-fold increase in turnover frequency compared to the control sample lacking this interfacial structure.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
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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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Ying Yang,Longli Bo,Lu Wang,Zhe Li,Jin Yan,Wenjie Wang
To eliminate the environmentally hazardous effect of chlorinated volatile organic compounds (CVOCs) and verify the feasibility of replacing noble metal catalysts with cobalt-based catalysts, monolithic Cu-Co-Ce/TiO 2 /cordierite honeycomb (CH) catalysts were prepared by a sol-gel/impregnation combined method and applied in the catalytic combustion of chlorobenzene, compared with commercial noble metal catalysts. The research suggested that Ce loading had an optimal amount, and Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst exhibited the highest catalytic activity among four Cu-Co-Ce/TiO 2 /CH catalysts. Chlorobenzene was completely removed at 330℃ and mineralized at 400℃ under the conditions of an initial chlorobenzene concentration (C 0 ) of 1200 mg m −3 and gas hourly space velocity (GHSV) of 5000 h −1 . Compared with three noble metal catalysts, the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst had the highest catalytic ability at low C 0 and GHSV; however, its catalytic capacity was lower than that of noble metal catalyst C and higher than noble metal catalysts A and B at high values of C 0 (2000 m −3 ) and GHSV (20000 h −1 ). It is speculated that abundant active particles with different structures on the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst’s surface induce the lowest light-off temperature for chlorobenzene oxidation; however, their different catalytic activities also induce intermediate products that compete with chlorobenzene for the active sites, which decreases the catalytic activity of the catalyst, especially at high GHSV. The Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst exhibited good stability, water resistance, and excellent anti-chlorine-poisoning capacity under two different conditions, confirming the feasibility of replacing noble metal catalysts at the relatively low space velocities. This research further identified the key mechanism behind which is the oxygen vacancies, the acid sites, and the electron transfers among Cu 2+ /Cu + , Co 3+ /Co 2+ , and Ce 4+ /Ce 3+ that promoted the adsorption, activation, and transformation of gaseous oxygen and chlorobenzene. Therefore, chlorobenzene is adsorbed and oxidized onto the active sites of the Cu-Co 0.86 -Ce 0.54 /TiO 2 /CH catalyst by both O ads and O latt, which follows the L-H mechanism and the MvK mechanism, respectively. For the noble metal catalyst C, both the E-R mechanism and the L-H mechanism could coexist in chlorobenzene degradation. This research establishes a theoretical basis for the commercial application of low-cost cobalt-based catalysts to effectively lessen the hazardous effects of CVOCs on the ecosystem and human health.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 11
·843
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IF 3.2
Wan Jinlin,Wang Qinming,Wu Sen,Zhou Xingfu
Recently, compared to hybrid perovskites, all-inorganic perovskite solar cells have received enormous attention due to their excellent capability to resist heat, moisture, and ultraviolet light. The all-inorganic cesium lead halide perovskite (CsPbX 3 , X = Br, I, or their mixture) is considered an alternative light-harvesting material for solar cells. Moreover, CsPbI 3-x Brₓ derivatives have therefore emerged as ideal candidates owing to their tunable bandgap and high absorption coefficient. Nevertheless, interfacial non-radiative recombination and the thermodynamically favored δ-phase transition still impose efficiency and stability bottlenecks. In this work, trimethylammonium chloride (TACl) is employed as a multifunctional interfacial modifier. By integrating this interlayer modification at the TiO 2 /CsPbI 2.2 Br 0.8 interface, we simultaneously minimized interfacial defects, graded the energy levels, and controlled the crystallographic orientation of the perovskite lattice, thereby suppressing the charge recombination and stabilizing carrier dynamics through multifunctional synergy beyond single-function strategies. In addition, we successfully prepared hole-free carbon-based all-inorganic perovskite solar cells of FTO /TiO 2 / CsPbI 2.2 Br 0.8 /C by using low-cost commercial carbon slurry instead of the traditional gold/silver noble metal electrodes and the organic hole-transport layer Spiro-OMeTAD. After surface treatment with trimethylammonium chloride, the optimized device exhibited a peak power conversion efficiency of 12.2%, representing a 14.8% enhancement relative to the pristine device (10.6%).
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Journal of Materials Chemistry A
·
2026
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IF 9.2
Zhao Meng,Haibo Yang,Yongzhen Ma,Yan Cheng,Yanlong Ma,Binglong Zheng,Hongwei Zhou,Ying Lin
In increasingly complex electromagnetic environments, developing high-performance and dynamically tunable electromagnetic wave (EMW) absorption materials is essential. This study designed a pressure-responsive TiO2/CNFs@Co/C elastic aerogel for efficient EMW absorption. A 3D interpenetrating structure consisting of Ti3C2Tx MXene-derived TiO2 nanosheets, magnetic Co/C frameworks, and carbon nanofibers was constructed via electrospinning combined with in situ synthesis. This 3D interpenetrating structure constructs abundant heterogeneous interfaces, thereby enhancing interfacial polarization. The results demonstrate that the composite achieves an exceptionally broad effective absorption bandwidth (EAB) of 8.17 GHz at a thickness of 2.7 mm, with only 10 wt% filler loading. Additionally, the composite exhibits strong environmental tolerance, including hydrophobicity, stretchability, and thermal insulation. Notably, the alginate-induced elastic aerogels enable dynamic tuning from 6.4 to 18 GHz under compressive strains of 0% to 66%. This work designs dynamically tunable, high-performance EMW absorbers through component optimization and interface engineering, providing a promising strategy for the preparation of next-generation multifunctional intelligent EMW absorbers.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Wei Huang,Yuqi Wang,Quan Yuan,Yiran Hu,Chunmei Wang,Xiaomin Dou,Jun Liu
Addressing water scarcity and pollution in underdeveloped regions requires safe water production from inferior sources. Solar-driven interfacial evaporation (SDIE) coupled with photocatalysis offers great potential for this challenge. Herein, a dual-functional composite (BTG@MS) was fabricated by immobilizing oxygen vacancy- and Ti(III)-rich black TiO 2 /defective g-C 3 N 4 (BTG) on melamine sponge (MS) hydrogel. The composite broadens light absorption to 300–1200 nm (80.7% average absorption efficiency) and forms a type-II heterojunction, facilitating charge separation and reactive oxygen species (ROS) generation. Benefiting from MS’s hierarchical water transport pathways and BTG’s enhanced solar utilization, BTG@MS exhibits outstanding dual performance under one-sun illumination (1 kW/m 2 ), an evaporation rate of 1.26 kg/(m 2 ·h) (74.3% photothermal efficiency) and 84.5% tylosin (TYL) degradation efficiency. It also shows salt tolerance and effectiveness in purifying four types of water sources, producing clean water meeting WHO standards. This work presents an innovative strategy integrating photothermal evaporation and photocatalysis, promising practical application in tackling the water crisis in underdeveloped regions.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shuyue Jiang,Wensi Zhang,Donghao Cui,Jia Lou,Shilun Feng,Kaihuan Zhang
Flexible electrochemical sensors are essential for next-generation wearable health monitoring systems, yet their long-term stability is constrained by mechanical fragility and biofouling in complex biological environments. Here, we present a dual self-healing glucose biosensor incorporating uniquely raspberry-shaped Ga@TiO 2 particles that enable both mechanical and chemical regeneration. These particles facilitate ultrasensitive glucose detection (limit of detection = 0.14 μM) via efficient redox interactions, while also enhancing the device's structural and surface resilience. The Ga@TiO 2 /PVA hydrogel sensor exhibits exceptional multilayer physical self-healing behavior, arising from the synergistic combination of PVA's dynamic hydrogen bonding and the intrinsic fluidity of the liquid metal core, maintaining 101.2 ± 4.13% of its original sensitivity after fracture healing. In addition, the sensor achieves reproducible biofouling self-healing, recovering 100.4 ± 1.35% of its initial signal after contamination, owing to the biomimetic surface morphology and self-renewing liquid metal interface. The gallium-based conductive network further ensures stable electrical performance under mechanical deformation due to its high conductivity and flow adaptability. This dual self-healing mechanism—analogous to biological tissue regeneration and self-cleaning surfaces—offers a robust strategy for constructing durable, high-performance flexible biosensors capable of reliable operation in dynamic and bioactive environments.
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ANALYTICA CHIMICA ACTA
·
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
·
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
·
2026
·
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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