FUEL
·
2025
·
IF 7.5
Yanxu Wang,Jiao Shen,Lijia Huang,Yi Yuan,Yaoqi Huang,Ge He,Yuan Wang,Shaojun Yuan
S-scheme heterojunction photocatalysts have emerged as a promising strategy to overcome the limitations of conventional systems by enabling efficient charge transfer while preserving strong redox capability. In this study, a novel flower-like In-TiO 2 @Bi 2 MoO 6 S-scheme heterojunction was developed via a simple hydrothermal synthesis for visible-light-driven photocatalytic desulfurization of H 2 S. The optimized In-TiO 2 -0.4@Bi 2 MoO 6 composition (molar ratio of In-TiO 2 to Bi 2 MoO 6 = 0.4) achieved complete H 2 S removal within 120 min under visible-light irradiation, exhibiting outstanding activity, operational stability, and adaptability to various desulfurization conditions. Mechanistic investigations using VB-XPS, UPS, ESR, DRIFTS and DFT calculations confirmed that the S-scheme configuration accelerated photoinduced charge separation, reduced electron migration distances, and maintained a high redox potential, thereby promoting efficient generation of reactive oxygen species for sulfur conversion. The synergistic interaction between In-TiO 2 and Bi 2 MoO 6 provides a robust platform for efficient, selective, and durable desulfurization under mild conditions. These findings offer a mechanistic framework for designing next-generation S-scheme photocatalysts for environmental remediation and energy-related applications.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Shan Tang,Jiumei He,Chengcheng Wan,Li Jiang,Qianchun Zhang
This study addresses the urgent demand for simple and sensitive online gas monitoring technologies in the field of environmental safety by developing a high-performance cataluminescence (CTL) sensor based on oxygen-vacancy-rich microporous titanium dioxide (Ovm-TiO 2 ) for detecting trace isobutyraldehyde (IBL). The Ovm-TiO 2 material, synthesized via a two-step heating process combined with a KBH 4 treatment, features abundant oxygen vacancy defects on its surface, which are pivotal to enhancing sensor performance. Density functional theory (DFT) calculations unravel the surface-mediated mechanism, the oxygen vacancies serve as active sites, drastically enhancing the chemical adsorption and activation of O 2 on the Ovm-TiO 2 surface, which is the key to boosting the cataluminescence efficiency. The developed sensor exhibits outstanding detection performance for IBL, with a wide linear range (0.0100–5.00 mg/L, R 2 = 0.9997), a low detection limit (3 μg/L), and achieved recovery rates of 87.6%–107% with good reproducibility (relative standard deviation, RSD: 5.3%–9.0%) in practical sample analysis. This work not only provides a viable online monitoring solution for IBL but also elucidates the CTL enhancement mechanism at the atomic level, offering important theoretical foundations and practical insights for designing highly sensitive gas sensors.
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DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 11
·10243-10254
·
IF 6.1
Wenhao Liu,Yanfeng Zhu,Zhihao Liu,Jianxia Gou
Marine corrosion poses a critical threat to the safety of offshore oil and gas facilities. To address the intrinsic drawbacks of pristine TiO2, ZnS/CdS/Ti3+-TiO2 nanotube composites were rationally fabricated via a synergistic strategy combining electrochemical anodization and successive ionic layer adsorption and reaction (SILAR) techniques. Structural and optical characterization confirmed that the as-synthesized composites feature a well-constructed cascade band alignment, which efficiently mitigates the recombination of photogenerated electron–hole pairs. Accordingly, the optimized photoanode delivered a high photocurrent density of 279 µA cm−2. When coupled with 316 stainless steel (316 SS), the composite exhibited a pronounced photo-induced potential of −0.89 V (vs. SCE), achieving a remarkable performance enhancement over pristine TiO2. This enhanced photocathodic protection originates from the synergistic interplay between Ti3+ self-doping and the ZnS/CdS heterojunction: Ti3+ self-doping introduces abundant electron donors to enhance the electrical conductivity of the composite, whereas the ZnS/CdS heterojunction broadens the visible-light absorption range and accelerates the separation and directional migration of photogenerated charge carriers.
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DOI
PubMed
高影响因子
Materials Today Energy
·
2026
·
IF 8.1
Yifan Li,Hongshun Zheng,Tong Zhou,Hao Cui,Haigang Dong,Dongxia Yang,Ke Wang,Weijie Zhan,Boxue Wang,Yun Chen,Jize Li,Yuetong Cao,Zhikun Wang,Yumin Zhang,Jin Zhang,Qingju Liu
TiO 2 has emerged as one of the most extensively studied photocatalysts, because of its great stability and abundant availability. The hydrogen production efficiency of TiO 2 photocatalysts can be significantly enhanced derived from the precursors of titanium-based metal-organic frameworks (MOFs) loaded with single-atom. Although the hydrogen evolution activity of TiO 2 -based photocatalysts under ultraviolet light has been steadily enhanced in recent years, the activity under visible light remains a critical challenge to be addressed. Herein, we report a Zn single atom (Zn SA) loaded TiO 2 -based photocatalyst derived from Ti-BPDC (Ti-MOF). Under irradiation with visible light at 400 nm, the optimized sample exhibits a hydrogen evolution rate (HER) of 9.21 mmol g −1 h −1 with an apparent quantum efficiency (AQE) of 6.82%, with a HER approximately 3 times higher than that of pristine TiO 2 (3.14 mmol g −1 h −1 ), along with great stability. The results demonstrate that loading an appropriate amount of Zn SAs optimizes the band structure of the photocatalyst, activates the adjacent O atoms, and also suppresses the recombination of photogenerated electron-hole pairs, as well as modulates the adsorption-desorption equilibrium of H∗ species, thereby significantly enhancing photocatalytic activity. This work offers a strategy for designing TiO 2 -based photocatalysts with high visible-light activity.
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高影响因子
ChemNanoMat
·
2026
·Vol. 12
·期 1
·e202500720
·
IF 2.6
Xinbing Jiang,Xingyu Jin,Zizhuo Nie,Wenyu Cheng,Yuxi Fei,Bo Peng,Yuhang Liu,Jiuhong Wang,Libo Zhao,Shujiang Ding
Room-temperature ammonia (NH 3 ) detection is crucial for environmental safety and human health. In this study, a ternary PANI@Au-TiO 2 ammonia-sensitive composite was synthesized via in situ polymerization of polyaniline (PANI) with simultaneous reduction of chloroauric acid to form Au nanoparticles, followed by ultrasonic compounding with TiO 2 nanoparticles. The structural and morphological characterization confirmed the uniform distribution of Au and TiO 2 nanoparticles in the PANI matrix. Gas sensing experiments demonstrated that the PANI@Au-TiO 2 sensor exhibited markedly enhanced NH 3 response, achieving a high sensitivity of 0.0527/ppm compared to PANI, PANI@Au, and PANI-TiO 2 counterparts. Moreover, the PANI@Au-TiO 2 ternary composite sensor displayed excellent linearity within the NH 3 concentration range of 3–30 ppm, along with a low detection limit, good repeatability, and high selectivity toward ammonia. The enhanced performance is attributed to the synergistic effects of the p–n heterojunction, Schottky junction, and catalytic activity of Au nanoparticles, which facilitate efficient charge transfer and amplify the interaction with NH 3 molecules. These findings demonstrate that the hybrid sensing film based on PANI@Au-TiO 2 ternary composites exhibits excellent ammonia detection performance at room temperature, thereby offering a promising pathway for the development of advanced ammonia sensors.
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.7
Wenlong Liu,Jin Dang,Yanguang Zhang,Jing Tian,Weibing Li
The limited recovery rate of powdered photocatalysts and potential secondary pollution issues have constrained the practical application of photocatalytic technology. Therefore, it is urgent to develop easily recoverable photocatalysts to address harmful algal blooms. In this study, a simple sol-gel method was used to synthesize a recyclable TiO 2 /FeTiO 3 composite photocatalyst on ceramic membrane for photocatalytic inactivation of Microcystis aeruginosa . TiO 2 /FeTiO 3 photocatalysts exhibit stable algal removal performance under various conditions (natural organic matter content, alkalinity levels et al. ), the TiO 2 /FeTiO 3 -4 photocatalyst with the best performance can achieve 100% photocatalytic inactivation of Microcystis aeruginosa (OD 680 =0.8) within 4 h of light irradiation. TiO 2 /FeTiO 3 photocatalysts can not only inactivate Microcystis aeruginosa , but also degrade intracellular and extracellular organic matter. Free radical scavenging experiments prove that holes play a major role in the photocatalytic inactivation of Microcystis aeruginosa , additionally, cyclic stability tests indicate that the photocatalyst is easy to recover and maintains a degradation rate of 97.19% even after three cycles. The process of preparing recyclable photocatalysts on ceramic membranes provides new ideas for the application of photocatalytic technology in pollutant treatment.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2017
·
IF 6.065
Xiulei Fan,Chao Wang,Peifang Wang,Bin Hu,Xun Wang
Most studies investigating the influence of TiO 2 NPs on heavy metal bioavailability have focused on the aqueous phase; however, few have examined the sediments containing more nanoparticles. Here, we investigated the effects of TiO 2 NPs on heavy metal bioavailability in C. fluminea in sediments. The interactions between the TiO 2 NPs and metals in sediments, the influence of TiO 2 NPs on metals levels in aqueous phase and geochemical speciation were also explored. The results indicated the large adsorption capacity of TiO 2 NPs and the strong adsorption affinity to metals caused the metals adsorbed on nanoparticles, which decreased the metals concentrations in water phase. Changes in metal speciation caused by metals in EXC, CAR, and IMO partly transported from sediments to TiO 2 NPs during the aging of sediments. Heavy metals contents in C. fluminea tissues were in the order of gill > visceral mass > mantle > foot and increased with the increasing TiO 2 NPs contents in sediments. TiO 2 NPs enhanced the bioavailability of metals in the speciation of EXC, CAR, and IMO in sediments by the Trojan horse effects. The results can facilitate a more realistic evaluation of the environmental risks of TiO 2 NPs to benthic organisms in heavy metal-contaminated sediments.
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高影响因子
JOURNAL OF POWER SOURCES
·
2013
·
IF 4.675
Lei Tan,Lei Pan,Chengying Cao,Baofeng Wang,Lei Li
Anatase TiO 2 has attracted much attention as a safe anode material for lithium-ion battery applications, due to its low electronic conductivity and severe aggregation during Li + insertion/extraction processes, the practical application of the anatase TiO 2 is still hindered by poor long-term cycling stability. In order to improve the cycling performance of lithium-ion batteries, a uniform thin nitrogen-doped carbon layer with a thickness of 3–6 nm is successfully coated on the surface of the anatase TiO 2 nanoparticles by using polydopamine as carbon precursor. Compared with the pristine TiO 2 electrode, the carbon coated TiO 2 nanocomposites electrodes show very good capacity retention and cycling performance.
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高影响因子
MATERIALS CHARACTERIZATION
·
2021
·
IF 4.342
Ning Peng,Yongzhao Li,Xiaofei Yang,Libo Liang
The porous hydrous oxide layer obtained from the hydrothermal treatment of etched aluminum foil was used for fabricating the composite TiO 2 -Al 2 O 3 oxide film during anodization of the TiO 2 -coated aluminum foil. The results indicated that the TiO 2 -coated film obtained in the etched tunnels containing hydrous oxide layer was more tightly adsorbed with a more consistent compactness. The porous hydrous oxide layer facilitates the anchoring of TiO 2 sol particle, resulting in the tight coupling of the coated-TiO 2 film and the anodized alumina . Moreover, the porous hydrous oxide layer is beneficial to the migration of the Ti element to form the composite layer. It is indicated from the performance testing that the etched aluminum foil with hydrothermal treatment, and then 2 coating cycles, can improve the specific capacitance observably.
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高影响因子
JOURNAL OF POWER SOURCES
·
2014
·
IF 5.211
Menghua Zhu,Xin Li,Weiwei Liu,Ying Cui
The graphene–TiO 2 nanocomposite has been prepared by mixing graphene oxide (GO) and tetra- n -butyl titanate (TBT) followed by the facile hydrothermal process when the reduction of GO to reduced graphene oxide (RGO) and the hydrolysis of TBT to TiO 2 happen. Characterization of the graphene–TiO 2 nanostructures is investigated in detail by X-ray diffraction, scanning electron microscopy, transmission electron microscopy , and Raman spectroscopy . A dye-sensitized solar cell (DSSC) based on graphene–TiO 2 composite photoelectrode exhibits a high energy conversion efficiency of 4.28%, compared with a DSSC based on pure TiO 2 photoelectrode (3.11%), accompanied by an increment in both short-circuit photocurrent density and open-circuit voltage. The significant enhancement in performance of DSSC is investigated through intensity-modulated photovoltage spectroscopy, intensity-modulated photocurrent spectroscopy, and electrochemical impedance spectroscopy . It is found that the incorporation of two-dimensional graphene nanosheets in the TiO 2 electrodes is the key factor leading to the improved photogenerated electron transfer ability and reduced charge recombination.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2012
·
IF 3.461
Pengwei Huo,Ziyang Lu,Xinlin Liu,Xiaolin Liu,Xun Gao,Jianming Pan,Di Wu,Jun Ying,Huaming Li,Yongsheng Yan
The molecular/ions surface imprinted TiO 2 /fly-ash cenospheres photocatalyst was prepared by molecular imprinted technology with coordination compounds of La 3+ and oxytetracycline as molecular template. The phase, surface structure and light absorption of as-prepared imprinted photocatalyst were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis diffuse reflectance spectra (UV–vis DRS) and Fourier transform infrared (FT-IR), respectively. The preferentially selected degradation and activity of imprinted photocatalyst were evaluated by degradation of different antibiotic waste water. The results indicate that molecular/ions surface imprinted photocatalyst could preferentially degradate tetracycline antibiotic molecular effectively and enhance the photocatalytic activity. The degradation rate of oxytetracycline ligand molecular could reach 76% in 60 min under visible light irradiation. The relatively coefficient of selectivity degradation on oxytetracycline could reach 4.5146 compared with the ciprofloxacin.
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高影响因子
CERAMICS INTERNATIONAL
·
2018
·Vol. 44
·期 7
·8550-8555
·
IF 3.057
Jing Zhang,Yanjing Li,Tingting Gao,Xuefeng Sun,Pei Cao,Guowei Zhou
In this study, flower-shaped TiO 2 /C embedded with fish-scale-like MoS 2 (TiO 2 /C/MoS 2 ) microspheres were synthesized by impregnating MoS 2 into the interspace of TiO 2 /C. The TiO 2 /C/MoS 2 microspheres (diameter of 2–3 µm), which are composed of several homogeneous flake-shaped petals, were then applied as anode in lithium-ion batteries. MoS 2 has a fish-scale shape with size of approximately 10 nm. In addition, MoS 2 is connected to the TiO 2 petal surface. In the flower-shaped TiO 2 /C/MoS 2 microspheres, TiO 2 acts as backbone for MoS 2 that can effectively minimize the strain of volume changes. The fish-scale-like MoS 2 can provide more active sites for reactions. The flower-shaped TiO 2 /C/MoS 2 electrode exhibits a discharge capacity of 621 mA h g −1 at 100 mA g −1 after 100 cycles, which is much higher than that of TiO 2 /C electrode (291 mA h g −1 ) and pure MoS 2 electrode (160 mA h g −1 ). Compared with TiO 2 /C and pure MoS 2 , the structural and compositional features of the TiO 2 /C/MoS 2 microspheres enhance the specific capacity and cycling stability.
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高影响因子
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