Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Peng Qiao,Jianwei Zhang,Wenyi Wang,Yijie Lin,Meiru Zheng,Xin Guo,Yibo Liu,Yuanyuan Wang,Jiaojing Zhang,Hua Song,Xueqin Wang
Developing semiconductors with optimal bandgaps and enhancing their photocatalytic performance remain key challenges in achieving efficient hydrogen evolution from water splitting. TiO 2 nanoflowers with open architectures, which provide abundant active sites, show significant potential in this field. Additionally, the construction of photocatalysts using S-scheme heterojunctions has been proven to improve redox capacity, while the introduction of oxygen vacancies has been shown to increase efficiency. Therefore, in this study, NiS-loaded TiO 2 nanoflowers were fabricated by a simple template-free solvothermal method. Oxygen vacancies were constructed by partially reducing the composite with a low NiS concentration. The synergistic effect of the oxygen vacancies and heterojunctions greatly improved the visible-light response of the catalyst, and the degradation rate of rhodamine B reached 99.81 % in 3 h under visible light. The transient photocurrent response of 1.0 wt% NiS-TiO 2 nanoflowers was 47.52 μA·cm −2 and the rate of hydrogen evolution achieved 1782.28 μmol·g −1 ·h −1 , approximately 6.5 times higher than that of pristine TiO 2 nanoflowers. The transfer process of electrons was verified by calculation using density functional theory, and an electron transport mechanism for the S-scheme heterojunction is also proposed to illustrate the photocatalytic mechanism. The as-prepared NiS-loaded TiO 2 nanoflowers could be prime candidate for the photocatalytic hydrogen evolution from water splitting and degradation of organic pollutants.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Long Jiang,Hao Deng,Heng Yang,Pengliang Liang,Shuying Shi,Minyan Yang,Yanyan Chen,Jing Yin,Ailin Yang,Yan Liu,Ying Xiong
Rhenium (Re), as a high-value metal, plays a significant role in many strategic fields, but not has independent mineral sources worldwide and mainly exists as an associated with other mineral resources. The associated rhenium in uranium (U) ore is of great concern. Herein, we propose a novel photocatalytic strategy to extract rhenium from mixed waste liquid after uranium mining. A typical bronze phase TiO 2 (B) photocatalyst was prepared by a simple hydrothermal treatment method, and were characterized by various spectroscopic techniques. The special energy band and morphology of TiO 2 (B) facilitate the photogenerated carrier separation and transfer. The photocatalytic performance of the material for Re(VII) in the absence or presence of U(VI) was investigated. The results indicate that under the irradiation of simulated sunlight, TiO 2 (B) can completely extract rhenium from the rhenium/uranium mixed waste liquid with a concentration of 0.1–1 mg L −1 Re(VII) at pH = 0, and then sequentially extract U(VI) (10 mg L −1 ) at pH = 5 through adsorption and photocatalysis. After photocatalytic reaction, soluble Re(VII) was reduced to Re(VI), and then disproportionated to insoluble Re(IV). Compared with the reported photocatalysts, the photocatalytic Re(VII) reduction on TiO 2 (B) was directly achieved only by photogenerated electrons. The advantage of TiO 2 (B) lies in its wider bandgap and more negative conduction band potential, which makes the extraction of rhenium from aqueous solution through a feasible and green photocatalytic pathway.
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高影响因子
RSC Advances
·
2026
·Vol. 16
·期 10
·9280-9292
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IF 6.1
Wenqian Wu,Weiye Yang,Jiuming Zhong,Hongyan Peng,Lijian Meng,Shihua Zhao
In this research, anatase-phase SiO2@TiO2 spherical photocatalysts were fabricated by the sol–gel method. Comprehensive characteization was performed through SEM, XRD, BET, XPS, PL, and UV-vis spectroscopy to elucidate the materials' morphology, crystal structure, composition, and optical properties. The photocatalytic performance was assessed through degradation rate of Rhodamine B (RhB). The catalyst annealed at 550 °C for 5 h exhibited exceptional activity and degraded 99.75% of RhB under UV light in 40 minutes, revealing a performance surpassing most literature reports. Notably, it retained over 83% efficiency after four cycles, attesting to its robust stability. Moreover, the annealing time exerted little effect on the photocatalytic activity of the photocatalyst. The free radical trapping experiment suggested that under visible light, hydroxyl radicals (˙OH) dominated RhB degradation, while holes (h+) and superoxide radicals (˙O2−) contributed auxiliary roles. Furthermore, the impact of calcination parameters (temperature, duration), and catalyst addition amount, on the degradation of RhB, and the degradation ability of different pollutants was also systematically evaluated. These findings provide valuable insights for optimizing photocatalyst preparation and application.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
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IF 6.7
Chao Chen,Meng-Han Li,Ya-Yun Ma,Guo-Zhi Han
Photo-deposition method has the advantages of simplicity, environmental friendliness, and high efficiency, and has been widely used in the field of materials preparation. In this paper, we firstly prepared hollow black TiO 2 microspheres by template method, then using the mesoporous hollow microspheres as a carrier, NiCl 2 ·6 H 2 O as raw material, a novel kind of hollow Ni(OH) 2 @TiO 2 composite microspheres was prepared by photochemical deposition. Characterization of X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), fluorescence spectrophotometry (PL), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) indicated that the two units of TiO 2 and Ni(OH) 2 in the composite hollow microspheres form tightly chemical connections. More importantly, this chemical connection endowed the two functional units with mutually enhanced catalytic performance for reduction of aromatic nitro compounds and photocatalytic degradation of emerging organic pollutants. For example, it can catalyze the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH 4 with a k value of 0.8457 min −1 , as well as degrade tetracycline hydrochloride (TCH) with a degradation rate of 92.29% within 60 min with a k value of 0.0606 min −1 , which is superior to most previous reports. Finally, based on a series of control experiments, a plausible mutually enhanced catalytic mechanism was proposed.
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JOURNAL OF BIOMATERIALS APPLICATIONS
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2026
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IF 2.4
Wen Han,Yijiao Yuan,Yurong Chen,Wei Wang,Chunhui Lu
Peri-implantitis, a leading cause of dental implant failure, is primarily attributed to suboptimal soft tissue sealing at the implant-tissue interface, which facilitates bacterial colonization and subsequent inflammatory responses. Surface modifications on titanium can expedite good soft tissue sealing and antibacterial action. We engineer titanium surfaces with ultraviolet light-functionalized titanium dioxide nanotubes (UV-TNTs) to achieve good soft tissue sealing and antibacterial effect. Surface properties were characterized via scanning electron microscopy (SEM), surface roughness analysis, wettability assessment and methylene blue (MB) degradation. Antibacterial performance was quantified using Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) viability assays. Soft tissue integration was evaluated through fibroblast proliferation assays and immunofluorescence staining of vinculin and collagen type I. The UV-TNTs demonstrated significantly enhanced antibacterial efficacy and promoted fibroblast proliferation, adhesion and collagen deposition to improve soft tissue sealing. This surface modification strategy offers a promising approach for enhancing implant biocompatibility and long-term stability, offering useful references for advanced implant design and fabrication.
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PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2026
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IF 6.7
Yunpeng Xu,Dongbo Zhang,Ziwen Ma,Qiu Liu,Jicheng Yu
Amantadine (AMN) is a persistent and structurally recalcitrant antiviral contaminant. In this work, a recoverable Pt/TiO2 porous ceramic composite was fabricated by photodeposition and ceramic immobilization for UV-driven AMN degradation. Under Box-Behnken-optimized conditions (1.5 wt % Pt loading, catalyst dosage 2.0 g/L, and initial pH 9.0), AMN removal reached about 72% within 4 h, and the catalyst retained >50% removal after six cycles with low Pt leaching. Scavenger experiments indicated that h+ and •O2– were the dominant reactive species, and HPLC-MS identified six transformation products, from which two tentative degradation pathways were proposed. QSAR-based evaluation suggested lower bioaccumulation potential and reduced developmental toxicity for most terminal products, although incomplete predictions for some species warrant caution. These results support immobilized Pt/TiO2 photocatalysis as a practical strategy for AMN-contaminated water treatment.
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PubMed
高影响因子
Exploration
·
2026
·
IF 30.4
Weiwei Wang,Chun Lu,Xiaoxiao Liu,Wenlong Yang,Jie Zhou,Chenyao Hu,Xin Li,Guangze Nie
Sonopiezo-mediated heterogeneous catalysis is a promising technology for efficient removal of organic pollutants from wastewater. Nevertheless, it is challenging in real water matrix with coexisting ions due to the rather-limited selectivity of reactive oxygen species if any. Herein, a sonopiezo-triggered singlet oxygen evolution system for selective removal of tetracycline hydrochloride (TCH) was rationally designed by SrTiO 3 -TiO 2 heterojunction with a TiO 2 -terminated SrTiO 3 S-scheme interfacial structure. SrTiO 3 -TiO 2 heterojunction exhibits a dramatically expanded piezoelectric constant ( d 33 ), which produces a synergistic effect on improving the separation and transfer efficiency of charge carrier for efficient TCH degradation. Moreover, SrTiO 3 -TiO 2 heterojunction presents a high sonopiezo-current, which attractively indicates that SrTiO 3 -TiO 2 heterojunction has a potential capacity of charge separation under sonopiezo initiation. Remarkably, the mechanism was identified as the continuous generating of singlet oxygen ( 1 O 2 ), in which the sonopiezo-generated electrons trigger the formation of superoxide anion radical (•O 2 − ) and its subsequent transformation to generate 1 O 2 by expending more sonopiezo-generated holes. These findings provided new insights towards developing nonradical system for effective and selective oxidation of electron-rich pollutants via sonopiezo-catalytic process.
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高影响因子
Functional Materials Letters
·
2019
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IF 1.388
Lin Zhao,Yanzhao Xie,Qiuyu Lin,Rongze Zheng,Yong Diao
A series of composite catalysts of C, N and P co-doped TiO 2 were prepared by sol-gel method, using a biomass (soluble starch) dopant. The samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflectance spectroscopy (DRS), fourier transform infrared (FTIR) spectroscopy. The results show that TiO 2 is co-doped with C, N and P by one step. The resulting composite exhibited higher specific surface area, wider visible-light absorption band with respect to the pure TiO 2 . The sample calcined at 400 ∘ C for 2 h with a doping amount of 6 g soluble starch showed the best electrochemical performance. The C, N and P co-doped TiO 2 was also used for the degradation of methylene blue (MB) and degradation ratio was up to 98% in 80 min under visible light irradiation.
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高影响因子
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
·
2020
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IF 1.706
Xuehui Liu,Ma Zheng,Tong Hongtao,Li Kaiwei,Hou Baorong
Smart containers can be produced with polyelectrolyte multilayers that can release inhibitors in response to environmental changes at the coating defects. In this study, mesoporous TiO2 hollow spheres were adopted as carriers for the encapsulation of corrosion inhibitor. The inhibitor-loaded TiO2 containers were modified by polyelectrolyte shells using layer-by-layer self-assembly technology. The release behaviour of the encapsulated inhibitor was investigated using UV–visible spectroscopy. Corrosion protection performance of the epoxy coating with polyelectrolyte-modified TiO2 containers was studied using electrochemical impedance spectroscopy and scanning Kelvin probe (SKP) techniques. Epoxy coating with the polyelectrolyte-modified TiO2 containers provided better barrier properties than that of the blank coating. Waterborne epoxy coating impregnated with the polyelectrolyte-modified TiO2 containers presented a significant self-healing effect after immersion in 0.5 M NaCl solution from the SKP results.
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高影响因子
Journal of Water Process Engineering
·
2026
·
IF 6.6
Jing Zhang,Jiale Li,Kun Zhang,Yingyi Li,Yanting Zhang,Nan Jiang,Peng Chen,Ming Zhang,Meitong Li
Efficient separation of immiscible organic liquids and oil/water mixtures remains a critical bottleneck in industrial wastewater management due to their similar polarities and surface energies. A TiO 2 -functionalised stainless steel mesh (TiO 2 -SSM) was fabricated through a scalable sol−gel dip-coating route, with TiO 2 (8.0)-SSM (8.0 vol% TBOT) as the optimal architecture. Pre-wetting with a high-polarity liquid generates a stable liquid-infused interface that can be tuned on demand, endowing the membrane with exceptional underliquid superlyophobicity toward low-polarity liquids. The membrane separates at least 23 different liquid mixture pairs, with efficiencies exceeding 99% for 20 of these pairs and a excellent flux of 34,200 L·m −2 ·h −1 for formamide/n-hexane. The membrane exhibits exceptional durability, with <2% efficiency decline after 50 cycles, intact performance after 30 abrasion tests, and robust resistance to acid, alkali, and saline environments. Notably, TiO 2 (8.0)-SSM combines robust mechanical/chemical stability with remarkable photocatalytic activity, achieving >98.3% degradation of MB solution under simulated solar irradiation. This polarity-switchable TiO 2 (8.0)-SSM enables simultaneous separation and degradation of complex wastewater containing both immiscible liquids and soluble pollutants, offering a cost-effective solution for industrial wastewater treatment and resource recovery.
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高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 9
·095501
·
IF 1.449
Mengqin Kong,Hang Hu,Kui Qin,Binghai Dong,Li Wan,Pengfei Guo
Here, morphology-controllable compact titanium dioxide (CP-TiO2) films were fabricated on fluorine-doped tin oxide (FTO) substrates as the hole-blocking layers via different ways, including spin coating, magnetron sputtering and atomic layer deposition. A series of planar heterojunction perovskite solar cells (PSCs, FTO/CP-TiO2/CH3NH3PbI3/C) were constructed using carbon as the counter electrodes in ambient air, which exhibited the advantage of low-cost, highly stable, and hole-conductor-free. The CP-TiO2 films with various morphologies were systematically investigated, which played an important role in the blocking effect and interfacial contact within PSC. Compared with the spin coating and magnetron sputtering methods, the PSCs realized by atomic layer deposition method with free pinholes, high coverage, excellent uniformity and high thermal stability suggest a better efficiency and repeatability in these devices. All these results evidently suggest a feasible route to the design of high-performance heterostructure perovskite solar cells for potential applications in new energy field.
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高影响因子
ENERGY CONVERSION AND MANAGEMENT
·
2016
·
IF 4.801
Jian Huang,Yurong He,Li Wang,Yimin Huang,Baocheng Jiang
With water scarcity becoming an increasingly critical issue for modern society, solar seawater desalination represents a promising approach to mitigating water shortage. In addition, solar seawater desalination shows great potential for mitigating the energy crisis due to its high photo-thermal conversion efficiency. However, the increasing contamination of seawater makes it difficult to generate clean water through simple desalination processes. In this work, clean water is generated by a newly designed bifunctional Au@TiO 2 core-shell nanoparticle film with a high photo-thermal conversion efficiency that is capable of photocatalysis and solar evaporation for seawater desalination. Bifunctional films of Au@TiO 2 core-shell nanoparticles with good stability were prepared. It was found that the formation of the core-shell structures played a key role in promoting the photo-thermal conversion efficiency and the evaporation of seawater, while the photocatalytic function demonstrated herein could contribute to the purification of polluted seawater. Furthermore, the film structure can serve to concentrate the NPs for the photo-reaction, as well as heat for water evaporation, improving both the photo-reaction efficiency and photo-thermal conversion efficiency. This efficient approach to solar seawater desalination, which combines evaporation with the photodegradation of pollutants, could help to address the dual issues of water scarcity and water pollution.
研究领域:
材料科学
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环境工程
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纳米技术
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太阳能利用
·
水净化
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高影响因子
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