CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiaoyang Song,Yan Wang,Xiaohua Ren,Xu Zhao
TiRuSnPt electrodes with nanoporous structure were fabricated. • Sn Pt co-doping enhances TiRu for dual CER and EOP functionality. • TiRuSnPt electrodes efficiently degrades organics mainly via in-situ generated O 3 and 1 O 2 . • 100% BPA degradation maintains over 240 h under periodic polarity reversal. The electrochemical generation of free chlorine and ozone for the degradation of organic pollutants in water holds broad application prospects. While traditional TiO 2 -RuO 2 /Ti (TiRu) electrodes exhibit favorable chlorine evolution performance in chloride-containing systems, their oxidation capability is limited under chloride-free or low-chloride conditions. To extend the applicability of electrodes in various water matrices, this study developed a TiRuSnPt electrode with simultaneously enhanced electrochemical chlorine evolution (CER) and electrochemical ozone production (EOP) via a tin‑platinum co-doping on TiRu strategy. The TiRuSnPt electrode achieves excellent CER activity that exhibits a Faradaic efficiency (FE) of 67% under low-chloride conditions at 50 mM Cl − . Moreover, the incorporation of tin and platinum enhances the EOP capability of TiRu, overcoming the limitations of conventional TiRu in chloride-free systems for water purification. In chloride-free electrolytes, the ozone and reactive oxygen species generated by TiRuSnPt can efficiently degrade various organic pollutants, such as bisphenol A (BPA) that achieving 99.7% removal within 6 min. TiRuSnPt exhibited high stability under polarity reversal conditions, that can maintain 100% BPA removal and over 80% of total organic carbon removal in a continuous BPA degradation system for more than 240 h. The high stability was due to tin‑platinum co-doping on TiRu, of which the accelerated lifetime increases by 2.6 times for TiRuSnPt compared to TiRu. This work provides a feasible strategy for developing multifunctional TiRuSnPt electrodes with high-efficiency chlorine evolution and ozone production capabilities, thereby broadening their application scopes in water treatment. Download: Download high-res image (159KB) Download: Download full-size image
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JOURNAL OF MOLECULAR STRUCTURE
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2025
·
IF 4.7
Jun Guo,Ruixin Chen,Wei Gan,Zifeng Wang,Xiaofen Xu,Deshuo Meng,Miao Zhang,Zhaoqi Sun
Antibiotics have garnered significant interests because of their harmful effects on non-target aquatic organisms, photocatalysis is an important technique for their removal. However, the photodegradation pathways, the toxicity of intermediates and the photodegradation mechanism of antibiotics are still unclear. In this study, Gatifloxacin was picked as the antibiotics’ representative via theoretical calculations and experiments to gain a comprehensive understanding of its decomposition pathways, the toxicity of intermediates, and the photodegradation mechanism on the Au-Black-TiO 2 nanorod arrays system. The highest photodegradation rate of Gatifloxacin is up to 92.6 %, with a reaction rate constant value of 0.00437. Moreover, three potential photodegradation pathways for Gatifloxacin were proposed based on density functional theory (DFT) and LC-MS experiments. Additionally, the toxicity of intermediates produced during the photodegradation of Gatifloxacin was assessed using quantitative structure-activity relationship (QSAR), revealing a decreased level of toxicity. Furthermore, the superior photodegradation mechanism and possible charger transfer pathways were also investigated. In conclusion, this research suggests a potential approach to understand the pathways, toxicity assessment, and mechanism insight during the antibiotics’ photodegradation process.
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Journal of Physical Chemistry C
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2025
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IF 3.2
Yanan Qiao,Wenqin Yang,Daqian Xiao,Houde She,Xiaoping Chen,Jingwei Huang,Lei Wang,Qizhao Wang
Titanium dioxide (TiO2) is considered a promising metal oxide due to its good stability and appropriate conduction band potential. However, photocatalytic carbon dioxide reduction solely with TiO2 is still limited by the low solar energy conversion efficiency. To enhance the photocatalytic carbon dioxide reduction performance, researchers synthesized a composite material based on Er-doped TiO2 and Ce-modified UiO-66(Zr) using a simple solvent evaporation method. The experimental results reveal that compared with pristine UiO-66, this composite material exhibits a significantly improved CO2 conversion rate and product selectivity. The excellent activity of this catalyst is attributed to the direct Z-type heterojunction, which greatly improves photogenerated charge separation. Furthermore, UiO-66 (Zr/Ce)/Er-TiO2 (henceforth U1(0.5% Er-T3)) composite material exhibited excellent cycling stability in five consecutive stability tests, indicating long-term application potential. This research underscores the importance of designing and modifying MOF-based photocatalysts for efficient CO2 reduction and provides valuable insights for the development of sustainable energy conversion systems.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Jiacheng Zhang,Zixin Xie,Zhangyuan Chen,Xihong Zu,Jiayi Zheng,Wenli Zhang,Dongjie Yang,Xueqing Qiu
Biomass flow fuel cells (BFFCs) are effective energy conversion technologies for converting biomass into electricity to realize a sustainable society. However, most of them depend on the thermal degradation of biomass, which is energy consumption and induces biomass polycondensation. Herein, we develop a novel solar-driven BFFC for converting lignin into electricity under sunlight at room temperature based on FeCl 3 /TiO 2 synergetic mediators, which endow a broad photo-absorption range and enhance absorption intensity for high photocatalytic activity. A new electron transfer chain is constructed by employing Fe 3+ to obtain electrons and efficiently promote electron-hole separation of TiO 2 . Meantime, the generated ·OH can depolymerize lignin rapidly. The BFFC achieved a power density of 64.4 mW/cm 2 at room temperature via sunlight irradiation with sodium lignosulfonate as fuel when paired with VO 2 + /VO 2+ catholyte. It can stably discharge and power LED light successfully. This work provides a sustainable and energy conservation approach for developing advanced biomass fuel cells.
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Results in Chemistry
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2025
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IF 4.2
Wei Zhang,Ku Yu,Wang Aihe
In this study, pyridine-a representative nitrogen-containing heterrocylic contaminant in coal chemical wastewater-was targeted for photocatalytic degradation. We developed a novel ternary composite photocatalyst through the in-situ integration of layered double hydroxide (LDH) and iron-based metal-organic framework (MIL-101(Fe)) with lanthanum‑iron co-doped TiO 2 via hydrothermal synthesis. These contaminants are characterized by high environmental persistence, low biodegradability, and potential teratogenic/carcinogenic risks. The synthesized LDH/MIL-101(Fe)/La-Fe-TiO 2 composite was systematically characterized using scanning electron microscopy (SEM), UV–Vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) analysis. Key findings revealed that: (1) The composite architecture achieves an exceptional specific surface area of 168.96 m 2 /g through synergistic LDH/MIL-101(Fe) integration; (2) La–Fe co-doping effectively extends the photoresponse threshold of TiO 2 to the visible-light region. Under optimized conditions (25 °C, 300 rpm agitation, 400 W irradiation), the system achieved 96.1 % pyridine degradation (initial concentration: 100 mg/L) within 4 h, following pseudo-first-order kinetics (R 2 = 0.99). Remarkably, the catalyst maintained 94.5 % efficiency after five consecutive cycles, demonstrating superior stability. Mechanistic investigations combining GC–MS analysis, electron paramagnetic resonance (EPR) detection, and radical quenching tests identified the reactive species activity sequence as ∙ h + > ∙ OH > O 2 − , ultimately elucidating the complete pyridine mineralization pathway.
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Journal of Materials Chemistry C
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2025
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IF 5.1
Dahui Feng,Han Zhao,Yanhua Song,Ruyan Xie,Xiaozhen Zhang,Shuzhe Zhang,Peng Chen,Haifeng Zou
Visible light-driven carbon dot/defect titanium dioxide (CDT) nanocomposites were synthesized utilizing a straightforward solvothermal in conjunction with a wet chemical method. The CDT demonstrated a markedly enhanced capability for dye degradation under visible light, achieving a catalytic activity of up to 0.2485 min−1 for a 20 mg L−1 rhodamine B (RhB) solution, which is 21.6 times greater than that of commercial TiO2 (P25). The observed enhancement in visible light photocatalytic activity is attributed to the synergistic effects of oxygen vacancies and carbon dots (CDs), which synergistically improved the CDT's response to visible light and mitigated charge carrier recombination. The defects induced by oxygen vacancies function as electron capture centers, optimizing the bandgap structure and effectively facilitating the separation of electrons and holes. Meanwhile, the loading of CDs effectively modulated the concentration of oxygen vacancies, significantly enhancing the carrier separation efficiency and migration rate of the composites. Moreover, under various environmental conditions and across multiple cycles, the material consistently exhibited commendable degradation efficiency, high catalytic activity, cycling stability, and robust resistance to environmental interference in the degradation of RhB. Notably, free radical capture experiments indicated that the primary active species in the photodegradation process transitioned from superoxide radicals (˙O2−) and hydroxyl radicals (˙OH) to superoxide radicals (˙O2−) and holes (h+), thereby confirming the existence of a type II heterojunction at the interface between the CDs and TiO2, and proposing a plausible photocatalytic mechanism. This study presents an effective, environmentally friendly, and convenient methodology for the preparation of efficient photocatalytic composites characterized by defects and heterojunctions, thereby significantly advancing the research and application of catalysts for the removal of recalcitrant organic pollutants under visible light.
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RSC Advances
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2016
·Vol. 6
·期 86
·83406-83411
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IF 3.289
Gao-Ming Hou,Ming-Qiu Zhang,Yi-Fu Huang,Wen-Hong Ruan
This paper has reported a new polymer nanocomposite of nano-titanium dioxide/polyethylene oxide (TiO2/PEO) incorporated with in situ synthesized hyper-branched poly(amine-ester) (HBPAE) and its application as a polymer electrolyte. Firstly, the HBPAE/HBPAE-g-TiO2/PEO is obtained by synthesizing HBPAE in methyl acrylic acid methyl ester grafted TiO2 (MMA-g-TiO2)/PEO, to simultaneously form the hypergrafted polymer on the nano inclusions (HBPAE-g-TiO2) and hyperbranched particles dispersed in the PEO. Then the Li2SO4 is introduced to prepare the polymer electrolyte, and the relevant structure and properties are studied. It is found that the incorporation of HBPAE into TiO2/PEO can benefit the ionic transportation of the composite electrolyte, and can bridge the nano inclusions which further improves ionic conductivity. The best ionic conductivity of the HBPAE/HBPAE-g-TiO2/PEO polymer electrolyte with 15 wt% TiO2 content can reach as high as 3.2 mS cm−1, which is ∼10 times of that of the PEO electrolyte and ∼28% of that of the HBPAE-g-TiO2/PEO electrolyte without homopolymer component. Furthermore, the optimized polymer electrolyte is assembled into a LiTi2(PO4)3//LiMn2O4 lithium-ion battery, with better excellent cell performance compared with the PEO electrolyte. This study shows that the new polymer nanocomposite has great potential for the assembly of high performance solid electrochemical devices.
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高影响因子
CERAMICS INTERNATIONAL
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2016
·Vol. 42
·期 6
·7373-7379
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IF 2.758
Dezhi Hu,Zhihong Li,Yumei Zhu
The synergistic effect of ZnF 2 –TiO 2 –SiO 2 and seeds on the sintering behavior and microstructure of corundum abrasive was investigated. Significant improvement on microstructural homogeneity, densification and mechanical property was achieved by the co-doping and two step sintering (TS) for the abrasive samples. All the doped samples showed relative densities higher than 98% and single particle compressive strengths larger than 30 N. Besides, the two-step sintering samples attained smaller particle sizes, slightly higher densities, and narrower particle size distributions . Sample sintered by TS method with MgTiO 3 seed and the addition of ZnF 2 /TiO 2 /SiO 2 in the molar ratio of 5:7:5 obtained single particle compressive strength of 56.3 N, theoretical density of 99.4% and an average grain size of 0.46 μm. The phase transformation temperatures of doped samples were much lower than that of un-doped ones and they dropped significantly as the content of ZnF 2 raised. The relationship between microstructure and mechanical properties was also discussed.
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高影响因子
ELECTROCHIMICA ACTA
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2013
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IF 3.777
Xiao Peng,Yaqing Feng,Shuxian Meng,Bao Zhang
The TiO 2 photoelectrode containing pores of different sizes was fabricated by adding various amounts of polystyrene microspheres (188 nm) into the TiO2 paste, which was used as template agent during the sintering process. On the one hand, it was found that the photoelectrode with appropriate size of pores was beneficial for the enhancement of photovoltaic performance of the corresponding dye-sensitized solar cells (DSSCs) via efficient utilization of incident light. On the other hand, the presence of large pores would also tend to reduce the amount of dye-uptake resulting in the decrease of cell performance. Furthermore, a multi-layered stacking architecture of TiO 2 nanoporous film with pore size gradually increased from bottom FTO glass to the top of the film was developed and used as photoelectrode in DSSCs with N719 as the sensitizer. The photoelectric conversion efficiency of 7.80% was realized which is 17.6% higher than that obtained for DSSCs containing TiO 2 nanoporous films with uniform size of pores. UV–vis spectra measurement and electrochemical impedance spectroscopy analysis were carried out for further studying the effect of the pore size and the stacking pattern on the photoelctronic and electrochemical properties of the resultant DSSCs.
研究领域:
材料科学
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光伏技术
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纳米材料
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能源材料
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电化学
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高影响因子
Small
·
2022
·Vol. 18
·期 16
·2200694
·
IF 15.153
Qianli Cai,Xinglong Li,Ertao Hu,Zhongyue Wang,Peng Lv,Jiajin Zheng,Kehan Yu,Wei Wei,Kostya (Ken) Ostrikov
Anatase TiO 2 is a promising anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs) due to its high specific capacity, low cost, and excellent cycle stability. However, low electrical conductivity and poor Na + ion transport in TiO 2 limit its practical applications. Here, substantially boosted Na + ion transport and charge transfer kinetics are demonstrated by constructing a near-ideal non-rectifying titanium carbonitride/nitrogen-doped TiO 2 (TiC x N 1– x /N-TiO 2 ) heterostructure. Owing to the fast plasma effects and metastable hybrid phases, the TiC x N 1– x is epitaxially grown on TiO 2 . Energy band engineering at the interface induces high electron densities and a strong built-in electric field, which lowers the Na + diffusion barrier by a factor of 1.7. As a result, the TiC x N 1– x /N-TiO 2 electrode exhibits excellent electrochemical performance. The reversible specific capacities at rates of 0.1 and 10 C reach 312.3 and 173.7 mAh g −1 , respectively. After 600 cycles of charge and discharge at 10 C, the capacity retention rate is 98.7%. This work discovers an effective non-equilibrium plasma-enabled process to construct heterointerfaces that can enhance Na + ion transport and provides generic guidelines for the design of heterostructures for a broader range of energy storage, separation, and other devices that rely on controlled ionic transport.
研究领域:
材料科学
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储能
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电化学
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纳米技术
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等离子体物理
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高影响因子
Particuology
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2026
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IF 4.3
Ye Wang,Yuxin Xie,Xiaojing Guo,Xi Yan,Yan Chen,Ping Hu,Peng Cheng,Wanzhong Lang
The solid-state synthesis of H 2 TiO 3 (HTO) lithium ion-sieves is highly sensitive to the particle size of the TiO 2 precursor, which governs both structural properties and ultimate adsorption performance. This study reveals a striking morphological convergence during the synthesis of Li 2 TiO 3 (LTO) intermediates: despite employing TiO 2 precursors spanning 15-40 nm, the resulting LTO particles consistently exhibited a narrow size range of 28-32 nm, indicating a distinctive size-regulation mechanism in the solid-state reaction. In contrast, precursors ≥60 nm led to fragmented structures with reduced crystallinity. Leveraging this finding, we identified 40 nm as a critical precursor size for crafting optimal HTO adsorbents. The 40 nm-derived HTO (40-HTO) delivered a superior equilibrium Li + adsorption capacity of 58.02 mg g -1 , a pseudo-second-order rate constant 2.3-fold higher than that of its 150 nm-derived counterpart, and exceptional cyclic stability (<0.15% Ti dissolution over 10 cycles). Importantly, in a simulated concentrated brine with a high Mg 2+ /Li + mass ratio of 20, 40-HTO maintained a high Li + uptake of 36.5 mg g -1 and exhibited exceptional selectivity, with a separation factor as high as 780. This work underscores precursor size engineering, targeting a critical size threshold, as a vital strategy for developing high-efficiency lithium ion-sieves.
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高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2026
·
IF 4
Runze Dong,Dakuo Liu,Pengfei Qu,Wenhao Li,Dong Fu
This study proposes a novel approach for synergistically degrading sulfur hexafluoride (SF 6 ) using dielectric barrier discharge (DBD) combined with TiO₂/CeO₂ photocatalysis. By introducing UV-responsive TiO₂, the photocatalytic activity of the catalyst was significantly enhanced, thereby improving the overall degradation performance for SF 6 . Under the conditions of a Ti/Ce molar ratio of 0.05:0.95 and an input power of 60 W, a degradation efficiency (DRE) of 99.99% was achieved when degrading 2% SF₆. Compared with pure CeO 2 (with a DRE of 92.44%), the DRE has increased by 7.55%, and the selectivity of SO 2 in the product has also significantly improved, indicating that the doping of TiO 2 promotes the more complete degradation of SF 6 . Compared to using DBD alone, the DRE increased by 4.7 times, and the energy yield (EY) increased by 12.78 g/kWh. Density functional theory (DFT) calculations indicate that the TiO₂/CeO₂ composite catalyst enhances the surface adsorption capacity for SF 6 molecules. Mechanistic analysis further revealed that the UV light generated by DBD excites TiO₂/CeO₂ to produce photogenerated electron-hole pairs, while the high-energy electrons in the plasma region effectively suppress carrier recombination. This study confirms the significant potential of the DBD-photocatalysis synergistic system for treating highly stable SF 6 .
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