JOURNAL OF POWER SOURCES
·
2016
·
IF 6.333
Ya-Ping Que,Jian Weng,Lin-Hua Hu,Ji-Huai Wu,Song-Yuan Dai
The morphology, microstructure and crystallography of titanium dioxide (TiO 2 ) have great effect on the photoelectric performance of dye-sensitized solar cells (DSSCs). Herein, flower-like 3D TiO 2 microstructures based on well-defined high-crystalline nanosheets are synthesized through a facile hydrothermal method . Especially, morphological evolution process and mechanism of this hierarchical structure are investigated. Due to the highly crystalline nature and smaller surface area of these nanosheets , the corresponding device shows an extremely high open-current voltage up to 0.84 V, which results from the less electron recombination. When applied as a scattering layer on top of the nanoparticle layer, the power conversion efficiency (PCE) can be significantly improved and give birth to a PCE value of 9.6%, which is 24.6% higher than that of an analogous device using nanoparticles (NP) (7.7%). As reflected by diffusion reflection spectra, intensity of the modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) and electrochemical impedance spectra (EIS), this hierarchical structure can not only enhance light harvesting, but also reduce electron recombination, facilitate electron transport and improve electron collection efficiency.
✓ 已验证
DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2013
·Vol. 45
·期 13
·1878-1883
·
IF 1.22
Pingfan Du,Lixin Song,Jie Xiong,Can Cui
Dye-sensitized solar cells (DSSCs) are generally viewed as next generation photovoltaic devices. Electrospun TiO 2 nanofibers (NFs) film can be used to construct photoanode for DSSCs. A systematic strategy to optimize such a novel photoanode material of DSSCs was elaborated in this paper. A main drawback of NFs photoanode is the poor adhesion of ceramic NFs film to its conductive glass substrate. This problem can be well solved by sandwiching a transition layer between the overlaid NFs film and the underlaid glass substrate through an interfacial spin-coating pre-treatment. After electrospinning, a controllable calcination is also indispensable for obtaining an ideal nanofibrous mat with good morphology and adhesion. The choice of calcination parameters including temperature, holding time, and heating rate was discussed in detail. In addition, a surface TiCl 4 post-treatment can further improve adhesion as well as strength for the NFs photoanode film. And the performance of the resulting DSSCs will benefit from the TiCl 4 post-treatment. Copyright © 2013 John Wiley & Sons, Ltd.
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Fuge Chai,Jing Wang,Siyi Sun,Yongping Dong,Mingfu Ye
Cathodic ECL of TiO 2 was greatly enhanced by carboxylated MWCNTs. • TiVC MXene QDs were loaded onto MOF to form stable nanocomposite. • TiVC/MOF nanocomposite exhibited inhibiting effect on the cathodic ECL of TiO 2 . • An ECL sensor for chloramphenicol was fabricated based on its inhibiting effect. In this study, TiO 2 nanoparticles were employed as novel luminophore to obtain cathodic electrochemiluminescence (ECL) signal in the presence of K 2 S 2 O 8 under neutral aqueous condition. Carboxylated multi-walled carbon nanotubes (f-MWCNTs) served as co-reactant accelerators to facilitate the reduction of K 2 S 2 O 8 , resulting in greatly enhanced cathodic ECL signal. TiVC MXene quantum dots (TiVC QDs) were loaded onto MOF to form stable nanocomposite (TiVC/MOF) which could effectively suppress the cathodic ECL emission by blocking interfacial electron transfer and consuming SO 4 •− via chemical reaction. Based on the inhibiting effect of TiVC/MOF nanocomposite, an “off-on” mode ECL sensor was fabricated for the sensitive detection of chloramphenicol (CAP). Under the optimal condition, the proposed sensor exhibited a linear range of 0.1 μM-6 μM with a detection limit of 3.62 nM. Moreover, the ECL sensor showed satisfactory analytical performance in real samples, offering a reliable strategy for the sensitive detection of CAP. Carboxylated multi-walled carbon nanotubes (f-MWCNTs) could act as co-reactant accelerators to greatly enhance the cathodic ECL of TiO 2 nanoparticles. TiVC MXene QDs were loaded onto MOF to form stable nanocomposite (TiVC/MOF) which could effectively suppress the cathodic ECL emission. Based on the inhibiting effect of TiVC/MOF nanocomposite, an “off-on” mode ECL sensor was fabricated for the sensitive detection of chloramphenicol (CAP). The ECL sensor showed satisfactory analytical performance in real samples, offering a reliable strategy for the sensitive detection of CAP. Download: Download high-res image (178KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yi Wen,Chenguang Qian,Xiaohan Li,Ruizhe Sang,Fang Yuan,Chunquan Li,Zhiming Sun
The development of heterojunction photocatalysts is pivotal in enhancing charge transfer and inhibiting the recombination of photoexcited electron-hole pairs, which is an effective strategy to improve CO 2 conversion. In this study, we have been assembled the TiO 2 @NH 2 -MIL-125 S-scheme heterojunction on the surface of diatomite. Comprehensive characterization confirms the S-scheme charge transfer pathway, which not only promotes preferential accumulation of photogenerated charges at catalytically active sites but also enables rapid, low-resistance charge separation and migration. Meanwhile, the introduction of diatomite improves the dispersion of the active components and accelerates the separation of photogenerated carriers driven by the built-in electric field. Consequently, the TiO 2 @NH 2 -MIL-125/diatomite composite exhibits selective photocatalytic CO 2 to CO conversion without requiring sacrificial reagents. The composite achieves a CO evolution rate of 13.53 μmol g −1 h −1 , which is 2.20 times and 1.33 times higher than pure TiO 2 and the binary TiO 2 @NH 2 -MIL-125 composite, respectively. Furthermore, the composite maintains a stable CO production rate after three reaction cycles. This study presents an approach to designing mineral-supported S-scheme heterojunction photocatalysts for solar energy conversion applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Han Yang,Xiaoyue Liu,Wenbin Huang,Dongdong Chen,Chenghu Liu,Tianyu Bai,Xuan Zhou,Yasong Zhou,Yuqi Yang,Quan Xu,Qiang Wei
The critical challenge in overcoming the efficiency bottleneck of CO 2 methanation is the simultaneous optimization of low-temperature activity and coking resistance in Ni-based catalysts. This study employed Fe to modify Ni/TiO 2 , and the synthesized NiFe/TiO 2 catalyst was thoroughly characterized to elucidate its structural properties, followed by comprehensive assessment of its catalytic performance. Systematic characterization revealed that Fe incorporation enhances metal dispersion and modulates the electronic environment of Ni, promoting the formation of NiFe alloys. Additionally, the oxygen vacancies generated by Fe species improve the local environment of NiO, promote the effective reduction of Ni 2+ , and weaken the interaction between NiFe and the support, enabling NiFe catalysts to achieve reduction at lower temperatures. By optimizing the Ni/Fe ratio, the distribution of basic sites on the catalyst surface was precisely tuned, which was crucial for CO 2 activation, adsorption of oxygenated intermediates and carbonaceous intermediate. The Ni 3 Fe 1 /TiO 2 catalyst (Ni/Fe = 3) characterized by small metal particles, high NiFe alloy, and abundant medium-strength basic sites, exhibits exceptional performance at 280 °C. It achieved 86.6% CO 2 conversion with 98.1% CH 4 selectivity, representing 19.4% and 3.8% improvements respectively over the Ni/TiO 2 catalyst. DFT calculations further confirmed that NiFe alloy strengthens the adsorption of oxygenated intermediates (O*, OH*, H 2 O*), promoting CO 2 activation, while weakening carbonaceous species (C*) adsorption.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Zhiyuan Liu,Guoqiang Huang
Conventional adsorbents used for removal of trace phosphine from recycled off-gas in polysilicon production often suffer from limited breakthrough capacity and rapid deactivation under oxygen-free conditions. In this work, a nitrogen-doped TiO 2 -supported Cu-based adsorbent (Cu x N y @TiO 2 ) was synthesized using a simple one-pot solid-state route to enhance PH 3 removal performance. Nitrogen incorporation effectively regulates the surface chemical and electronic properties of TiO 2 , resulting in improved dispersion and stabilization of CuO species, enhanced surface basicity, and increased abundance of reactive surface oxygen species. Under an inert N 2 atmosphere at 30 °C, the optimized Cu 20 N 10 @TiO 2 exhibited a high PH 3 breakthrough capacity of 204.7 mg·g −1 and a breakthrough time of 2280 min at a weight hourly space velocity of 24,000 h −1 , significantly outperforming the undoped counterpart. Density functional theory calculations revealed that PH 3 could be readily activated on CuO surfaces through a low-energy stepwise dehydrogenation pathway, facilitating subsequent oxidation by lattice and chemisorbed oxygen species. Regeneration experiments demonstrated that the adsorbent retained 86.6% of its initial capacity after three cycles. This study proposes a cost-effective strategy for designing robust Cu-based adsorbents and offers mechanistic insights into adsorption-oxidation processes relevant to industrial gas purification.
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Wei Wu,Yangsheng Zhou,Zijian Tang,Xianwu Cao,Xiaolei Li,Chenhui Zhang
In this work, a hybrid filler g-C 3 N 4 @TiO 2 consisting of g-C 3 N 4 and TiO 2 was prepared by an in situ surface growth strategy. The hybrid was then incorporated into ultra-high molecular weight polyethylene (UHMWPE) by melt compounding to improve wear resistance. The morphology observation revealed that 3 wt% g-C 3 N 4 @TiO 2 could uniformly disperse in the UHMWPE matrix without visible aggregates. The UHMWPE composites containing g-C 3 N 4 @TiO 2 exhibited enhanced thermal stability, crystallinity as well as storage modulus. The tribological tests demonstrated that the UHMWPE composite containing 3 wt% g-C 3 N 4 @TiO 2 achieved the lowest coefficient of friction (0.162) and a significantly reduced wear rate (3.27 × 10 −6 mm 3 /N·m). These values represented reductions of 28.0% and 47.9%, respectively, compared to pure UHMWPE. The surface analysis confirmed that the presence of g-C 3 N 4 and TiO 2 had good synergistic effects on the formation of a continuous, compact tribofilm, which effectively reduced direct contact and abrasive wear. The improved tribological behavior is ascribed to the layered g-C 3 N 4 contributed lubrication through interlayer shearing, while TiO 2 nanoparticles enhanced the mechanical strength and wear resistance of the tribofilm, ensuring its durability under sliding conditions. This work offers a feasible way to develop hybrid additives for UHMWPE composites with low coefficient of friction and good wear resistance. Highlights A hybrid consisting of TiO 2 and g-C 3 N 4 was prepared successfully. The composite exhibited enhanced tribological performance. The addition of hybrid could effectively lower the coefficient of friction. The hybrid filler had good synergistic effects on reducing wear rate.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Ansheng Cheng,Xumin Zhang,Huie Hu,Hao Wang,Mao Zhang,Zichun Yang
An in-situ CeO x /TiO 2 heterostructured MAO coating was constructed. • Ce incorporation promoted pore sealing and coating densification. • The optimized coating achieved corrosion current density of 4.29 × 10 -9 A/cm 2 . • Antibacterial rate exceeded 90% via Ce release and ROS generation. • Ce 3+ /Ce 4+ redox induced charge redistribution and bandgap narrowing. Under marine service environments, titanium is facing dual threats of corrosion and microbial contamination. In this study, a CeO x nanocluster-modified TiO 2 is constructed on pure titanium via Micro-arc Oxidation technology with in-situ cerium salt introduction to control plasma discharge characteristics. It is found that the coating porosity with optimal Ce concentration is just 2.29%, and the thickness increases to 22.25 μm. The electrochemical testing reveals that the coating’s corrosion current density drops to 4.29 × 10 -9 A/cm 2 , and the charge transfer resistance reaches 3.78 × 10 6 Ω∙cm 2 , which still maintains a stable capacitive response after 14 days. This result is attributed to the combined effects of structural densification and electronic regulation at heterogeneous interfaces. Meanwhile, the antibacterial rates of the coating against Pseudomonas aeruginosa and Staphylococcus aureus reach 91.25% and 82.56%. According to experimental characterization and calculation of Density Functional Theory, it is confirmed that the Ce 3+ /Ce 4+ redox pair not only drives redistribution of interface electrons, but also effectively reduces activation energy barrier of oxygen radicals, realizing efficient antibacterial activity through synergistic effect of the Ce x+ ion release and accelerated generation of Reactive Oxygen Species. Hence, this study provides a theoretical basis for designing rare-earth-modified multifunctional marine protective coatings. Download: Download high-res image (73KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Xin Ding,Jiefei Ding,Wenchao Cao,Xinxiu Wang,Guanshi Zheng,Xianglong Meng,Yong Zhang,Ruirun Chen
The oxidation resistance is the key to coordinating the high reactivity and environmental sensitivity of Mg-based hydrogen storage materials. Herein, an MgSc-TiO 2 composite is constructed through a strategy combining alloying and compositing. The results indicate that α-Mg phase remains stable without detectable oxidation after 6 months of air exposure, with only a small amount of MgSc 2 O 4 being formed, and excellent hydrogen storage performance is obtained. The reversible capacity reaches 5.86 wt.% at 320°C, with the dehydrogenation activation energy significantly reduces to 117.9 kJ/mol from 144.0 kJ/mol. In particular, it can absorb 2.74 wt.% at 200°C under a low hydrogen pressure of 0.2 MPa. The reaction kinetics are markedly improved by the combination effect of stable interfacial catalytic phase, dynamic cyclic Ti valence state and oxygen vacancies. DFT calculations reveal the synergistic oxidation inhibition mechanism between Sc and Ti from the electronic structure level. The electron buffering effect of Sc and the competitive absorption of Ti and Sc sites efficiently prevent the oxidation of Mg. This theory provides an innovative basis for the design of high-stability Mg-based hydrogen storage materials.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Jing-lan Huang,Bi-ying Huang,Xiao-dan Mei,Qi-yue Wang,Hai-zhen Liu,Cun-ke Huang,Xiao-ying Xie,Jin Guo
Addressing the bottlenecks of cold-welding, oxidation, and low refining efficiency of ductile magnesium powder in conventional ball milling, this study develops a novel heptane-assisted dielectric barrier discharge (DBD) wall-attached plasma ball milling (NPBM) process. High-purity 50–200 nm spherical Mg–TiO 2 composites were synthesized within only 1 h. Our findings reveal that the “Melting-Sputtering-Quenching (MSQ)” mechanism induced by NPBM is the primary driver for the rapid 100 nm-level spheroidization of Mg, while heptane serves as both a quenching medium and a chemical barrier to suppress thermal welding and side reactions. Kinetic investigations demonstrate that the composite achieves a hydrogen absorption capacity of 4.50 wt% at 175 °C, with a JMAK dehydrogenation activation energy as low as 92.6 kJ mol −1 . This work provides a promising strategy for the rapid synthesis of metastable light-metal hydrogen storage materials.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2026
·
IF 5.9
Yanhong Zhang,Liulu Liu,Nanke Ma,Lixia Xie,Yuan Jin,Guangli Li
PNHC@Pt/TiO₂ core–shell heterojunction for trace Cu²⁺ monitoring. • N/P doping & O defects boost Cu²⁺ coordination and enrichment. • Low LOD 0.006 µM, wide linear range 0.001–20 µM. • Excellent selectivity against multiple coexisting heavy metal ions. • Reliable recoveries (87.1–103.3%) in tap water, soil, serum. Copper ion (Cu 2+ ) is a prevalent heavy metal contaminant in industrial wastewater and natural water bodies. Although it plays a vital role as a trace element in human physiology, overconsumption can result in severe systemic disorders. In this work, a novel electrochemical sensing platform based on P, N co-doped hollow carbon (PNHC) decorated with Pt/TiO 2 nanoparticles (PNHC@Pt/TiO 2 ) was developed for the ultrasensitive detection of Cu 2+ . The composite was systematically characterized by SEM, TEM, XRD, FTIR, Raman spectroscopy, and XPS, confirming the formation of a core-shell structure with a uniform spherical morphology (104.20 ± 0.21 nm), along with N/P heteroatoms that provide specific coordination affinity toward Cu 2+ . Compared to bare and single-component electrodes, the PNHC@Pt/TiO 2 -modified GCE delivered an enlarged electroactive surface area (0.1289 cm 2 ) and lower charge-transfer resistance; under the optimized parameters (pH 5.0, accumulation potential −0.8 V, accumulation time 180 s, and modifier volume 5 µL), this sensor presented a Cu 2+ linear detection range of 0.001–20 µM, a low limit of detection (LOD) of 0.006 µM (S/N = 3), and a high sensitivity of 6.102 µA µM −1 . The sensor also exhibited excellent selectivity against common interfering ions (K + , Na⁺, Ni 2+ , Co 2+ , Zn 2+ , Cd 2+ ), good reproducibility, and long-term stability (83.7% current retention after 8 days). Practical applicability was validated by successful determination of Cu 2+ in tap water, soil, and serum samples with recoveries ranging from 87.1% to 103.3%, demonstrating the reliable performance of the proposed sensor for environmental and biological monitoring.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Junliang Wang,Linqi Shou,Feiyu Chen,Lifeng Yang,Mengyi Qiu,Senwang Chen,Zhiyan Pan,Zhong-Ting Hu,Mian Hu
Catalytic subcritical water oxidation (CSWO) is a promising technology for treating refractory organic pollutants, yet its application to nitrogen-containing wastewater is limited by inefficient nitrogen conversion and the accumulation of nitrogenous intermediates. Herein, predominantly Ru/TiO 2 single-atom catalysts with tunable oxygen vacancy concentrations were developed for nitrobenzene degradation. The optimized 800-Ru/TiO 2 catalyst achieved mineralization and total nitrogen (TN) removal rates of 87.8% and 85.2%, respectively. A pronounced decoupling between organic matter mineralization and nitrogen conversion was observed, with nitrogen transformation identified as the rate-limiting step. Reaction condition analysis reveals that nitrogen transformation is governed by a competition between selective N 2 formation and over-oxidation to NO 3 − , and the coupling of NH 4 + and NO 2 − is identified as the key pathway for N 2 generation, whereas excessive oxidation promotes nitrate accumulation. The introduction of atomically dispersed Ru significantly enhances nitrogen conversion and shifts the reaction pathway toward selective N 2 formation. Structural characterization and electronic analyses demonstrate that oxygen-vacancy-enriched TiO 2 stabilizes Ru single atoms and induces strong metal-support interaction (SMSI), which is associated with enhances oxidant activation and promotes nitrogen redox coupling. The catalyst exhibits good stability over 92% performance retention after five cycles. This work provides insights into the relationship between catalyst structure, electronic properties, and nitrogen transformation, and offers a strategy for achieving efficient and selective nitrogen removal in CSWO systems.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）