JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Kaiquan He,Hong Tan,Shizhen Li,Pu Hu,Chaoqun Shang
The Li-S batteries possessing high theoretical energy density are promising for next-generation energy storage. However, the shuttle effect and slow conversion of lithium polysulfides seriously hinder the practical application. In this contribution, introducing metallic Cu to modify dual-phase TiO 2 (rutile/anatase) grown on N-doped carbon nanosheets (denoted as Cu/mTiO 2 -NC) can act as a buffer layer to confine the active S species in the cathode region effectively. The corresponding systematic experiments show that the Cu/mTiO 2 -NC provides sufficient surface affinity to adsorb and capture polysulfides and has a highly conductive C/N skeleton to achieve rapid electron migration. Moreover, the metallic Cu can react with polysulfides to further immobilize polysulfides. Thus, the Li-S batteries, with the aid of optimal Cu/mTiO 2 -NC, exhibit a desirable discharge capacity of 811 mA h g –1 after 100 cycles at 0.2 C, which is 50 % higher than that without Cu/mTiO 2 -NC. Moreover, the optimum Li-S batteries deliver a discharge capacity of 435.45 mA h g –1 after 600 cycles at 0.5 C, corresponding to attenuation per cycle of only 0.09 %.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zheng Kong,Lun Lu,Chao Zhu,Junjie Xu,Qile Fang,Renlan Liu,Yi Shen
PFOA has caused enormous environmental risks with recalcitrance, toxicity, and bioaccumulation, while the degradation of PFOA is still a challenging topic related to the high energy of C F bonds. However, the conventional methods such as biological oxidation, electrochemical oxidation and membrane separation have their own drawbacks. Actually, adsorption-photocatalysis is considered a potential treatment due to effectiveness and thoroughness. Instead of preparing the composite material by adding TiO 2 , the method to in-situ grow TiO 2 in the MOF (MIL-125(Ti)) was carried out, which achieved narrowed band gap and improved the photoresponse ability, simultaneously. Furthermore, the surface F-functionalized MOF provided more available special adsorption sites for PFOA enrichment. Linked fluorine groups not only improved the adsorption capacity (185.151 μmol/g) but also enhanced the photocatalytic rate (1.221 E −4 /s) by altering the electronic density of VB and CB. The constructed F-TiO 2 @MIL-125 stepwise degraded PFOA through a dominant ·OH attack pathway and maintained the oxidize ability of h + to PFOA. As a bifunctional material for adsorption and photocatalysis , F-TiO 2 @MIL-125 was able to be applied in various water environments repeatedly, which has unlimited environmental application potential.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Yunpeng Liu,Yuhang Li,Feng Peng,Yuan Lin,Siyuan Yang,Shengsen Zhang,Hongjuan Wang,Yonghai Cao,Hao Yu
Recently, MoS 2 as an efficient co-catalyst has attracted much attention for photocatalytic water splitting. MoS 2 has two polymorphs: semiconducting phase (2H) and metallic phase (1T). The 2H- and 1T- MoS 2 show different reaction mechanism in photocatalytic H 2 evolution. However, so far, very few experiments have clearly evidenced the electron transfer process between TiO 2 and mixed phase MoS 2 . This study for the first time has reported a simple hydrothermal synthesis method to prepare mixed phase few-layer MoS 2 nanosheets coated on TiO 2 nanorod arrays (MoS 2 @TiO 2 ) with a conductive fluorine-doped tin oxide (FTO) as a substrate. The structure of mixed phase MoS 2 was characterized carefully. The designed MoS 2 @TiO 2 exhibits two times higher activity than Pt@TiO 2 for photocatalytic H 2 evolution. The reliable conclusion that the photo-generated electrons from TiO 2 to MoS 2 nanosheets has clearly been evidenced by photoelectrochemical analyses and in-situ KPFM experiments, and the mixed phase MoS 2 here is a co-catalyst such like Pt rather than as a semiconductor. This study not only presents a series of solid experimental evidences to verify the electrons transfer process and photocatalytic mechanism, but also provides a new method in substituting MoS 2 for noble metal Pt as co-catalyst in high-efficiency photocatalytic water splitting into hydrogen.
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高影响因子
IONICS
·
2024
·Vol. 30
·期 4
·2345-2355
·
IF 2.4
Zhang Yi,Liu Yanmeng,Xu Wanzhen,Huang Weihong,Chen Ting,Ding Hua,Wang Baozhi,Yang Wenming
In recent years, the detection and monitoring of cadmium (Cd(II)) have gained considerable attention due to its widespread applications in various industries, such as electronics, batteries, and coatings, and its classification as a highly hazardous pollutant. This study presents the development of a novel electrochemical sensor based on ion-imprinted polymers (IIPs) and reduced graphene oxide-titanium oxide (rGO@TiO 2 ) for the selective and sensitive detection of Cd(II). Under optimized experimental conditions, the electrochemical sensor displayed a satisfactory linear relationship in the concentration range of 10 −8 to 10 −5 mol L −1 , with a lowest detection limit of 1.2 × 10 −8 mol L −1 . The sensor exhibited excellent repeatability, stability, high sensitivity, and strong selectivity. Finally, the electrochemical sensor was successfully applied to determine trace Cd(II) in practical samples. This novel electrochemical sensor based on IIPs and rGO@TiO 2 holds great potential for practical applications in environmental monitoring and pollution control, providing a promising tool for the accurate and efficient detection of hazardous pollutants like Cd(II).
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Tong Li,Yirong Xiao,Dongxue Guo,Liguo Shen,Renjie Li,Yang Jiao,Yanchao Xu,Hongjun Lin
A major issue hindering development of thin film nanocomposite (TFN) nanofiltration (NF) membrane is the interfacial defects induced by nanomaterial aggregation in top layer. Although various nanomaterials surface modification strategies have been developed to eliminate the interfacial defects, they usually involve extra modification steps and complex post-treatments. Inspired by the substrate-independent coating ability of tannic acid (TA) and the fact that the phenolic hydroxyl groups in TA can react with acyl chloride group in trimesoyl chloride, a TA coating solution containing TiO 2 nanoparticles was used as an aqueous phase of interfacial polymerization to prepare interfacial modified TFN NF membranes in this study. Surface modification of TiO 2 nanoparticles and interfacial polymerization can be carried out in a single step without any extra pre-modification step. It was found that the TA coating on TiO 2 nanoparticles surface could decrease TiO 2 aggregations and enhance interfacial compatibility between TiO 2 and polyester matrix. The TFN NF membrane prepared at a TiO 2 loading of 0.020 wt% exhibited a pure water flux of 28.8 L m -2 h −1 (284% higher than that of the controlled TFC membrane), and possessed enhanced NaCl and Na 2 SO 4 rejections of 57.9% and 94.6%, respectively, breaking through the trade-off between permeability and selectivity.
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DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Ye Wang,Zhengxuan Hu,Guolong Wu,Xiaonan Zhang,Yanyi Yin,Lin Li,Jianhua Yao
In this study, laser-assisted micro-arc oxidation (LMAO) processing was carried out on Ti6Al4V alloy under laser powers of 30, 45, and 60 W, and the influence of the laser power on the microstructure and wear resistance of the coating was further investigated. The breakdown voltage and termination voltages of LMAO processing decrease gradually as the laser power increases. At the same time, micro-discharges increase in quantity. Within the suitable laser power range (30–45 W), the obtained coating continuously enhances uniformity, thickness, and density with rising power, contributing to higher hardness and adhesion strength . However, raising laser power to 60 W will damage the obtained coating due to the violent micro-discharges, which generate interconnected larger pores in the local area. Laser power also affects the coating's reaction process and phase transition. More electrolyte ions dope into the coating as a consequence of increasing laser power. The Si concentration of the LMAO-45 coating is the highest, whereas that of the LMAO-60 coating comparatively reduces due to localized coating detachment. Moreover, enhancing laser power is more conducive to forming SiO 2 and rutile-TiO 2 phases. Compared with the traditional MAO or other LMAO coatings, the LMAO-45 coating significantly improves wear protection, evidenced by the lowest COF value , the minimum wear rate, and the least peeling during the wear test . Low porosity, surface roughness , high thickness, and increased incorporation of the SiO 2 phase are responsible for the same. However, under 60 W of laser irradiation , the wear resistance of the resultant LMAO coating decreased due to the formation of local damaged areas.
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高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Bo Ma,Wei Guo,Jixiang Zhang,Cui Liu,Nian Li,Shudong Zhang,Zhenyang Wang
Radiation-cooled films accompanying the required high solar reflectance and emissivity as well as environmental durability are challenging to develop for passive daytime radiant cooling (PDRC) applications. Herein, an inorganic dielectric scatterer, producing strong scattering in the visible to near-infrared wavelength band, had been constructed by tunable TiO2 nanorod arrays with high refractive index on the surface of 2D Mica nanosheets with good mechanical strength and chemical stability. Subsequently, radiation-cooled aramid composite films featuring a well-organized 2D layered stack structure of inorganic scatterer was developed for PDRC applications. By the feature inorganic scatterers effectively stimulating multi-level scattering of light through TiO2 nanorod arrays and multi-layered Mica structures, the radiation-cooled aramid composite films have ultra-high reflectivity of 97.5% and emissivity of 96.3% in sunlight, and achieve subambient cooling of 8.62°C for daytime and 4.84°C for nighttime. Meanwhile, the well-organized lamellar PDRC films possess high strength (98 MPa) as well as excellent environmental durability, including scratch-resistant, UV radiation-resistant and flame retardance, suggesting its great potential in PDRC for thermal regulation.
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高影响因子
SOLAR ENERGY
·
2019
·
IF 4.674
Wanxian Cai,Zhaobin Zhang,Yuanzeng Jin,Yanqi Lv,Ling Wang,Koucheng Chen,Xingfu Zhou
In this work, the up-conversion phosphor NaYF 4 :Yb 3+ , Er 3+ nanocrystalline mixed with P 25 and TiO 2 hollow microspheres with high light scattering ability were fabricated as electrode for dye-sensitized solar cells (DSSCs). Meanwhile, we take advantage of the low cost feature of the carbon counter electrode to replace the precious metal Platinum (Pt) of DSSCs. SEM results show that the well-dispersed TiO 2 hollow microspheres size is 1.5 μm with surface consisting of a large number of rice-like nanorods. The particle size of the as-prepared NaYF 4 :Yb 3+ , Er 3+ nanoparticles is about 80 nm. The Photocurrent-Voltage curve of P 25 /NaYF 4 :Yb 3+ , Er 3+ cell under 980 nm infrared light has an obvious infrared photoresponse. The fabricated DSSCs using NaYF 4 :Yb 3+ , Er 3+ achieves power conversion efficiency (PCE) of 5.27% under one sun illumination, which shows an increase of 16% when compared with the benchmark P 25 cell (4.55%). In addition, the optimized DSSC using TiO 2 hollow microspheres as the top scattering layers with NaYF 4 :Yb 3+ , Er 3+ /P 25 exhibits a prominent PCE of 6.23%, which shows a 37% increase in conversion efficiency when compared with the commercial P 25 cell (4.55%). The increase in conversion efficiency should be contributed to the dual effects of the enhanced light harvesting of up-conversion NaYF 4 :Yb 3+ , Er 3+ and light utilization of the top light scattering TiO 2 hollow microsphere.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 5.2
Xiangqian Ren,Lianyan Zhu,Bin Guo,Wenting Liu,Shuang Yu,Xingfu Zhou
Ti/TiO 2 NTs/SnO 2 –Sb–Mo anode was prepared by adding intermediate layers and elemental doping and GF/Cu–C 3 N 4 cathode was prepared by impregnation method. The electrode was characterized by SEM, XRD, LSV, CV, and EIS, which show that a more uniform and finer-grained surface structure with higher electrocatalytic activity can be prepared by doping and the addition of TiO 2 -NTs interlayer. In addition, the cathode demonstrate the successful loading of Cu–C 3 N 4 on graphite felts (GFs) by SEM and EDS. The electrochemical test shows the high electrochemical activity. The high activity of the two-electrode system was verified according to the hydroxyl radical test, and then the two electrodes were applied to the degradation of 50 mg/L methylene blue wastewater at the same time, and the results showed that the degradation rate was 98.09% in 20 min, and the COD removal was as high as 80.11%, which is 1.33 times and 2.83 times of the single-anode and single-cathode systems, respectively. In addition, the system could show excellent degradation performance in a wide pH range. At the same time, the energy consumption of the two-electrode system is only 110.9 KWh/Kg. Finally, after ten consecutive decolorization experiments, the decolorization rate of methylene blue and the removal rate of COD could still reach 90.5% and 68.7% in 20 min, which indicated that the dual-electrode system had excellent reusability. The study opens a door to the practical application of electrochemical treatment of wastewater.
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高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Kané Rabé,Lifen Liu,Noor Ahmed Nahyoon
Visible-light-driven photocatalytic Fuel Cell (PFC) is of great interest in the environmental pollutant remediation with energy recovering. Herein, enhancement in photocatalytic degradation of Tetracycline Hydrochloride (TC) with electricity generation was achieved in a single reactor of PFC with paired stainless-steel mesh electrode loaded with anodic g-C 3 N 4 /Fe 0 (1%)/TiO 2 and cathodic WO 3 catalyst (at various pH, 0.05 M Na 2 SO 4 , 10 Ω external resistance) with visible light and without light. With light, TC molecules were successfully removed (97.3% in 90 min, at initial and optimal pH 5), while generating 0.98 V cell voltage and 24 W m −2 power density, simultaneous removal of COD (chemical oxygen demand) and TOC (total organic carbon) was 91.3% and 95%, respectively, suggesting superior mineralization that can be explained by the excitation of the anodic triple component g-C 3 N 4 /Fe 0 (1%)/TiO 2. In contrast, without light, the removal of COD, TOC and the cell voltage were much lower (48.8%, 65.3%, 0.78 V). In dark, the fuel cell is self-driven and self-biased, forming potential gradient and degrading pollutants. The effects of solution pH, initial TC concentration on degradation and power generation were evaluated. This PFC degrading TC can maintain high photocatalytic activity and high power output capacity after 5 cycles with light. Without light, the electricity generation capacity was 50–70% that in visible light PFC. These features reveal that fuel cell with g-C 3 N 4 /Fe 0 (1%)/TiO 2 photo anode and WO 3 photocathode has great application potential for removing refractory pollutants from wastewater.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Le Zhang,Yuxin Zuo,Sijia Sun,Jianmeng Zhang,Xuan Wang,Minghao Fang,Hao Ding
To improve the long-term UV stability of outdoor architectural coatings, a SiO₂ shell was coated onto the primary product of TiO 2 (P-TiO₂). The primary product of TiO 2 coated with SiO 2 shell (P-TiO 2 @SiO 2 ) composite particles were prepared via a sol–gel method, forming a uniform and dense SiO 2 coating layer on the P-TiO 2 surface to enhance its UV-shielding performance. The P-TiO₂@SiO₂ composite particles were used to construct a superhydrophobic coating by a simple two-step spraying process. KH560-modified E-51 epoxy resin was used as the adhesive layer, followed by spraying of the P-TiO₂@SiO₂/HDTMS hydrophobic layer. After 30 days of UV irradiation, the coatings containing P-TiO 2 @SiO 2 as the filler exhibited a color difference (ΔE*) of only 0.38 and a yellowing index (Δb*) of 0.23, significantly lower than those with pure P-TiO 2 (ΔE*=1.64, Δb*=0.76). It indicated that the SiO 2 shell effectively reduced color change and yellowing. Furthermore, the amorphous nanoscale SiO 2 uniformly coated on the P-TiO 2 surface contributed to the formation of a rough surface morphology. After modification, the superhydrophobic coatings achieved a water contact angle (WCA) of 161.5° and a sliding angle (WSA) of 1.23°. The coatings demonstrated excellent superhydrophobicity and self-cleaning performance on multiple substrates, including concrete, wood, and bricks. Moreover, they maintained stable superhydrophobicity after 60 days of continuous UV irradiation. Abrasion tests indicated that the incorporation of the KH560-modified epoxy resin primer significantly improved the wear resistance of the coatings. After 21 abrasion cycles, the coatings retained superhydrophobicity, whereas coatings without a primer lost superhydrophobicity after only 9 cycles. The superhydrophobic coatings prepared in this study were superhydrophobic, self-cleaning, UV-aging-resistant, fluorine-free, and wear-resistant without introducing traditional organic UV absorbers and hindered amine light stabilizers. The preparation process was simple, and the coatings exhibited stable and reliable performance, demonstrating promising applications in long-term outdoor protective and self-cleaning coatings. Download: Download high-res image (261KB) Download: Download full-size image
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 31
·42970-42981
·
IF 7.8
Ma Chaofan,Su Huiyu,Liu Zhongneng,Zhu Chaoqi,Yang Yazhou,Zeng Dawen
It is crucial to detect hydrogen (H 2 ) release from battery packs to provide early warning of battery thermal runaway. In this article, the hollow octahedral CuO x /TiO 2 were prepared using an efficient MOF template strategy, and nitrogen (N) -doped carbon (C) nanofibers embedded with CuO x /TiO 2 were designed by electrospinning, which were CuO x /TiO 2 @NCFs. The hollow heterojunctions (CuO x /TiO 2 ) formed based on MOF templates can reduce the recombination rate of carriers in TiO 2 , and DFT calculations reveal charge transfer occurring at the heterojunction, with a substantial migration of electrons from TiO 2 to CuO, significantly enhancing the ability of TiO 2 surface to adsorb H 2 . Simultaneously, the nanofibers composed of CuO x /TiO 2 and PAN contain substantial amounts of nitrogen and carbon. The introduced N atoms can activate the adjacent C atoms, the 3D framework constructed from N-doped C nanofibers exhibits extremely strong electron transport capability. At the optimal TiO 2 :PAN ratio of 4.0:1, the sensor achieves the response of 48% toward 10 ppm H 2 , and can detect as low as 20 ppb H 2 at room temperature, which is a potential competitive candidate for monitoring LIBs thermal runaway.
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PubMed
高影响因子
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