JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Yongyang Chen,Fulin Li,Xiaochun Dong,Dan Guo,Yixuan Huang,Shanping Li
Efficient and stable rGO@Ti/SnO 2 –Sb composite electrodes were prepared by the sol-gel method. The microscopic morphology , crystal structure, and electrochemical properties of the rGO@Ti/SnO 2 -Sb composite electrodes were characterized by a range of characterization techniques. The electrocatalytic oxidation activity of the electrodes was evaluated by the degradation efficiency of the fluoroquinolone antibiotic norfloxacin (NOR). Simultaneously, the effects of different experimental conditions on the degradation efficiency of NOR were also investigated, such as calcination temperatures, brushing times, initial pH, initial electrolyte concentration , etc. The enhanced electrocatalytic oxidation activity can be attributed to the excellent electron transfer efficiency, higher electrode specific surface area, and stronger adhesion of the electrode coating to the substrate. Additionally, the possible NOR degradation pathway was deduced through the main intermediates, and the mechanism of NOR degradation was discussed based on experimental and characterization results. This work provides a simple and effective method to prepare highly active composite electrodes for electrocatalytic oxidation to remove organic pollutants from water.
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高影响因子
ELECTROCHIMICA ACTA
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2019
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IF 5.383
Dengke Zhang,Yan Liu,Lei Wu,Liwei Feng,Shuangling Jin,Rui Zhang,Minglin Jin
The effects of various Ti concentrations doping on the electrochemical properties of LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM 811) sample were systematically studied. The XRD , EDS and XPS analyses indicated that the Ti-ion was substituted the occupied sites of Li and transition metal on the crystal structure. It also led to the increase of lithium interlayer spacing and the decrease of transition metal interlayer slab. The secondary particle size distribution of the 0.005 mol Ti-doped in LiNi 0.8 Co 0.1 Mn 0.1 O 2 approximated to normal distribution . It showed multi-layer performance with high capacity (214.9 mAh g −1 at 0.1C), good rate performance (165.02 mAh g −1 at 1 C, 136.9 mAh g −1 at 5 C) and more excellent cyclic stability (77.01% after 150 t h at 1 C and 86.54% after 50 t h at 5 C). TEM studies revealed that the structural degradation on NCM 811 primary nano-particle could be effectively suppressed by the effect of Ti ions doped. The results demonstrated that doping of Ti content had superior advantages for LiNi 0.8 Co 0.1 Mn 0.1 O 2 cathodes.
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高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 47
·期 5
·5918-5928
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IF 3.83
Yu Zhao,Tianqi Zhang,Liaoyuan Chen,Tianbiao Yu,Jiayu Sun,Chuang Guan
In situ Ti(C, N), ring phase, and multi-phase enhanced Ni204-based alloy coating were prepared by adding various Ti/C/TiN ratios particles. The effects of the reinforcement phase on the microstructure, microhardness , tribological property, and microstructure characteristics at the interface between the coating and substrate were investigated. The results show that the coatings with a 5:1 mass fraction ratio of TiN/C exhibits the highest microhardness , which is 3.78 times higher than that of the original Ni204 coating. While, the coating with 21:7:2 mass fraction ratio of TiN/Ti/C exhibits the lowest friction coefficient , which is 4.44 times smaller than that of the original Ni204 coating. The addition of Ti and C particles promotes the precipitation of ring phase and carbides , reduces ceramic agglomeration, alleviates the floating of ceramic particles, and improves the bonding strength of reinforcement phases. Owing to the good mutual solubility among Fe, Ni, and, Cr elements, the diffusion happened at the interface between the coating and substrate.
研究领域:
材料科学
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表面工程
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金属学与金属工艺
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机械工程
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复合材料
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2016
·Vol. 134
·期 1
·
IF 1.866
Zhaowei Wang,Zhixia Wen,Xing Li,Junwei Yu,Xiaoxuan Liu
The preparation of the high cis −1,4-polyisoprene by Ziegler-Natta catalysis system was studied. The effect of Al-Ti catalysts modified by ethers with different structures which are different electron donor reagent on polymerization of isoprene has been mainly investigated. By the measurement method of the monomer conversion, FTIR, and 1 H NMR spectroscopy, the influence of, respectively, added diphenyl ether, anisole, dibutyl ether, or methyl tert -butyl methyl ether as a third active component on the heterogeneous TiCl 4 -Al( i -Bu) 3 -ether catalyst activity and microstructure of synthetic polyisoprene was analyzed. By the adding of diphenyl ether or dibutyl ether, the process of prefabricated heterogeneous catalyst is quickly and catalyst particle quantity is large. The polymerization conversion is high and the microstructure cis −1,4 content of the resulting polymer can reach 92%. But Al( i -Bu) 3 added anisole or methyl tert -butyl methyl ether hard to cooperate with TiCl 4 . © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133 , 44357.
研究领域:
高分子化学
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催化化学
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功能材料
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合成高分子
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配位聚合
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高影响因子
MATERIALS & DESIGN
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2026
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IF 7.9
Sun Xuetong,Wang Beibei,Sun Hao,Ren Xiue,Zhou Changren
The application of Selective Laser Melting (SLM) porous titanium scaffolds for patient-specific implants is steadily expanding; however, enhancing their bioactivity to support effective bone repair remains a significant challenge. This study presents a novel composite scaffold designed to enable spatiotemporally controlled release of dexamethasone (Dex) and bone morphogenetic protein-2 (BMP-2), thereby promoting bone regeneration and establishing a pro-healing microenvironment in bone defects. The composite scaffold integrates an outer SLM-Ti framework coated with a Dex-loaded polypyrrole (PPy) film for on-demand release, and an inner OSA-Gel (OG) hydrogel loaded with BMP-2-encapsulated mesoporous bioactive glass nanoparticles (MBGNs) for sustained delivery. The results demonstrate that the controlled dual delivery of BMP-2 and Dex exerts a significant synergistic effect in promoting cellular proliferation and osteogenic differentiation in vitro. These findings provide a theoretical basis for advancing SLM-Ti customized implants toward preclinical application in bone regeneration.
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Yu Jiaojiao,Zuo Yi,Li Gudan,Cai Jiajun,Chen Yu,Guo Yuzhou,Xu Shutao,Li Lina,Guo Lingling,Yang Hong,Guo Xinwen
Titanium silicalite-1 (TS-1) attracts wide attention as an effective oxidative catalyst. However, the preparation of TS-1 typically requires rigorous synthesis procedures with a relatively long synthesis time and generates a substantial amount of wastewater. This study discovers that, in the presence of tetrapropylammonium hydroxide (TPAOH), Si and Ti sources can form a homogenous liquid solution that is highly stable although the two typically undergo hydrolysis at very different rates individually. With such understanding, this work develops a straightforward one-pot synthesis strategy that eliminates the cumbersome procedures aimed at suppressing the hydrolysis of the Ti source in TS-1 synthesis and demonstrates that the crystallization process of TS-1 can be accelerated by reducing the molar ratio of water to Si species ( n (H 2 O/Si)) in the synthesis solution. In propene epoxidation with H 2 O 2 , an excellent catalytic activity is obtained over the TS-1 synthesized at n (H 2 O/Si) = 3.5 and crystallized for only 6 h. This low n (H 2 O/Si) synthesis regime results in a significantly high yield per batch (12 g TS-1/100 mL batch) and, at the same time, produces almost no wastewater. The superior catalytic performance of TS-3.5-6 synthesized is attributed to its high total Ti content and the presence of catalytically active Ti(OSi) 2 (OH) 4 .
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高影响因子
MATERIALS LETTERS
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2026
·
IF 2.6
Jianghua Ren,Jia Chu,Zhaoxing Lei,Rui Zhang,Shanxin Xiong
A high-entropy oxide strategy was adopted to develop high-performance, low-iridium dimensionally stable anodes (DSAs) for the acidic oxygen evolution reaction (OER). A novel IrTaWSnCeOₓ coating was fabricated via modified thermal decomposition. Despite an ultralow Ir loading of only 0.4 mg cm −2 , the electrode achieved an overpotential of 286 mV at 10 mA cm −2 and a Tafel slope of 60.5 mV dec −1 , while demonstrating stable operation for over 400 h. This performance significantly outperforms conventional IrO₂–Ta₂O₅ anodes. The high-entropy strategy offers an effective approach to developing durable, low-iridium DSAs.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xiao-Dong Kang,Guo-Hua Zhang
To address the challenge of balancing hardness, toughness, and strength in Ti(C, N)-based cermets, existing research predominantly focused on composition design and sintering optimization, while comparatively less attention was paid to the critical role of initial Ti(C, N) powder characteristics in determining properties. In this study, high-quality Ti(C, N) powders with varying C/N ratios were synthesized via carbothermal reduction-nitridation (CRN) coupled with Ca treatment, followed by the fabrication of Ti(C, N)-20WC-5Mo-5Ni-5Co (wt%) cermets using vacuum pre-sintering assisted spark plasma sintering (SPS). The prepared powders were characterized by the absence of free carbon, low oxygen content, uniform morphology, superior crystallinity, and excellent dispersibility. After sintering, all samples achieved high densification, comprising the (Ti, W, Mo)(C, N) hard phase, (Co, Ni) binder phase, and trace residual WC. The ceramic grains mainly displayed black core-gray rim, black core-rimless, and white core-gray rim structures, characterized by overall thin rims. As the C/N ratio decreased, the dissolution-precipitation process during sintering was inhibited. Accordingly, hardness exhibited an initial decline followed by an increase, whereas the fracture toughness ( K IC ) showed an opposite trend. Transverse rupture strength (TRS) peaked at an intermediate C/N ratio. Cermet derived from Ti(C 0.44 , N 0.56 ) powder achieved an optimal combination of properties, with hardness, K IC , and TRS values of 1867 ± 12 HV 30 , 9.13 ± 0.21 MPa m 1/2 , and 1748 ± 75 MPa, respectively. The synthesized high-quality Ti(C, N) powders provided a crucial foundation for microstructural control and improved overall properties of cermets, and adjusting the C/N ratio served to further optimize the balance among hardness, toughness, and strength.
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Long Ye,Juntao Si,Cheng Zhang,Sihan Zeng,Chunhua Chen
Ti-Ni co-doping improves electrochemical kinetics and powder densification. • Dopants Ti and Ni function on the Mn- and Fe-redox regions, respectively. • Powder compaction density increases by 8.5% to 2.04 g cm −3 after Ti-Ni doping. LiMn 0.6 Fe 0.4 PO 4 (LMFP) is a promising high-energy cathode, but its practical application is constrained by sluggish Mn 2+ /Mn 3+ redox kinetics and insufficient powder compaction density (PCD). Herein, Ti-doped, Ni-doped, and Ti–Ni co-doped LMFP/C were prepared by a ball-milling-assisted solid-state route. It is clarified that Ni predominantly accelerates the Fe 2+ /Fe 3+ reaction, whereas Ti promotes the kinetically slower Mn 2+ /Mn 3+ reaction and improves cycling stability. The optimal sample LMFP-2Ti-2Ni delivers 163.1 and 142.9 mAh g −1 at 0.1 and 5 C, respectively, and retains 90.8% of its capacity after 400 cycles at 1 C. Relative to pristine LMFP, the Ti-Ni co-doping increases the 0.1 C capacity from 144.7 to 163.1 mAh g −1 (+12.7%) and the PCD from 1.88 to 2.04 g cm −3 (+8.5%). Also, the relative unit-cell-volume variation decreases from approximately 5.2% to 4.6%, indicating more gradual bulk-lattice evolution. Thus, Ti–Ni co-doping as a complementary strategy can simultaneously improve rate capability, cycling durability, and particle packing in LMFP/C cathodes. Download: Download high-res image (356KB) Download: Download full-size image
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Lu Cao,Huijiadai Luo,Xiaoxiao Huang,Yong Huang,Hua Ke
BaTiO 3 ceramics were synthesized via a conventional solid-state reaction method to investigate the influence of lattice strain induced by tiny content of Fe 3+ doping (1 mol%) on the structural evolution and ferroelectric properties. The incorporation of Fe 3+ introduces a compressive strain field, resulting in a reduced c / a ratio and a disordered domain configuration. Such lattice strain significantly enhances the maximum ferroelectric polarization ( P max ) from 23.2 μC/cm 2 for undoped BaTiO 3 ceramic to 40.6 μC/cm 2 for BaTi 0.99 Fe 0.01 O 3- δ ceramic. This observed enhancement is attributed to a lowered energy barrier for polarization switching and the facilitation of domain wall motion. Phenomenological analysis based on symmetry-related strain-polarization coupling further reveals that the Fe 3+ induced compressive strain mitigates the lattice mismatch stress at domain boundaries and alleviates the strain constraint on polarization switching. These findings clarify the relationship between chemical-doping-induced lattice strain and ferroelectric performance, offering a pathway for the deliberate control of domain structure to achieve high ferroelectric performance in bulk ceramics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xiaoting Li,Muhammad Asif,Yuxin Qin,Shaomin Shuang,Ayesha Aziz
The strong electrostatic associations are responsible for self-assembly. • Successful construction of Ti₃C₂Tx/CuNi heterojunctions. • Enhanced sensing performance of Ti₃C₂Tx/CuNi is obtained in DA detection. • Ti₃C₂Tx/CuNi heterojunctions-based sensor is employed in real-time DA detection. The detection of dopamine (DA) with high efficiency and sensitivity is crucial to understand its involvement in various biological and pathological functions. This study presents the synthesis of a novel composite material by hybridizing layered Ti 3 C 2 T x and CuNi nanoparticles via electrostatic interactions and its application in electrochemical DA detection. The Ti 3 C 2 T x /CuNi nanocomposites were favorably synthesized through hydrothermal approach and well-characterized using different characterization techniques. The performance of this material in electrochemical sensing was subsequently investigated. The key to its efficiency lies in the synergistic interaction between the materials, Ti 3 C 2 T x facilitates rapid electron transfer, while CuNi provides numerous catalytic centers, collectively boosting electrocatalytic aptitude. The sensor demonstrates excellent performance under optimized conditions, featuring a linear concentration range of 2–250 μM, enhanced stability, sensitivity, and a low detection limit of 290 nM (S/N = 3). This research suggests that the developed sensor holds significant promise in the electrochemical detection of DA as a biomarker in real-time detection of DA in blood serum samples. The schematic illustration of different steps involved in synthesis of Ti 3 C 2 T x /CuNi heterojunctions and their sensing performance in DA detection. Download: Download high-res image (141KB) Download: Download full-size image
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CATALYSIS TODAY
·
2026
·
IF 5.1
Shuang Wang,Shuo Wang,Xiao-Qian Feng,Huan Wang,Xuelan Hou,Jin Ye,Yong-Hua Zhao
TiO 2 is a widely studied photocatalyst, but its practical performance is limited by poor light utilization and rapid recombination of photogenerated charge carriers. Herein, a TiO 2 -ZIF-8 heterojunction with a chemically bonded interface was constructed through the formation of Ti-O-Zn interfacial bonds. This design integrates the strong adsorption capacity of ZIF-8 with improved charge separation and transfer across the heterojunction. The optimized TiO 2 -ZIF-8 composite showed markedly enhanced photocatalytic activity, achieving 94.6% degradation of methylene blue within 120 min under simulated solar irradiation. Its apparent rate constant reached k = 0.01508 min -1 , which is 1.55 and 2.38 times higher than those of pristine TiO 2 and ZIF-8, respectively. XPS, FTIR, TEM, and PL results confirm the successful construction of the heterojunction and reveal the key role of Ti-O-Zn bonding in strengthening interfacial interaction and facilitating photogenerated carrier migration. Meanwhile, the strong interfacial interaction improved the structural stability of the composite and helped inhibit nanoparticle agglomeration during photocatalysis. Overall, this work provides new insight into the design of high-performance MOF-based photocatalytic systems through interfacial chemical bond engineering.
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