SURFACE & COATINGS TECHNOLOGY
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2025
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IF 6.1
Jiaxing Li,Jiongming Chen,Ying Chen,Jialei Ren,Jianan Li,Liankui Wu,Hongwei Liu,Fahe Cao,Qingqing Sun
This study develops a new shot peening method, i.e., copper powder ultrasonic shot peening, and investigates its antibiofouling effect on commercially pure titanium grade 2 (TA2) alloy in seawater. The results indicate that adding Cu powder during ultrasonic shot peening can form a Cu-containing layer with a thickness 1–2 μm on the surface of TA2 alloy, primarily in the form of nanocrystals. This Cu-containing layer exhibits a 90 % antifouling efficiency against Pseudomonas aeruginosa and an 85 % efficiency against Aspergillus terreus , mainly due to the release of Cu ions during immersion. Electrochemical corrosion test results show that corrosion rate of this anti-fouling layer is two orders of magnitude higher than the substrate alloy, which significantly enhances the release of Cu ions and thereby improving the antifouling capability. Tensile test results show that Cu powder peening similarly improves the mechanical properties of TA2 alloy as conventional peening.
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高影响因子
CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Ziqi Zhong,Borui Du,Guowu Zhan,Jingran Xiao
Herein, the 3D printing technology is harnessed as a new and flexible strategy to fabricate a structural-parameter adjustable 3D-structured Ti-Fe 2 O 3 photoanode. The Ti alloy was discovered to be practicable during the synthesis of Ti-Fe 2 O 3 and enlisted as a substrate material for crafting a conical-array patterned Ti-Fe 2 O 3 photoanode. The conical array fashions an angle between the incident light (longitudinal side) and the photogenerated charge transport (transverse side), along with a considerably augmented light-receiving area. Significantly, the charge separation efficiency progressively escalates as the cone height augments. This undertaking accentuates the importance of modulating the parameter of a 3D-structured Fe 2 O 3 photoanode.
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高影响因子
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Xiaohui Sun,Dong Wang,Wei Wu,Xueying Zhao,Xuyang Zhang,Bo Wang,Xianhui Rong,Guohua Wu,Xiangwei Wang
The dual-band electrochromic smart windows (DESW) can selectively modulate visible (VIS) and near-infrared (NIR) transmittance, which is expected to effectively reduce building energy consumption. However, the complex preparation of dual-band electrochromic materials has restricted the further development of DESW. In this work, amorphous and crystalline Ti-doped WO3·2H2O (TiWH) were synthesized by a simple precipitation method, which does not require strict control of the oxygen content and temperature. Ti doping reduced the crystallinity of WO3·2H2O and increased the specific surface area. 3% TiWH films exhibited excellent dual-band electrochromism with high transmittance modulation (633 nm: 83.8%, 1050 nm: 72.5%), fast response time (bleached/colored time: 14.9/15.3 s at 633 nm, 16.0/3.5 s at 1050 nm), good coloration efficiency (633 nm: 22.8 cm2 C–1, 1050 nm: 90.8 cm2 C–1), and high capacitance of 47.1 mF cm–2 at 0.1 mA cm–2. The electrochromic device can still maintain good dual-band electrochromism (bright, cool, and dark modes). The excellent dual-band electrochromism and energy storage make TiWH have a good application prospect in green buildings.
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ACS Applied Nano Materials
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2025
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IF 5.5
Junli Xu,Zhengxi Li,Ran Wang,Xueqi Zhang,Xueping Zhang,Yingcong Wei,Xiaochuan Hou,Yunjian Liu
Effective combination of the photosensitive and photoactive units in metal–organic frameworks (MOFs) is vital to achieving efficient solar energy utilization for superior photocatalytic efficiency. In this study, we successfully organize photosensitive metalloporphyrin ligands and photoactive building units (Ti-oxo clusters) uniformly at a molecular level within a heterobimetallic metal–organic framework (MOF) nanostructure, denoted as TMF(X), where X represents Zn, Co, or Cu. The well-accessible Ti sites possess a close proximity to the metalized porphyrin, which is favorable for the electron-transfer kinetics to the photocatalytic center for the redox reaction. Furthermore, the metal ions at the porphyrin center are able to induce electron redistribution, more negative conduction band potential, and enhanced light absorption, which boosts the photocatalytic H2 evolution performance. Notably, the resulting heterobimetallic MOF nanostructures exhibited remarkably enhanced photocatalytic H2 evolution performance, especially for the nano TMF(Zn) with a maximum H2 evolution rate of 3.24 mmol g–1 h–1 under visible light irradiation, which is much higher than that of TMF (1.40 mmol g–1 h–1). Our work opens up a way for highly efficient MOF-based photocatalysts for H2 evolution and beyond.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Cheng Liu,Qi Chen,Yueling Chen,Jimmy C. Yu,Jionghua Wu,Ling Wu
Photocatalysis, which uses sunlight, N 2 and H 2 O to produce NH 3 , is a more sustainable approach to N 2 fixation than the Haber-Bosch process. However, its efficiency is severely limited by the difficulty of activating N N bonds. This work presents metal (M = Cu, Fe, V)-substituted MIL-125(Ti) (MIL-(MTi)) for photocatalytic N 2 fixation without using any sacrificial agents. Structural characterizations reveal that the active sites including oxygen vacancies (OV) and Ti 3+ species are formed by the resulting crystal distortion due to the partial substitution of Ti 4+ by other metal ions (Cu + , Fe 2+ , V 3+ ) in MIL-125(Ti). MIL-(CuTi) possesses a larger number of OV and Ti 3+ compared to MIL-(FeTi) and MIL-(VTi) due to the larger valence difference between Cu + and Ti 4+ . These active sites not only promote the adsorption and activation of N 2 and H 2 O, but also facilitate the photogenerated charge mobility. Photogenerated holes oxidize H 2 O to produce O 2 and H + . Photogenerated electrons reduce N 2 activated on Ti 3+ sites by combining with H + to form NH 4 + . Therefore, MIL-(CuTi) shows the highest NH 4 + production rate 46.5 µmol·h −1 ·g −1 , which is much higher than that (1.2 µmol·h −1 ·g −1 ) of the pristine MIL-125(Ti). This work provides a new insight into rational design for artificial N 2 fixation systems by the construction of the active site.
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PubMed
高影响因子
ACS Applied Energy Materials
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2024
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IF 5.4
Kai Huang,Xulin Mu,Yang Ding,Jinhui Li,Manling Sui,Pengfei Yan
Polycrystalline Ni-rich layered lithium transition metal oxides are one of the most promising cathode materials for next-generation high energy density lithium-ion batteries, yet they are still facing many challenges, especially for the cycling induced structural degradations. Intergranular cracking has been identified as one of the most crucial degradations, and grain boundary (GB) engineering has been demonstrated to be an effective countering strategy. Herein, we report a GB modification protocol that can realize not only improved GB stability but also interfacial reaction kinetics, realizing much improved cycling performance of NCM811. The simple and effective solution method can incorporate Ti-dopant into GBs and secondary particle surface, realizing the increase of the capacity retention from 79.5% to 93.5% at 3.0–4.5 V after 100 cycles, and its high voltage (4.7 V) and high temperature (55 °C) cycling stability are also significantly improved. Comprehensive microstructure and electrochemical characterizations of the samples before and after cycling are conducted to reveal the underlying mechanisms, validating that both interfacial degradations and bulk failures have been effectively mitigated. This work provides an effective protocol in the modification of GBs and interfaces of polycrystalline battery materials, which is promising and feasible for industrial mass-production application.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Mazhar Khan,Zeeshan Akmal,Muhammad Mubashir Khan,Muhammad Tayyab,Seemal Mansoor,Muhammad Adnan Zeb,Amir Zeeshan,Ziwei Ye,Jinlong Zhang,Shiqun Wu,Lingzhi Wang
Metal-organic framework (MOF) based heterojunctions offer a promising strategy for CO 2 photoreduction, contributing to carbon neutrality and environmental remediation. However, the precise design and control of these heterostructures remain critical challenges. Herein, we report the precise construction of a heterostructure by integrating 2D ZnIn 2 S 4 nanosheets with NH 2 -MIL-125(Ti) for efficient CO 2 photoreduction in a sacrificial agent-free environment. A comprehensive investigation demonstrates robust interfacial interactions and work function differences between NH 2 -MIL-125(Ti) and ZnIn 2 S 4 , facilitating the formation of an interfacial electric field and enabling the construction of an S-scheme heterojunction. The directional migration of photogenerated charge carriers effectively suppresses their recombination, retaining the strong oxidative and reductive potential of the heterostructure components. In-situ infrared spectroscopy provides concrete evidence that the S-scheme heterojunction significantly enhances the formation of key intermediates, which are crucial for CO generation. The optimized NMT-5@ZIS achieves a CO yield of 17.30 umol g -1 h −1 without sacrificial agents, representing 8.6 and 6.6-fold improvements over pristine NH 2 -MIL-125(Ti) and ZnIn 2 S 4 , respectively. This work bestows an innovative insight into the construction of MOF-based S-scheme heterojunctions, opening new avenues for practical applications in energy storage and photocatalysis.
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高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Qinghao Song,Zhihao Huang,Ying Xiao,Yu Zhang,Liyi Li,Yi Yu,Si Chen,Qing Wu
MXene Ti 3 C 2 has emerged as a promising biosensing material due to the high surface area, excellent biocompatibility, tunable functional groups (-F, O, -OH), and outstanding electrical conductivity, effectively addressing issues such as low sensitivity and inadequate biocompatibility in sensors. This work, MXene Ti 3 C 2 -AuNPs are synthesized as functional materials through a one-step synthesis method. We propose the first all-fiber biosensor featuring a laterally offset SMF-MMF-SMF-MMF-SMF (SMSMS) interferometric structure functionalized with MXene Ti 3 C 2 -AuNPs as the substrate of the biosensor sensor device, for the detection of the alkane degradation (ALK) gene, to the best of our knowledge. The biosensor enables in-situ target DNA (tDNA) detection across 1 fM to 1 μM concentrations based on this nanoengineered interface, demonstrating 1755.95 nm/RIU sensitivity and a 1 fM limit of detection (LOD) – Two orders of magnitude lower than conventional optical DNA sensors (μM-level). The sensor exhibits a wavelength shift of 1.23 nm in response to complementary DNA, which is 8.2 times greater than that for non-complementary DNA, with a maximum wavelength shift error of 0.11 nm across three repeated experiments and a shift within 0.1 nm over 7 days for sensors with attached functional MXene Ti 3 C 2 , demonstrating excellent specificity, stability, and reproducibility. These advantages render the fiber optic device coated with MXene Ti 3 C 2 -AuNPs an effective solution for ALK gene monitoring and broaden its applicability for ultra-trace DNA detection in environmental and biomedical contexts
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高影响因子
Molecular Catalysis
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2025
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IF 4.9
Can Sun,Runze Guo,Zhexiao Zhu,Shouxin Zhu,Jingyi Qu,Zijie Fang,Xiaolu Xu,Jiahui Lin,Yangben Chen,Shijie Zhang,Hui Zheng
Photocatalytic nitrogen fixation as a green, environmentally friendly, mild and low energy-consuming nitrogen fixation is considered as an ideal way to produce ammonia. Herein, inspired by nitrogen-fixing enzymes, the MOF materials Fe-sdc and Ti-sdc were synthesized by a simple solvothermal synthesis method using Fe and Ti as metal nodes and 4,4′-stilbenedicarboxylic acid (H 2 sdc) as a ligand. The ammonia production rates of Fe-sdc and Ti-sdc were 61.01 μmol g −1 h −1 and 46.84 μmol g −1 h −1 . The 15 N 2 isotope experiments were utilized to determine the nitrogen source for ammonia synthesis during the nitrogen fixation process of Fe-sdc. Various characterization analyses were also utilized to analyze the reasons for the better nitrogen fixation performance of the two catalysts.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Lu Wen,Chaojie Li,Houqun Xiao,Huazhou Hu,Chaobin Lai,Luocai Yi,Qingjun Chen
The ZrCo alloy stands out as one of the most promising candidates for hydrogen isotope storage materials in nuclear fusion, owing to its extremely low equilibrium hydrogen pressure (10 −3 Pa, 20 ℃). However, ZrCo experiences severe disproportionation reactions during dehydrogenation/hydrogenation processes, which lead to significant performance degradation. To address this, we have introduced V and Ti into the ZrCo alloy, resulting in the Zr 0.8 V x Ti 0.2-x Co (x = 0–0.15) series. Our research indicates that the addition of V and Ti reduces the lattice parameters, thereby increasing the platform pressure for hydrogen desorption and decreasing the enthalpy and entropy of the desorption reaction. This modification allows for a lower desorption temperature and enhances the alloy's resistance to hydrogen-induced degradation. Remarkably, the hydrogen storage capacity of the Zr 0.8 V x Ti 0.2-x Co(x = 0–0.15) alloys remains stable after 19 h of desorption. Furthermore, the Zr 0.8 V 0.05 Ti 0.15 Co alloy demonstrates exceptional cycling stability, retaining over 99 % of its hydrogen storage capacity after 50 cycles. First-principles calculations have clarified the adsorption energies of hydrogen at different binding sites, revealing the following order of stability: E b(Ti-V) < E b(Zr-Ti) < E b(V-Zr) < E b(Zr-Zr) . The hydrogen absorption and desorption kinetics of the Zr 0.8 V x Ti 0.2-x Co alloys follow the trend: Zr 0.8 V 0.15 Ti 0.05 Co > Zr 0.8 V 0.1 Ti 0.1 Co > Zr 0.8 V 0.05 Ti 0.15 Co > ZrCo, indicating optimized performance with the introduction of V and Ti. This study not only provides a viable solution to the disproportionation issue in ZrCo alloys but also offers valuable insights into the design of high-performance hydrogen isotope storage materials for nuclear fusion applications.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Cairu Shao,Shuai Li,Hongyang Cao,Lijuan Duan,Wendong Lv,Dongxing Wang,Shuai Rao,Kuifang Zhang,Yusi Jiang,Bin Cai
High concentrations of residual xanthate in mineral processing wastewater often limit the reuse of tailing water. Targeted removal of xanthate is an effective strategy for improving the tailing water recycling rate. In this study, the degradation efficiency and mechanism of sodium ethyl xanthate (SEX) in an electroactivated peroxydisulfate (EAPDS) system were investigated systematically. To avoid the influence of co-existing organic and inorganic matters in real flotation wastewater, we used simulated SEX wastewater to conduct the efficiency and mechanism investigation. A significant synergistic effect between electrocatalysis and peroxydisulfate was observed during the SEX decomposition. When the initial concentration of SEX was 200 mg/L, it achieved 100% removal rate only in 30 min with PDS dosage of 5 mM at current density of 10 mA/cm 2 . The introduction of peroxydisulfate boosted the removal efficiency six-fold compared to electrocatalysis alone. UV-Vis spectroscopy and GC-MS analyses revealed that the intermediate products of SEX were C 2 H 5 OH and CS 2 . The reactive oxygen species induced in the EAPDS were identified using a series of detection methods. • OH, 1 O 2 , h + , O 2 •− and electron transportation process (ETP) all contributed to SEX removal. The degradation mechanism in the EAPDS system was proposed based on the analysis of the reactive oxygen species and products. Application to real flotation wastewater was attempted as well. The effects of different operating conditions were also evaluated, including pH, coexisting anions, PDS dosage, and current density. This study provides a new approach for the rapid removal of residual xanthates from mineral processing wastewater.
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高影响因子
Journal of Materials Research and Technology-JMR&T
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2023
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IF 6.4
Wensheng Yang,Yue Gao,Quan Xie,Tinghong Gao,Yongchao Liang,Qian Chen,Zean Tian,Yunjun Ruan
The Ti substrate, with physicochemical stability and excellent electrical conductivity, is potential to fabricate all-solid-state batteries. However, the Titanium atoms at high-temperature synthesis makes it easy to react with active materials. Modifying the titanium surface with an inert protective layer while ensuring high electrical conductivity remains a significant challenge. Herein, a pencil was used to draw on the Ti substrate and subsequently sintering at a high temperature to obtain a graphite-coated Ti substrate (Ti-Graphite). The experimental results show that Ti-Graphite has a smoother surface and fewer defects in the graphite layer. Moreover, titanium carbide is formed at the interface of graphite and Ti substrate, which will enhance the physicochemical stability of the Ti-Graphite. To gain deep understanding of the evolution mechanism in the synthesis, molecular dynamics simulations were carried out to investigate it. The results exhibit that the voids at the C/Ti interface and stress in the model were significantly decreased after sintering and cooling treatment, proving that Ti-Graphite has a smoother surface, a more stable interface, and fewer defects at the atomic scale. Therefore, we provide a simple and facile strategy to obtain a Ti-graphite substrate with superior physicochemical stability, which reaveals excellent potential to synthesize high-performance all-solid-state batteries.
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高影响因子
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