ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Chunhua Wang,Huimin Shi,Huaizhi Liu,Jiecai Fu,Donghai Wei,Wei Zeng,Qiang Wan,Guanhua Zhang,Huigao Duan
Highly efficient electrocatalytic hydrogen evolution reaction (HER) is achieved by constructing uniformly dispersed quasi-atomic-scale Pt on porous conductive titanium nitride nanorod arrays (Pt TiN NAs). The Pt TiN NAs demonstrate high HER efficiencies both in acid (0.5 M H 2 SO 4 ) and alkaline media (1 M KOH) with the overpotentials of 39.7 mV and 139 mV at the current density of 10 mA cm −2 , respectively, which is comparable to that of commercial 20 wt % Pt/C under the same experimental condition. In addition, the Tafel slopes of Pt TiN NAs (38.6 mV dec −1 in acid and 98.3 mV dec −1 in alkaline media) are much lower than that of commercial Pt/C. More remarkably, the Pt TiN NAs display a much higher current retention of 91.6% after continuous test for 60 h in 0.5 M H 2 SO 4 comparing to 46.9% of Pt/C after 30 h cycling. The excellent HER performance of as-prepared Pt TiN NAs are attributed to the abundant available reaction sites from the uniformly distributed quasi-atomic-scale Pt, the suppressed aggregation of Pt by the strong metal-substrate interaction between Pt and TiN, and the superior electron transfer caused by high electric conductivity TiN substrate. Our designed structure provides an ideal catalytic system for efficient HER, which may inspire the design and synthesis of other high efficiency electrocatalytic systems.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2021
·Vol. 152
·期 6
·1651-1659
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IF 3.186
Tao Lei,Zhang Xueliang,Song Lizhu,Hu Huilin,Liu Lequan,Ye Jinhua,Wang Defa
As one of the most promising routes for production of low-carbon olefins (e.g., ethene and propene etc.), methanol-to-olefins (MTO) reaction is influenced largely by the temperature. Noble metal (e.g., Au, Ag, etc.) nanoparticles are known to exhibit the localized surface plasmon resonance (LSPR) effect, which has been applied in photothermal reactions. Owing to the increased light absorption ability in near-infrared region, titanium nitride (TiN) nanoparticles exhibit a superior LSPR effect over noble metals. Herein, we report on the MTO reaction via photothermal effect over a series of TiN(x)/SAPO-34 (x = 0.5, 0.75, 1, 2, 5, 10, 13 wt%) catalysts prepared by a simple mechanical grinding method. The MTO reaction over TiN(x)/SAPO-34 was carried out under a 300 W xenon lamp irradiation. The MTO reactivity of TiN(x)/SAPO-34 was influenced by both the photothermal temperature from the LSPR effect of TiN nanoparticles and the Brønsted acid sites on SAPO-34, both of which were dependent on the loading amount of TiN nanopartiles. The synergistic effect of high photothermal temperature, sufficient Brønsted acid sites and moderate BET surface area gave rise to the optimal catalytic performance of MTO reaction over TiN(10)/SAPO-34, which exhibited a methanol conversion of 73.1% and an ethene selectivity of 62.5%. Graphic Abstract
研究领域:
化学工程
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材料科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yanhua Lei,Haifeng Lan,Bochen Jiang,Yuan Yuan,Dmitry A. Vorontsov,Guanhui Gao,Yuliang Zhang,Qing Chen
Current advancements in anti-icing coatings emphasize the integration of photothermal, electrothermal, and superhydrophobic features to significantly enhance de-icing efficiency. However, these multifaceted coatings often involve intricate preparation methods and costly materials, making them susceptible to damage and reduced durability. This research aims to overcome these challenges by combining active and passive anti-icing principles to achieve full-time efficient anti-icing. A novel strategy is devised to modify the wettability of epoxy resins by grafting a fluorinated oligomer using a curing agent bridging technique. By utilizing micron-sized Titanium Nitride (TiN) and nanosized Acetylene Black fillers within a fluorine-modified epoxy resin, applied through a simple spray technique, the resulting coating exhibits excellent photothermal, electrothermal, and superhydrophobic properties. Evaluations confirm the coating’s robust mechanical durability for extended operational use and its stabilized effectiveness in photothermal and electrothermal de-icing. Notably, this approach maintains electrical conductivity by eliminating the filler hydrophobic modification, also enhancing the mechanical performance of nanocarbon-based multifunctional anti-icing coatings. Moreover, it simplifies the manufacturing process, reduces cost of coating materials, and enables broad application across various substrate surfaces.
研究领域:
材料科学
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表面工程
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涂层技术
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产品关联
DOI
高影响因子
ELECTROCHEMISTRY COMMUNICATIONS
·
2019
·
IF 4.197
Shenghong Kang,Jialu Wang,Shengbo Zhang,Cuijiao Zhao,Guozhong Wang,Weiping Cai,Haimin Zhang
Here we report that the plasma-etching processed commercial titanium nitride (TiN-PE, PE represents plasma-etching) that was first treated by ball-milling method (TiN BM, BM represents ball-milling) is highly electrochemically active for the nitrogen (N 2 ) reduction reaction (NRR) to NH 3 . The results demonstrate that the TiN-PE as NRR electrocatalyst can deliver a yield rate of NH 3 of 3.32 × 10 −10 mol s −1 cm −2 (4.1 mg h −1 g cat. −1 ) with a Faradaic efficiency of 9.1% at −0.6 V ( vs. RHE) in 0.1 M Na 2 SO 4 solution (pH = 3.2). The X-ray photoelectron spectroscopy (XPS) analysis indicates that the titanium oxynitride (TiO x N y ) with high oxygen content on TiN surface was significantly enhanced by this plasma-etching approach, which is electrocatalytically active species for NRR. The 15 N isotopic labeling experimental results using 15 N 2 as the feeding gas verify that the syntheized NH 3 product during NRR is composed of 15 N in 15 NH 4 + (the enrichement of 64%) and 14 N in 14 NH 4 + (the enrichment of 36%), indicating that the NRR process follows the Mars–van Krevelen mechanism.
研究领域:
材料科学
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电化学
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催化反应
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 14
·6065-6073
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IF 9.931
Haoxiong Nan,Dai Dang,Xin Long Tian
The development of both effective and robust catalysts is crucial for the commercialization of polymer electrolyte membrane fuel cells since the reactivity and durability of the catalysts determine its ultimate lifetime and activity. Herein, we developed a facile approach for the synthesis of porous and hierarchical mono- or bi-metallic titanium nitride nanotubes (NTs), and this robust non-carbon material was used as the Pt support. The optimized catalyst (Pt/Ti0.9Ni0.1N NTs) demonstrated a mass activity of 0.78 A mgPt−1 and a specific activity of 1.3 mA cm−2 at 0.9 V (vs. RHE), which is roughly 3.6 times that of the commercial Pt/C catalyst. In particular, the catalyst exhibited excellent stability, such that the mass activity remained 3.2 times greater than that of pristine commercial Pt/C even after 15 000 continuous cycles at up to 1.2 V; in addition, the structure of the catalyst was perfectly maintained. The experimental data demonstrates that the hollow and porous structures, the strong metal-support interaction, and the synergistic effects derived from the nickel doping contribute to the improved performance and durability of the catalyst. This study paves the way for the rational synthesis of robust non-carbon catalysts that can be applied in a wide range of energy conversion processes.
研究领域:
材料科学
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能源工程
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2015
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IF 4.097
Fen-Ying Kong,Sai-Xi Gu,Jing-Yi Wang,Hai-Lin Fang,Wei Wang
We demonstrate herein a newly developed electrochemical sensor base on the reduced graphene oxide–titanium nitride (RGO–TiN) nanohybrid . The nanohybrid was prepared by mixing the TiN nanoparticles and GO dispersion and then treating with glucose and Zn foils. The morphologies and microstructures of the as-prepared nanohybrid were characterized by UV–vis absorption spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy and Raman spectroscopy. The as-prepared RGO–TiN nanohybrid exhibited excellent electrocatalytic activity toward the simultaneous detection of acetaminophen (ACOP) and 4-aminophenol (4-AP). As a result, the linear detection ranges were 0.06–660 μM for ACOP and 0.05–520 μM for 4-AP, respectively, with the low detection limits of 0.02 μM for ACOP and 0.013 μM for 4-AP. Based on the excellent performance, it was demonstrated that the prepared RGO–TiN nanohybrid was a promising candidate for advanced electrode material in electrochemical sensing field and the as-prepared RGO–TiN nanohybrid may find more applications for the detection of various analytes.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Fangyong Yu,Yujiao Xie,Huiqin Tang,Naitao Yang,Xiuxia Meng,Xiaobin Wang,Xin Long Tian,Xu Yang
Alloying Pt electrocatalysts with the second transition metal (e.g., Fe, Co, Ni and Cu) is an effective strategy to boost the methanol oxidation reaction (MOR) and simultaneously reduce the catalyst cost for the direct methanol fuel cells. However, the durability issues caused by the leaching of the transition metals for prolonged time and carbon corrosion hinder the practical applications of the Pt alloys. Herein, for the first time, a facile and robust strategy is developed to synthesize titanium nitride and copper doped titanium nitride with porous and hierarchical tubular structures (labeled as TiN NFs and Ti 0.9 Cu 0.1 N NFs, respectively). When used as the Pt support, both of Pt/TiN NFs and Pt/Ti 0.9 Cu 0.1 N NFs exhibit much enhanced activity and durability compared with the commercial Pt/C catalyst. The experimental data confirms that the leaching of the transition metal can be significantly impeded by this strategy while their advantageous properties that favors MOR activity for the Pt based catalysts are maintained. This work opens a new path for maximizing the MOR activity and stability by introducing porous binary transition metal nitride as the Pt support, which integrates the advantages of high stability, co-catalysis and doping effects.
研究领域:
材料科学
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化学工程
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能源科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
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2020
·Vol. 8
·期 31
·15774-15781
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IF 11.301
Xiangjian Meng,Weiliang Qi,Wandi Kuang,Samira Adimi,Haichuan Guo,Tiju Thomas,Siqi Liu,Zhenping Wang,Minghui Yang
Transition metal nitrides (TMNs) are emerging as a feasible alternative to noble metal co-catalysts in photocatalytic hydrogen production. Considering the recent prospects created by multicomponent systems, it is reasonable to investigate multi-component TMNs for photocatalytic hydrogen production. Herein, in an effort in that direction, ternary chromium-titanium nitride (Cr0.5Ti0.5N) nanoparticles have been synthesized by a solid–solid phase separation method, resulting in highly efficient co-catalysts for promoting photocatalytic hydrogen production of semiconductors under visible light irradiation. Both experimental results and density functional theory (DFT) calculations demonstrate that ternary Cr0.5Ti0.5N offers a comprehensive advantage by boosting the photo-induced charge carrier separation and migration, improving the reaction kinetics as compared to those of TiN and CrN. Therefore, the optimal Cr0.5Ti0.5N-based sample exhibits the highest photocatalytic hydrogen evolution rate of 2.44 mmol g−1 h−1, and has ∼120 times better kinetics than the reference pure CdS sample. In fact, this result even surpasses that of Pt-based nanocomposites (2.06 mmol g−1 h−1).
研究领域:
材料科学
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能源科学
✓ 已验证
DOI
高影响因子
Materials Futures
·
2022
·Vol. 1
·期 4
·045102
·
IF 0
Ruijia Liu,Na Li,Enyue Zhao,Jinkui Zhao,Lingxu Yang,Wenjun Wang,Huijun Liu,Chaoliu Zeng
Transition metal nitrides (TMNs), including titanium nitride (TiN), exhibit remarkable application prospects as anodes for durable high-rate lithium-ion batteries (LIBs). Regrettably, the absence of simple synthesis methods restricts their further development. Herein, a facile and low-cost molten salt synthesis strategy was proposed to prepare carbon-anchored TiN nanoparticles as an advanced anode material for LIBs with high rate capabilities. This nanosized TiN obtained is ∼5 nm in size and well-distributed onto carbon plates, which could release a reversible capacity of ∼381.5 mAh g−1 at 0.1 A g−1 after 250 cycles and ∼141.5 mAh g−1 at 1.0 A g−1 after 1000 cycles. Furthermore, it was confirmed that the conversion reaction between TiN and Li-ions happened during the electrochemical reaction process, resulting in the formation of Li3N and Ti. This unique microstructure attributed from TiN nanoparticles anchored by carbon could support the structural volume during cycling. This work highlights the method superiority of TiN prepared via a molten salt synthesis strategy as an anode for LIBs with impressive rate performances.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
·
2016
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IF 1.276
Xin Zhang,Zhuang Wang,Se Wang,Hao Fang,Fan Zhang,De-Gao Wang
Freshwater dispersion stability and ecotoxicological effects of titanium nitride (TiN) with particle size of 20 nm, 50 nm, and 2–10 μm in the presence of dissolved organic matter (DOM) at various concentrations were studied. The TiN particles that had a more negative zeta potential and smaller hydrodynamic size showed more stable dispersion in an aqueous medium when DOM was present than when DOM was absent. Biochemical assays indicated that relative to the control, the TiN particles in the presence of DOM alleviated to some extent the antioxidative stress enzyme activity in Scenedesmus obliquus. In addition, it was found that the TiN with a primary size of 50 nm at a high concentration presented a significant impact on non-enzymatic antioxidant defense in algal cells.
研究领域:
环境科学
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毒理学
✓ 已验证
DOI
高影响因子
RSC Advances
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2025
·Vol. 15
·期 8
·6089-6099
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IF 4.6
Xinyu Jing,Xi Chen,Mingchuan Zhang,Xinyang Xu
In this study, the in situ growth method was employed to modify biochar with polypyrrole–titanium (PPy–TiN) nitride composites, aiming to enhance its performance as an anode material in microbial fuel cells (MFCs). A series of characterizations were conducted on the polypyrrole-modified corn straw biochar anode (PPy/CS), titanium nitride-modified corn straw biochar anode (TiN/CS), and polypyrrole/titanium nitride composite-modified biochar anode (PPy–TiN/CS) to evaluate the feasibility of the modification method and identify the optimal modification scheme. Characterization techniques included scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS), and Tafel analysis. SEM and FTIR analyses confirmed the successful integration of polypyrrole and titanium nitride with biochar, achieving a minimum solution resistance of 7.80 Ω and charge transfer resistance of 1.79 Ω. Compared to the unmodified electrode, the modified electrodes demonstrated improved performance, highlighting the need for the development of cost-effective, efficient, and durable anode materials.
研究领域:
环境科学
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材料科学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Ziqi Liu,Ruolin Zhao,Feifan Hong,Sizhi Ding,Jiakun Yang,Renhuan Li,Yi Fan,Haizhen Liu,Jin Guo,Zhiqiang Lan
Hydrogen storage materials are the primary solution for addressing safety concerns in hydrogen energy storage and transportation. Despite the advantages of magnesium-based hydrogen storage materials, such as high capacity and good reversibility, their poor kinetic performances severely limit their practical applications. In this study, the synthesis of titanium nitride supported on carbon (TiN@C) was achieved through a controllable hydrothermal method , aiming to enhance the hydrogen storage performances of MgH 2 .With the catalytic action of TiN@C, MgH 2 could rapidly release over 6.0 wt% of hydrogen at 300 °C within 15 min, while the onset dehydrogenation temperature decreased to 226 °C. The dehydrogenated MgH 2 could reabsorb 5.80 wt% of hydrogen at 200 °C for 15 min with a reduced activation energy of 44.9 kJ·mol −1 , demonstrating excellent kinetic performance. Mechanism analysis revealed that the multiphase interface between MgH 2 (Mg) and TiN@C significantly improved the hydrogen desorption kinetics of materials, especially TiN and the in-situ formed TiH 2 were the main reasons for improving the hydrogen storage performance of materials.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）