Materials Chemistry Frontiers
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2025
·
IF 6.4
Jun Song,Minghao Kang,Yongping Li,Jiaqing Guo,Huibo Wang,Liwei Liu,Junle Qu,Shuai Ye
Due to their excellent biocompatibility, outstanding water dispersibility, and multifunctional integration capability, carbon dots have emerged as highly promising materials for cancer phototherapy. In this study, nickel-doped carbon dots (Ni-CDs) were successfully synthesized via a one-step hydrothermal method, which enables efficient and uniform Ni incorporation within the carbon framework. Ni-CDs exhibit strong absorbance in the range of 840–1100 nm. They have a reactive oxygen species (ROS) production rate of 3.27% and a photothermal conversion efficiency of 61.33% under 1064 nm laser irradiation. The enhanced dual-mode performance can be attributed to Ni-induced nonradiative relaxation and improved electron transfer. They are the first reported nickel-doped carbon dots with synergistic therapeutic capabilities of PDT/PTT in the NIR-II region. In vitro and in vivo experiments demonstrated that Ni-CDs can effectively induce tumor cell death, with no significant toxic damage observed in normal tissues/organs. This study highlights the potential of Ni-CDs as a multifunctional nanoplatform for deep-tissue cancer treatment, providing a reference for the design of materials for the synergistic combination of photothermal and photodynamic therapy of deep tumors.
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高影响因子
NANO
·
2025
·
IF 1.1
Xiaoying Lin,Lifang Xu,Songye Lin,Hao Lin,Tao Guo,Yuqi Li,Yamin Liu
The synthesis of magnetic porous carbon nanocomposites derived from a nickel-based metal-organic framework (Ni-MOF) via a simple solvothermal approach is reported herein. The potential of these materials for the adsorption of methyl blue (MB) dye was investigated. The physicochemical properties of the Ni-MOF-C materials were comprehensively characterized using powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectrometry (EDS), N 2 adsorption/desorption isotherms, and vibrating sample magnetometry (VSM). At a carbonization temperature of 550 ∘ C, Ni-MOF-C exhibited a maximum specific surface area of 162.17 m 2 /g and saturation magnetization of 32.27 emu/g. The material was employed for the physical adsorption of Coomassie methylene blue dye, with adsorption influenced by pH, initial dye concentration, contact time, and temperature. Under optimized conditions, including a feed pH of 10, an initial dye concentration of 1000 mg/L, a contact time of 60 min, and a temperature of 55 ∘ C, Ni-MOF-C-550 ∘ C demonstrated its highest MB dye adsorption capacity. Furthermore, the observed adsorption behavior was effectively described by both the Freundlich isothermal adsorption model and the quasi-second-order kinetic model.
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高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·
IF 3.3
Zhouwei Li,Lianzhong Shen,Yu Ye,Qizhou Dai
An Ni-doped PbO2 electrode (Ti/TNAs/Ni-PbO2) with titanium dioxide nanotube arrays (TNAs) self-growth on the titanium metal surface as an intermediate layer was prepared by electrodeposition. Characterization and electrochemical testing of the Ti/TNAs/Ni-PbO2 showed a denser surface structure, a larger surface active area (0.50 m2 g-1), and smaller crystallite size (38.61 nm), which provided more surface active sites and promoted the generation of hydroxyl radicals (•OH). The electrocatalytic ozonation process was established using the electrode. The sulfamethazine (SMT) was selected as the target contaminant. The performance on SMT removal in electrocatalytic ozonation was systematically evaluated. The effects of initial SMT concentration, current density, electrolyte concentration, initial pH, and ozone dosage on the degradation rate of SMT and chemical oxygen demand (COD) removal were also investigated. Under optimal conditions, after 60 min of degradation, the removal rates of SMT and COD reached 100% and 46.13%, respectively. Intermediates in the degradation process were identified by ultra-performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry, and the degradation mechanism and degradation pathways of the Ti/TNAs/Ni-PbO2 anode in the electrocatalytic ozonation process were explored. The excellent efficacy and stability of this anode in this process were verified and showed a potential for widespread application in highly concentrated organic wastewater treatment
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高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hui Hua Peng,Liang Zhang,De Yi Jiang,Jie Chen
Rhombohedral MnCO 3 nanoparticles were successfully grown on nickel foam via a facile and one-pot water-bath means, wherein the hydrolyzation of urea supplied alkali and carbonate ions. The structure and morphology of the nanocomposites were investigated by XRD, FIB/SEM and elemental mapping. Microscopic investigations revealed MnCO 3 particles with mean sizes that varied from 110-255 nm. EDS mapping showed a homogeneous distribution of manganese, carbon and oxygen. The electrochemical properties of the produced composites were estimated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS) measurements using 6 M KOH as the electrolyte. The resulting electrodes displayed maximum specific capacitance (163.7 F g -1 at 0.5 A g -1 ), respectable rate capability, and excellent long-term cycling life (91% retention after 1000 cycles). In addition, this manuscript offers us a simple and rapid strategy for the fabrication of electrode materials for use as energy storage devices.
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高影响因子
Russian Journal of Physical Chemistry A
·
2023
·Vol. 97
·期 13
·2966-2975
·
IF 0.7
Liu Kun,Zhu TianHan,Li Feng,Wang Jing,Song Hua
A series of Ni/SiO 2 –Al- x catalysts ( x is the initial mass ratio of SiO 2 to Al(NO 3 ) 3 ) with different aluminum contents was prepared by impregnation method using nickel nitrate as the Ni source. The prepared Ni/SiO 2 –Al- x catalysts were characterized by XRD, BET, TPR, TEM, XPS, NH 3 -TPD, and Py-FTIR methods. Taking m -cresol as a model compound, the effects of aluminum content and reaction conditions on the HDO performance were investigated. Results showed that addition of appropriate amount of aluminum can generate acid sites and improve the metal Ni dispersion by increasing the surface area of catalyst. Furthermore, the selectivity to deoxygenated methyl-cyclohexane product over aluminum modified Ni/SiO 2 –Al- x catalysts increased significantly as compared to that of Ni/SiO 2 , which confirmed the importance of aluminum addition on the dehydration of 3-methyl-cyclohexanol to methyl-cyclohexane. Among the prepared Ni/SiO 2 –Al- x catalysts, the Ni/SiO 2 –Al-5 catalyst exhibits the best HDO performance. A 100% m -cresol conversion with the selectivity to MCH of 100% was achieved under the conditions of T = 250°C, p = 2 MPa, t = 75 min with catalyst (mg)/ m -cresol solution = 2.
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高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2012
·Vol. 19
·期 2
·501-508
·
IF 5.925
Jianwei Nai,Zhengbo Chen,Haopeng Li,Fangyuan Li,Yang Bai,Lidong Li,Lin Guo
As the properties of nanomaterials are strongly dependent on their size, shape and nanostructures, probing the relations between macro-properties and nanostructures is challenging for nanoscientists. Herein, we deliberately chose three types of Ni(OH) 2 with hexagonal, truncated trigonal, and trigonal hourglass-like nanostructures, respectively, as the electrode modifier to demonstrate the correlation between the nanostructures and their electrocatalytic performance towards L -histidine. It was found that the hexagonal hourglass-like Ni(OH) 2 sample had the best electrocatalytic activity, which can be understood by a cooperative mechanism: on one hand, the hexagonal sample possesses the largest specific surface area and the tidiest nanostructure, resulting in the most orderly packing on the electrode surface; on the other hand, its internal structure with the most stacking faults would generate a lot of unstable protons, leading to an enhanced electronic conductivity. The findings are important because they provide a clue for materials design and engineering to meet a specific requirement for electrocatalysis of L -histidine, possibly even for other biomolecules. In addition, the hexagonal Ni(OH) 2 -based biosensor shows excellent sensitivity and selectivity in the determination of L -histidine and offers a promising feature for the analytical application in real biological samples. Graphical Structure-dependent performance : Three different types of Ni(OH) 2 with hexagonal, truncated trigonal, and trigonal hourglass-like nanostructures, respectively, were deliberately chosen as electrode modifiers to demonstrate the correlation between the structures and their electrocatalytic performance toward L -histidine (see figure). The electrocatalytic activity of these unique nanostructures depends not only their external architecture, but also on their relevant internal degree of crystallinity.
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高影响因子
MATERIALS LETTERS
·
2013
·
IF 2.224
Jie Shao,Xuezhang Xiao,Xiulin Fan,Lixin Chen,Hongyi Zhu,Siqi Yu,Zhaodong Gong,Shouquan Li,Hongwei Ge,Qidong Wang
A novel method for the synthesis of amorphous Ni–B nanoparticles has been developed using a mechanochemical displacement reaction by high energy ball milling . Based on various characterizations including XRD , ICP, BET, DSC , SEM, TEM and XPS , the synthesized Ni–B amorphous nanoparticles are present in the form of uniform and homogeneously distributed ultrafine nanoparticles with the size around 5 nm. Larger specific surface area and higher thermal stability can be obtained by such mechanochemical method than the conventional wet-chemical reduction method. The present work provides a novel method for preparation of other amorphous nanoparticles, and greatly expands the industrial application space of Ni–B amorphous nanoparticles.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·Vol. 44
·期 2
·680-693
·
IF 4.229
Chao Wang,Mingzheng Liao,Enqi Bu,Zhiqiang Jiang,Ying Chen,Zhengdong Cheng,Xianglong Luo,Bo Liang,Riyang Shu,Qingbin Song
In this work, hydrogen production from partial oxidation (POX) of propane over composite Ni/Al 2 O 3 SiC catalyst was investigated. In order to utilize the high thermal conductivity and chemical stability of SiC , the composite Al 2 O 3 SiC support of the catalyst was synthesized by precipitation technique, then Ni component was loaded using impregnation method. The as-prepared samples were characterized by X-ray diffraction, BET, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) measurements. As observed, stacking porous structures were appeared after calcination process by doping SiC with certain ratios. According to the stiochiometric ratio, a C 3 H 8 O 2 (1:1.5) gas mixture was used to study the catalytic activity for hydrogen production from POX of propane. From the results, local overheat of the catalyst bed generated by the exothermic reactions was relieved by doping SiC and Ni/Al 2 O 3 SiC (30 wt%) catalyst performed a higher hydrogen production. Aggregation and carbon deposition of Ni/Al 2 O 3 SiC (30 wt%) catalyst were reduced compared to Ni/Al 2 O 3 from the observation of SEM and TEM with H 2 production up to around 236 μmol/g cat ·s and kept stable for 26 h at 600 °C. By means of TGA , non-isothermal oxidative decarburizations of the spent catalysts were studied. It was found that less carbon deposit and lower activation energy for oxidative decarburization were found by doping SiC to Ni/Al 2 O 3 .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Linjie Gao,Shufang Wang,Ran Liu,Shengjun Zhai,Hongrui Zhang,Jianglong Wang,Guangsheng Fu
Cd 1-x Ni x O ceramics were synthesized by the conventional solid state reaction method and the effect of Ni doping on the thermoelectric performance of CdO was investigated. The introduction of Ni led to dramatic changes in the electrical transport behaviors of CdO ceramics and thus an improvement in power factor, which were suggested to be related to the widening of the band gap as well as the formation of an impurity level in the band gap of CdO after the substitution of Ni 2+ for Cd 2+ . Doping of Ni also had a significant influence on the microstructure of CdO along with the development of NiO second phase when the Ni concentration exceeded 1%, which effectively suppressed the heat transfer by enhanced phonon scattering. Benefiting from the improved power factor and the reduced thermal conductivity , a high ZT of 0.43 was achieved in the Cd 0.99 Ni 0.01 O sample at about 1000 K.
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高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2022
·Vol. 38
·期 6
·1504-1511
·
IF 2.726
He Kai,Liu Shijia,Zhao Guiyan,Qin Yucai,Bi Yanfeng,Song Lijuan
A series of Ni-W catalysts supported on mesoporous SBA-15 with different Ni:W ratios(Ni x W/SBA-15, Ni-5%, x =1, 10, 50) was prepared and fully characterized by powder X-ray diffraction(PXRD), Brunner-Emmet-Teller(BET), transmission electronic microscopy(TEM), H 2 -temperature programmed reduction(H 2 -TPR), and X-ray photoelectron spectroscopy(XPS). High-resolution TEM images, XPS measurements, H 2 -TPR experiments coupled with PXRD results determined the evolution of Ni and W species. It is found that a trace amount of W from H 2 WO 4 can significantly improve Ni dispersion on SBA-15 (Ni 50 W/SBA-15) with Ni 0 and non-stoichiometric WO x species as small as ca . 3.6 nm. The prepared Ni x W/SBA-15 was utilized for CO 2 hydrogenation, which showed that a higher W content restrained the CO 2 hydrogenation while a lower W ratio promoted both conversion rate and selectivity for methane compared with Ni/SBA-15. The Ni 50 W/SBA-15 catalyst showed the best performance with a 93.3% CO 2 conversion rate and 99.7% selectivity for methane at 400 o C under 0.1 MPa and maintained ca . 97% initial performance for 24 h. Tracking product evolution experiments by in-situ Fourier transform infrared spectrascopy(FTIR) indicated that a small amount of W can modify the surface of Ni particles by geometric coverage and electronic modification, which facilitates the adsorption of the CO intermedia and results in the formation of CH 4 . This work provides a new clue to fabricating efficient CO 2 conversion bimetallic materials.
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高影响因子
Catalysis Science & Technology
·
2019
·Vol. 9
·期 18
·5130-5141
·
IF 5.726
Shuang Song,Qiuxiang Liu,Jinhui Fang,Weiting Yu
The reductive dechlorination of chlorinated organic compounds (COCs) is very important to reduce the toxicity of waste effluents produced from pharmaceutical, electronics, dyestuff, pesticide, paper, and plastics industries. Electrochemical dechlorination as a green technology under mild reaction conditions is widely used in the reductive dechlorination of COCs using Pd as the electrode. Currently, the challenges of this method are the need to use large Pd loadings and the low dechlorination efficiency. Efforts were made in this work to reduce the loading of Pd and improve the efficiency using 2,4-dichlorophenoxyacetic acid (2,4-D) as a probe molecule for COCs in dechlorination. In this study, Pd-anchored Ni(OH)2/Ni-foam bifunctional electrodes were prepared in situ and for the first time applied in the reductive dechlorination of COCs. The results indicate that the dechlorination efficiency of 2,4-D can be enhanced on Pd-anchored Ni(OH)2/Ni-foam bifunctional electrodes even at a low Pd loading (<2 mg cm−2). A synergistic effect is found for 2,4-D dechlorination: H* formation on Ni(OH)2 and dechlorination steps on Pd. The enhanced dechlorination efficiency might be related to the shortened transport route between Ni(OH)2 and Pd active centers for H*.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 30
·1912
·
IF 2.8
Wen Jiawei,Zhang Songyang,Chen Jian-an,Zhang Xiaoming,Wang Xin,Huang Guoyong
Titanium niobium oxide (TiNb 2 O 7 , TNO) has become a high-performance anode material for fast-charging lithium-ion batteries due to its high specific capacity, safety advantages and stable cycling performance. Nevertheless, the material’s low electronic/ionic conductivity remains a critical challenge for commercial implementation. The present study presents a novel Ni-doping strategy for TNO that optimizes the electronic structure, achieving a remarkable improvement in lithium-ion storage performance through enhanced charge transfer and ionic diffusion. The Ni 0.02 -TNO anode exhibits a reversible capacity of 240.7 mAh g −1 after 150 cycles at 1C, while retaining 172.9 mAh g −1 even after 1000 cycles under an ultra-high rate of 10C, demonstrating exceptional long-term stability and rate capability. Furthermore, the assembled LiFePO 4 (LFP) ||Ni 0.02 -TNO pouch cell demonstrates outstanding cycling stability, with 86.9% capacity retention over 500 cycles at 1C. Density functional theory calculations reveal that Ni doping reduces the bandgap from 2.193 eV to 0.765 eV, thereby enhancing electronic conductivity and facilitating faster charge transfer kinetics. This work provides a viable pathway for designing advanced lithium-ion batteries with rapid-charging capability and long-term cyclability.
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高影响因子
危险品化学品经营许可证（带存储）