SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yanpei Xu,Silong Li,Shuxian Gao,Fudong Jia,Liang Guo,Jiangrong Hou,Shaowei Ma,Heya Zheng,Chuxiao Sun,Qi Wang
Prostate-specific antigen (PSA) detection is vital for early prostate cancer diagnosis, yet conventional methods suffer from sensitivity and label-dependent limitations. This study presents a surface plasmon resonance (SPR) biosensor enhanced by Ni(OH) 2 /Ti 3 C 2 T x MXene nanocomposites (NTC) for sensitive detection of total PSA (tPSA) in serum. The NTC architecture synergizes carboxyl-functionalized MXene, amplifying localized electric fields and antibody-binding sites, with Ni(OH) 2 nanoflowers that prevent MXene stacking and enhance refractive index (RI) sensitivity. Optimized via finite element modeling (50-nm Au film, 72.4 ° incident angle), the Au-NTC architecture achieved a 39.34% improvement in RI sensitivity (3064.86 nm/RIU) compared to pristine Au. Through the dual signal amplification mechanism of synergistic enhancement by nanomaterials and sandwich method with gold nanoparticles, enabled detection of tPSA in 20% serum across a wide dynamic range (0.2–160 ng/mL), fully covering the clinical risk threshold (4–10 ng/mL). The platform demonstrated an ultralow limit of detection (LOD) of 0.0361 ng/mL (0.5157 pM) and high specificity against interferons. Kinetic analysis revealed strong antigen-antibody affinity (equilibrium dissociation constant K D = 4 . 26 × 1 0 − 10 M), while batch-producible sensor chips and integrated microfluidics underscored practical applicability. This work advances label-free SPR biosensing for precision prostate cancer diagnostics, offering significant potential in point-of-care testing and early intervention strategies.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Sifan Bao,Xudong Zheng,Zihuai Xu,Zhouzhou Yang,Wei Sun,Jinfeng Mei,Jian Rong,Zhongyu Li
Carbon aerogel is limited in its application in CO 2 capture due to its poor surface properties. Heteroatom doping is conducive to the adsorption of CO 2 by biochar. Therefore, by in-situ synthesis of nitrogen-doped carbon nanotubes on BC, Ni/N co-doped cellulose carbon aerogel was synthesized, and the results showed excellent adsorption capacity and reversible adsorption/desorption properties. The synthesis of nitrogen-doped carbon nanotubes made the material realize N doping and provided more adsorption sites for CO 2 adsorption. When Ni is dispersed in the material, it not only increases the carbon dioxide adsorption sites but also enhances the thermal stability and cycling performance of the composite material. Meanwhile, the coordination effect between nickel and nitrogen further enhances the capture capacity of carbon dioxide. Ultimately, the adsorption capacity of the modified biochar reached 4.89 mmol/g, and it also has good recycling performance. The unique co-doping design strategy reduces the dependence of traditional carbon materials on surface area when adsorbing CO 2 , providing a new direction for the modification of carbon materials.
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APPLIED CATALYSIS A-GENERAL
·
2025
·
IF 4.8
Chi Zhang,Junwen Zhang,Lina Che,Xusheng Wang,Li Shi
Photothermal technology offers distinct advantages for catalytic CO 2 methanation. Herein, we synthesized a series of Ni-based catalysts (denoted as TiO 2-x /Ni-X) through controlled calcination of NiTi-layered double hydroxides (LDHs) precursors at 400–700°C. In a continuous-flow system under xenon lamp irradiation (3.2 W/cm²), the TiO 2-x /Ni-X catalysts exhibited a reduction temperature dependent CH 4 production rate. During 40-hour stability testing, the optimized TiO 2-x /Ni-550 catalyst achieved a sustained CH 4 production rate of 180 mmol g cat −1 h −1 with a remarkable near-unity selectivity (>99 %), and the light irradiation substantially enhanced the CH 4 yield compared to bare thermal catalysis. Comprehensive structural characterization and mechanistic studies revealed competing roles governing catalytic activity, with TiO 2-x /Ni-550 demonstrating an optimal balance for CH 4 generation kinetics.
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2025
·
IF 2.6
Bi Mengqi,Liu Wei,Yang Menghui,Huang Naibao
To enhance the corrosion resistance of 316L stainless steel, which is a potential alternative bipolar plate material for PEMWE or PEMFC, Ni–P amorphous coating was prepared by DC electrodeposition method. The results indicated that the coating’s structure strongly related to the phosphorus (P) content. Under specific phosphorus content conditions, a dense coating (Ni–P-30) with typical amorphous characteristics can be obtained, with a uniform surface morphology and no obvious structural defects. In simulated PEMWE environment, Ni–P-30’s corrosion current density decreased by one order of magnitude and the corrosion potential shifted positively by 0.29 V comparing with untreated steel. The excellent corrosion resistance of the amorphous Ni–P coating is attributed by its continuous and dense microstructure, functioning as an effective physical barrier. Meanwhile, during corrosion process, the P will enrich on the surface from the preferential dissolution of nickel in amorphous Ni–P coatings, improving the corrosion potential, reducing the corrosion current and inhibiting the hydration of Ni. Preliminary studies have shown that Ni–P-coated 316L stainless steel can be used as a replacement for graphite as a bipolar plate for PEMWE and PEMFC.
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IONICS
·
2025
·
IF 2.6
Wang Zhaomin,Zhao Chaoyue,Niu Xiaodong,Cheng Yong,Wang Limin,Huang Pai
With high theoretical discharge specific capacity, excellent reversibility of electrochemical reaction, and suitable oxygen evolution overpotential, α -Ni(OH) 2 is an auspicious cathode material for alkaline batteries, which supports the development of high-capacity nickel-based batteries. Nevertheless, α -Ni(OH) 2 exhibits substandard structural stability and is susceptible to crystalline transformation, leading to capacity degradation, affecting the battery charge/discharge performance and cycle life. In this study, the TiO 2 -nickel hydroxide (TiO 2 - α -Ni(OH) 2 ) is prepared by high-energy ball milling. Among them, TiO 2 can be uniformly dispersed on the surface of α -Ni(OH) 2 , which can effectively prevent the collapse of the α -phase structure. Benefiting from the unique elemental doping technology, the TiO 2 - α -Ni(OH) 2 composites as a nickel-metal hydride (Ni-MH) battery cathode can release a reversible specific capacity of 390 mAh g −1 at a 2 C rate for 200 cycles. A reversible specific capacity of 210 mAh g −1 is still released after 200 cycles at a 5 C rate. Consequently, TiO 2 - α -Ni(OH) 2 is a promising candidate for high-power Ni-MH batteries.
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INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
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2025
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IF 2.5
Zhiyuan Chen,Ling Wang,He Lu,Haoyong Yin,Shengji Wu
A portable and highly sensitive electrochemical sensor for nitrite detection was developed using a NixSy/Ni/N-doped carbon nanotube (N-CNT) nanocomposite. The hybrid was fabricated by in situ growth of Ni nanoparticles on MOF-derived N-CNTs followed by hydrothermal sulfidation to form NixSy. This hierarchical nanostructure provided abundant active sites, large surface area, and enhanced conductivity. Electrochemical studies revealed outstanding nitrite sensing performance, with a wide linear range (0.2 μM–22 mM), high sensitivity (163.77 μA mM−1 cm−2), and a low detection limit (0.2 μM). The sensor showed excellent selectivity, reproducibility, and stability. Real sample analyses, including water, beverages, and pickled brine, yielded recoveries of 98.71–103.87% with low RSDs. A smartphone-integrated portable sensing system was also demonstrated, enabling accurate on-site nitrite monitoring. This work offers an effective strategy for designing advanced, field-deployable electrochemical sensors for food safety and environmental analysis.
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CHEMPHYSCHEM
·
2025
·
IF 2.2
Li Ma,Wei-Ming Yang,Lin Xue,Jie Zhang,Ke-Xin Lin,Pei-Jian Chen,Xiang Zhang,Hai-Shun Liu
Graphical The co-catalysis of iron-nickel bimetals can not only achieve the complete degradation of organic pollutants but also continue to be recycled. The introduction of Ni enhances the reducibility of the 3D Fe 50 Ni 50 catalyst surface, promotes electron transfer, enriches the surface with Fe (II) during degradation, maintains activity, and provides a self-healing effect. Advanced oxidation processes offer a potent, eco-friendly solution for degrading organic wastewater. Creating high-activity and stability catalysts is crucial to addressing water pollution concerns. Nevertheless, due to constraints in their preparation, prevalent catalysts often lack satisfactory cyclic stability and pose challenges in recovery. This research introduces an innovative catalyst, the 3D printed Fe-Ni porous framework (3D Fe 50 Ni 50 ), characterized by its high activity, robust stability, and straightforward recovery process. The catalytic performance of 3D Fe 50 Ni 50 is attributed to the synergistic effects of its bimetallic constituents and its distinct porous architecture. Under optimal conditions, the kinetic reaction constant reaches 1.56 min −1 . It represents a 26-fold increase over commercially available Fenton's reagent ZVI powder. And the Fe 50 Ni 50 catalyst can be employed cyclically up to 132 times, maintaining a degradation efficiency of over 90% relative to its initial performance. The findings of this article suggest that incorporating Ni augments the catalyst surface's reducibility, facilitating electron transfer. This bestows the catalyst with a nice self-healing ability, ensuring sustained degradation. This investigation paves the way for the design of catalysts with heightened activity and stability and presents promising applications in wastewater treatment.
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PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 3
·779-789
·
IF 2.936
Guo Guangkai,Zhong Dazhong,Zhao Tao,Liu Guang,Li Jinping,Zhao Qiang
It is important to develop active, stable, and cost-effective electrocatalysts for highly efficient overall water splitting. Metal organic frameworks were considered as efficient precursors for overall water splitting catalysts. In this paper, NC/Ni–Co 3 O 4 @Co 1−x S with small size is obtained from ZIF-67. NC/Ni–Co 3 O 4 @Co 1−x S materials exhibit superior overall water splitting properties, with a low overpotential of 170 mV for the hydrogen evolution reaction at 10 mA cm −2 and 210 mV for the oxygen evolution reaction at 10 mA cm −2 and long-term stability. Furthermore, the overall water splitting only requires 1.64 V to drive the current density of 10 mA cm −2 , when the NC/ Ni–Co 3 O 4 @Co 1−x S are used as both anode and cathode. NC/Ni–Co 3 O 4 @Co 1−x S has excellent electrocatalytic activity due to its nanosheet structure, which greatly increases the electrochemically active surface area and the NC/Ni–Co 3 O 4 @Co 1−x S has good electrical conductivity and abundant Co 3+ sites, so the electrocatalytic activity is significantly enhanced. This study provides a new idea for the design and synthesis of novel composite electrocatalysts. Graphical
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2020
·Vol. 29
·期 11
·7239-7249
·
IF 1.652
Sang Changcheng,Cai Xiaoping,Zhu Lu,Ren Xuanru,Niu Gao,Wang Xiaohong,Feng Peizhong
To achieve the low energy consumption and high strength joining between Ti and Ni, a novel joining method (rapid thermal explosion, TE) was developed for joining dissimilar metals using Ti-Al mixture powders as flux. The TE reaction temperature of Ti-Al flux was measured, and the microstructure and mechanical properties of Ti/Ni joint were investigated. The results reveal that the combustion temperature of the Ti-Al powder interlayer is 1103 °C, which is higher than the joining temperature, and an obvious self-exothermic phenomenon lasts 20 s. The intermetallic compound diffusion layers formed at both interfaces mainly owing to the diffusion of Al and the growth activation energy of diffusion layers near both interfaces are 79.68 kJ/mol and 38.26 kJ/mol, respectively. Based on the sheer strength and diffusion layer, the formation mechanism of Ti/Ni joints is metallurgical bonding through atomic diffusion and formation of the diffusion layer.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Bao Zhang,Chao Zheng,Zhiming Xiao,Keyi Xian,Heng Wen,Na Lu,Xinyou He,Long Ye,Jiexi Wang,Xing Ou,Chunhui Wang
Nickel-rich cobalt-low layered oxides have attracted much attention as positive electrode materials for high-energy lithium-ion batteries due to their high capacity and low cost, but their inherent stress accumulation and severe cationic mixed reactions will deteriorate the cycling performance. Herein, the nickel-rich single-crystalline LiNi 0.90 Co 0.06 Mn 0.04 O 2 cathode material doped with W and Mg (NCM-WM) has been fabricated to overcome its structure degradation issues. It can be found that the Li/Ni cation mixture can be suppressed by the introduction of Mg 2+ into Li + situs and the replacement of transition metal ions by W 6+ . Meanwhile, the co-doing strategy synergistically depresses the irreversible H2-H3 phase transition to weaken the internal stress, and employs the heteroatoms as the pillar ions to prevent layer structure collapse. In addition, the reduced particle size induced by the W 6+ and increased free electron resulted by Mg 2+ can cooperatively improve the migration kinetics of ions and electrons in the process of cycling. As expected, the above advanced effects result in the prominent cycling properties (capacity retention of 86.7 %, 150 cycles, 2C) of the designed Ni-rich electrode materials. These results demonstrate that the co-doped design is a greatly effective strategy to reinforce the cycling performance of Ni-rich single-crystalline materials.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Yunfeng Wang,Yingang Gui,Shasha He,Jiacheng Yang
The application of conventional sensors is limited due to energy supply issues and environmental problems, and current triboelectric nanogenerator (TENG) based self-powered sensing systems is hard to meet the specific requirement. In this paper, TiO 2 /Ni/C composites were prepared using MOF-derived Ni/C materials for SO 2 F 2 detection at room temperature. The excellent pore structure and high electrical conductivity of Ni/C material greatly improve the sensitivity properties of TiO 2 . The TiO 2 /Ni/C composites-based SO 2 F 2 sensor exhibits a wide detection range of 5–200 ppm concentration and a fast response/recovery time of 26 s/9 s, while its response value for 200 ppm SO 2 F 2 is 18.34 times higher than that of the pure TiO 2 -based sensor. Furthermore, by modifying the PVDF film with TiO 2 , the permittivity of PVDF is greatly improved, and the surface potential is 2.6 times higher than that of pure PVDF film. Eventually, a dual-layer hybrid TENG based on TiO 2 /PVDF composite film was constructed. Its upper TENG powers the TiO 2 /Ni/C composite sensor, and the lower hybrid TENG drives the thermohygrometer to realize a self-powered temperature and humidity-corrected SO 2 F 2 sensing system, which can accurately implement SO 2 F 2 gas concentration alarms at 10 ppm, 50 ppm, and 100 ppm at different humidity levels. This work broadens the application of TENG in the field of self-powered gas sensing while providing a new idea to achieve the trace detection of SO 2 F 2 at room temperature.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Yongkun Liu,Qiuling Lu,Zheng Huang,Shiqing Sun,Bo Yu,Uwamahoro Evariste,Guohua Jiang,Juming Yao
In this work, a novel flexible electrode material for supercapacitor is prepared by electrodeposition of Ni-Co-S interconnected nanosheet arrays on N-doped hierarchical porous carbon nanofibers (Ni-Co-S@N-pCNFs). The electrode exhibits a remarkable specific capacitance of 520.2 F g -1 at the current density of 0.2 A g −1 and 670 F g -1 at 2 mV s −1 . The activated charcoal (AC) loaded N-doped porous carbon nanofibers (AC@N-pCNFs) as electrode is also prepared which exhibits a specific capacitance of 257.2 F g -1 at 0.2 A g −1 , as well as excellent cycling stability with a capacitance retention of 92.6% after 5000 cycles. Furthermore, the Ni-Co-S@N-pCNFs as the positive electrode , active carbon loaded N-doped hierarchical porous carbon nanofibers (AC@N-pCNFs) as negative electrode , and KOH/NKK hybrids as both the electrolyte and separator are assembled into flexible asymmetric supercapacitor . The assembled supercapacitor device without using any current collectors or binders shows a high energy density of 21.6 Wh·kg −1 at a power density of 134.9 W kg −1 and robust long-term cycling stability retaining over 90.0% after 3000 cycles at 1.0 A g −1 . The as-assembled asymmetric supercapacitors (ASCs) have an outstanding mechanical flexibility and electrochemical stability and no significant attenuation occurred during cycling under different bending states.
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