COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Yan Li,Xue Li,Xiao-Tian Wang,Li-Juan Jian,Nihad Ibrahim Mohammed Abdallah,Xiao-Fei Dong,Cheng-Wei Wang
Constructing high efficient nanostructured photocatalysts is meaningful for dyeing wastewater treatment . Herein, a new p-n heterostructured photocatalyst of NiS/BiVO 4 (NiS/BVO) was well designed, synthesized and applied to photodegrade anion organic dye. Coupling p-type NiS nanoparticles on n-type decahedral nanostructured BVO cannot obviously increase the specific surface area , but can effectively increase the light harvesting, enhance the photocurrent response, and promote the separation and transfer of the photo-generated electron-holes. As a result, 0.7 molar ratio of NiS/BVO exhibited the best photocatalytic capability of 95.6 % within 90 min irradiation, possessing the highest degradation rate of 1.7970 h −1 , which is almost 16 and 33 times higher than pure BVO (15.8 %, 0.1134 h −1 ) and NiS (7.9 %, 0.0543 h −1 ). Meanwhile, NiS/BVO has well photocatalytic stability in at least five cycling tests.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhe Yin,Huanyu Chen,Qiuyu Wang,Ziwen Wang,Guoping Yu,Binglin Tang,Man Zhang,Kangzheng Li,Zhichao Zhang,Qingcheng Luo,Tianding Hu,Bo Lv
Converting plastics into organic matter by photoreforming is an emerging way to deal with plastic pollution and produce valuable organic matter. Water shortage can be alleviated by using seawater resources. To solve these problems, we synthesize a ternary heterostructure composite g-C 3 N 4 /CdS/NiS. Heterojunctions are formed between graphitized carbon nitride (g-C 3 N 4 ), cadmium sulfide (CdS) and nickel sulfide (NiS), which effectively improve the problem of fast charge recombination of pure g-C 3 N 4 and CdS. The results of the g-C 3 N 4 /CdS/NiS photocatalytic tests show that the hydrogen production rates in seawater and pure water for 5 h are 30.44 and 25.79 mmol/g/h, respectively. In stability test, the hydrogen production rate of the g-C 3 N 4 /CdS/NiS in seawater and pure water is similar. This suggests that seawater can replace pure water as a source of hydrogen. While H 2 is generated, the lactate obtained by polylactic acid (PLA) hydrolysis is oxidized to form small organic compounds such as formate, acetate and pyruvate. Our study shows that g-C 3 N 4 /CdS/NiS can not only use seawater as a hydrogen source to produce H 2 , but also photoreformate plastics dissolved in seawater into valuable small organic molecules. This has a positive impact on the production and use of clean energy, as well as on plastic pollution and water scarcity.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 55
·期 10
·4265-4278
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IF 3.442
Hu Miao,Yan Aihua,Cui Qiaopeng,Huang Fei,Li Dengke,Li Fan,Huang Ji,Qiang Yinghuai
In this work, nickel sulfide (NiS)/bismuth oxybromide (BiOBr) hybrids were synthesized by a two-step hydrothermal method. Some advanced tools were employed to characterize the crystal phase, morphological evolution, light absorption and photocatalytic performance. Significantly, NiS/BiOBr hybrids exhibited enhanced photocatalytic activity toward rhodamine B (RhB) degradation under visible light irradiation. Comparatively, NS/BOB-3.0 showed the highest degradation rate, over 2.5 times higher than that of pure BiOBr. Furthermore, the retarded recombination rate of photogenerated carriers contributed to the improved photocatalytic performance. The results indicate that hybrids may be a promising method for enhancing the photocatalytic ability of BiOX-based semiconductor.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Yue Qin,Qingli Xu,Rong Zhao,Qingfa Wang
Graphical Hybrid NiS/Ni(OH) x catalyst containing abundant heterointerfaces and appropriate oxygen vacancies show excellent oxygen evolution reaction (OER) activity and stability. The oxygen vacancies can be easily regenerated to recover the OER performance after the stability test. A mechanism of oxygen vacancies transformation and regeneration based on the Ni-S-5 catalyst is proposed. Developing low-cost and highly efficient electrocatalysts toward oxygen evolution reaction (OER) is of vital significance for electrochemical water splitting. Herein, we fabricate a heterostructure NiS/Ni(OH) x electrocatalyst (Ni-S-n) with regenerative oxygen vacancies via electro-deposition on nickel foam (NF) followed by a facile NaBH 4 reduction. The resulting Ni-S-5 catalyst with appropriate amount of oxygen vacancies (O vs ) exhibits extraordinary activity for alkaline OER with overpotential of 142 mV and 248 mV to reach the current density of 10 mA cm −2 and 100 mA cm −2 , respectively. This catalyst also shows remarkable durability with 40 h. After the stability test, the excellent OER performance is well recovered by regenerating the surface oxygen vacancies (O vs ) significantly with additional NaBH 4 reduction. The Ni-S-5 catalyst still displays good activity even after repeating it three times (180 h). The surface oxygen vacancies act as vital active sites for OER. A mechanism of O vs species transformation and regeneration based on the Ni-S-5 catalyst is proposed, which provides a new direction for exploring ultrastable and efficient OER electrocatalysts with renewable active species.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Wanqing Yu,Fangjing Mo,Jiang Guo,Yuqin Yang,Yushuang Jin,Yingzi Fu
Seeking and constructing superior photoactive materials have the potential to improve the performance of photoelectrochemical (PEC) biosensors. In this work, we proposed a novel mimosa-like ternary inorganic composite with a significantly enhanced light-harvesting ability and photogenerated carrier separation rate. This ternary photoactive material was obtained via electrodeposition of gold nanoparticles (Au) on the surface of transition metal sulfide composite of CdS and NiS (CdS-NiS/Au). The experimental results showed that the high initial photocurrent was acquired on CdS-NiS/Au (68-fold higher than that of individual CdS) with the synergistic effect of p-n heterojunction, Schottky junction, and the eminent optical properties of gold nanoparticles. Meanwhile, using silver nanoclusters prepared by link DNA protection as an effective quencher, integrating the duplex-specific nuclease-assisted rolling circle amplification strategy, a “Signal ON” PEC biosensor was fabricated for the detection of microRNA 21 (miRNA 21). With the release of the quencher, the recovered photocurrent is able to achieve determination of miRNA 21 within the range from 10 aM to 1 pM with a detection limit down to 4.6 aM (3σ). Importantly, this work not only provides a superb idea for designing ternary inorganic heteromaterials with exceptional photoactive ability but also allows the detection of other biomarkers by selecting appropriate recognition units.
研究领域:
生物传感技术
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纳米材料科学
·
分子诊断学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANO
·
2019
·
IF 1.293
Zhiheng Huang,Chunchuan Gu,Jiajun Wen,Langlang Zhu,Mingzhen Zhang,Hongying Liu
In this paper, a new and one-pot electrodeposition method was expanded for the preparation of NiS nanoparticles-based electrochemical biosensor using metal-ion complexes as a precursor. Thioacetamide was used to control the production rate of NiS nanoparticles for the first time. The proposed electrochemical sensor was characterized by energy dispersive X-ray spectroscopy (EDX), field emission scanning electron microscope (FESEM), cyclic voltammograms (CV), and electrochemical impedance spectra (EIS). Experiment parameters were optimized. Under the optimized condition, the prepared NiS-based biosensor exhibited excellent electrocatalytic oxidation of H 2 O 2 and glucose due to their small size. It provided fast and sensitive strategy for detecting H 2 O 2 and glucose in the range of 1–5000 and 1–1000 μ M. The detection limit of 0.257 and 0.3 μ M was obtained for H 2 O 2 and glucose. The mechanisms were also analyzed. The proposed biosensor exhibited excellent anti-interference and repeatability. Furthermore, it was applied in the actual sample analysis, such as human blood serum.
研究领域:
生物传感技术
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材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Zhenjiang Lu,Nana Zheng,Qiaoling Zhao,Jing Xie,Jindou Hu,Yali Cao
Transition metal sulfides (TMSs) are highly promising electrocatalysts for the oxygen evolution reaction (OER), but insufficient stability limits their application. To this end, we prepared cobalt-based nitrogen-doped carbon nanotube-supported binary sulfide heterojunction catalysts (CoS 2 /NiS@Co@NCNTs) via a two-step high-temperature pyrolysis-sulfurization method. The energy-band structure of CoS 2 matches that of NiS, a feature that enables the formation of a high-quality interface, this accelerates electron transfer and charge redistribution, and enhances reaction kinetics. In contrast, the cobalt-based NCNTs enhance electrical conductivity and improve the reaction stability of CoS 2 and NiS. As expected, the CoS 2 /NiS@Co@NCNTs had high OER catalytic activity with an overpotential of 256 mV at a current density of 10 mA cm −2 , which was superior to that of commercial RuO 2 (η 10 = 293 mV). In addition, the prepared catalysts showed good stability and no significant degradation after 50 h of i-t test at a current density of 10 mA cm −2 . This study provides a new strategy for achieving efficient OER in overall water splitting.
研究领域:
电化学
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材料科学
·
催化
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Ziwen Wang,Qiuyu Wang,Zhe Yin,Man Zhang,Guoping Yu,Qingcheng Luo,Huanyu Chen,Binglin Tang,Kangzheng Li,Zhichao Zhang,Bo Lv
White plastic waste in the ocean not only destroys the Marine ecology, but also poses a potential threat to human health. In this study, we proposed a simple synthesis method by introducing suitable electron-bridge to design and synthesize CeO 2 -based II-type heterostructure catalysts with dual functions for efficient hydrogen production from seawater and photocatalytic conversion of plastics. The CeO 2 /CdS/NiS showed remarkable photocatalytic performance in the presence of plastic as the sacrificant. The hydrogen production rate of CeO 2 /CdS/NiS at the fifth hour was 32.40 mmol/g/h, which was 29 times that of bare CdS and 463 times that of bare CeO 2 . At the same time, the use of natural seawater to replace deionized water in this study was economically beneficial. Furthermore, we verified the feasibility of the selective oxidation of plastics into pyruvate, acetate and formate using CeO 2 /CdS/NiS photocatalyst and put forward a rational reaction mechanism. Overall, the study provids new possibilities for solving the problem of Marine plastic pollution and promoting the development of clean energy.
研究领域:
环境科学
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能源科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Feihu Li,Ziqiang Zhang,Junjie Jing,Qing Xue,Keyu Chen,Yeguang Zhang,Huibing Fu,Zili Zhan,Peng Wang
Development of highly sensitive ethanol gas sensors is critical for numerous applications including industrial gas leak monitoring, environmental air quality assessment, food fermentation process control, and automotive drunk driving prevention. Here, NiS hierarchical nano-microspheres (NiS-HNMs) were successfully synthesized via a facile hydrothermal method. The gas sensing performance toward ethanol was comprehensively evaluated by testing key parameters. The results demonstrate that the NiS-HNMs exhibit remarkable efficiency in ethanol detection. The gas sensor fabricated with NiS-HNMs achieves a response value of 4.33 toward 10 ppm ethanol at 130°C. Meanwhile, the gas sensor demonstrates excellent selectivity, short-term repeatability, and long-term stability for ethanol detection, along with an excellent linear relationship over the concentration range of 1–10 ppm. The superior gas sensing performance of the NiS-HNMs is attributed to their hierarchical nano-microsphere structure, with a large specific surface area (174.09 m 2 /g), providing abundant active sites. Additionally, a large amount of surface-adsorbed oxygen was detected on the surface of NiS-HNMs, which indicates that more adsorbed oxygen molecules participate in ethanol gas sensing reactions, thus contributing to their excellent gas sensing performance. In summary, this study successfully synthesized hierarchically structured NiS nano-microspheres, which provide a novel perspective for constructing high-performance ethanol sensors and show significant application potential in high-sensitivity detection fields.
研究领域:
材料科学
·
化学传感器
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纳米技术
·
气体传感应用
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 6
·3300-3310
·
IF 11.301
Shundong Guan,Xiuli Fu,Bo Zhang,Ming Lei,Zhijian Peng
As a new type of electrochemical energy storage system, aqueous battery–supercapacitor hybrid (BSH) devices are attracting increasing interest due to their high energy and power density, high security, and low cost. Herein, hierarchical NiS/SnS2 heterogeneous nanowall arrays on carbon cloth (NiS/SnS2@CC) are synthesized via a simple cation-exchange method using SnS2@CC as the precursor. Benefiting from the maximum use ratio of the active materials and the synergistic effects between the SnS2 core and the NiS shell, NiS/SnS2@CC delivered an ultrahigh specific capacity of 430.38 mA h g−1 at a current density of 2.5 mA cm−2 (1.16 A g−1) with excellent rate capability of 185.08 mA h g−1 at a very high current density of 40 mA cm−2 (23.26 A g−1) and satisfactory cycling stability (82.6% of capacity retention after 1000 cycles). Moreover, all-solid-state BSH devices could be assembled using NiS/SnS2@CC as the battery-type cathode and Fe2O3/rGO@CC as the supercapacitor-type anode. With a maximum working voltage of 1.6 V, such a device exhibited a very high energy density of 104.23 W h kg−1 at a power density of 301 W kg−1 with excellent cycling stability and flexibility. This rational design and preparation strategy may provide new insight into the development of high-performance electrode materials for electrochemical devices.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2019
·Vol. 4
·期 4
·1654-1664
·
IF 4.912
Caiyun Wu,Yunmei Du,Yunlei Fu,Di Feng,Hui Li,Zhenyu Xiao,Yanru Liu,Yu Yang,Lei Wang
In this study, a composite of Mo, Co co-doped NiS bulks grown on an Ni foam (Mo,Co-NiS/NF) was synthesized as a bi-functional electrocatalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) using a simple method. The existence of ZIF-67 and Mo ensure the even distribution of Co and Mo elements and the formation of N doped carbon layer in Mo, Co-NiS/NF. Mo, Co co-doping and NF support greatly improved the electrocatalytic performance of NiS bulks, because metal element doping could improve the intrinsic activity and electrical conductivity. Moreover, the Ni foam could act as a substrate to avoid aggregation and provide nickel source to form the bimetallic sulfide. The product Mo,Co-NiS/NF-400 showed outstanding electrochemical properties, with ultralow overpotential (92 mV vs. RHE) for HER and ultralow overpotential (117.2 mV vs. RHE) for OER to achieve 10 mA cm−2, as well as the ultralow cell voltage (1.36 V) to achieve 20 mA cm−2 for overall water splitting. This study provides an available method to promote the electrocatalytic activity of the traditional monometallic sulfides for overall water splitting.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 47
·20071-20084
·
IF 2.7
Mengbin Li,Zengpeng Guo,Lizhong He
In this work, a novel 3D NiS/Ni3S4 architecture was successfully prepared on carbon cloth (CC) through a typical hydrothermal method followed by an annealing process, which led to multiscale and multicomponent 3D structures, resulting in three-dimensional rod-like stacking with a large surface area, abundant ion-mobility pathways and high electrical conductivity. In a three-electrode setup, the electrode displayed an excellent capacitance of 1191.93 F g−1 at 1 A g−1 and retained good rate performance and long cycling stability with 78.25% retention after 10 000 cycles. An all-solid-state asymmetric device (NiS/Ni3S4-2//AC) was fabricated with the optimal NiS/Ni3S4-2 electrode and AC electrode, which could deliver a high energy density of 43.43 W h kg−1 at a power density of 900 W kg−1 and a maximum power density of 9086.53 W kg−1 with an admirable operating voltage window of 1.8 V and a satisfactory cycling performance of 78.05% after continuous 10 000 cycles, indicating its potential for real-world application.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）