Catalysis Science & Technology
·
2023
·Vol. 13
·期 15
·4525-4533
·
IF 5
Qiuyu Zhang,Yajie Chen,Xinyan Yu,Yuejia Yin,Yaxin Ru,Guohui Tian
Fabricating photocatalysts with customizable structure and composition using different metal–organic framework (MOF) building blocks has intriguing implications in chemistry and material science, but it is challenging to do so. Here, a two-step synthetic strategy was designed to prepare MIL-125(Ti)@TiO2 hollow nanodiscs decorated with Co3S4 nanoparticles for CO2 photoreduction. The Co-based zeolite imidazolium ester backbone (ZIF-67) nanolayer was first loaded on the prepared MIL-125(Ti) nanodiscs to form core@shell MIL-125(Ti)@ZIF-67 nanodiscs. The following sulfidation process under solvothermal condition led to the production of MIL-125(Ti)@TiO2 hollow nanodiscs decorated with Co3S4 nanoparticles (MIL-125(Ti)@TiO2\Co3S4). This ternary hybrid catalyst with hollow nanodisc structure possessed a significantly enhanced charge separation efficiency and visible light absorption, along with offering a huge number of active sites. Considering the above advantages, the CO2 photoreduction activity of the optimized MIL-125(Ti)@TiO2\Co3S4 catalyst was significantly increased when compared to single-component catalysts (MIL-125(Ti), TiO2, and Co3S4) and binary hybrid catalysts (MIL-125(Ti)@TiO2 and TiO2\Co3S4) under simulated sunlight irradiation. CO is the main product with a productivity of 587.50 μmol g−1 h−1, which is almost seven times higher than that of pure MIL-125(Ti). The potential photocatalytic mechanism of the hybrid photocatalyst has also been demonstrated. This study presents a simple and effective technique for fabricating MOF-based hybrid catalysts for photocatalytic applications.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Hui Su,Shaojia Song,Songsong Li,Yangqin Gao,Lei Ge,Weiyu Song,Tianyi Ma,Jian Liu
Rational design of low-cost and efficient electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is imperative for renewable energy conversion. Herein, for the first time, a facile strategy is developed to synthesize M (M = Fe, Cu, Zn, Mo) doped bimetallic sulfide heterostructure Ni 3 S 2 /Co 3 S 4 electrocatalysts. The as-prepared bifunctional Cu-Ni 3 S 2 /Co 3 S 4 electrode exhibits excellent electrocatalytic activity for HER and OER in 1 M KOH electrolyte, and it requires only an overpotential of 79 mV (150 mV) to deliver 10 mA cm −2 (20 mA cm -2 ) current density for HER process. Moreover, it shows a considerable low cell voltage of 1.49 V at the current density of 10 mA cm -2 in a two-electrode configuration which is far surpassing most of the reported bifunctional metal sulfides. Meanwhile, besides increasing the specific surface area of the electrocatalyst by optimizing the microstructure, the introduction of Cu cation could also stimulate the formation of high-valent Ni/Co sites, which can be verified by XPS technique. Density function theory calculations demonstrate that the Cu-doping boosts the formation of high valent Co sites and enhances the charge transfer performance of Ni and Co species, thus promotes intrinsic catalytic activity through modulating the d-band center of Co and reducing the adsorption energy of H and O-containing intermediates (H*, OH*, OOH*) on the surface of the catalyst. This work suggests the importance of exploitation of transition metal ion-doping for promoting the electrocatalytic activity of bimetallic sulfides.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Songrong Li,Xi Chen,Mingjie Li,Cheng Xue,Yuhan Long,Wenhao Liu,Zhenhua Cao,Xiaoqin Tong,Wenli Huang,Dongfang Liu
In this study, hollow Co 3 S 4 polyhedron decorated with interlayer-expanded MoS 2 nanosheets (Co 3 S 4 -MoS 2 ) was devised and applied to absorb tetracycline (TC) from aqueous solution. The adsorption performances and mechanisms were systematically explored. The experimental results indicated that the adsorption kinetics well-fitted the pseudo-second-order kinetics model and the adsorption isotherms followed the Langmuir model. In terms of Langmuir model, the maximum adsorption capacity of Co 3 S 4 -MoS 2 was achieved with a record-high value of 1667.14 mg/g at 308 K, which was much higher than that of other reported adsorbents. The excellent adsorption performance of the adsorbent toward TC was presented under a wide pH range (3.0–8.0) and was enhanced by the addition of salinity. The high adsorption capacity of Co 3 S 4 -MoS 2 depended on the combined effects of multi-affinities including π-π interaction, hydrophobic effect, surface complexation and hydrogen bonding. These results suggested that Co 3 S 4 -MoS 2 was a high-efficiency adsorbent for treating wastewater that contains TC and provided new insights into the design of other hollow metal sulfides nanomaterials to treat antibiotic-containing wastewater.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 16
·2302
·
IF 5.3
Zhen Pei,Tengteng Qin,Rui Tian,Yangxin Ou,Xingzhong Guo
Transition metal sulphide electrocatalytic materials possess the bright overall water-splitting performance of practical electrocatalytic technologies. In this study, an amethyst-like MoS2@Ni9S8/Co3S4rod electrocatalyst was constructed via a one-step hydrothermal method with in-situ-grown ZIF-67 nanoparticles on nickel foam (NF) as a precursor. The rational design and synthesis of MoS2@Ni9S8/Co3S4endow the catalyst with neat nanorods morphology and high conductivity. The MoS2@Ni9S8/Co3S4/NF with the amethyst-like rod structure exposes abundant active sites and displays fast electron-transfer capability. The resultant MoS2@Ni9S8/Co3S4/NF exhibits outstanding hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) electrocatalytic activities, with low overpotentials of 81.24 mV (HER) at 10 mA cm−2and 159.67 mV (OER) at 50 mA cm−2in 1.0 M KOH solution. The full-cell voltage of overall water splitting only achieves 1.45 V at 10 mA cm−2. The successful preparation of the amethyst-like MoS2@Ni9S8/Co3S4rod electrocatalyst provides a reliable reference for obtaining efficient electrocatalysts for overall water splitting.
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
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 9
·1943-1955
·
IF 7.779
Yang Yang,Xiuzhen Zheng,Jiafang Liu,Zhulin Qi,Tianyue Su,Chun Cai,Xianliang Fu,Sugang Meng,Shifu Chen
To achieve high photocatalytic efficiency of H2 evolution, promoting the utilization rate of photogenerated charge carriers by photocatalytic synergistic reaction is an efficient strategy. In this work, Co3S4/Zn0.5Cd0.5S nanocomposites with Co3S4 derived from ZIF-67 were successfully prepared through a simple hydrothermal method. Under visible light irradiation, Co3S4/Zn0.5Cd0.5S exhibited high photocatalytic activities in a H2 production system coupled with selective oxidation of benzyl alcohol. Moreover, 3% Co3S4/Zn0.5Cd0.5S showed the optimal activity (7.67 mmol g−1 h−1), greatly improved compared to that of Zn0.5Cd0.5S (1.62 mmol g−1 h−1). The reasons for the improved photocatalytic performance were seriously investigated by a variety of measurements and can be attributed to the enhanced visible light absorption and more efficient electron–hole pair separation. This study provides a good strategy to construct photocatalysts with metal–organic frameworks (MOFs) and efficient charge separation for highly efficient H2 production.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Minghao Dou,Wensong Wang,Xiang Liu,Mengjie Yao,Kai Ding,Weiwei Lin,Xiuwen Cao,Chaoyue Li,Shenjie Li,Yanyan Chen
Compared with the oxygen precipitation reaction (OER), the theoretical application of urea oxidation reaction (UOR) with a smaller potential is more conducive to achieve H2 release, showing a strong application prospect in the field of wastewater treatment. However, the efficiency of the traditional nickel foam-based catalyst is still subject to the following two factors: the high oxidation potential of Ni3+ and the uncertainty of the oxidation and reduction active sites. Here, with the advantage of two-dimensional sheet porous high surface area, a Ni(OH)2 nanosheet was prepared by depositing ZIF-67 to inhibit the formation of Ni3+ and maximize the space utilization. Then, the NiS/Co3S4/Ni3S2 nano heterostructure was constructed to improve the interface electronic structure and optimize the adsorption energy of the intermediates via in situ vulcanization. The NiS shell on the surface of the catalyst provides sufficient reaction sites for the catalytically active substance NiOOH generated during the UOR at a lower oxidation potential. At a current density of 50/100 mA cm–2, the overpotential is only 1.330/1.340 V while maintaining the catalytic durability for 20 h. At the same time, the NiS/Co3S4/Ni3S2/NF nano heterostructure material shows good urea degradation performance and stability, which provides the possibility of degradation and treatment of industrial, agricultural, and domestic wastewater containing urea.
研究领域:
材料科学
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环境科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Lizhong He,Zengpeng Guo,Najeeb ur Rehman Lashari,Gexi Wang,Mengbin Li
To cater to the mushrooming advanced energy storage devices need, designing and preparing novel electrode materials with excellent electrochemical properties (including high capacitance and prominent cycling stability) are urgent but challenging. Here, we successfully synthesized 3D hierarchical NiCo 2 O 4 @Co 3 S 4 @MnS@PPy (NC@CS@MS@PPy) core-sheath nanowire arrays grown on highly conductive carbon cloth using a multistage process. Owing to a lot of synergy between the multiple components in the as-obtained composite, the prepared electrode material indicates an excellent specific capacitance of 2.67 F cm −2 at 1 mA cm −2 or 2557.58 F g −1 at 1 A g −1 and high cycling stability (83.64 % capacitance retention after 20,000 cycles even at a high current density of 20 mA cm −2 ). When coupled with the activated carbon (AC, as a negative electrode), the assembled all-solid-state NC@CS@MS@PPy//AC asymmetric supercapacitor (ASC) device showed outstanding electrochemical properties with a high area specific capacitance 684.38 mF cm −2 at 3 mA cm −2 and better long-term cycling stability (96.76 % retention of the initial capacitance after 20,000 cycles). More importantly, by taking advantaging of the multiple compositional merits and structural features of the positive electrode , the device delivered the highest energy density of 81.1 Wh kg −1 at 800 W kg −1 and retained 26.2 Wh kg −1 at the highest power density of 16 KW kg −1 . Furthermore, two ASCs connected in series powered 20 red light-emitting diodes (LEDs) for >10 min. This work manifests that the prepared hierarchical NC@CS@MS@PPy core-sheath nanowire arrays have impressive potential as high-performance electrodes for supercapacitor.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2015
·
IF 2.711
Mingyang Xu,Helin Niu,Jinjing Huang,Jiming Song,Changjie Mao,Shengyi Zhang,Chengfeng Zhu,Changle Chen
Visible light photocatalysts have stimulated great research efforts. In this contribution, graphene-like Co 3 S 4 nanosheet/Ag 2 S nanocomposite was prepared using a simple method, and characterized by transmission electron microscopy, X-ray diffraction, and UV–Vis DRS, etc. The photocatalytic properties of the nanocomposite was evaluated by the photocatalytic degradation of Methylene blue (MB) and Methyl orange (MO) under visible light irradiation. The nanocomposite photocatalyst displays excellent stability and photocatalytic activity compared with pure Co 3 S 4 nanosheet or Ag 2 S nanoparticles. The superior photocatalytic properties were attributed to its unique structures, which could promote efficiently electron/hole separation and transportation.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
Di Huang,Lingxi Yang,Xing lin Li,Lina Zou,Baoxian Ye
A novel electrochemical sensor was designed and constructed for high-sensitive detection of Taxifolin based on Co 3 S 4 @MoS 2 loaded on reduced graphene oxide (RGO-Co 3 S 4 @MoS 2 ) as modified materials. It’s the first time for Co 3 S 4 @MoS 2 was exploited to constructed electrochemical sensor. Owing to the Co 3 S 4 @MoS 2 providing a huge surface area to enrich more Taxifolin and the excellent electric conductivity of RGO, Taxifolin was detected sensitively with a linear range from 5.0 × 10 −9 to 1.0 × 10 −6 mol L − 1 and limit of detection down to 1.67 × 10 −9 mol L − 1 (S/N = 3). In addition, the sensor also demonstrated strong anti-interference properties in the presence of some metal ions and organic compounds. The proposed method was successfully applied for determination of Taxifolin in traditional Chinese medicine in fructus polygoni orientalis with satisfactory results.
研究领域:
分析化学
·
材料科学
·
药学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Ziyi Jiang,Guoyu Wei,Changhong Guo,Huiming Lin
The growing issue of environmental pollution, particularly water contamination by the spread of bacteria and organic dyes, eagerly demands to be resolved. Given its advantages of being efficient, convenient, and eco-friendly, photocatalysis stands out as a promising strategy for water purification. To harness solar energy effectively, Co 3 S 4 nanodots with a narrow band gap were integrated onto the surface of NiTiO 3 nanoflowers to construct heterostructure (NC-x). Detailed characterization revealed that the charge transfer mechanism belonged to a novel Z-scheme, which not only facilitated efficient electron-hole separation into different components but also maintained a high redox potential, leading to the generation of plenty of reactive oxygen species (ROS: . O 2 - and . OH). These ROS were instrumental in damaging bacteria and the degradation of organic dyes. Furthermore, the NC-x nanocomposite exhibited excellent photothermal property and the local hyperthermia further enhanced the photocatalytic reaction. Optimized for composition, NC-2 shows the effective inactivation to E. coli, achieving a lethality rate of 99.50±0.22 % under simulated sunlight irradiation. It has also been successfully applied to treat complex lake water samples, demonstrating significant antibacterial (99.82±1.28 %) and methylene blue (90.60±1.78 %) degradation efficiency, simultaneously. With the novel biocompatibility and decontamination capabilities, NC-2 holds substantial potential for water purification applications.
研究领域:
环境科学
·
材料科学
·
光催化技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Tian Pang,Min Luo,Xin Liu,Yaqin Zhang,Tian Zhao,Pu Shi,Fuzhi Li
Recently, transition metal sulfides (TMSs) have attracted great attention because of their abundant valence states and remarkable electrochemical activity in the field of supercapacitors. However, it is still a great challenge to prepare TMSs with high specific capacitance, good rate performance, and remarkable cycle stability. Herein, the microflower-like CuS/Co 3 S 4 composite was achieved through an efficient two-step procedure. Firstly, the microflower-like CuCo precursors consisting of ultrathin nanoflakes were prepared by a simple solvothermal reaction. Subsquently, the CuS/Co 3 S 4 composites with microflower-like microstructure, rich in nanoflakes, almost the same with the precursors, were obtained using Na 2 S·9 H 2 O as the sulfur source through a simple hydrothermal treatment. Ascribing to the distinctive microflower structure and bimetallic sulfides synergy, the CuS/Co 3 S 4 electrode shows a notable specific capacitance (1483 F g −1 at 1 A g −1 ) and an impressive rate performance (1038.1 F g −1 at 20 A g −1 ). Furthermore, the assembled hybrid supercapacitor CuS/Co 3 S 4 //PC displays a considerable energy density of 55.02 Wh kg −1 at the power density of 372.5 W kg −1 , and a distinguished cycle performance. This study provides valuable insights into the development of novel bimetallic sulfides for potential application in supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 107
·期 2
·719-735
·
IF 3.9
Mojtaba Rostami,Milad Jourshabani,Fatemeh Davar,Ghodsi Mohammadi Ziarani,Alireza Badiei
In this research, the ultrasound (US) technique was applied as a facile synthesis method for preparing the black TiO 2 -g-C 3 N 4 type II heterojunction, coupled with a Schottky junction MOF (ZIF-67)-derived x wt% Co 3 S 4 /nitrogen-doped carbon (NC) ( x = 3, 10, and 15) with hollow nanobox (HNB) morphology, as a smart nanoheteroarchitecture (NHA) photocatalyst to enhance visible-light photocatalytic activity. Additionally, the solvothermal synthesis route was employed to fabricate the MOF (ZIF-67)-derived Co 3 S 4 /NC cubic hollow nanoboxes (CHNBs) before the pyrolysis process. The black TiO 2 -g-C 3 N 4 wt% Co 3 S 4 /NC (TiCN-15% CoS/NC) NHAs exhibited high photocatalytic activity in degrading methylene blue. The synergetic effect of all components in black TiCN- x wt% CoS/NC NHAs resulted in efficient electron-hole pair separation and charge mobility on Co 3 S 4 /NC HNB and g-C 3 N 4 surfaces, which led to a highly effective recombination rate of charge carriers and an excellent improvement in photocatalytic performance.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 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）