CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Wenhua Li,Shule Zhang,Qianqiao Chen,Qin Zhong
Hierarchical nanostructures with tailored components and architectures have attracted widespread interest in improving the performance of electrocatalysts, but the construction of exquisite structures with remarkable electrocatalytic performance is still challenging. Herein, the hierarchical CoS 2 /NC-RGO composite is designed via a delicate yet facile three-step process, including in-situ growth of ZIF-67, carbonization, and vulcanization. The key preparation step is that GO sheets and the O-20 surfactant are introduced simultaneously into the process of ZIF-67 preparation to obtain the precursor of the hierarchical structure. The composite employed as the counter electrode in the polysulfide electrolyte exhibits a low charge transfer resistance of 1.07 Ω, and the CdS/CdSe co-sensitized quantum dot sensitized solar cell obtains a PCE up to 5.14%. The successive cyclic voltammetry test results prove that it exhibits ultrastrong durability in the polysulfide electrolyte. The excellent performance is mainly due to the well-design of the RGO conductive skeleton and the CS/NC nanoparticles that are uniformly and tightly anchored on the RGO surface. This work provides a new perspective for the preparation of novel and high-efficient hierarchical carbonaceous composite CEs for QDSSCs.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
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IF 10.383
Jie Wu,Yuanyuan Zhang,Bin Zhang,Siwei Li,Ping Xu
Development of low-cost, efficient, and durable electrocatalysts for the oxygen evolution reaction (OER) is crucial for multiple energy conversions and storage devices. Herein, Zn-doped CoS2 nanoarrays supported on carbon cloth, Co(Zn)S2/CC, are fabricated through a facile sulfidization of CoZn metal–organic frameworks. This precatalyst, Co(Zn)S2/CC, with a well-defined nanoarray structure affords excellent OER catalytic activity (η = 248 mV at 10 mA/cm2) and long-term durability in 1 M KOH. X-ray photoelectron and in situ Raman spectroscopic studies indicate that Co(Zn)S2 undergoes surface reconstruction with the generation of Co(Zn)OOH adsorbed with SO42– at the surface during the OER process. The Zn dopant is calculated to impact on the electronic structure of Co species and further the adsorption of intermediates. This work not only provides a novel method for the synthesis of bimetallic sulfides but also gives insights into the doping effect on the OER performance of transition metal sulfides.
研究领域:
电化学
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材料科学
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能量转换与存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Xiao Feng,Hao Chen,Siyuan Guo,Xiaoyu Wang,Tengfeng Xie,Dejun Wang,Yanhong Lin
Efficient photocatalysts are key to achieving efficient photoactivation of AOPs based on PMS. In this work, a sulfur-rich vacancy magnetically separable Fe 0 /CoS 2 -S v photocatalyst with high surface adsorption capacity and rapid PMS activation capacity was designed for the efficient degradation of typical antibiotics. A tetracycline removal rate of 92.2 % and a high TOC mineralization rate were achieved within 4 min in the PMS/Vis system. The excellent catalytic performance was attributed to the synergistic effect of Fe, Co, and S on PMS activation and the generation of sulfur-oxygen vacancies by the composites. These vacancies greatly enhanced the catalytic performance of the PMS system, where the generated singlet oxygen ( 1 O 2 ) was identified as the main active substance in the degradation process. In addition, the SO 4 2- based photocatalytic-assisted advanced oxidation processes (SR-AOPs) for the degradation of organic pollutants were thoroughly investigated. XPS comparisons before and after the catalyst reaction revealed that the reducing nano-Fe 0 and metastable S 2 2- promoted the cycling between Co 3+ and Co 2+ , thus accelerating the rapid activation of PMS. This work provides a new perspective for the further development of efficient and rapid PMS photo-activators for environmental remediation in water bodies.
研究领域:
环境科学
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化学工程
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材料科学
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水处理
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2021
·Vol. 32
·期 11
·15251-15264
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IF 2.478
Xu Ying-Ge,Liu Jian,Kong Ling-Bin
Sodium-ion hybrid capacitors (SICs) as promising energy conversion and storage devices have exhibited excellent specific energy, high specific power, and good cycling life. Nevertheless, anode materials for SICs suffer from terrible volume expansion and sluggish reaction kinetics owing to the larger radius of sodium-ion. To find suitable anode materials, we design and prepare reduced graphene oxide-supported CoS 2 nanoparticles (CoS 2 /rGO) with high electrochemical performance through a facile hydrothermal method. When tested as anode materials, the specific capacity of CoS 2 /rGO delivers 529.3 and 1168.6 mA h g −1 in the process of the 1st charge and discharge, respectively. Moreover, the specific capacity retention is up to 214.8 mA h g −1 at 100 mA g −1 over 100 cycles. In order to explore the practical application of CoS 2 /rGO, SICs are assembled by biomass-derived porous carbon cathodes and CoS 2 /rGO anodes, which displays remarkable specific energy of 112.6, 103.75, 91.29, 70.34, 47.45 W h kg −1 under specific power 225, 449.82, 899.86, 1350, 2689.3 W kg −1 , respectively, benefiting from the high pseudocapacitive performance of CoS 2 /rGO anodes and outstanding specific capacity of biomass-derived porous carbon cathodes.
研究领域:
材料科学
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能源存储
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纳米技术
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
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2025
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IF 9.8
Hao Zhang,Rui Zeng,Shou-Cong Dong,Shu-Ting Zhang,Pei-Pei Chen,Dong-Lin Zhao
To effectively address the critical challenges of pronounced volumetric expansion and intrinsic low electrical conductivity in bimetallic sulfide anodes for sodium-ion batteries (SIBs). In this study, a cobalt-based MOF (ZIF-67) was employed as the precursor material to synthesize heterostructure CoS 2 /NiS 2 composites via a co-precipitation method and hydrothermal vulcanization process. This heterostructure design not only enhances ionic conductivity but also endows the material with exceptional cycling stability, and the well-defined hollow structure provides a high specific surface area with abundant active sites for efficient sodium storage. As a SIBs anode, the composite delivered an initial discharge capacity of 936.8 mAh g −1 at 0.1 A g −1 . After 100 cycles, it retained 704.1 mAh g −1 with 99 % Coulombic efficiency, highlighting exceptional capacity retention. Notably, at 5.0 A g −1 , the material sustained 386.6 mAh g −1 after 250 cycles, further confirming its superior sodium storage capability. This work offers a promising design strategy for advanced SIBs anodes by leveraging heterostructure engineering to simultaneously enhance stability and kinetic performance.
研究领域:
材料科学
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储能
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电化学
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纳米材料
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电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Chenghu Yuan,Cui Tang,Xuejia Zhan,Menglin Zhou,Lei Zhang,Wen-Tong Chen,Abdukader Abdukayum,Guangzhi Hu
Paraquat (PQ) is a widely used and harmful herbicide that must be detected in the environment. This study reports a novel composite (CoS 2 -GCN) prepared by assembling cobalt disulfide (CoS 2 ) derived from metal-organic frameworks (MOFs) on graphitic carbon nitride (GCN). An electrochemical sensor (CoS 2 -GCN/ glassy carbon electrode (GCE)) was successfully prepared by modifying CoS 2 -GCN onto a GCE to sensitively detect PQ. Different concentrations of PQ were detected using square-wave voltammetry, and the CoS 2 -GCN/GCE electrochemical sensor showed remarkable response signals for PQ in the range of 20 – 1000 nM and 1 – 13 μM, with a detection limit of 4.13 nM (S/N = 3). The CoS 2 -GCN/GCE electrochemical sensor exhibited high stability, reproducibility, and immunity to interference, which were attributed to the synergistic effects of CoS 2 and GCN. In addition, the CoS 2 -GCN/GCE electrochemical sensor showed high applicability for the analysis of fruit samples. Therefore, the proposed sensor has potential applications in PQ detection.
研究领域:
环境科学
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分析化学
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材料科学
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农业化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
·
IF 19.503
Wanqing Li,Lei Wu,Xiaochao Wu,Chuan Shi,Yongliang Li,Lei Zhang,Hongwei Mi,Qianling Zhang,Chuanxin He,Xiangzhong Ren
The precise design and controllable manufacture of electrocatalysts for efficient oxygen reactions (OER and ORR) based on the abundant elements of the earth are urgently required but challenging task. In this study, a CoS 2 /Cu 2 S heterostructured composite (CoS 2 /Cu 2 S-NF) supported by the porous carbon nanofibers is synthesized as a high-efficiency oxygen reaction electrocatalyst. As indicated from in-situ characterization methods (infrared, Raman and XRD) integrated with the density functional theory results, the heterostructures exhibited by CoS 2 and Cu 2 S could be regulated. The results show that the electron transfer/interaction between CoS 2 and Cu 2 S in the heterojunction were regulated, as well as the electronic structures of Co and Cu sites. As impacted by the structural engineering and the electronic modulation, the activity was enhanced, and the performance of electrocatalytic oxygen reactions was improved, which exhibited the lowest potential difference for (ΔE = 0.73 V) compared with commercial electrocatalysts. The liquid ZAB in accordance with on CoS 2 /Cu 2 S-NF exhibited a stable charge and discharge capacity up to 590 h and a great power density reaching 260.60 mW cm −2 . Moreover, the flexible solid-state ZAB based on CoS 2 /Cu 2 S-NF exhibited a great competitive power density (92.06 mW cm −2 ), robust flexibility and an obvious integration. As compared with single metal sulfide-NF, the Density functional theory calculations (DFT) highlight the adsorption on CoS 2 /Cu 2 S-NF side surface in the heterojunction, which more specifically demonstrates the synergistic effect in the junction. This work presents a direction for designing heterostructured junctions as electrocatalyst and moreover its great application potential in rechargeable metal-solid batteries.
研究领域:
电化学
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材料科学
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催化
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Zhimo Fang,Yuan Liang,Zepeng Zeng,Haotian Bai,Zhou Zhou,Lin Zhang,Bin Hu,Shiguan Yang,Jihong Li,Qiang Lu
Herein, we synthesized well-dispersed N and Fe-doped CoS 2 (FNCS) with stable sulfur vacancies (S V ) for Fenton-like reaction. The characterization, experimental, and calculation results jointly unveiled the synergistic modification of heteroatoms and defects within FNCS constructed unique Co−N−Fe···S V sites, enabling synchronous activation of peroxymonosulfate (PMS) and dissolved oxygen (DO). Optimized S 3p-Co 3d orbital hybridization facilitated efficient electron cycling, generating both SO 4 •− radicals and singlet oxygen ( 1 O 2 ) at Co−N−Fe···S V sites. Consequently, the FNCS/PMS system, operating via a radical-nonradical synergistic mechanism, achieved an ultra-high pollutant degradation rate constant of 2.71 min⁻¹ , 3.77 times higher than radical-dominated CoS 2 /PMS, while retaining over 90 % of its initial activity after 10 h of operation with strong interference resistance. This work provides a clear perspective on regulating the electronic structure of active sites to synergistically activate multiple oxidants for enhanced Fenton-like catalysis.
研究领域:
环境科学
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催化
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材料科学
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化学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2015
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IF 2.587
Xiaoqian Chen,Qingxiang Wang,Liheng Wang,Hongxu Guo,Yizhen Yang,Feiming Li,Feng Gao
Rugby-ball-shaped CoS2 (rCoS2) submicroparticles have been synthesized via a simple hydrothermal reaction. The rCoS2 submicroparticles were then casted on a glassy carbon electrode and served as a highly conductive and large surface area platform for the electrosynthesis of poly(2-thiophenesulfonyl chloride) (pTSC), using 2-thiophenesulfonyl chloride as the monomer. The stepwise modification process was characterized by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and different electrochemical technologies. The stable pTSC layer was utilized as a functional interface to immobilize amino-modified probe DNA via a facile sulfonyl–amino condensation reaction, without the assistance of any other cross-linkers. Because of the synergistic effect of rCoS2 and pTSC from the hybrid material, the developed DNA biosensor could detect target DNA over a wide dynamic range, from 1.0 × 10–13 to 1.0 × 10–7 M, with the detection limit down to 1.1 × 10–14 M. Benefiting from the steady electropolymerization film of pTSC and the stable sulfamide bond between the amino-modified DNA and pTSC, the biosensor also showed high stability, reusability, and reproducibility.
研究领域:
生物化学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2021
·
IF 7.086
Liyuan Wu,Pengpeng Guo,Xin Wang,Haiyan Li,Angzhen Li,Kaiyu Chen
Peroxymonosulfate (PMS) activation methods have attractive advantages in advanced oxidation process (AOPs) due to their powerful ability of directly or indirectly generating various reactive oxygen species (ROS). Herein, trace amount of Fe(III) ions were added into the commercial-CoS 2 /PMS system to improve the CoS 2 /PMS decomposition for organics removal. The organics removal efficiency could reach >90% towards methylene blue (MB), diclofenac sodium (DCF), sulfamethoxazole (SMX) and bisphenol A (BPA) in the CoS 2 /Fe(III)/PMS system, with the kinetic apparent rate constant k obs of 0.141, 0.206, 0.247 and 0.091 min −1 , respectively. The synergistic effect between Fe(III) ions and sulfur-vacancies on CoS 2 for PMS degradation were revealed for the first time in cobalt sulfides/PMS system. Quenching experiments and ESR analysis proved that 1 O 2 was the major ROS and was produced mainly by the hydrolysis of SO 5 • – . Besides, the high degradation efficiency was obtained by the contribution of SO 4 • – and • OH. Electron spin–resonance spectroscopy (ESR), cyclic voltammetry (CV) and Raman spectrum data revealed that the addition of Fe(III) ions could optimize the intensity of sulfur vacancies on the CoS 2 surface, which hindered the PMS reduction ability of Co(II), but accelerated the PMS oxidation to form 1 O 2 . The degradation path of MB was analyzed by liquid chromatograph-mass spectrometer (LC-MS). The mechanism studies speculated that the sulfur vacancies of CoS 2 provided the binding sites for Fe(III) ions with Co(II), which facilitated the PMS activation by Co(III).
研究领域:
环境化学
·
催化
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水处理
·
高级氧化过程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Na Yang,Xu Guo,Jing Yu,Hongsen Zhang,Rumin Li,Lele Wang,Qi Liu,Jun Wang
The effective removal of radioactive Sr 2+ and Cs + ions from wastewater is crucial for environmental remediation. Herein, a novel solar-enhanced adsorption platform based on a CoS 2 /MoS 2 /P-MXene/C composite aerogel has been developed that can efficiently remove Sr 2+ and Cs + ions. The constructed CoS 2 /MoS 2 heterointerface provides abundant active regions, while the hierarchical porous structure of the aerogel promotes the rapid transfer of ions and water molecules. In particular, the superior photothermal conversion ability of the CoS 2 /MoS 2 /P-MXene/C makes it capable of capturing solar energy for local heating effect, thereby increasing ion diffusion and accelerating mass transfer. This photothermal feature can greatly enhance the adsorption kinetics through the evaporation of the solution and the ion concentration at adsorption sites. The equilibrium of both Sr 2+ and Cs + was reached within 1 h under one-sun illumination. The measured maximum adsorption capacities were 98.7 and 150.6 mg/g for Sr 2+ and Cs + ions, respectively. In addition, it has excellent selectivity and recyclability as well as high performance in high-salinity solution. The CoS 2 /MoS 2 /P-MXene/C also shows promising potential in the fields of solar-driven seawater desalination and purification of wastewater containing dyes due to the multi-functionality. This work not only engineers an efficient adsorbent for treating nuclear wastewater, but also presents a generic design strategy for multifunctional adsorption system enhanced by external fields for environmental applications.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2019
·
IF 5.256
Chaoyun Ma,Chulei Zhao,Wenjun Li,Yiju Song,Chenglin Hong,Xiuwen Qiao
Effective treatment of cancer depends on early detection of tumor markers. In this paper, an effective template-free method was used to prepare CoS 2 @C three-dimensional hollow sheet nanotubes as the matrix of the immunosensor. The unique three-dimensional hybrid hollow tubular nanostructure provides greater contact area and enhanced detection limit. The CoS 2 @C–NH 2 -HRP nanomaterial was synthesized as a marker and had a high specific surface area, which can effectively improve the electrocatalytic ability of hydrogen peroxide (H 2 O 2 ) reduction while increasing the amount of capture-fixed carcinoembryonic antigen antibody (anti-CEA). In addition, the co-bonded horseradish peroxidase (HRP) can further promote the redox of H 2 O 2 and amplify the electrical signal. Carcinoembryonic antigen (CEA) was quantified by immediate current response (i-t), and the prepared immunosensor had good analytical performance under optimized conditions. The current signal and the concentration of CEA were linear in the range of 0.001–80 ng/mL, and the detection limit was 0.33 pg/mL (S/N = 3). The designed immunosensor has good selectivity , repeatability and stability, and the detection of human serum samples shows good performance. Furthermore, electrochemical immunosensor has broad application prospects in the clinical diagnosis of CEA.
研究领域:
分析化学
·
纳米技术
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生物传感器
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癌症诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）