CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xuejuan Ma,Qi Ou,Jiajia Yuan,Jiaojiao Yang,Shuxia Xu,Xinfeng Zhang
Organophosphorus pesticides (OPs) are the most widely used pesticides, hence it is crucial to effectively prevent and control OPs residues for agricultural product safety and ecological development. In this work, the nanoreactor consisting of Fe-doped carbon dots (Fe-CDs) and metal-organic framework (MOF-808) were developed for selective degradation as well as sensitive detection of paraoxon and parathion. MOF-808 was selected as the host and used to rapidly degrade paraoxon due to its excellent organophosphorus hydrolase activity. Fe-CDs were severed as guest molecules not only for photocatalytic degradation of parathion, but also for sensing to detect OPs. Through host–guest interaction, Fe-CDs/MOF-808 and Fe-CDs@MOF-808 were synthesized for cascade degradation and detection of paraoxon and parathion, respectively. Paraoxon and parathion were detoxified by catalytic hydrolysis and photocatalytic degradation by Fe-CDs/MOF-808 and Fe-CDs@MOF-808, respectively. Meanwhile, the fluorescence of the nanocomposites was quenched by the internal filtering effect with 4-nitrophenol (4-NP), the degradation product of OPs. Fe-CDs/MOF-808 has a wide linear range for detection of paraoxon from 0.001 to 360 μM, with a limit of detection (LOD) as low as 0.3 nM. Fe-CDs@MOF-808 exhibited a linear range of 0.01–100 μM for parathion, with an LOD about 3.3 nM. The reliability of the nanoreactor was verified by testing the recovery rate of OPs spiked water sample. Meanwhile, the nanoreactors were applied for degradation and detection of OPs in pakchoi. The OPs in pakchoi can be fully degraded within 5 min, and the analytical results are consistent with those by standard method (HPLC). Therefore, the proposed nanoreactor provides a feasible alternative for effective degradation and timely detection of OPs during agricultural production.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 33
·80279-80292
·
IF 5.8
Zhang Yaping,Zhang Duoxin,He Yufeng,Wang Zeyuan,Song Pengfei,Wang Rongmin
The environment and human health are in danger due to the long-term enrichment and buildup of organic pesticides, dyes, and harmful microbes in wastewater. The development of functional materials that are efficient for treating wastewater remains a significant problem. Eco-friendly hexagonal spindle-shaped Fe-MOFs (Hs-FeMOFs) were created in this study under the influence of cationic copolymer (PMSt). The mechanism of crystal growth and development of its unique morphology were described after looking into impact factors for the ideal circumstances and being characterized by XRD, TEM, XPS, and other techniques. It revealed that Hs-FeMOFs possess an enormous supply of adsorption active sites, a strong electropositivity, and the nanometer tip. Then, typical organic pollutants, such as herbicides and mixed dyes, as well as biological pollutants bacteria, were chosen to assess its efficacy in wastewater treatment. It was discovered that the pendimethalin could be quickly removed in wastewater and the removal rate reached 100% within 10 min. In separation of mixed dyes, the retention rate of malachite green (MG) reached 92.3% in 5 min and with a minimum inhibitory concentration of 0.8 mg/mL and demonstrated strong activity due to the presence of cationic copolymers. In actual water matrix, Hs-FeMOF could also play excellent adsorption and antibacterial activity. In summary, a novel, environmentally friendly MOF material with good activity was successfully created by cationic copolymer induction. It offers a fresh approach to develop functional materials in wastewater treatment.
✓ 已验证
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Wenliang Wang,Jiale Huang,Yishuai Fu,Weikun Jiang,Yutong Chen,Yujun Ma,Sizhe Han
Improving the yield of target monophenols plays an important role in increasing the economic competitiveness of lignin valorization. In this study, a 3D porous Fe-MoS 2 /CMF catalyst with nanoflower microstructure was successfully fabricated by a simple one-step hydrothermal method. The catalytic depolymerization of the lignin β-O-4 model showed that Fe-doping increased the efficiency of the catalytic conversion reaction and promoted the cleavage of the β-O-4 ether bond, in agreement with theoretical calculations. Reforming of lignin depolymerization vapor revealed that the Fe-MoS 2 /CMF catalysts significantly improved the selectivity of phenol (30.01 wt%) and styrene (16.34 wt%) with the decrease of oligomers . Moreover, finite element simulation showed that the Fe-MoS 2 /CMF catalysts can also enhancing the local thermal effect by creating hot spots on the surface, thereby facilitate the lignin vapor reforming. Consequently, this work provides a promising method for the efficient production of phenol and styrene from lignin using bimetallic nanoarray microwave responsive catalyst.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yongpan Shan,Yajie Ma,Changcai Wu,Xiangliang Ren,Xianpeng Song,Dan Wang,Hongyan Hu,Xiaoyan Ma,Yan Ma
Control release of pesticides based on target plant characteristics is highly desirable for improving the effective utilization rate and reducing non-target organism risks. Here, the controlled release formulations (Cu-CS@IN@MIL-100 (Fe)) were successfully prepared by employing MIL-100 (Fe) as the carrier material, indoxacarb (IN) as the model pesticide, and chitosan (CS) as a coating to chelate copper ions by chemical crosslinking. The prepared Cu-CS@IN@MIL-100 (Fe) had an acceptable loading content (36.25 %). The introduction of CS and copper ions endowed it with sustained release properties under weak acidity conditions like cotton leaves. The laboratory bioassay experiments showed that Cu-CS@IN@MIL-100 (Fe) had practical good insecticidal activity (LC 50 = 4.936 mg/L) in controlling Helicoverpa armigera larvae. For long-term control efficacy experiments, after 14 days of application, the Cu-CS@IN@MIL-100 (Fe) treatment (73 %) mortality of Helicoverpa armigera larvae was significantly higher than the 15 % indoxacarb suspension concentrates (SC) treatment (27 %). Moreover, Cu-CS@IN@MIL-100 (Fe) had no adverse effect on cottonseed germination and the acute toxicity to Chrysopa pallens larvae was significantly lower than IN SC. Therefore, MIL-100 (Fe) could be used as an ecological safety carrier for pesticide delivery to improve IN effective utilization and reduce non-target organism risks.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 15
·1-12
·
IF 2.8
Pan Yusong,Zhu Yuan,Wang Yuanqing,Huang Run,Pan Chengling
Based on the strong capability of transition metal ions for peroxymonosulfate (PMS) activation and highly affinity of MoS 2 towards PMS, thus decorating MoS 2 with transition metal ions would efficiently activate PMS for degradation of organic pollutants. In this work, Co/Fe co-doped MoS 2 catalyst were synthesized by simple chemical method. The prepared Co/Fe co-doped MoS 2 catalyst displayed excellent catalytic activity for organic pollutant degradation. The removal efficiency of RhB and MB is 99% in 6 min and 98% in 15 min under PMS system, respectively. Both the capture experiment and EPR results verified that 1 O 2 played an important role in the organic pollutant degradation process in PMS system. The catalytic mechanism revealed that the synergistic effect between Mo ion and Co/Fe ions is beneficial for boosting the catalytic properties of Co/Fe co-doped MoS 2 catalyst. The cycle experiments confirmed that Co/Fe co-doped MoS 2 possesses excellent chemical stability and re-usability.
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2023
·Vol. 13
·期 6
·948
·
IF 3.9
Rui Hu,Tianye Wang,Yifan Wang,Yuan Zhu,Li Xie,Enhui Xing,Yu Wu,Zhijian Da
A nano-hollow zeolite-encapsulating ultra-fine Fe nanoparticle catalyst denoted as Fe@n-hS-HT was successfully synthesized through a simple water steam treatment of the Fe@n-hS catalyst prepared by the “dissolution–recrystallization” (D-R) method. The Fe@n-hS-HT catalyst had a hierarchical porous structure and a high dispersion of Fe2O3particles with a size of 3.4 nm. Furthermore, the results of several characterization methods, such as XRD, HAADF-STEM, and H2-TPR, further demonstrated the transformation of the skeleton Fe in Fe@n-hS into Fe2O3, which was uniformly dispersed in the Fe@n-hS-HT catalyst. Meanwhile, Fe@n-hS-HT had significantly higher selectivity and yield of C2-C4=than the reference catalysts Fe/S and Fe@n-hS, which provided strong proof for the confined catalysis of the metal@zeolite catalyst.Keywords:hollow zeolite;Fischer–Tropsch synthesis;encapsulation;iron catalyst
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Lu Tian,Dazhong Zhong,Tao Zhao,Yi Liu,Lu Hao,Qiang Fang,Xuelei Lang,Xin Zhao,Genyan Hao,Guang Liu,Jinping Li,Qiang Zhao
Developing highly efficient OER catalysts is essential for producing hydrogen from water electrolysis to compensate for conventional fossil fuel shortages. Here, the oxygen-vacancy-rich heterostructure grown on the Ni foam (NF) (Co 3 O 4 @Fe-B-O/NF) is fabricated. The synergistic effect between Co 3 O 4 and Fe-B-O has been proven effectively modulate the electronic structure and produce highly active interface sites, ultimately leading to enhanced electrocatalytic activity. Co 3 O 4 @Fe-B-O/NF requires an overpotential of 237 mV to drive 20 mA cm −2 in 1 M KOH, and 384 mV to drive 10 mA cm −2 in 0.1 M PBS, superior to most catalysts currently used. Moreover, Co 3 O 4 @Fe-B-O/NF as an oxygen evolution reaction (OER) electrode shows great potential in overall water splitting and CO 2 reduction reaction (CO 2 RR). This work may provide effective ideas for designing efficient oxide catalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Hesheng Yu,Dawei Liu,Katam Srinivas,Fei Ma,Ziheng Zhang,Mengya Wang,Yu Wu,Yue Wang,Xinsheng Li,Yuanfu Chen
It is still challenging but crucial to plumb non-noble metal-based oxygen reduction reaction (ORR) catalysts with comparable or better performance than benchmark Pt/C catalysts. Herein, we proffer an unconventional core-shell-structured iron-based heterostructure electrocatalyst constructed by a Fe/Fe 3 C heterostructure nanoparticle core wrapped by a graphitic shell embedded on a conductive N-doped mesoporous graphite skeleton (Fe/Fe 3 C@NC) via facile pyrolysis of MIL-53(Fe) (MIL = Matérial Institute Lavoisier) and melamine. The Fe/Fe 3 C@NC catalyst delivers more positive half-wave potential ( E 1/2 ) of 0.86 V and a low Tafel slope of 56 mV dec −1 for ORR, outpacing the benchmark Pt/C catalyst, and it also shows remarkable long-term durability and excellent methanol tolerance. The marvelous ORR behaviors can be attributed to its distinctive morphologic structure: the heterostructure can enhance intrinsic ORR activity; the core-shell nanostructure can enhance ORR activities through unique electron transfer between iron species and their conductive carbon shells, which can also act as protective barriers to ensure long-term stability; the high-content pyridinic-N doping can be used as additional active centers; and the abundant mesopores facilitate the diffusion of electrolyte, which can further upgrade ORR activities. This study proffers a strategy to design and fabricate non-noble catalysts with well-designed nanoarchitecture and high catalytic activity.
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2022
·Vol. 148
·期 1
·146-152
·
IF 5.227
Jie Wang,Chenglong Zhao,Feijin Zhou,Hui Lu,Zhenhong Huang,Cheng Yao,Chan Song
The development of novel nanozymes is of great importance for the efficient analysis of biomolecules such as H2O2, glucose, and antioxidants in the diagnosis of some diseases. Herein, novel nanozymes based on Fe nanoparticles (NPs) encapsulated in 2D carbon nanosheets (denoted as Fe@CNs) were constructed and employed in the field of biosensing. Notably, Fe@CNs have intrinsic dual mimic enzyme properties. The colorless colorimetric substrate 3,3′,5,5′-tetramethylbenzidine (TMB) can be oxidized by Fe@CNs as oxidase- and peroxidase-like nanozymes, respectively. The generation of the oxidation state TMB (oxTMB) resulted from the presence of reactive oxygen species (ROS) which were produced by the catalytic decomposition of the dissolved oxygen or H2O2. Thus, a simple colorimetric biosensor was proposed to detect glutathione (GSH), H2O2, and glucose. In addition, the Fe@CN-based nanozymes also have excellent reusability in enzymatic catalysis. After separating from the sensing systems, Fe@CNs can be reused in other catalytic processes. This colorimetric method could be used as a universal sensing platform for the detection of antioxidants and H2O2-related bioanalysis. This work broadens the application of novel nanozymes in biosensing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Shuang Wei,Hao Li,Kexin Li,Ruirui Zhang,Guosheng Wang,Ruixia Liu
We report the fabrication of Ce–Fe oxides (CFOs) derived from Prussian blue analogues (PBAs) with different shapes of sphere (CFO-S), bipyramid (CFO-B), and flower (CFO-F), which are prepared by controlling the volume ratio of water and ethanol and the addition of deep eutectic solvents (DESs) to control the solvent environment using a modified coprecipitation method. The structure, morphology, and the surface properties of Ce–Fe oxides were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). The catalytic performance of PBA-derived Ce–Fe oxides was evaluated for the oxidation of cyclohexane, which positively correlated with surface oxygen vacancy and the amount ratio of Ce/Fe. The conversion for cyclohexane of CFO-S and CFO-B was 9.03 and 9.25%, respectively. However, CFO-S had a higher selectivity for K/A-oil (cyclohexanone and cyclohexanol) of 81.8%, resulting from the exposed crystal plane (100) compared to CFO-B (75%). Besides, CFO-F was rich in the Fe2O3 crystal phase, which is beneficial for KA selectivity. It was found that Ce3+, Fe3+, and OV had an important influence on the activation of C–H bonds, which provides a reference for the design of efficient alkane oxidation catalysts.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2022
·
IF 4.326
Zhonghuan Zhu,Pengbo Liu,Pingping Du,Bo Yu,Xiaopeng Li,Yong Wang,Li-Ping Lv
Rational design of effective non-noble metal-based electrocatalysts with high conductivity, abundant active sites, and superior stability for zinc–air batteries (ZABs) with long-term cycling ability is highly demanded. A suitable carrier that can provide a high specific surface and porous structure to facilitate the exposure of active sites and the diffusion of reactants, products, and charges is of great importance. Herein, one-dimensional (1D) Fe–Zn-doped porous carbon fibers (Fe–Zn@NCF) are prepared from a polymer fiber matrix encapsulated with Fe-doped ZIF-8 nanocrystals by pyrolysis. The Fe–Zn@NCF exhibits good performance toward the oxygen reduction reaction or oxygen evolution reaction. Impressively, the assembled ZAB with Fe–Zn@NCF as the catalyst delivers a maximum peak power density of 184.6 mW cm–2, excellent rechargeability with a round-trip efficiency of 66.5%, and stable operation over 1600 h (800 cycles). These excellent electrocatalytic performances can be attributed to the Fe/Zn-based dual catalytic active sites and the 1D carbon fiber support of the catalyst with a hierarchical porous structure, a large surface area, and high conductivity that can facilitate fast mass and electron transportation and maintain the structural stability of the catalyst during cycling.
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Rui Ma,Xun Cui,Xiaoxue Xu,Yonglin Wang,Gaoqiang Xiang,Likun Gao,Zhiqun Lin,Yingkui Yang
The rational design and facile synthesis of cost-effective and high-performance carbon-based catalysts for oxygen reduction reaction (ORR) is of great significance but remain challenging. Herein, we report the crafting of a robust Fe,N,P-codoped, ultrafine Fe 2 P nanocrystals decorated, highly hierarchical porous carbon nanoshells (denoted Fe,N,P-CNSs/Fe 2 P) via a simple yet robust one-step synergetic phosphorization and pyrolysis approach for highly-efficient ORR. Specifically, well-defined polypyrrole- co -polyaniline hollow nanospheres with a shell thickness of ≈ 43 nm (PPy- co -PANI-HNs) are first elaborately synthesized via a facile soft-templating (Triton X-100 micelles) copolymerization of pyrrole and aniline monomers . Subsequent one-step synergetic phosphorization and pyrolysis of PPy- co -PANI-HNs pre-impregnated with NaH 2 PO 2 ·H 2 O and FeCl 3 (H 2 PO 2 - ,Fe 3+ @PPy- co -PANI-HNs) yields Fe,N,P-CNSs/Fe 2 P with a well-crafted ultrathin nanoshell (shell thickness of ≈13 nm) architecture containing abundant hierarchical porosity . Remarkably, an alkaline electrolyte capitalizing on the resulting Fe,N,P-CNSs/Fe 2 P manifests excellent ORR performance with the half-wave and onset potentials ( E 1/2 of 0.854 V and E onset of 0.955 V) comparable to Pt/C, diffusion limited current density ( J L of −5.98 mA cm −2 ) higher than Pt/C, and long-time durability and methanol resistance better than Pt/C, demonstrating great potential as air cathode in zinc-air batteries (maximum power density of 170 mW cm −2 and specific capacity of 824.5 mA h g −1 ). Combined experimental and theoretical studies reveal that the impressive ORR performance of Fe,N,P-CNSs/Fe 2 P originates from simultaneous compositional (i.e., Fe,N,P-codoping and ultrafine Fe 2 P nanocrystals decorating) and structural (i.e., hierarchically porous ultrathin nanoshell architecture) tailoring enabled by the judicious one-step synergetic phosphorization and pyrolysis.
✓ 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）