JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Kewei Meng,Xiaomin Hu,Yuanyuan Zhang,Ting Zeng,Qijin Wan,Guosong Lai,Xinyue Chen,Nianjun Yang
Quantitative analysis of biologically important compounds plays extraordinary roles in diagnostic studies of human health. In this study, a versatile electrochemical sensing platform is proposed for selective quantification of ascorbic acid (AA), dopamine (DA), uric acid (UA), acetaminophen (AC) and l -tryptophan (Trp). Such a platform is based on a nanocomposite of FeOOH nanorod and expanded graphite (FeOOH nanorod/EG), prepared through a hydrothermal process. The characterization of its morphology and electrochemical properties by means of microscopic methods and electrochemical techniques reveals that this nanocomposite exhibits outstanding electrocatalytic activity and sensing performance toward these bioanalytes. A combined action between EG and FeOOH is confirmed, where the former provides a huge electroactive surface area as well as a fast electron transfer rate, while the latter features strong electrical catalytic ability. This platform exhibits high sensitivity toward voltammetric quantitation of AA, DA, UA, AC and Trp, and their detection limits are 3.28, 0.22, 0.02, 0.0014 and 0.03 μM (S/N = 3), respectively. Beyond that, the proposed FeOOH nanorod/EG electrochemical sensing platform shows good selectivity, high reproducibility and stability in the quantitative analysis of these bioanalytes. The established sensing platform has been also successfully adopted in analyzing these bioanalytes in real biological serum and urine samples or commercial drugs. Consequently, the fabricated FeOOH nanorod/EG nanocomposite is a promising electrode material in the applications of sensing different bioanalytes.
研究领域:
分析化学
·
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Rui Liu,Ru Li,Lei Yang,Rong-Xu Wang,Han-Yang Chen,Nan Wang,Zhi Li,You-Qiang Chen,Seeram Ramakrishna,Yun-Ze Long
Herein, FeOOH quantum dots and a Z-scheme BiVO4/g-C3N4 catalyst were coupled to obtain a Z-scheme heterojunction for photo-Fenton reactions to facilitate the transport of electrons and the generation of radicals. The obtained materials exhibited better visible light-driven photo-Fenton degradation of Rhodamine B, which is 22.06 times as high as pure BiVO4, 18.65 times as high as pure g-C3N4, and 3.44 times as high as BiVO4/g-C3N4, showing great potential in photo-Fenton degradation of pollutants. Moreover, the performance tests, radical capture experiments, and time-resolved fluorescence spectroscopy revealed that electron migration exists between the BiVO4/g-C3N4 and FeOOH-QDs. This composite system accelerates the cycling of Fe3+/Fe2+ during the photo-Fenton process, thus continuously generating reactive species (hydroxyl radicals (−OH) and superoxide radicals (−O2–)), leading to the rapid degradation of organic pollutants.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 8
·期 37
·19544-19554
·
IF 11.301
Juan Li,Youlong Xu,Yuan Zhang,Cheng He,Tongtong Li
Lithium–sulfur batteries (LSBs) have been exploited as advanced energy storage systems owing to their high theoretical specific capacity. However, the shuttle effect from lithium polysulfides (LiPSs) and the sluggish redox kinetics are the main obstacles hindering LSBs' commercialization. In this study, an efficient host material to adsorb LiPSs and regulate their redox conversion was designed. Nano-rod iron hydroxide/electrochemical exfoliated graphene (FeOOH/EG) composites were synthesized by a traditional hydrothermal method. After ball-milling and annealing with modified sulfur, the FeOOH/EG-S composite presents that the sulfur particle is surrounded by FeOOH/EG sheets. As evidenced by XPS results, the FeOOH/EG composite provides strong chemical bonding towards LiPSs with Fe–S, Li–O and S–C bonds. Potentiostatic discharging tests demonstrated that FeOOH/EG promotes the precipitation of solid-state Li2S. First-principle (DFT) calculations revealed that LiPSs are adsorbed by FeOOH within a range of adsorption energies from −1.07 eV to −5.7 eV, indicating that FeOOH has favourable affinity towards polysulfides. Meanwhile, the low diffusion energy barrier (0.07 eV and 0.11 eV) enables the fast diffusion of LiPSs across FeOOH, enhancing the redox reaction kinetics during the charge/discharge process. As a result, the prepared FeOOH/EG-S electrode delivers a reversible capacity of 1323 mA h g−1 at a current density of 0.1C. After charging/discharging for 500 cycles at a current density of 2C, the FeOOH/EG-S electrode displays a capacity of 733 mA h g−1, which shows a low capacity decay rate of ∼0.027% per cycle. This work will be quite inspiring to promote the commercialization of LSBs.
研究领域:
能源材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Tursunjan Aydan,Chao Yang,Yang Xu,Tongtong Yuan,Min Zhang,Hui Li,Xueming Liu,Xintai Su,Jide Wang
A Hybrid magnetic composite material Fe 3 O 4 @Cu x O y /C (where, x = 1–2; y = 0–1) was prepared via pyrolysis of FeOOH decorated Cu 3 (BTC) 2 (where, BTC = 1, 3, 5-benzenetricarboxylic acid) as a precursor. The obtained products was successfully applied to reduction reaction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) as a catalyst. Compared with other reported materials, Fe 3 O 4 @Cu x O y /C exhibits high catalytic activity with excellent recyclability.
研究领域:
材料科学
·
催化
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Jiarong Wu,Xinyu Li,Dayong Fan,Ming Li,Hongyu Zhu,Shuai Li
Bismuth vanadate (BiVO 4 ) is a promising metal oxide photoabsorber for photoanode applications but is limited by its relatively short hole diffusion length resulting in severe charge complexation and limited performance. Herein, Ag 3 PO 4 was compounded on BiVO 4 through photodeposition of Ag followed by solution oxidation. The annealing of the composite BiVO 4 /Ag 3 PO 4 heterojunction at 400 °C precipitated some Ag from Ag 3 PO 4 on BiVO 4 /Ag 3 PO 4 to form a new ternary photoanode BiVO 4 /Ag 3 PO 4 /Ag. Compared to the unannealed sample, the light trapping and crystal quality enhanced, resulting in increased photocurrent density of the annealed BiVO 4 /Ag 3 PO 4 photoanode (4.46 mA cm −2 ) by 59.9 % when compared to the unannealed photoanode (2.79 mA cm −2 ). To further optimize the photoanode, co-catalyst iron hydroxyl oxide (FeOOH) was deposited to yield BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode with maximum photocurrent density of 4.71 mA cm −2 at 1.23 V (vs. reversible hydrogen electrode, V RHE ), equivalent to about 3.7-fold the value of BiVO 4 photoanode. The photoanode maintained 90.8 % of its initial current density after 3 h stability tests. Besides, the photoelectrocatalytic degradation of Rhodamine B pollutant by BiVO 4 /Ag 3 PO 4 /Ag and BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode showed performance enhancement when compared to BiVO 4 /Ag 3 PO 4 . Overall, the proposed strategy looks very promising for the rational fabrication of high-efficiency heterojunction photoanodes.
研究领域:
材料科学
·
光电化学
·
催化
·
环境科学
✓ 已验证
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 2
·1-14
·
IF 21.8
Xi Tingting,Li Chaojian,Yu Yaqian,Wei Weiqi,Wang Sha,Xu Tingting,Xiao Huining,Dai Hongqi,Zhou Xuelian,Bian Huiyang
Enhancing the dispersibility and recoverability of powdered catalysts is essential for developing efficient and cost-effective photocatalytic systems. Herein, β -FeOOH nanoparticles were in-situ deposited on commercially available filter paper (FP) to construct paper-based composite material ( β -FeOOH@FP). Results showed that the rod-like β -FeOOH nanoparticles were uniformly distributed in the FP matrix without destroying the crystalline structure of cellulose. The resulting β -FeOOH synthesized at 3 h presented the highest photoelectrochemical response and exhibited better suppression of electron–hole recombination, allowing more photogenerated electrons to participate in the reaction. The β -FeOOH@FP catalyst achieved a 94.1% photocatalytic degradation rate of tetracycline (TC) within 120 min compared to the pure β -FeOOH (42.2%) and FP (20.1%) under simulated visible light irradiation. Photocatalytic degradation kinetics also demonstrated that the rate constant of β -FeOOH@FP was 9.6 × 10 −3 min −1 , much higher than that of others. In addition, the resulting β -FeOOH@FP composite material exhibited excellent stability and reusability with a photocatalytic efficiency of over 90% after five cycles. These findings provide a simple and cost-effective strategy to improve the degradation performance of powdered semiconductor catalysts and pave a new way to develop cellulose-based nanocomposites with high photocatalytic efficiency.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhu Xiong,Zhuoran Yi,Mahmud Sakil,Lei Huang,Zehui Wang,Xueyan Wu,Qingnan Wang,Zhu Wang,Gaosheng Zhang,Wei Zhang,Shuaifei Zhao,Lijing Zhu
To overcome conventional membrane challenges in eliminating natural organic matter (NOM) from natural water, we successfully integrated β -iron hydroxide oxide ( β -FeOOH) nanorods onto a PAA-PVDF blend membrane fabricated from poly(acrylic acid) (PAA) and polyvinylidene fluoride (PVDF).Contact angle assessments with various fluids confirmed the strong organic matter adsorption property of the membrane, with a dispersion component of surface energy at 26.7 mJ/m 2 for β -FeOOH@PAA-PVDF. This membrane consistently removed over 80 % of dissolved organic matter in the cross-flow filtration of water containing 50–150 ppm fulvic acid (FA) under neutral conditions. Such remarkable performance is attributed to the interactions between the Fe-OH groups and the carbonyl (2.960 eV) and phenolic (2.864 eV) groups of FA, overcoming the size sieving limits. Under acidic conditions, zeta potential tests revealed effective ferric coagulation, resulting in over 90 % FA (50 ppm) removal. We thoroughly investigated that common cations (e.g., K + and Ca 2+ ) have impacts on FA removal using β -FeOOH@PAA-PVDF. The used membranes regained nearly original fluxes after washing with trace hydrogen peroxide (H 2 O 2 ) under ultraviolet (UV) light illumination, outperforming traditional washing with sodium hypochlorite (NaClO). Electron spin resonance spectrometry elucidated the cleaning mechanism of β -FeOOH@PAA-PVDF was superoxide anion radical ( O 2 − ) and singlet oxygen ( 1 O 2 ) active species. In summary, β -FeOOH@PAA-PVDF showed a superior adsorption capacity (2200 mg/m 2 ) and efficient photocatalytic degradation towards NOM in natural water, providing an efficient cleaning technology for membrane reuse.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Beirong Liang,Sisi Zhu,Jingchu Wang,Xianqing Liang,Haifu Huang,Dan Huang,Wenzheng Zhou,Shuaikai Xu,Jin Guo
Developing low-cost and high-capacity anode materials is one of the momentous issues in lithium-ion batteries (LIBs). In this study, we propose a facile one-pot hydrothermal strategy to synthesize silicon-doped FeOOH@reduced graphene oxide (Si-FeOOH@rGO) composites, which integrate the advantages of hybridization and doping engineering as novel anodes for LIBs. The Si-FeOOH nanorods are uniformly grown on the conductive rGO sheets with the formation of Fe−O−C bonding at interfaces. Results demonstrate that the doping of Si can effectively suppress the aggregation of active nanoparticles, facilitate Li + diffusion, and promote the conversion reaction of FeOOH. As a result, the optimized Si-FeOOH@rGO composite manifests high reversibility (1370.5 mAh g −1 at 0.1 A g −1 over 200 cycles), outstanding rate capability (690.4 mAh g −1 at 1 A g −1 , 599.2 mAh g −1 at 2 A g −1 ) and excellent long-term cyclability (920.1 mAh g −1 at 0.5 A g −1 and 612.7 mAh g −1 at 1 A g −1 after 380 cycles). The simple fabrication strategy and superior electrochemical performance indicate that this novel Si-FeOOH@rGO composite shows a great application prospect as anode material for advanced LIBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 31
·17664-17673
·
IF 3.049
Kai Wang,Yi Yang,Tian C. Zhang,Ying Liang,Qingguo Wang
Magnetic Co-doped Fe3O4@FeOOH nanocomposites were prepared in one step using the hydrothermal synthesis process for catalyzing peroxymonosulfate (PMS) to degrade refractory methylene blue (MB) at a wide pH range (3.0–10.0). The catalysts' physiochemical properties were characterized by different equipment; Fe3+/Fe2+ and Co3+/Co2+ were confirmed to coexist in the nanocomposite by X-ray photoelectron spectroscopy. The nanocomposite effectively catalyzed PMS's decoloration (99.2%) and mineralization (64.7%) of MB. The formation of Co/Fe–OH complexes at the surface of nanoparticles was proposed to facilitate heterogeneous PMS activation. Compared with the observation for Fe3O4@FeOOH, the pseudo-first-order reaction constant was enhanced by 36 times due to Co substitution (0.1620 min−1 vs. 0.0045 min−1), which was assigned to the redox recycle of Fe3+/Fe2+ and Co3+/Co2+ in Co-doped Fe3O4@FeOOH. Besides, the catalyst could be easily reused by magnetic separation and exhibited relatively long-term stability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Rushi Jin,Chaohui Deng,Guojin Liu,Shimin Zhai,Dongming Qi
Fenton reaction is one of the effective methods applying in the industrial wastewater treatment . However, the iron ions (Fe 3+ ) used in conventional Fenton reaction are difficult to recover, which will convert into Fe(OH) 3 and produce a large amount of excess sludge . Biochar with rich porous structure is an excellent adsorbent, but it is challenging to reuse after adsorption. Considering these facts, the FeOOH was in-situ loaded onto carboxylated biochars, and the recyclable heterogeneous catalysts (FeOOH@CBC) were fabricated. The cyclic adsorption-photocatalytic processes of FeOOH@CBC with different crystal structures (amorphous FeOOH, α-FeOOH and β-FeOOH) for reactive red X-3B were explored. Under the simulated solar irradiation, the α-FeOOH@CBC shown outstanding catalytic activity for reactive red X-3B (1000 mg·L −1 ) with a decolorization rate of 99.9% in 90 min, and the released Fe 3+ concentration was below the detection range (0.1 mM) of potassium thiocyanate colorimetry method. After the 10th cycle, the COD removal rate of α-FeOOH@CBC for reactive red X-3B still reached 95% (14,550 mg·g −1 ). The excellent reusability of α-FeOOH@CBC and minimal iron ion release can decrease the solid waste pollution from adsorbed biochar, which may promote the large-scale application of biochar in industrial wastewater treatment.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Yang Yu,Ang Li,Sheng-Qiang Fan,He-Ping Zhao
Dissimilatory iron-reducing bacteria (DIRB) with extracellular electron transfer (EET) capabilities have shown significant potential for bioremediating halogenated hydrocarbon contaminated sites rich in iron and humic substances. However, the role and microbial molecular mechanisms of iron-humic acid (Fe-HA) complexes in the reductive dehalogenation process of DIRB remains inadequately elucidated. In this study, we developed a sustainable carbon cycling approach using Fe-HA complexes to modulate the electron flux from sawdust (SD), enabling almost complete reductive dechlorination by most DIRB (e.g., Shewanella oneidensis MR-1) that lack complex iron-sulfur molybdo enzymes. The SD-Fe-HA/MR-1 system achieved a 96.52% removal efficiency of tetrachloroethylene (PCE) at concentrations up to 250 μmol/L within 60 days. Material characterization revealed that DIRB facilitated the hydrolysis of macromolecular carbon sources by inducing the formation of amorphous ferrihydrite (FeOOH) in Fe-HA complexes. More importantly, the bioavailable FeOOH activated additional intracellular electron flow pathways, increasing the activity of potential dehalogenases. Transcriptome further highlight the innovative role of biogenic amorphous FeOOH in integrating intracellular redox metabolism with extracellular charge exchange to facilitate reductive dechlorination in DIRB. These findings provide novel insights into accelerating reductive dechlorination in-situ contaminated sites lacking obligate dehalogenating bacteria.
研究领域:
环境微生物学
·
污染修复
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 6
·4797-4807
·
IF 2.22
Lyu Cong,Ju Lunan,Yang Xuejiao,Song Lan,Liu Ning
Iron-based catalysts as peroxymonosulfate (PMS) activator are commonly used to oxidize and degrade azo dye. However, there are still some issues such as low catalytic performance, relatively less reactive oxygen species and high metal iron dissolution. As such, a novel iron oxyhydroxide (FeOOHs) with four crystal form was synthesized and employed as efficient PMS activator for AO7 degradation in this study. It was found that the crystal form of catalyst had significant influence on its catalytic performance. β -FeOOH exhibited the best catalytic performance, owing to its smallest lattice size, maximum specific surface area and highest surface hydroxyl density. β -FeOOH/PMS system possessed a great high apparent reaction rate constant (1.3919 h −1 ), which was about 17, 3, 31, 20, 14, 49 and 23 times higher than that in β -FeOOH/persulfate(PS), Fe 0 /PMS, Fe 0 /PS, Fe 2 O 3 /PMS, Fe 2 O 3 /PS, Fe 3 O 4 /PMS and Fe 3 O 4 /PS system, respectively. More importantly, radical quenching tests and Electron spin resonance (ESR) analysis revealed that OH . , SO 4 .− , O 2 .− and 1 O 2 were involved in the reaction process. The catalytic mechanism proposed that β -FeOOH had the effective electron transfer rate performance, and Fe 3+ underwent a reduction to Fe 2+ during the β -FeOOH/PMS catalytic oxidation process. Then, the regeneration of Fe 2+ on the hydroxylated surface of FeOOH promoted the formation of FeOH + , which was crucial for PMS activation and reactive oxygen species (ROS) generation. The recyclability tests proved good stability and reusability of β -FeOOH. This study provides a kind of new understanding of peroxymonosulfate activation for environmental remediation and advances the study of iron-based oxyhydroxide in heterogeneous catalysis.
研究领域:
环境科学
·
催化化学
✓ 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）