Inorganic Chemistry Frontiers
·
2024
·
IF 6.1
Xiaoqu Wang,Limin Wang,Yongchun Liu,Raj Kumar,Li Liu,Qiulan Huang,Dujuan Huang,You-Jun Fan,Du-Hong Chen,Wei Chen
For large-scale hydrogen production from electrocatalysis of water, the Ni- and/or Fe-based catalysts were commonly used but limited by the ultrahigh overpotential and poor stability at high current density (>500 mA cm−2). Here, the reconstruction of M(OH)x/Fe3O4 (M = Ni, Fe) arrays has been fabricated for boosting the oxygen evolution reaction (OER). The prepared M(OH)x/Fe3O4 grewon iron foam (M(OH)x/Fe3O4/IF) catalysts exhibited low overpotentials of 214 and 311 mV for OER at the current densities of 50 and 500 mA cm−2, respectively, besides the excellent stability up to 70 h of operation at a current density of 10 mA cm−2 in 1 M KOH. The in situ Raman spectra revealed that, the reconstruction of M(OH)x/Fe3O4/IF boosted the OER activity. Theoretical calculation revealed favorable absorption of O2 at Ni site of M(OH)x/Fe3O4/IF during OER. This work highlights the reconstruction structurally definite catalysts for promoting the catalytic activity toward OER and the large-scale electrocatalysis of water.
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 MATERIALS SCIENCE
·
2019
·Vol. 54
·期 20
·13358-13367
·
IF 3.442
Zhang Rui,Wu Yuanpeng,Zhang Haiyan,Xue Shishan,Guo Meiling,Zhang Tao
In this work, we present a hydrophobic–oleophilic Fe foam for oil–water separation. Hydrophobic–oleophilic Fe foam was fabricated simply through dip-coating with n -dodecyl mercaptan. The morphology, chemical composition and water contact angle of the Fe foam were characterized. The Fe foam could absorb a variety of oils, such as diesel, toluene, xylene, cyclohexane, dodecyl methacrylate, crude oil, 1,2-dichloroethane, hexane and chloroform, these oils could be underwater or on water surface, and it exhibited excellent durability, verified by the high separation efficiency (more than 98.8% for a cyclohexane–water mixture) after reusing for 48 times. Furthermore, oil collection with the Fe foam could be controlled remotely using external magnetic field, and the Fe foam displayed high flux, good anti-corrosion and wear resistance. The simple and low-cost fabrication method enabled the Fe foam to be a promising candidate for large-scale oil–water separation and for remotely controllable water purification.
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
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Guangchao Xie,Bingjie Li,Shuyue Guo,Wenjing Hou,Yao Wang,Jiamei Liu,Jialin Zhu,Luchen Chang,Xiaoqing Wang,Xiaoyi Wang,Jinbin Pan,Xi Wei
Percutaneous local thermal therapy, containing radio frequency and microwave ablation, is widely utilized in the clinical management of hepatocellular carcinoma (HCC) due to its minimal invasiveness and favorable therapeutic outcomes. However, its further development is limited by a prolonged ablation duration and the risk of excessive heating. Magnetic hyperthermia therapy (MHT) provides a new perspective for percutaneous tumor thermal ablation due to its superior tissue penetration capability and safety. Herein, an iron foam–agarose gel–drug (IF-Aga-drug) implant is prepared using a minimalistic method for percutaneous combination therapy of HCC. The excellent conductivity of IF endows it with strong heating capability owing to eddy current loss in an alternating magnetic field (AMF), while the abundant pores provide ample space for drug loading. Agarose gel imparts the IF platform with universal and efficient drug-loading capacity and controlled drug-release capability that is responsive to magnetic hyperthermia. Doxorubicin (DOX) is utilized as a representative drug to construct the IF-Aga-DOX implant, which is successfully employed in ultrasound-guided, magnetic hyperthermia-based combination chemotherapy for orthotopic HCC in rabbits under ultralow-power magnetic field intensities (Happl·fappl = 2.25 × 108 A m–1 s–1). The developed IF-Aga-drug implant platform offers a convenient and versatile strategy for percutaneous tumor therapy.
研究领域:
医学工程
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肿瘤学
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生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 24
·14872-14883
·
IF 3.442
Wang Yunpeng,Ma Bo,Chen Yantao
Development of inexpensive and high-performance electrocatalysts for water splitting is the major challenge for the scale-up production of gaseous hydrogen. Iron foam, which is composed of the second most abundant metal element on the earth, can boost the water splitting reactions after a simple treatment of surface phosphorization. The as-prepared electrocatalyst, which is denoted as FeP x @Fe, exhibits an excellent activity in alkaline solutions, and requires overpotentials of 124 and 274 mV to approach 10 mA cm −2 for hydrogen evolution reaction and oxygen evolution reaction, respectively. Meanwhile, FeP x @Fe also shows a remarkable performance on overall water splitting, which only needs 1.67 V to reach 10 mA cm −2 and exhibits a satisfying long-term durability. The fabrication strategy of surface phosphorization on iron foam to obtain FeP x @Fe can be valuable for the application of non-noble-metal electrocatalysts toward water splitting.
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 Energy Materials
·
2022
·
IF 6.959
Shiwei Song,Yanhui Wang,Shuyu Zhou,Hongwei Gao,Xueqing Tian,Yungang Yuan,Wei Li,Jianbing Zang
Seawater is more favorable than freshwater in large-scale hydrogen production by electrolysis as it is considered to be the most plentiful natural resource. However, chloride ions with high concentrations in the electrolyte may easily cause corrosion to electrodes or undesirable side reactions during the implementation of seawater electrolysis, thereby degrading the overall system’s efficiency. Therefore, it is necessary to develop an electrocatalyst with excellent catalytic activity and corrosion resistance in order to achieve high-efficiency seawater electrolysis. In this study, a three-dimensional heterogeneous architecture of (FeNi)9S8 nanosheets uniformly decorated with an amorphous MoS2 layer on Ni-Fe foam (MoS2-(FeNi)9S8/NFF) was successfully prepared via one-step hydrothermal vulcanization. Benefiting from the strong interaction at the heterogeneous interface, effective charge transfer, and the enhanced corrosion resistance by MoS2-(FeNi)9S8 coupling, the self-supported MoS2-(FeNi)9S8/NFF electrocatalyst exhibited superior catalytic activity and stability toward overall fresh/seawater splitting. Moreover, it required a low battery voltage of 1.57 and 1.62 V to reach 50 and 100 mA cm–2 in an alkaline natural seawater electrolyte, respectively, and possessed impressive durability up to 72 h, exceeding the pair of Pt/C||IrO2. Accordingly, this study provides a route for the preparation of corrosion-resistant electrocatalysts of hydrogen production by seawater electrolysis.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 11
·2307823
·
IF 14.3
Guangchao Xie,Bingjie Li,Xuejun Zhang,Jiaojiao Yu,Shao-Kai Sun
The magnetic hyperthermia-based combination therapy (MHCT) is a powerful tumor treatment approach due to its unlimited tissue penetration depth and synergistic therapeutic effect. However, strong magnetic hyperthermia and facile drug loading are incompatible with current MHCT platforms. Herein, an iron foam (IF)-drug implant is established in an ultra-facile and universal way for ultralow-power MHCT of tumors in vivo for the first time. The IF-drug implant is fabricated by simply immersing IF in a drug solution at an adjustable concentration for 1 min. Continuous metal structure of IF enables ultra-high efficient magnetic hyperthermia based on eddy current thermal effect, and its porous feature provides great space for loading various hydrophilic and hydrophobic drugs via “capillary action”. In addition, the IF has the merits of low cost, customizable size and shape, and good biocompatibility and biodegradability, benefiting reproducible and large-scale preparation of IF-drug implants for biological application. As a proof of concept, IF-doxorubicin (IF-DOX) is used for combined tumor treatment in vivo and achieves excellent therapeutic efficacy at a magnetic field intensity an order of magnitude lower than the threshold for biosafety application. The proposed IF-drug implant provides a handy and universal method for the fabrication of MHCT platforms for ultralow-power combination therapy.
研究领域:
生物医学工程
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肿瘤学
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
·
2025
·
IF 5
Zilong Liu,Qian Xu,Nian Xu,Weipeng Deng,Huaqiang Chu
The accumulation of ice on surfaces can cause numerous safety issues and inconveniences to human life, so there is an urgent need for a simple and effective anti-icing/de-icing solution. In this work, photothermal superhydrophobic foam iron surfaces with multilevel micro-nano-structures were prepared using a combination of chemical etching and surface modification methods. At −15 °C, the photothermal superhydrophobic surface can delay the freezing time of the droplet from 221 s on the original surface to 1220 s. The surface exhibits a favorable photothermal effect, with the temperature rising to 55.8 °C in 240 s when exposed to outdoor sunlight. Furthermore, ice can be rapidly melted in 251 s when illuminated with 0.2 W/cm 2 . The superhydrophobic photothermal surface also exhibits excellent mechanical stability, retaining its superhydrophobicity following sandpaper abrasion cycles and water flow impact experiments. It is noteworthy that the superhydrophobic photothermal surface exhibits enhanced electrochemical anti-corrosion performance relative to the original surface. These findings substantiate the assertion that the prepared photothermal superhydrophobic iron foam surface not only demonstrates effective anti-icing and de-icing capabilities, but also exhibits superior mechanical durability and chemical stability. The straightforward, efficient, and low-cost approach for the synthesis of photothermal superhydrophobic coatings holds considerable promise for potential applications.
研究领域:
材料科学
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表面工程
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能源与环境
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Jue Wang,Zhi Li,Libei Feng,Dachun Lu,Wei Fang,Qinfang Zhang,Daniel Hedman,Shengfu Tong
The development of efficient and stable catalysts for oxygen evolution reaction (OER) in seawater presents a major challenge for hydrogen production through water electrolysis. In this work, we present a stable NiFe foam catalyst with a Se-doped Ni/Fe oxide surface prepared through a combination of chemical vapor deposition and electrochemical exfoliation. This method effectively modifies the surface of the commercial NiFe foam to a rough and stable Se-doped Ni/Fe oxide surface, displaying exceptional OER performance in both freshwater and seawater with more than 54 days stability in natural seawater. Characterizations reveal Ni-Se doped Fe oxide surface, with subsurface layers consisting of Ni alloyed with a moderate concentration of Fe, optimizes the adsorption free energy of oxygen-containing intermediates. Our results demonstrate a surface engineering approach to activate NiFe foam as a robust OER catalyst for seawater electrolysis, which is beneficial for the hydrogen economy and for the environment.
研究领域:
材料科学
·
电化学
·
能源技术
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Junzhi Liao,Mengyao Xue,Yuankang Bao,Zhengtao Wu,Hao Zhang,Ping Li,Xun Xu,Shuwang Duo
The practical application of NiFe-based materials as high-performance water splitting electrocatalysts is severity restricted by their inferior hydrogen evolution reaction (HER) activity and long-term stability under large current density. Herein, we report a three-dimensional core–shell Ni/NiFe-layered double hydroxide (LDH) Schottky heterojunction on iron foam (Ni/NiFe-LDH/IF) electrode, in which a Ni metal nano-layer was directly deposited on the NiFe-LDH support grown in situ on commercial IF. Such an assembly enhanced the interfacial strength of the Ni/NiFe-LDH/IF electrode, promoted electron transfer and increased the adsorption energy of OH– as proved by density functional theory calculations. Consequently, the ultralow overpotentials (η) of 56 and 277 mV for HER and 140 and 330 mV for the oxygen evolution reaction (OER) resulted in the current densities of 10 and 1000 mA cm–2, respectively. The fabricated Ni/NiFe-LDH/IF two-electrode electrolyzer exhibited excellent water splitting characteristics, which produced the current densities of 10 and 1000 mA cm–2 at cell voltage of only 1.49 and 1.87 V, versus a reversible hydrogen electrode, respectively, which exceeded that of a commercial Pt/C||RuO2 catalyst. Moreover, the Ni/NiFe-LDH/IF electrolyzer demonstrated extremely high stability at 1000 mA cm–2 without a significant decay for more than 1500 h in a 1 M KOH solution and for 250 h at 60 °C in a 6 M KOH solution. This study proposes a scalable and extendable strategy for designing highly efficient and ultrastable electrocatalysts for hydrogen production at an ampere-level current density.
研究领域:
材料科学
·
电化学
·
能源转换与储存
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2015
·
IF 3.313
Yanhui Liang,Qian Liu,Abdullah M. Asiri,Xuping Sun,Yuquan He
In this communication, we report the first use of commercial nickel–iron (NiFe) foam as a novel three-dimensional anode for oxygen evolution reaction in alkaline electrolyte . The NiFe foam electrode exhibits onset overpotential of 300 mV and affords current density of 10 mA cm −2 at an overpotential of 320 mV, with catalytic activity being maintained for at least 10 h. Further acid etching of this electrode leads to greatly enhanced OER activity.
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 ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Peng Chu,Hailei Zhao,Jie Wang,Hongliang Xie,Chongqi Han,Zhao Yang
Negative current collectors play vital roles in the electrochemical performance of liquid metal batteries (LMBs). Employing a three-dimensional (3D) current collector is an effective approach to host molten lithium and reduce the effective current density. The Ni-Fe foam is a frequently used 3D current collector for the negative electrode. However, the corrosion of molten lithium towards the Ni-Fe foam skeleton devastates the 3D structure of the current collector and so deteriorates seriously the electrochemical performance of LMB. To enhance the corrosion resistivity, herein, the graphite layer coated Ni-Fe foam (Graphite@Ni-Fe) is prepared by the chemical vapor deposition method. The prepared scaly-like graphite layer plays a bifunctional role in chemistry, preventing corrosion as an effective barrier and improving remarkably the surface lithiophilicity of Ni-Fe foam. The assembled Li||Bi batteries with Graphite@Ni-Fe foam as negative current collector exhibit stable cycling performance with capacity retention of 98.10% and high Coulombic efficiencies over 98.3% at 0.4 A cm −2 over 100 cycles at 500 °C. More importantly, outstanding rate capability is achieved and almost no capacity degradation is observed upon current density change from 0.2 to 2.0 A cm −2 . This work highlights the importance of the lithiophilicity and the corrosion resistance ability of the negative current collectors for LMBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Kaifeng Wang,Ran Mao,Rui Liu,Juanjuan Zhang,Xu Zhao
The electrocatalytic reduction of nitrate (NO 3 − ) to ammonia (NH 4 + ) and further oxidation to N 2 via active chlorine is an effective method for denitrification. High activity, NH 4 + –N selectivity and long-term stability of a cathode are essential for the application. Herein, we reported a sulfur-modified Fe foam (FeS x @FF) cathode, which achieved high NO 3 − –N conversion (94.96%) and NH 4 + –N selectivity (82.29%) due to its enhanced electron transfer, atomic hydrogen (H*) generation, and adsorption of NO 3 − . Combined in-situ differential electrochemical mass spectrometry and theoretical calculations reveal that the ultrafast *NO 3 reduction to *NO 2 and low formation energy of *NO are crucial in reduction of *NO 3 to *NH 3 . The FeS 0.2 @FF cathode for realistic industrial wastewater (∼350 mg L −1 NO 3 − –N) treatment shows high TN removal (90.75%) and N 2 selectivity (98.88%) with an ultralow electrical cost (∼0.22 kWh g −1 N). This designed system has potential for efficient NO 3 − removal in the saline wastewater.
研究领域:
环境科学
·
电催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）