ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Junhong Ma,Akang Sun,Yuemei Liu,Tuan K.A. Hoang,Lijing Yang
Constructing economical and efficient electrocatalysts for oxygen reduction reaction (ORR) is very important to develop clean energy technologies, such as fuel cells and metal-air batteries . In this work, the Fe 2 P-Co 2 P embedded in N-doped biomass-based carbon and carbon nanotube hybrid (Fe 2 P-Co 2 P/NC B -CNT) with plenty of interfacial structure was successfully fabricated using a green strategy. The satisfactory surface area, hierarchical porous structure, and the synergistic effect between Fe 2 P-Co 2 P nanoparticles and nitrogen-doped carbon composite substrate make the Fe 2 P-Co 2 P/NC B -CNT exhibiting excellent catalytic activity and stability for ORR.
研究领域:
材料科学
·
能源技术
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Nanophotonics
·
2021
·Vol. 10
·期 12
·3267-3278
·
IF 8.449
Shanshan Liu,Jiawen He,Ruixiang Song,Mengmeng Zhang,Lianghao Huang,Jing Chen,Meng Wang,Fang Liu,Feifan Zhou
Treatment of pancreatic cancer is faced with great difficulties and challenges due to high lethality and metastasis. Synergism of targeted therapy and immunotherapy has been considered as ideal strategy to both eliminate primary tumors and control metastases. For the treatment of advanced pancreatic cancer, we demonstrated a local photothermal therapy (PTT) following administration of monoclonal antibody of programmed death ligand 1 (αPD-L1). Fe 2 P nanorods were employed as a Fenton agent and photothermal agent, which modified with DSPE-PEG 2000 -Mal for improved biocompatibility and Mal mediated-antigen presentation. Under a low dose laser irradiation at 980 nm, Fe 2 P-PEG-Mal nanorods (NRs) mediated PTT could induce immunogenic tumor cell death that can cause dendritic cells (DCs) infiltration and maturation. In a bilateral pancreatic tumor model, the local treatment of NRs-PTT on primary tumor could cause the increased infiltration of cytotoxic T lymphocytes (CTLs) and decreased residential of M2 macrophages in untreated distal tumors. Furthermore, subsequently intervened αPD-L1 could enhance cell death triggered by CTLs in distal tumors through reversing immunosuppression. An orthotopic pancreatic tumor model was used to further confirm the therapeutic outcome. Finally, the combination of NRs based PTT and αPD-L1 based immunotherapy was able to significantly eliminate orthotopic pancreatic tumors and reduce mesentery metastases. Thus, the strategy may provide a more effective treatment for pancreatic cancer.
研究领域:
肿瘤学
·
纳米技术
·
免疫疗法
·
生物医学工程
✓ 已验证
DOI
高影响因子
Small
·
2025
·
IF 12.1
Qingmeng Guo,Fengting Li,Chongxi Zhang,Zhikun Wang,Zixi Kang,Lili Fan,Daofeng Sun
The strategic construction of heterostructures centered around Fe 2 P is proven to be effective for improving its performance in the oxygen reduction reaction (ORR) and zinc–air batteries (ZABs). In this study, SbZn is strategically employed to construct a novel Fe 2 P/SbZn heterostructure on N,P-doped carbon scaffolds, serving as an efficient electrocatalyst for the ORR in ZABs. Through a one-step pyrolysis of a Fe, Sb, P-incorporated zeolitic imidazolate framework, the Fe 2 P/SbZn@PNC catalyst is successfully synthesized. This catalyst demonstrates high ORR activity in alkaline media, achieving a half-wave potential of 0.936 V and a limiting current density of 6.18 mA cm −2 , both significantly surpassing those of commercial 20 wt% Pt/C. When applied in zinc–air batteries, the Fe 2 P/SbZn@PNC-based ZABs deliver a higher peak power density and superior long-term cycling stability compared to the Pt/C benchmark. Density functional theory (DFT) calculations reveal that the Fe 2 P/SbZn interface drives charge redistribution, optimizing the adsorption/desorption of oxygen intermediates and reducing the rate-determining energy barrier in ORR, thus enhancing catalytic activity. This innovative heterostructure provides new avenues for designing efficient electrocatalysts for energy conversion and storage.
研究领域:
材料科学
·
电化学
·
能源存储与转换
·
纳米催化
·
计算材料学
✓ 已验证
产品关联
DOI
PubMed
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.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Gaopeng Huang,Xiaojun Pan,Yakun Yang,Binghui Zhou,Bo Wei,Yufei Wang,Guicheng Liu,Chao Xu,Xiaoze Du,Feng Ye,Weijie Yang
One effective approach to improve the slow kinetics of oxygen evolution reaction (OER) for water splitting is to develop high-performance electrocatalysts . The Fe 2 P-NiFe LDH/NF catalyst with hetero-interfaces in this work was created using an easy two-step process that involved electrodeposition and hydrothermal processes. In the alkaline electrolyte , the as-prepared Fe 2 P-NiFe LDH/NF demonstrates improved OER performance. The Fe 2 P-NiFe LDH/NF catalyst only requires a low overpotential of 200 mV to achieve 10 mA cm −2 , indicating the high efficiency for electrochemical reactions . Additionally, the Tafel slope of the catalyst is measured to be 59 mV dec −1 . Even at a high current density of 100 mA cm −2 , the overpotential of Fe 2 P-NiFe LDH/NF is only 250 mV, which is noticeably smaller than that of NiFe LDH/NF and commercial IrO 2 /NF. In addition, the current density of Fe 2 P-NiFe LDH/NF remains stable without any degradation during a 12 h durability test. By the SEM and TEM results, it showed that Fe 2 P with a crystalline-amorphous hybrid structure is grown at the edge of NiFe LDH nanosheets . The average length of Fe 2 P-NiFe LDH nanosheet is about 600 nm, which is longer than that of NiFe LDH nanosheets (about 400 nm). This increased size provides a larger specific area. As a result, more exposed active sites and a synergistic effect at the hetero-interface between Fe 2 P and NiFe LDH were achieved, which produces a distinct decrease in charge transfer resistance and promotes catalytic performance. Moreover, density functional theory (DFT) calculations emphasize the significance of rationally designed hetero-interfaces in increasing OER activity. It is found that the Fe 2 P-NiFe LDH/NF with a hetero-interface is an efficient OER catalyst for water splitting.
研究领域:
电化学
·
材料科学
·
催化
·
能源材料
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Huanzhong Zeng,Rui Liu,Qianghong Wu,Yuanyou Peng,Yunlong Yang,Junlong Chen,Jinling Li,Jianzhou Niu,Guang Liu,Fuliang Zhu,Fen Ran
Biomanufacturing is an emerging technology that utilizes living organisms as production tools, with high specificity and selectivity, enabling customized production. Plant cell is a typical “factory” of biomanufacturing. Inspired by this, a novel bio-assisted strategy for preparing biomass-derived carbon@Fe 2 P composites has been proposed. For synthesis, Lemna minor L. is chosen as chassis plant to absorb Fe 3+ at first, then Fe 2 P can be generated in-situ in biomass during calcination. To reveal the transformation of Fe 2 P, the fate of Fe 3+ that absorbed by Lemna minor L. has been evolved. The carbon layers derived from the naturalized bioreactors (Lemna minor L. cells) can effectively constrain and disperse the synthesized Fe 2 P within nanoscale. The produced composite exhibits excellent charging-discharging capability that can achieve high specific capacity (≈340 mAh g −1 ) and long cycle life (2000 circles) at 1 A g −1 . These results demonstrate the green synthesis of Fe 2 P and the potential of the composite as a high-capacity and fast-charging anode. This strategy can also be used to prepare other transition metal phosphides (Co 2 P and Ni 12 P 5 ). In addition, this strategy combines the recovery and secondary utilization of metals in effluent, which is meaningful for phytoremediation.
研究领域:
材料科学
·
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Song Liu,Jinxing Huang,Haiwei Su,Guogang Tang,Qinqin Liu,Jingfang Sun,Jing Xu
Constructing appropriate cocatalysts to modify semiconductors is significant for improving photocatalytic H 2 production and stability. Transition metal phosphides (TMPs) with low-cost and high efficiency have been considered as one of the most promising non-noble-metal cocatalysts. Herein, a novel multiphase phosphide nanosheet , Fe 2 P/Ni 3 P cocatalyst, was target designed and in-situ incorporated with Cu 2 O nanocubes via a phosphorization method for photocatalytic H2 evolution under visible light irradiation. The optimal Cu 2 O/Fe 2 P/Ni 3 P sample provided 10-folds higher photocatalytic activity of H2 evolution rate (108.68 μmol g−1 h−1) than that of single Cu 2 O (18.6 μmol g −1 h −1 ), which could be ascribed to fast charge transfer from the Cu 2 O to multiphase phosphide Fe 2 P/Ni 3 P cocatalyst and efficient separation of the light-induced charge carriers. Moreover, the Fe 2 P/Ni 3 P cocatalyst also improved the photo-corrosion of Cu 2 O caused by the disproportionation reaction, leading the Cu 2 O/Fe 2 P/Ni 3 P hybrid possessed robust stability. Additionally, this work guarantees useful insights in employing novel TMPs-based cocatalysts to construct visible-light-responsive photocatalysts , which manifests promising applications in the dwindling supply of energy.
研究领域:
材料科学
·
能源科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Zhixuan Huang,Kaifeng Yu,Doudou Wang,Ye Zhang,Lili Li,Ce Liang
Herein, a facile way was reported for fabrication of the anode nanocomposites with efficient lithium/sodium storage and excellent cycling stability. Iron phytate nanoparticles embedded in TiO 2 (IP/TiO 2 ) was prepared by coaxial electrospinning with the aid of PAN and PVP. N, P-doped Fe 2 P@TiO 2 core-shell carbon nanofibers (Fe 2 P@TiO 2 /CNF) was prepared after heat treatment. When Fe 2 P@TiO 2 /CNF were introduced as a self-supporting anode in lithium/sodium-ion batteries, Fe 2 P core supplied high energy density , and N, P-doped carbon fiber could induce the structural defects, facilitate electron transport and improve electrical conductivity . Moreover, TiO 2 shell inhibited volumetric expansion and pulverization of Fe 2 P core and improved the cycling stability of the anode. The Fe 2 P@TiO 2 /CNF electrode exhibited a large reversible capacity (LIB: 1175.7 and SIB: 519.8 mAh g −1 ), excellent cycling ability and outstanding rate performance. As anode in LIBs for Fe 2 P@TiO 2 /CNF, capacitance and diffusion control played important roles in Li + intercalation and deintercalation, simultaneously. When Fe 2 P@TiO 2 /CNF anode was used in SIBs, capacitive control behavior occupied a major role and displayed outstanding electrochemical performance . This work offers a possibility for designing anode nanocomposite with outstanding capacity and cycling stability in lithium/sodium-ion batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhiwen Li,Hezhen Wang,Yan Xie,Yifei Zhang,Jianxin Gao,Yinghao Xu,Li Chen,Liangliang Xu,Erdong Wang,Gao Li
It is of great significance but remains challenging to simultaneously development cost-effective and efficient non-noble metal electrocatalysts (NNMEs) for oxygen reduction reaction (ORR) in both alkaline and acidic solutions. In current work, a multi-component synergism system is developed, which is comprised of molybdenum phosphide (MoP) shell onto iron phosphide clusters anchored on carbon matrixes that embedded with numerous FeN 4 species (MoP/Fe 2 P-FeN 4 ). The optimized MoP/Fe 2 P-FeN 4 electrocatalyst delivers a synergistic enhancement in both alkaline and acidic ORR performances: E 1/2 : 0.885 V (0.1 M KOH electrolyte) and E 1/2 : 0.742 V (0.1 M HClO 4 electrolyte). Furthermore, the equipped zinc-air batteries (ZABs) of MoP/Fe 2 P-FeN 4 exhibit a power density of 140.6 mW cm −2 @219.6 mA cm −2 , which surpasses the corresponding Fe 2 P-FeN 4 and commercial Pt/C catalyst. The computational calculations reveal that MoP/Fe 2 P-FeN 4 shows a relative increase of d -band center closer to Fermin level than Fe 2 P-FeN 4 , tuning the rate-determining step to conversion of *O to *OOH intermediate, thus significant reducing the energy barrier and enhancing ORR activity. This strategy opens new opportunities to rational design of Fe-based nanocomposites for stimulated ORR and further ZAB activities.
研究领域:
材料科学
·
电化学
·
催化科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Xu Jiangnan,Zhang Xuanhang,Naghizadeh Matin,Liu Wenhuan,Xu Bing,Dong Sheying
The creation of electrocatalysts composed of nonprecious
metals,
which must be efficient, durable, and economical, constitutes a major
scientific hurdle for achieving practical overall water splitting
(OWS). In this study, a layered Ni 2 P–Fe 2 P–Co 2 P nanoarray electrocatalyst was fabricated
on nickel foam (NF) using NiFeCoOH via electrodeposition followed
by a low-temperature phosphidation strategy. The electrocatalyst features
abundant in-plane heterojunctions formed via cation exchange, which
effectively tune its morphology and enhance charge-transfer efficiency
and active-site exposure. At the same time, the heterojunctions promote
the adsorption/desorption of reaction intermediates, thereby synergistically
enhancing the catalytic activity for both the hydrogen evolution reaction
(HER) and oxygen evolution reaction (OER). In an alkaline electrolyte,
the catalyst requires low overpotentials of only 43 mV for HER and
259 mV for OER to deliver a current density of 10 mA cm –2 and demonstrates excellent durability. When employed for overall
water splitting, it achieves 10 mA cm –2 at a low
cell voltage of 1.43 V.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hongwei Wang,Tsung-Cheng Yang,Hao Zheng,Zeyi Jiang,Chia-Min Yang,Nien-Chu Lai
Transition metal-based nanoparticles (NPs) are emerging as potential alternatives to platinum for catalyzing the oxygen reduction reaction (ORR) in zinc-air batteries (ZAB). However, the simultaneous coexistence of single-atom moieties in the preparation of NPs is inevitable, and the structural complexity of catalysts poses a great challenge to identifying the true active site. Herein, by employing in situ and ex situ XAS analysis, we demonstrate the coexistence of single-atom moieties and iron phosphide NPs in the N, P co-doped porous carbon (in short, Fe-N 4 -Fe 2 P NPs/NPC), and identify that ORR predominantly proceeds via the atomic-dispersed Fe-N 4 sites, while the presence of Fe 2 P NPs exerts an inhibitory effect by decreasing the site utilization and impeding mass transfer of reactants. The single-atom catalyst Fe-N 4 /NPC displays a half-wave potential of 0.873 V, surpassing both Fe-N 4 -Fe 2 P NPs/NPC (0.858 V) and commercial Pt/C (0.842 V) in alkaline condition. In addition, the ZAB based on Fe-N 4 /NPC achieves a peak power density of 140.3 mW cm −2 , outperforming that of Pt/C-based ZAB (91.8 mW cm −2 ) and exhibits excellent long-term stability. This study provides insight into the identification of true active sites of supported ORR catalysts and offers an approach for developing highly efficient, nonprecious metal-based catalysts for high-energy–density metal-air batteries.
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
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Linli Dai,Yi Xie,Yongkui Zhang,Yabo Wang
In this work, microorganism of Phanerochaete chrysosporium with iron-tolerating and accumulating abilities was cultivated and harvested as mycelial pellets, which could serve as a sustainable and environmental-friendly precursor for iron phosphide/N-doped biocarbon composite preparation. Through one-step pyrolysis process , the inherent Fe and P elements in mycelial pellet enabled the formation of well crystallized Fe 2 P particles, loading on N-doped biocarbon matrix. Benefiting from the porous structure, high specific surface area, N doping-induced defects and C O groups of biocarbon, as well as the good electron-donating property of Fe 2 P, the as-obtained Fe 2 P/BC composite performed well for bisphenol pollutant (e.g., BPAF) removal through peroxymonosulfate (PMS) activation. Specifically, almost complete BPAF removal was achieved within 30 min adsorption and 10 min catalysis process with an apparent reaction rate constant of 0.486 min −1 . The good crystallinity and protective carbon layer wrapping on Fe 2 P enabled the wide pH adaptability and low iron leaching of Fe 2 P/BC in catalytic reaction . Inorganic anions and humic acid brought only slight inhibition for BPAF removal, which could be overcome by prolonging reaction time to 30 min. Further mechanism studies indicated that reactive oxygen species , e.g., SO 4 - •, •OH and 1 O 2 were generated through both radical and non-radical pathways and contributed to BPAF degradation. After treatment by Fe 2 P/BC-PMS system, the total organic carbon (TOC) of original BPAF solution (20 mg L −1 ) was reduced by 51.6%. Fortunately, the residual degradation intermediate products showed much reduced ecotoxicity in both predicted (ECOSAR program) and experimental results (growth inhibition test using Raphidocelis subcapitata as ecological indicator).
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
危险品化学品经营许可证（带存储）