Sustainability
·
2023
·Vol. 15
·期 4
·3657
·
IF 3.9
Jinmao Ma,Xiangyu Wang,Xu Zhang,Zhengfang Ye,Sanxiang Sun,Lincheng Zhou
Fenton technology has excellent performance in the treatment of hard-to-degrade organics but tends to cause secondary pollution to the environment. Given its excellent adsorption capacity and the availability of mature adsorption modification studies, poly(chloromethyl styrene)-based resin (PS-Cl) has received much attention for the adsorption of heavy metal ions. However, combining the mature Fenton technology with the highly popular PS-Cl through a stable bridge to exploit the advantages of catalytic degradation performance of Fenton-like technology is the main focus of our work. The PS-NH2@FeSe2catalyst with a core–shell structure was synthesized. The catalytic degradation of tetracycline solution in the presence of PS-NH2@FeSe2and persulfate achieved a satisfactory effect. The removal efficiency was as high as 85.94% within 2 h, and the degradation rate constant was 0.02352 min−1. The main advantages of the PS-NH2@FeSe2catalyst were high stability and recyclability. Thus, the catalyst would not cause secondary pollution to the environment and could still achieve a degradation efficiency of nearly 70% for TC after five times of reuse. The possible catalytic degradation pathways and potential removal mechanisms were investigated through free-radical quenching experiments and HPLC-MS detection of intermediates generated through catalytic degradation. Column experiments were conducted to investigate the effect of the catalyst on the actual removal of wastewater, and a simple flow model was developed using Yellow River water to make the integration of theory and practice possible. In conclusion, the new idea constructed with FeSe2-loaded modified resin offers promising prospects in the removal of refractory organic compounds, such as tetracycline.Keywords:modified resins;iron selenide;catalytic reaction;TC
研究领域:
环境科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yixing Luo,Qingsheng Wu,Yongqing Fu,Ming Wen
Built-in electric field (BIEF) in metallic chalcogenide heterostructures has recently attracted significant attention due to its special interfacial electronic structure and appropriate reaction microenvironment for improving electrocatalytic performance. However, constituent dissolution issues and inferior stability of transition metal selenide heterostructure severely inhibit the formed BIEF to support long-term high-activities for ORR and OER toward zinc-air battery (ZAB). Herein, BIEF was established in CoSe 2 -FeSe 2 hetero-nanostructures encapsulated by N-doped carbon shell on N-doped honeycomb carbon (CoSe 2 -FeSe 2 @NC/NHC) for achieving long-term efficient oxygen electrocatalysis. DFT calculation results confirm that the durable BIEF formed in CoSe 2 -FeSe 2 @NC on NHC not only optimizes interfacial electronic structures and surface adsorption energy, but also offers numerous hyperactive interfacial sites during electrocatalytic reactions. Consequently, the designed CoSe 2 -FeSe 2 @NC/NHC exhibits remarkable performance for both ORR ( E 1/2 = 0.87 V) and OER ( E j = 10 mA cm-2 = 1.54 V), enabling superior peak power density and long-term charging-discharging stability in both liquid-state ZAB (184.3 mW cm −2 and 1350 cycles) and flexible all-solid-state ZAB (61.4 mW cm −2 and 195 cycles). The high durability of BIEF in the core–shell hetero-nanostructured electrocatalyst is crucial for long-term highly-active oxygen electrocatalysis in ZAB.
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 Chemistry B
·
2023
·Vol. 11
·期 19
·4274-4286
·
IF 7
Jingge Zhang,Enna Ha,Danyang Li,Shuqing He,Luyang Wang,Shaolong Kuang,Junqing Hu
Nanozymes mediated catalytic therapy can produce toxic reactive oxygen species (ROS) and destroy the metabolic balance of tumor cells, providing a new direction for cancer treatment. However, the catalytic efficiency of a single nanozyme is limited by the complexity of the tumor microenvironment (hypoxia, GSH overexpression, etc.). In order to overcome these problems, we designed flower-like Co-doped FeSe2 (Co–FeSe2) nanozymes by a simple wet chemistry method. Co–FeSe2 nanozymes not only exhibit high POD and OXD-mimicking activities for facile kinetics, but also effectively consume over-expressed glutathione (GSH), inhibiting the consumption of generated ROS and destroying the metabolic balance of the tumor microenvironment. These catalytic reactions trigger cell death through apoptosis and ferroptosis dual pathways. More importantly, under the NIR II laser irradiation, the catalytic activities of Co–FeSe2 nanozymes are boosted, confirming the photothermal and catalytic synergistic tumor therapy. This study takes advantage of self-cascading engineering that offers new ideas for designing efficient redox nanozymes and promoting their clinical translation.
研究领域:
癌症治疗
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材料科学
·
纳米医学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2022
·
IF 11.021
Qiqin Liang,Jingjing Zhang,Xiaosi Qi,Lei Wang,Junfei Ding,Xiu Gong,Jingliang Yang,Yanli Chen,Yunpeng Qu,Qiong Peng,Wei Zhong
The selenylation/sulfuration of magnetic precursor brings about the great challenges to construct magnetic transition metal dichalcogenides (TMDs)-based multicomponent nanocomposites (MCNCs), which greatly hinders the improvements in magnetic loss ability and impedance matching characteristic. Theoretically speaking, the addition of carbon layer is conducive to protect the magnetic nanoparticles, optimize the impedance matching, strengthen the interfacial polarization and magnetic loss abilities, and so on. In order to verify these ideas, herein, we elaborately designed and produced core@shell ZnSe/FeSe 2 @MoSe 2 and core@shell@shell ZnFe 2 O 4 @C@MoSe 2 flower-like MCNCs. The results of comparative study indicated that the as-prepared ZnSe/FeSe 2 @MoSe 2 and ZnFe 2 O 4 @C@MoSe 2 with the different MoSe 2 contents and flower-like geometrical morphologies could be synthesized by regulating the amounts of Mo and Se sources. And the introduction of carbon layer not only effectively inhibited the selenylation of ZnFe 2 O 4 precursor, but also greatly improved the impedance matching characteristic, dielectric and magnetic loss capabilities. The obtained ZnFe 2 O 4 @C@MoSe 2 MCNCs presented the excellent comprehensive microwave absorption properties (MAPs) including strong absorption capability, broad frequency bandwidth and thin matching thickness. Therefore, our findings not only presented a simple and viable route to produce magnetic TMDs-based MCNCs, but also provided an effective strategy to boost their comprehensive MAPs.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 8
·3828-3841
·
IF 10.733
Jia Jia,Qiqi Zhang,Zong Li,Xiaoyun Hu,Enzhou Liu,Jun Fan
Two-dimensional (2D) layered heterostructures have attracted substantial attention in recent years as promising platforms for the direct conversion of renewable solar energy to chemical fuels due to their unique optoelectronic, transport, and interfacial properties. The rational structural design and tailored synthesis of semiconductor heterojunctions are critical to explore and achieve well-defined photocatalytic systems. Herein, we propose a design strategy for ultrathin 2D FeS–FeSe2 lateral heterostructures to achieve rapid spatial migration of photogenerated charge carriers and to facilitate favorable kinetics of target surface redox reactions for photocatalysis. The resultant composites have superior photocatalytic H2 generation activity (2071.1 μmol g−1 h−1) without any noble metal as a cocatalyst under sunlight and show marked photocatalytic durability after a continuous test for 20 h under alkaline conditions. In particular, we have found, for the first time, that the irradiated FeS–FeSe2 is active for producing H2O2 by the two-electron reduction of O2 in the photocatalytic degradation process of phenol solution. A series of mechanistic studies on photocatalysis clearly demonstrates that the pronounced photocatalytic performance of the 2D lateral heterojunction nanosheets could be a result of increased carrier density, longer electron lifetime and higher hole injection efficiency as well as a stepwise two-electron/two-step reduction pathway.
研究领域:
材料科学
·
纳米技术
·
光催化
·
可再生能源
✓ 已验证
DOI
高影响因子
Biomaterials Science
·
2021
·Vol. 9
·期 16
·5542-5550
·
IF 6.843
Lan Fang,Jie Wang,Xueliang Ouyang,Binbin Liang,Liying Zhao,Dechun Huang,Dawei Deng
Multi-functionality has been a constant pursuit in the development of next-generation drug carriers, as it will bring the potential for combination therapy by integrating diverse therapeutic modes. In this work, FeSe2 nanosheets (NSs) have been prepared as a bifunctional platform to investigate their use in synergistic cancer therapy. Bifunctional FeSe2 NSs exhibit exceptional Fenton-like activity that generates cytotoxic hydroxyl radical (˙OH) and strong broad photothermal performance including the second-infrared (NIR-II) spectral range, wherein the ˙OH production can be enhanced by NIR-II light irradiation. Furthermore, doxorubicin (DOX) was conjugated onto NSs via a pH-responsive hydrazone bond to achieve preferential drug release in an acidic microenvironment. Upon intratumoral administration, these bifunctional drug-carrying FeSe2 NSs showed an NIR-II irradiation-reinforced strong tumor suppression effect, and no obvious toxicity to normal tissues was observed. This study provides a new paradigm for the design of advanced drug carriers relying on their inherent physicochemical properties.
研究领域:
纳米技术
·
癌症治疗
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光热治疗
·
药物递送系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xu Zhang,Wei Zhang,Lang Ran,Xiangyu Wang,Binze Zou,Lincheng Zhou
A novel non-woven carbon fiber sheet-supported FeSe 2 and MoS 2 -loaded Fenton catalyst (MoS 2 @FeSe 2 @CFS) was synthesized by a two-step hydrothermal process. The MoS 2 @FeSe 2 @CFS exhibited an excellent performance on hydrogen peroxide (H 2 O 2 ) activation at different conditions. Removal efficiency of methylene blue (MB) reached 99.7% within 20 min and the rate constant was higher than those of the most reported iron-containing catalyst/H 2 O 2 systems for MB degradation. The possible activation mechanism of H 2 O 2 by MoS 2 @FeSe 2 @CFS in heterogeneous system was proposed·H 2 O 2 was activated to ·OH by Fe 2+ , and generated Fe 3+ was reduced to Fe 2+ by Mo 4+ . Besides, MoS 2 has great adsorption performance and can aggregate MB near the catalyst, shortening the mass transfer distance. Therefore, the heterogeneous Fenton catalyst MoS 2 @FeSe 2 @CFS has excellent catalytic property. Notably, it was discovered that S might participate in the Fe 3+ /Fe 2+ cycle, which has not been reported in literature. Moreover, MoS 2 @FeSe 2 @CFS have good long-term stability and repeatability because of its high strength and chemical durability. Overall, this work expands the environmental application of iron-containing catalyst and provides a promising heterogeneous Fenton system for removal of contaminants from water.
研究领域:
环境科学
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材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xin Liu,Shikai Wang,Jinghao Cao,Jiahui Yu,Jixian Dong,Yutong Zhao,Fuping Zhao,Dafeng Zhang,Xipeng Pu
Rational design of the morphology and heterojunction to accelerate the separation of electron-hole pairs has played an indispensable role in improving the photocatalytic hydrogen evolution . ZnIn 2 S 4 (ZIS) has aroused considerable attention in solar-to-chemical energy conversion due to its remarkable photoelectrical properties and relatively negative energy band, whereas it still suffers from the severe photogenerated carrier recombination and catalyst aggregation. Herein, guided by density functional theory calculations, the constructed FeSe 2 @ZnIn 2 S 4 (FS@ZIS) heterojunction model has a hydrogen Gibbs free energy closer to zero compared with pure ZIS and FS, which is beneficial for hydrogen adsorption and desorption on the photocatalyst surface. Therefore, a novel cross-like core–shell FS@ZIS Step-scheme (S-scheme) heterojunction was synthesized successfully by in-situ growing ZIS nanosheets on the surface of cross-like FS. The structure with cross-like core–shell morphology not only inhibits the agglomeration of ZIS to increase specific surface area , but also provides a tight interface with S-scheme heterojunction. Moreover, the S-scheme heterojunction with a tight interface can effectively separate electron-hole pairs, leaving photoinduced charges with higher potentials. Furthermore, FS@ZIS-20 possesses exceptional photothermal capabilities, enabling the conversion of optical energy from visible and near infrared light to heat, thereby further enhancing the photocatalysis reaction. As a result, the cross-like core–shell FS@ZIS S-scheme heterojunction exhibits an excellent photocatalytic hydrogen evolution rate (7.640 mmol g −1 h −1 ), which is 24 times higher than that of pure ZIS (0.319 mmol g −1 h −1 ) under visible and near infrared light. Furthermore, employing more in-depth density functional theory calculations further investigates the charge transfer pathway of the FS@ZIS S-scheme heterojunction. This work provides insights into the construction of S-scheme heterojunctions with core–shell structure and photothermal effect for photocatalytic evolution hydrogen.
研究领域:
材料科学
·
光催化
·
纳米技术
·
能源转换
·
理论化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small Methods
·
2021
·Vol. 5
·期 9
·2100437
·
IF 14.188
Xiaoyu Gao,Yixi Kuai,Zhixin Xu,Yongjie Cao,Nan Wang,Shin-ichi Hirano,Yanna Nuli,Jiulin Wang,Jun Yang
Metal selenides have attracted increasing attention recently as anodes for sodium-ion batteries (SIBs) because of their large capacities, high electric conductivity, as well as environmental benignity. However, the application of metal selenides is hindered by the huge volume variation, which causes electrode structure devastation and the consequent degrading cycling stability and rate capability. To overcome the aforementioned obstacles, herein, SnSe 2 /FeSe 2 nanocubes capsulated in nitrogen-doped carbon (SFS@NC) are fabricated via a facile co-precipitation method, followed by poly-dopamine wrapping and one-step selenization/carbonization procedure. The most remarkable feature of SFS@NC is the ultra-stability under high current density while delivering a large capacity. The synergistic effect of dual selenide components and core-shell architecture mitigates the volume effect, alleviates the agglomeration of nanoparticles, and further improves the electric conductivity. The as-prepared SFS@NC nanocubes present a high capacity of 408.1 mAh g −1 after 1200 cycles at 6 A g −1 , corresponding to an 85.3% retention, and can achieve a capacity of 345.0 mAh g −1 at an extremely high current density of 20 A g −1 . The outstanding performance of SFS@NC may provide a hint to future material structure design strategy, and promote further developments and applications of SIBs.
研究领域:
材料科学
·
能量存储
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Xiaofei Lei,Xuan Xie,Kanjun Sun,Sitong Liu,Tianyu Hou,Hui Peng,Guofu Ma
Transition metal selenides embedded into a nitrogen, sulfur co-doped carbon materials (TMS@NSC) are promising electrocatalysts to effectively address the sluggish kinetics of oxygen evolution reaction (OER). However, the OER catalytic activity of single metal TMS@NSC is still limited by insufficient active sites. Hence, FeSe 2 and CoSe 2 nanoparticles self-generated and confined in N, S-doped porous carbon (FeSe 2 /CoSe 2 @NSC) catalyst has been synthesized by in-situ polymerization and the subsequent low temperature selenization strategy, aiming to increase the active sites of TMS@NSC. The hybridized FeSe 2 /CoSe 2 @NSC catalyst has excellent OER catalytic activity and good durability in alkaline media, which only requiring an overpotential as low as 278 mV to drive a current density of 10 mA cm −2 , outperforming most recently reported selenide catalysts and commercial RuO 2 catalysts. The high catalytic activity of FeSe 2 /CoSe 2 @NSC catalyst is attributed to the rapid electron transfer between FeSe 2 and CoSe 2 in the unique N, S-doped graphene nanosheets, which effectively inhibits the aggregation of nanoparticles, fully exposes the active sites and provides pathway for oxygen release during the OER process. Moreover, the overall water splitting device assembled with FeSe 2 /CoSe 2 @NSC catalyst showed low overpotential of 1.57 V. This study provides a feasible strategy for the design of high active and stable TMS@NSC catalysts for OER and other energy conversion applications.
研究领域:
材料科学
·
电化学
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Honghong Fan,Zhifang Yang,Zhiwen Cheng,Farzaneh Bahmani,Jingping Zhang,Xing-Long Wu
Metal selenides have emerged as promising Na-storage anode materials owing to their substantial theoretical capacity and high cost-effectiveness. However, the application of metal selenides is hindered by inferior electronic conductivity, huge volume variation, and sluggish kinetics of ionic migration. In response to these challenges, herein, a hierarchical hollow tube consisting of FeSe 2 nanosheets and Se quantum dots anchored within a carbon skeleton (HT-FeSe 2 /Se/C) is strategically engineered and synthesized. The most remarkable feature of HT-FeSe 2 /Se/C is the introduction of Se quantum dots, which could lead to high electron density near the Fermi level and significantly enhance the overall charge transfer capability of the electrode. Moreover, the distinctive hollow tubular structure enveloped by the carbon skeleton endows the HT-FeSe 2 /Se/C anode with robust structural stability and fast surface-controlled Na-storage kinetics. Consequently, the as-synthesized HT-FeSe 2 /Se/C demonstrates a reversible capacity of 253.5 mAh/g at a current density of 5 A/g and a high specific capacity of 343.9 mAh/g at 1 A/g after 100 cycles in sodium-ion batteries (SIBs). Furthermore, a full cell is assembled with HT-FeSe 2 /Se/C as the anode, and a vanadium-based cathode (Na 3 V 2 (PO 4 ) 2 O 2 F), showcasing a high specific capacity of 118.1 mAh/g at 2 A/g. The excellent performance of HT-FeSe 2 /Se/C may hint at future material design strategies and advance the development and application of SIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Jin Liu,Liexiang Ren,Jujie Luo,Huitao Li
The low capacity of negative electrode materials for supercapacitors limits their practical applications. In this study, the bimetallic selenides Bi 2 Se 3 /FeSe 2 were efficiently prepared by a convenient one-step microwave method. The attributes of nanoparticles such as surface morphology, crystal structure, elemental valence, and distribution regions were verified by a series of characterization tools. The composite electrode exhibits high electrochemical performance in the 1.2 V negative potential window. The capacitance of the Bi 2 Se 3 /FeSe 2 electrode is 274 mAh g −1 at 1 A g −1 . These results indicate that Bi 2 Se 3 /FeSe 2 holds great potential for supercapacitor anode materials. In particular, the asymmetric water-based supercapacitor dual-electrode device (NiSe/NiTe 2 //Bi 2 Se 3 /FeSe 2 ) shows an impressive power/energy density of 56.25 Wh kg −1 at 774.67 W kg −1 . The capacitance of ASC is reduced by 20.10 % and the coulomb efficiency is maintained at 99.45 % over 3000 cycles.
研究领域:
材料科学
·
电化学
✓ 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）