JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shaosheng Rao,Yangyang Sun,Juan Xie,Chenglong Chen,Chuang Zhi,Rong Ma,Qinqin Liu,Juan Yang
Although photocatalytic disinfection can avoid secondary pollution and other shortcomings compared to traditional disinfection methods, its development is seriously hindered by poor charge separation and transfer efficiency. Herein, we design a Zn-NC (single Zn atoms embedded in nitrogen-doped carbon) bridged ZnO/C 3 N 4 Z-scheme heterojunction (ZnO/Zn-NC/C 3 N 4 ) with robust interface contact by a multi-interfacial engineering strategy to achieve highly efficient separation and transfer of charge. Experimental and theoretical analyses demonstrate that the tightly integrated interface and excellent electrical conductivity of Zn-NC electron bridges ensure effective transfer of photogenerated charge carriers. Compared to ZnO/C 3 N 4 , the introduction of Zn-NC electron bridges induces charge rearrangement at the interface, generating a strong built-in electric field in the ZnO/Zn-NC/C 3 N 4 Z-scheme heterojunction to facilitate the separation and transfer of photogenerated charge carriers. Furthermore, Zn-NC electron bridges effectively promote the adsorption and activation of oxygen on the surface of ZnO/Zn-NC/C 3 N 4 , enhancing the generation of reactive oxygen species for rapid bacteria elimination in water. Consequently, the ZnO/Zn-NC/C 3 N 4 Z-scheme heterojunction, at a concentration of 100 ppm, achieves 99.9 % antibacterial efficiency against methicillin-resistant Staphylococcus aureus , Staphylococcus aureus , and Escherichia coli at a bacterial concentration of ∼ 10 7 CFU/mL under AM 1.5G simulated sunlight irradiation for 60 min, which is approximately 1.05 times higher than that of ZnO/C 3 N 4 . Moreover, ZnO/Zn-NC/C 3 N 4 maintains a 99.9 % bactericidal efficiency for natural water treatment using a homemade microreactor, demonstrating its potential for water disinfection.
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Jiaheng Wang,Fengxiang Yang,YuChen Wang,Yang Zhao,Wei Wang,Anchun Fang,Songyuan Wu,Qingwei Wang,Jiarui Li,Jiaxu Gong,Yatang Dai
It remains an urgent task to design electrocatalysts with fast oxygen evolution reaction (OER) kinetics and enriched active sites for flexible Zn-air batteries. In this paper, a structure engineering strategy is proposed to design an electrocatalyst with a heterostructure comprising Co@NC and NiMo-LDH on carbon cloth, which serves as an air electrode for a quasi-solid-state Zn-air battery. This unique heterostructure significantly enhances electrocatalytic activity, producing low OER overpotentials of 198 mV at 10 mA cm -2 . Moreover, the assembled rechargeable Zn-air battery exhibits a high peak density and long cycle stability. Density functional theory calculations indicate that the multimetallic heterostructure induced synergistic and electronic coupling effects among the metal active sites, facilitating rapid ion and electron transport during the OER process. In addition, the migration of oxygen species at the Ni and Mo sites reduces the reaction potential barrier, resulting in a low OER overpotential of 160 mV.
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高影响因子
Nanoscale
·
2024
·Vol. 16
·期 37
·17412-17418
·
IF 5.8
Xiaofen Xiao,Deqiang Wang,Guangyi Xu,Zhuxiang Zhang,Jun Li,Shun Wang,Yifei Yuan,Chuangang Hu,Huile Jin
It is difficult to achieve fast kinetics of Zn2+(H2O)6 desolvation as well as HER inertia at the same electrolyte/Zn interface during long-term cycling of Zn plating/stripping in aqueous Zn-ion batteries. Herein, an effective interface construction strategy with hydrophilic transition metal oxides was proposed to achieve that balance using a CeO2 layer coating. The hydrophilic CeO2 layer can bring a balance between improving the access to the anode surface for Zn2+(H2O)6 electrolyte ions, providing uniform Zn2+ nucleation sites and HER inertia. What's more, Zn corrosion can be significantly inhibited benefiting from this coating layer. The efficiency of aqueous Zn-ion batteries showed a great enhancement. Ultra-long plating/stripping stability up to 1600 h and excellent recovery (returning to 0.5 from 20 mA cm−2) for the symmetric CeO2@Zn system were observed. A full cell with the MnO2 cathode (CeO2@Zn//MnO2) with good reversibility and stability (∼600 cycles) was fabricated for practical application. Our work provides a fundamental understanding and an essential solution to deal with the balance between rapid desolvation and inhibition of the hydrogen evolution reaction, which is important for promoting the practical application of rechargeable Zn batteries.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinyang Wang,Xinyu Luo,Rui Li,Yu Chang,Jianbiao Peng,Weilai Wang,Haijin Liu,Guangxuan Yan,Pengkun Wei,Zhiguo Cao
Florfenicol (FLO) is a broad-spectrum halogenated antibiotic (containing F and Cl atoms), and the discharged FLO in wastewater exhibits potential biotoxicity. Peroxymonosulfate (PMS) activation can generate reactive oxygen species (ROSs) to realize efficient degradation of organic pollutants. Herein, Zn-substituted Co 3 O 4 (Zn x Co) catalysts were prepared and applied in PMS activation for FLO degradation. The physicochemical properties were systematically studied by combining experiments and density functional theory (DFT) calculation. The Zn partial substitution induced electron rearrangement and promoted oxygen vacancy (OV) formation in Co 3 O 4 . Zn 0.03 Co catalyst exhibited superior FLO removal, achieving a higher reaction rate of 0.112 min −1 than Co 3 O 4 (0.053 min −1 ). The FLO degradation was highly dependent on the factors of PMS/Zn 0.03 Co/FLO dosage, temperature, initial pH, and coexisting inorganic anions. The Zn 0.03 Co also displayed outstanding performance in PMS activation for degradation of various typical organic pollutants. Electron paramagnetic resonance (EPR) spectra and quenching experiments indicated that both radical species ( · OH , SO 4 · - , and · O 2 - ) and nonradical species ( 1 O 2 ) contribute to FLO removal. The redox cycle of Co 3+ /Co 2+ and OVs played an essential role in PMS activation. The electron structure of FLO and parameters of PMS adsorbed on Zn x Co were calculated. The longer length of Co O and O O bonds for the adsorbed PMS could enhance its activation to generate ROSs. The intermediates were detected, and five degradation pathways were proposed. The acute and chronic toxicities of intermediates suggested that the dechlorination process is important for the toxicity attenuation of FLO. This study clarified the performance enhancement mechanism of Zn substitution on FLO degradation by PMS activation using Co 3 O 4 based catalyst, which favors the development of PMS-based advanced oxidation processes for wastewater treatment.
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高影响因子
MOLECULES
·
2024
·Vol. 29
·期 12
·2755
·
IF 4.2
Jing Ru,Yi-Xuan Shi,Qing-Yun Yang,Teng Li,Hai-Ying Wang,Fan Cao,Qiang Guo,Yan-Lan Wang
2,6-pyridine dicarboxylic acid (DPA) is an exceptional biomarker of notorious anthrax spores. Therefore, the rapid, sensitive, and selective quantitative detection of DPA is extremely significant and urgent. This paper reports a Zn(II) metal–organic framework with the formula of {[Zn6(NDA)6(DPBT)3] 2H2O·3DMF}n(MOF-1), which consists of 2,6-naphthalenedicarboxylic acid (2,6-NDA), 4,7-di(4-pyridyl)-2,1,3-benzothiadiazole (DPBT), and Zn(II) ions. Structural analysis indicated that MOF-1 is a three-dimensional (3D) network which crystallized in the monoclinic system with theC2/c space group, revealing high pH, solvent, and thermal stability. Luminescence sensing studies demonstrated that MOF-1 had the potential to be a highly selective, sensitive, and recyclable fluorescence sensor for the identification of DPA. Furthermore, fluorescent test paper was made to detect DPA promptly with color changes. The enhancement mechanism was established by the hydrogen-bonding interaction and photoinduced electron transfer transition between MOF-1 and DPA molecules.
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高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Lin Yang,Ying-Jie Zhu,Han-Ping Yu,Zhong-Yi Wang,Long Cheng,Dan-Dan Li,Jingchao Tao,Guo He,Heng Li
The rampant dendrites growth caused by uncontrolled deposition of Zn 2+ ions at Zn metal anode poses a significant obstacle to the practical applications of aqueous zinc-ion batteries (ZIBs). Herein, an ultrathin (5 µm) aramid nanofiber (ANF) separator is reported to enhance the Zn anode stability and the ZIB energy density. Through systematic experimental studies and DFT simulations, it is demonstrated that the ANF separator with unique surface polarity can modify the solvation configuration, facilitate desolvation, and regulate the deposition orientation of Zn 2+ ions. Consequently, the Zn anode with the ANF separator demonstrates an 85-fold increase in running time beyond 850 h compared with the conventional glass fiber separator at 5 mA cm −2 /2.5 mAh cm −2 . Even under the harsh depth of discharge conditions of 50% and 80%, the Zn anodes still sustain extended cycling periods of over 475 and 200 h, respectively. As pairing this ANF separator with thin Zn anode and high-areal-capacity Mn 2.5 V 10 O 24 ∙5.9H 2 O cathode in a low negative capacity/positive capacity ratio (2.64) full cell, superior gravimetric/volumetric energy density (129.2 Wh kg −1 /142.5 Wh L −1 ) is achieved, far surpassing majority of the ZIB counterparts reported in the literature. This work offers a promising ultrathin separator for promoting the utilization of energy-dense aqueous ZIBs.
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2024
·
IF 3.9
Xu Mengxia,Wu Rao,Wang Shengqian,Xu Hualan,Zhong Shengliang
The preparation of coordination polymers with good room temperature phosphorescence is the focus of current research. In this paper, zinc and cadmium were used as metal ions and 2,3-pyridinedicarboxylic acid (H 2 L = 2,3-pyridinedicarboxylic acid) was used as organic ligands to successfully synthesize Cd (II) homometallic [CdL]·H 2 O and Zn(II)Cd(II) heterometallic [ZnCdL 2 ]·DMF·5H 2 O coordination polymers microstructures. In addition, morphology, powder X-ray diffraction (PXRD), infrared spectroscopy (IR), elemental analyses, thermogravimetric analysis (TGA) and their luminescence properties were studied. Cd-CP is a micron-sized spherical structure, while Zn/Cd-CP is a flower-like structure formed by the accumulation of sheets. The results show that Cd(II) homo- and Zn(II)Cd(II) heterometallic coordination polymers have quantum yields of 10.05% and 8.54%, respectively. It is worth noting that the lifetime of Cd-CP is 124.62 ms, while the lifetime of Zn/Cd-CP is significantly extended to 363.09 ms after doping with metal ion Zn 2+ . The phosphorescent lifetime of coordination polymers was improved by the heterometallic doping strategy, which provided a new idea and method for the preparation of coordination polymers with long-lived room temperature phosphorescent properties. In addition, the two coordination polymers exhibited blue and cyan fluorescence at 365 nm UV light, respectively, and a green afterglow of about 2 s could be observed with the naked eye when the UV lamp was turned off.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Huaiyu Wang,Yanjun Cai,Zhiran Zhang,Yu Liu,Rui Zhang,Ruiqiang Huo,Ruiyao Wu,Huiyun Cheng,Jiao Yin,Jian Yin,Zhi Su,Hui Zhu
Zinc-ion hybrid supercapacitors (ZHSCs) not only combines the advantages of batteries and supercapacitors, but also features low cost and environmental friendliness. However, the poor active site density and sluggish diffusion kinetics of carbon cathode brings about low capacity and terrible rate capability of ZHSCs. In this work, an activation assisted template procedure is proposed to synthesize nitrogen and phosphorous dual-doped hierarchical porous carbon (NP-HPC), where phytic acid acts as both doing precursor and activation medium. Benefitting from the synergetic modulation in porosities and surface functionalities, the optimized NP-HPC-2 delivers high capacity (394.51 F g −1 at 0.2 A g −1 ), superior rate capability (200.21 F g −1 at 50 A g −1 ) and excellent durability (95.7 % retention over 10,000 cycles). Consequently, the assembled ZHSC exhibits a remarkable energy density of 140 Wh kg −1 and an impressive power density of 40 kW kg −1 . Density functional theory (DFT) calculations revealed that the introduction of P doping adjust the distribution of local charge density of edged N with a lowered adsorption energy barrier for Zn 2+ storage. This work not only sheds light on the integrative effect of structure modulation and functionality regulation but also provide a feasible solution for the preparation of carbon cathodes towards high energy and power density ZHSCs.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Yuchen Li,Muqi Chang,Penghao Chai,Qiulong Guan,Jianghuan Li,Lijie Li,Lixia Bao,Wensheng Deng,Jiong Peng,Xin Li
Enhancing Zn 2+ storage necessitates the meticulous design of carbon-based cathodes with specific attributes, notably substantial nitrogen doping and high surface area. However, synthesizing materials that embody both advantages persists as a considerable obstacle. Herein, we introduce a strategy for synthesizing self-assembled supramolecular crystal framework carbonization-activated high nitrogen doping hierarchical porous carbon (H-NPC) with a specific surface area of 2202.96 m 2 g⁻ 1 and a nitrogen doping level of 12.45 at.%, providing a plethora of physical and chemical adsorption sites for Zn 2+ storage. The resulting H-NPC exhibits a notable capacity of 256.7 mAh g −1 at 0.5 A g −1 , achieving a maximum energy density of 213 Wh kg −1 at 450 W kg −1 power density, alongside an extended service life with 91.4 % capacity retention over 10,000 cycles. Density functional theory calculations reveal the role of high nitrogen doping in enhancing the reversible adsorption/desorption of Zn 2+ , augmenting H-NPC's electrical conductivity, electron density at zincophilic active sites, and reducing the energy barrier for Zn 2+ adsorption. This study emphasizes the crucial role of incorporating large specific surface areas and abundant nitrogen atoms into carbon electrodes with the aim of innovating high-efficiency aqueous zinc ion capacitor systems and provides a novel idea for designing new carbon-based materials.
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高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Ruixin Sun,Jinxing Zhao,Ouyang Lin,Yu Li,Xiulin Xie,Wentao Niu,Zhe Yin,Aiwei Tang
I–III–VI-group semiconductor nanocrystals (NCs) have received extensive attention for use in quantum-dot light-emitting diodes (QLEDs) due to their nontoxic nature, large-scale tunable emission wavelength and straightforward synthesis. At present, research on ternary CuGaSe2 (CGSe) NCs is gradually being carried out. CGSe-based semiconductor NCs with a wide and tunable bandgap exhibit significant promise for efficient QLEDs preparation. In order to improve their functionality, stability and dispersion, Zn2+ was introduced into CGSe cores, which were coated with wide-band-gap ZnS to form Cu–Ga–Zn–Se/ZnS NCs to improve their luminescence performance. In this work, a series of Cu–Ga–Zn–Se/ZnS NCs with tunable emission from 603 to 524 nm and a photoluminescence quantum yield (PLQY) of 96% could be acquired by precisely controlling the non-stoichiometric Cu : Ga molar ratios in the synthesis of the CGZSe cores. Furthermore, green luminescent CGZSe/ZnS NCs were obtained by adjusting the amount of crucial Zn precursors during nucleation and shell formation. The green QLEDs based on these NCs show a high external quantum efficiency of 5.8% and a high brightness of 7016 cd m−2. This work reveals new possibilities for the design of novel and efficient Cd-free green QLEDs.
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高影响因子
FUEL
·
2025
·
IF 7.5
Kejie Zhang,Weijian Hua,Renhui Ruan,Baochong Cui,Mingxing Su,Xuebin Wang,Houzhang Tan
The electrochemical reduction of CO 2 into valuable chemicals presents a promising CO 2 mitigation technology. However, rapid preparation of efficient and stable catalysts remains a challenge. The “droplet-to-particle” method allows for the rapid synthesis of catalysts with precise elemental composition control. In this study, Cu-Zn bimetallic nanoparticle catalysts with phase-separated structures and varying elemental compositions were prepared using this method. The formation process of the catalysts was analyzed, and their performance in CO 2 electroreduction was investigated. Aerosol dynamics simulation revealed that the formation process of the catalyst particles involves the transformation from a single droplet to a single particle. TEM observations showed hollow regions in the center of the catalyst particles, attributed to the rapid evaporation of the droplets, which led to the formation of hollow particles in some cases. This also explains why some catalyst particles had a larger actual diameter than the theoretical solid particle size. By calculating the residence time of droplets in the reactor, it was found that the transformation from droplets to particles occurred within approximately 4.37 s, indicating the rapid formation of catalyst particles. On the other hand, electrochemical experiments demonstrated that when the Cu/Zn molar ratio was 2:8, the faraday efficiency (FE) of CO reached up to 73 % at −1.1 V vs. RHE, with stable performance over 8 h of operation. Density functional theory (DFT) calculations indicated that the introduction of Zn lowered the energy barrier for the rate-determining step of *COOH formation, promoting the generation of CO. This study provides an in-depth investigation into the “droplet-to-particle” catalyst synthesis process, which is characterized by simplicity, rapidity, ease of control, and cost-effectiveness. These features offer an effective strategy for the industrial application of CO 2 electroreduction.
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高影响因子
GREEN CHEMISTRY
·
2025
·Vol. 27
·期 8
·2276-2285
·
IF 9.2
Lixia Wang,Jiasui Huang,Jia Huang,Bowen Yao,Aling Zhou,Zhiyang Huang,Tayirjan Taylor Isimjan,Bao Wang,Xiulin Yang
Zinc–air batteries (ZABs) are considered a promising energy storage technology due to their high energy density and environmental friendliness. However, the development of efficient and durable oxygen reduction reaction (ORR) catalysts remains a challenge. Herein, we report the synthesis of a highly efficient CoP/Cu3P@NC catalyst using a Zn-MOF template, which was transformed into N- and C-doped bimetallic phosphides via high-temperature phosphating. The CoP/Cu3P@NC-based ZAB exhibits remarkable performance with an open-circuit voltage of 1.50 V, a peak power density of 215 mW cm−2, and a specific capacity of 691 mA h gzn−1, outperforming conventional Pt/C-based ZABs. The catalyst maintained 93.5% of its initial activity after 300 h of cycling, demonstrating its excellent long-term stability. Furthermore, CoP/Cu3P@NC was applied in flexible ZABs, achieving a power density of 74 mW cm−2 and showing stable performance under various bending conditions. The superior performance is attributed to the synergistic effects of Co and Cu, optimized structural properties, and high porosity, enhancing mass transfer and oxygen activation. These results suggest that CoP/Cu3P@NC is a highly promising ORR catalyst for next-generation ZABs, offering both high efficiency and durability in flexible and conventional energy storage applications.
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高影响因子
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