CERAMICS INTERNATIONAL
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2019
·Vol. 45
·期 16
·19635-19643
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IF 3.45
Zihao Song,Weigen Chen,He Zhang,Yanqiong Li,Wen Zeng,Sirui Tang,Chengzhi Zhu
Acetylene (C 2 H 2 ) gas concentration is a key parameter in transformer monitoring. In current work, the selective acetylene sensors which based on flower-like ZnO structures with NiO nanoparticles were successfully fabricated. The NiO–ZnO composites were synthesized by two-step hydrothermal method . And various of characterization analyses had been applied to the exploration of crystal structure and the p-n heterojunction . According to the systematic gas sensitivity tests, the response of NiO–ZnO (5%) to 50 ppm C 2 H 2 was 15.23 at 200 °C whereas the response of pure ZnO was 4.1 in the same condition. In addition, the response value of NiO–ZnO (5%) to 50 ppm C 2 H 2 was 3.6 times to 50 ppm H 2 . Such a good gas-sensing property of NiO–ZnO composites is due to p-n heterojunction and high catalytic activity of NiO.
研究领域:
材料科学
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传感器技术
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无机化学
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纳米材料
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电力设备监测
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DOI
高影响因子
SOLID STATE IONICS
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2018
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IF 2.751
Juan Shi,Hougao Xiong,Yifu Yang,Huixia Shao
Developing solid electrolyte for alkali metal batteries is of important significance. A gel polymer electrolyte (GPE) based on the porous composite polymer membrane formed by blending of PEO , PMMA and P(VDF-HFP) is prepared, and the effects of the addition of nano-sized oxide fillers (Al 2 O 3 , TiO 2 , SiO 2 ) on the characteristics of the composite GPEs are investigated. The composite GPE with filling of SiO 2 has more amorphous region and porous structure which can hold more liquid electrolyte without leakage, so the composite GPE can provide high ionic conductivity at room temperature and large Li + or Na + transport number. Furthermore, the composite GPE possesses a large electrochemical window, superior thermal stability and excellent interfacial stability. The composite GPEs can be applied in a variety of lithium and sodium metal batteries and exhibit superior cycling stability and rate performance.
研究领域:
能源材料
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电化学
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高分子科学
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电池技术
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固态电解质
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Green Energy & Environment
·
2020
·Vol. 6
·期 6
·866-874
·
IF 6.395
Menglei Yuan,Yu Sun,Yong Yang,Jingxian Zhang,Sobia Dipazir,Tongkun Zhao,Shuwei Li,Yongbing Xie,He Zhao,Zhanjun Liu,Guangjin Zhang
Oxygen evolution reaction (OER) as the foremost stumbling block to generate cost-effective clean fuels has received extensive attention in recent years. But, it still maintains the challenge to manipulate the geometric and electronic structure during single reaction process under the same conditions. Herein, we report a simple self-template strategy to generate honeycomb-like Ni 2 P/N,P–C hybrids with preferred electronic architecture. Experiments coupled with theoretical results revealed that the synthesized catalyst has two characteristics: firstly, the unique honeycomb-like morphology not only enables the fully utilization of catalytic active sites but also optimizes the mass/electron transportation pathway, which favor the diffusion of electrolyte to accessible active sites. Secondly, N,P–C substrate, on the one hand, largely contributes the electronic distribution near Fermi level (E F ) thus boosting its electrical conductivity. On the other hand, the support effect result in the upshift of d-band center and electropositivity of Ni sites, which attenuates the energy barrier for the adsorption of OH − and the formation of ∗OOH. In consequence, the optimized Ni 2 P/N,P–C catalysts feature high electrocatalytic activity towards OER (a low overpotential of 252 mV to achieve 10 mA cm −2 ) and 10 h long-term stability, the outstanding performance is comparable to most of transition metal catalysts. This work gives a innovative tactics for contriving original OER electrocatalysts, inspirng deeper understanding of fabricating catalysts by combining theoretical simulation and experiment design.
研究领域:
材料科学
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电化学
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能量转换
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催化
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纳米材料
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高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Qingmiao Zhang,Hangcheng Yang,Binglin Zhang,Junyao Chang,Xiaozhong Du,Zishang Wang,Guiyin Xu,Lingjie Meng,Yu Chen,Hongkang Wang
Heteroatom doping and carbon coating are essential techniques for improving the conductivity and reaction kinetics of intercalation-type anode materials in lithium-ion batteries. However, it is difficult to achieve heteroatom doping and carbon coating at the same time through simple processes. Here, we propose a simple method to simultaneously achieve carbon-coating and P/S/N triple-doping by introducing polyphosphazene (PZS) as precursor. We first prepare PZS-coated titanium-based metal-organic frameworks (MIL-125), which can be readily converted into phosphorus/sulfur/nitrogen (P/S/N) co-doped carbon-coated titanium dioxide (TiO 2 ) nanocomposites (PSN-C@TiO 2 @C) by simple calcination under an inert atmosphere. The heteroatom doping and carbon hybridization synergistically enhance the conductivity and ion diffusion of the PSN-C@TiO 2 @C, which not only change the local charge density of the nanocomposite, but also generate more active sites. Benefiting from the above advantages, the well-designed PSN-C@TiO 2 @C anode exhibits significantly improved specific capacity and rate performance, maintaining high reversible specific capacities of 272.2 mA h g −1 after 1000 cycles at 1000 mA g −1 and 141.1 mA h g −1 after 2000 cycles at 5000 mA g −1 . This study presents a novel simplified method for multi-element-doping and carbon-coating, which can be generally applied for developing advanced electrode materials for energy storage application.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Guangsheng Dong,Zhida Yang,Binbin Gao,Zihao Zhu,Lu Tao,Wenjun Dong
The unique two-dimensional layered structure and notable theoretical specific capacity of molybdenum disulfide (MoS 2 ) make it highly competitive anode materials for sodium-ion batteries (SIBs). However, its practical utility is hampered by sluggish Na + /electron transport kinetics and substantial volume changes. Herein, the successful synthesis of an ultrafine MoS 2 /CuS heterostructure embedded in a P-doped carbon framework (MoS 2 /CuS@C) is achieved via sulfurization of an octahedral bimetallic Mo/Cu-metal-organic frameworks (MOFs) precursor. The rationale for achieving superior electrochemical performance hinges on an ingenious design: the leverage of p-n heterojunctions within the carbon framework. The p-n heterojunction of ultrafine MoS 2 /CuS can powerfully drive Na + /electron transfer, thus enhancing the reaction kinetics. Concurrently, the uniform confinement of this heterostructure within the MOFs-derived carbon framework not only supplies the mechanical robustness to withstand volume variation but also creates a highly conductive network to boost overall conductivity. Hence, the MoS 2 /CuS@C anode for SIBs exhibits exceptional cycling stability, demonstrating a capacity of 528 mAh g −1 through 3000 prolonged cycles at 10 A g −1 . Furthermore, the MoS 2 /CuS@C//Na 3 V 2 (PO 4 ) 3 full cell achieves a well-maintained capacity of 44.6 mAh g −1 over 500 cycles. This work establishes a design blueprint aimed at developing efficient anodes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 13.2
Jing Su,Tan Li,Xin Liu,Qihui Song,Jianmeng Cen,Zhongyang Luo,Kaige Wang
The valorization of plastic waste via electrocatalytic conversion into value-added chemicals and hydrogen represents a promising sustainable technology, yet is hindered by the lack of efficient and cost-effective bifunctional catalysts. Herein, we develop a hierarchically structured cobalt phosphide nanoflower catalyst anchored on nickel foam (CoP-F@NF) through fluoride-mediated morphology control. Comprehensive characterization confirms the successful synthesis of crystalline CoP nanoflowers with homogeneous elemental distribution. When applied to polyethylene terephthalate (PET) hydrolysate electro-oxidation, CoP-F@NF exhibits exceptional activity, high formic acid selectivity (>95 %) and Faradaic efficiency (>86 %), attributed to synergistic effects of the CoP phase and nanoflower architecture that optimize mass/charge transport (Tafel slope: 110.12 mV dec −1 ). Mechanistic studies reveal the dominant reaction pathway: ethylene glycol → glycolaldehyde → glyoxal → formic acid. Simultaneously, CoP-F@NF demonstrates efficient hydrogen evolution reaction (HER) activity (Tafel slope: 117.7 mV dec −1 ), leveraging PET oxidation to replace energy-intensive oxygen evolution. In an integrated two-electrode system, CoP-F@NF achieves concurrent formic acid production (FE: >92 %, selectivity: >92 % at 2.0 V) and H₂ generation with superior stability over five cycles. Control experiments with CoO-F@NF and density functional theory calculations reveal that P-modulation elevates the Co d-band center (εd = −1.295 eV vs. -1.601 eV for CoO), optimizing intermediate adsorption strength for both anodic oxidation (weakened *CHO-CHO binding) and cathodic HER. This work establishes a noble metal-free route for plastic waste upcycling and green hydrogen production via electronic and morphological catalyst design.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Linlin Wang,Yafei Guo,Wenhui Zhao,Pengfei Wang,Zonglin Liu,Ting-Feng Yi
A unique 3D hierarchical network consisting of 0D carbon dodecahedra and 1D carbon nanotubes is successfully constructed via in-situ growth. • Phosphorus doping serves as a versatile modulator to induce 1D morphology formation and optimize the electronic density of iron active centers. • The optimized N, P co-doped Fe-N-C catalyst exhibits an outstanding half-wave potential of 0.884 V in alkaline media. • The assembled zinc-air battery achieves a remarkable operational lifespan exceeding 1300 h with superior structural integrity. Developing highly efficient and durable non-precious metal electrocatalysts for oxygen reduction reaction (ORR) remains a critical challenge for the practical application of zinc-air batteries (ZABs). Herein, we successfully synthesized a robust N, P-codoped Fe-N-C catalyst featuring a unique 0D/1D intertwined architecture through a phosphorus-induced heteroatom-modulation strategy. By utilizing FePc-encapsulated ZIF-8 as a precursor, the in-situ growth of 1D carbon nanotubes from 0D carbon dodecahedrons was achieved, constructing a 3D hierarchical conductive network. Experimental and mechanistic analyses reveal that P-doping serves as the key morphology director. It not only induces the formation of structural-stable 1D nanotubes to enhance electron transfer but also modulates the electronic density of Fe centers to elevate electro-oxidation resistance. Consequently, the optimized catalyst exhibits a superior half-wave potential (E 1/2 ) of 0.884 V (vs. RHE) in alkaline media. Remarkably, the as-assembled ZAB achieves an exceptional stability of over 1300 h, demonstrating the superior structural integrity and durability of the 0D/1D network. This research offers a strategic design for engineering high-performance and stable Fe-N-C catalysts through synergistic 0D/1D architecture construction. Phosphorus-induced modulation facilitates the in-situ growth of 1D nanotubes from 0D dodecahedrons, constructing an integrated 0D/1D hierarchical Fe-N-C structure. This structural engineering optimizes the electronic environment of Fe sites for enhanced ORR kinetics (E 1/2 = 0.884 V) and endows practical zinc-air batteries with an outstanding stability exceeding 1300 h. Download: Download high-res image (283KB) Download: Download full-size image
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2026
·
IF 8.4
Wenzheng Zhu,Yangyang Wang,Aiyun Hu,Guanyu Wang,Chuanxiang Chen,Hongxun Yang,Yingying Chen
Sodium-ion batteries (SIBs) represent promising alternatives to lithium-ion batteries for grid-scale energy storage owing to abundant sodium reserves. Nevertheless, the large ionic radius of Na + results in sluggish ion diffusion and poor sodium compatibility with graphite, which hinders the development of high-performance SIB anode materials. In this work, N, P co-doped soft-hard carbon nanofiber (PLCFP) are fabricated through electrospinning and subsequent pyrolysis. After systematic carbonization temperature optimization, PLCFP-700 treated at 700 °C delivers a reversible capacity of 339.5 mAh g −1 after 100 cycles at 25 mA g −1 and 224.3 mAh g −1 over 1000 cycles at 500 mA g −1 with outstanding cycling durability. The enhanced electrochemical performance originates from multiple synergistic advantages. N/P co-doping introduces structural defects and widens carbon interlayer spacing to 0.387 nm to facilitate Na + adsorption and intercalation. The one-dimensional nanofiber network accelerates electron transfer and shortens sodium ion diffusion paths. Additionally, the hybrid soft-hard carbon structure suppresses excessive graphitization of petroleum coke and optimizes carbon microcrystalline textures. This study offers a resource-efficient strategy to realize high-value utilization of petroleum coke industrial byproducts and lignin biomass waste, and provides a novel structural design concept for carbon-based anodes in high-performance SIBs.
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高影响因子
Tungsten
·
2026
·
IF 9
Zhang Yan,Qi Zhaoxiang,Fu Dewen,Wang Ying,Zhang Wenjun,Qi Ying,Mi Hongyu,Guo Changyan,Abulizi Xiaokaiti,Guan Qingqing,Yin Shu,Xie Yahong,Dai Bin
The oxygen evolution reaction (OER) remains a major bottleneck in water electrolysis due to its sluggish kinetics, which fundamentally limits the overall efficiency of hydrogen production. In contrast, the urea oxidation reaction (UOR) offers a promising alternative with significantly lower overpotential, thereby reducing energy consumption. However, the development of stable and multifunctional electrocatalysts for simultaneous efficient hydrogen production and wastewater treatment poses a considerable challenge. In this study, a hierarchical amorphous Co-MOF-modified P-SnCoFe-layered double hydroxides (LDHs) heterostructure (denoted as Co-MOF@P-SnCoFe-LDHs) electrocatalyst was developed through a “MOF interfacial anchoring-dual doping electronic reconstruction” strategy, which integrates ZIF-67 Co-MOF with P/Sn co-doped CoFe-LDHs. The optimized catalyst exhibits exceptional bifunctional activity, achieving outstanding UOR performance with potentials of 1.34 and 1.53 V (vs. RHE) to achieve current densities of 10 and 50 mA cm −2 , respectively. For the OER, it requires low overpotentials of 213 mV (1 mol L −1 KOH) and 237 mV (oilfield wastewater) at 10 mA cm −2 . Mechanistic studies reveal that the spatial confinement effect of amorphous Co-MOF enhances chloride corrosion resistance, leading to a 27% improvement in operational stability. Concurrently, π–d conjugation between the imidazole ligands and the Sn–P network facilitates charge transfer, reducing the charge-transfer resistance by 31% ( R ct = 1.98 Ω). Furthermore, the constructed multi-phase interfaces promote the generation of active intermediates at lower applied potentials (1.0–1.1 V vs. RHE). This work provides a rational catalyst design strategy for energy-efficient hydrogen production and wastewater treatment under harsh saline conditions. Graphical abstract Co-MOF@P-SnCoFe-LDH/NF was successfully prepared via a simple electrodeposition-immersion method. The π–d conjugation between imidazole ligands and the Sn-P network facilitates charge transfer, while the constructed heterogeneous interface promotes the generation of active intermediates at a low applied potential (1.0–1.1 V vs. RHE), enabling efficient hydrogen evolution and wastewater treatment under high-salt conditions.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Liu Lunrong,Li Wenjing,Teng Mingyue,Yin Chengri,Yin Zhenxing
Direct urea fuel cells (DUFCs), as an emerging power generation technology, can efficiently convert the chemical energy stored in urea into electrical energy. The urea oxidation reaction (UOR) at the DUFC anode is the key reaction determining its power output. In particular, when wastewater containing urea is used as fuel, the slow kinetics of the UOR severely limit the power output. Here, a Ni 3 S 2 /CoSe 2 -NF p–n heterojunction with a nano-coral structure was fabricated by in situ growing n-type Ni 3 S 2 nanosheets onto p-type CoSe 2 nanoneedle arrays on nickel foam (NF). Mott–Schottky analysis, X-ray photoelectron spectroscopy, and ultraviolet photoelectron spectroscopy reveal that the p–n heterostructure facilitates charge transfer from Ni 3 S 2 nanosheets to CoSe 2 nanoneedles. Furthermore, density functional theory calculations indicate that the p–n heterostructure modulates the electronic states, significantly optimizes the d-band center, and promotes the adsorption of urea molecules on the catalyst surface. Compared to Ni 3 S 2 and CoSe 2 , the p–n heterojunction alters the rate-determining step (RDS) of UOR from the *CO(NH 2 )NH → *CO(NH)N pathway to the *CO(NH)N → *CONN pathway, significantly lowering the Gibbs free energy of the RDS and enhancing the UOR kinetics. Therefore, the Ni 3 S 2 /CoSe 2 -NF composite electrode achieves a current density of 100 mA cm –2 at only 1.33 V vs RHE, and at 1.35 V vs RHE with human urine as the electrolyte. Notably, the DUFC employing the Ni 3 S 2 /CoSe 2 -NF composite electrode delivers a maximum power density ( P max ) of 27.52 mW cm –2 , and retains a P max of 19.68 mW cm –2 even with human urine as the fuel.
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PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2026
·
IF 2.1
Sun Min,Zhang Yihu,Li Bin,Wang Haiyan,Chen Peng,Li Zijiong
Nitrogen and phosphorus co-doped carbon dots (N/P-CD) were successfully synthesized via a facile and controllable electrochemical exfoliation strategy. In this approach, heteroatom doping is achieved through electrolyte engineering. Compared with conventional high-temperature or multistep synthetic methods, this strategy enables precise regulation of nitrogen and phosphorus incorporation simply by tuning the electrolyte composition, thereby providing an effective platform for the controllable modulation of the electronic structure of carbon dots. The electrocatalytic performance of N/P-CD toward the oxygen reduction reaction (ORR) was systematically evaluated in alkaline media. Benefiting from the synergistic effect between nitrogen and phosphorus dopants, the catalyst exhibits significantly enhanced intrinsic activity. Specifically, compared with undoped carbon dots, the onset potential and half-wave potential are positively shifted by 142 mV and 141 mV. Moreover, compared with the singly doped samples (N-CD and P-CD), N/P-CD exhibits a higher onset potential (0.86 V) and half-wave potential (0.76 V), demonstrating electrocatalytic activity comparable to that of the commercial Pt/C electrode. N/P-CD also demonstrated excellent electrochemical stability, as no significant shift in the CV curves was observed after 5,000 cycles, indicating the outstanding stability of the material. This study demonstrates that N/P-CD, as a low-cost and non-precious metal ORR electrocatalyst, shows promising potential in alkaline oxygen reduction systems and can serve as a scalable and environmentally friendly alternative to conventional Pt-based catalytic systems.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Kunxiang Deng,Yuyu Zheng,Zhifang Liu,Linzi Huang,Xiaoqian Sun,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
The unidirectional electric field derived from the p-n heterojunction accelerates carrier migration. • The S-scheme interfacial charge transfer pathway expedites the separation of electron-hole pairs. • Carrier transfer trends are corroborated by density functional theory calculations. • Demonstrates reliable detection of ornidazole in real-world samples. Ornidazole (ONZ) is a widely used nitroimidazole-class antibiotic whose environmental persistence due to misuse intensifies antimicrobial resistance and accelerates pathogen evolution, posing serious risks to human health and ecological safety. To address this issue, we developed a novel photoelectrochemical (PEC) sensor for ultrasensitive ONZ detection based on a p-n heterojunction between pseudobrookite-type oxide MgTi 2 O 5 and the metal-organic framework (MOF) Cu-BTC. Density functional theory (DFT) calculations corroborate the favorable band structure of the heterojunction. The built-in electric field and S-scheme charge transfer at the interface enable efficient separation of photogenerated carriers, yielding an ultralow detection limit of 0.65 pM, a wide linear range from 1 pM - 10 nM (R 2 = 0.9992), and excellent anti-interference, selectivity, stability and reproducibility. The sensor achieved 98.43% - 103.62% recovery in real samples including commercial capsules, tablets, and environmental water, demonstrating high practical reliability. This work presents a cost-effective, portable, and high-performance platform for ONZ monitoring and offers new insights into advanced PEC sensor design for antibiotic pollution detection. Construction of a MgTi 2 O 5 /Cu-BTC p-n heterojunction sensing interface for ultrasensitive PEC detection of ONZ in pharmaceuticals and environmental water samples. Download: Download high-res image (166KB) Download: Download full-size image
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高影响因子
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