ACS Sensors
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2026
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IF 10.9
Peng Xu,Yanlei Guo,Xin Lv,Shuting Wei,Dan Yang,Renquan Guan,Yuxin Wang,Yingmin Teng,Aiceng Li,Huaqiao Tan,Zhongling Lang,Zheng Lou,Lili Wang,Zhao Zhao
The necessity for high-efficiency, low-power room-temperature (RT) ammonia (NH3) sensors is particularly acute in environmental monitoring, industrial safety, and medical diagnostics. However, conventional chemiresistive sensors frequently require elevated temperatures to initiate reactions, leading to high energy consumption and potential safety risks. Inspired by plant photosynthesis, this paper successfully designs a ternary S-scheme heterojunction for a photo-activated RT NH3 sensor. The design effectively mimics the efficient charge transfer process in photosynthesis, thereby significantly promoting the separation and migration of photogenerated carriers and enhancing the sensing performance. Experimental results demonstrate exceptional performance under illumination: a high response value of 1679% (representing a 20-fold improvement over the dark state), rapid response and recovery times of 2.1 s and 1.9 s, respectively, along with outstanding selectivity, excellent stability, and a detection limit as low as 17 ppb. This work demonstrates a novel, efficient RT photo-activated NH3 sensor and provides innovative insights into designing biomimetic, smart gas-sensing materials and devices.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xinlong Fan,Guojian Lin,Zhouyu Huang,Tianqi Yang,Wenkui Zhang,Dan Li,Haiyuan Zhang,Hui Huang,Wenlong Song,Yang Xia,Jun Zhang
Poly(1,3-dioxolane) (PDOL)-based electrolytes are promising candidates for lithium–sulfur (Li–S) batteries due to their high ionic conductivity and low cost. However, their poor interfacial compatibility with lithium metal impedes the formation of a stable solid electrolyte interphase (SEI). This challenge is further exacerbated by the fact that conventional nitrate additives (e.g., LiNO3) inhibit 1,3-dioxolane (DOL) polymerization. Herein, we propose isosorbide dinitrate (ISDN), a covalent organic nitrate, as a multifunctional additive that not only promotes DOL polymerization but also enables the formation of an inorganic-rich hybrid SEI (Li3N and LiNxOy), as verified through X-ray photoelectron spectroscopy (XPS) analysis and theoretical calculations. The reinforced SEI enhances interfacial ion transport and mechanical robustness, thereby achieving uniform and dendrite-free lithium deposition. Density functional theory (DFT) calculations further reveal strong chemical interactions between ISDN and PDOL, which effectively enhance the adsorption of polysulfide onto PDOL to suppress the shuttle effect. Benefiting from these synergistic functions, Li|PDOL@ISDN|Li symmetric cells achieve stable cycling exceeding 1000 h without short-circuit failure. Quasi-solid-state Li–S batteries also demonstrate excellent cycling stability, with a capacity retention of 84.7% after 100 cycles at 0.2C. This work offers a promising strategy for designing high-performance solid-state Li–S batteries based on PDOL electrolytes.
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ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Innocent Toendepi,Yang Zhao,Dongwei Ma,Yaofeng Zhu
Increasing the number of methoxy groups on dialdehyde urethane monomers systematically enhances the mechanical strength, and stress relaxation of the cured poly(imine-urethane) networks. • The presence of dynamic imine and hydrogen bonds endows all three poly(imine-urethane) networks with scratch repair, reprocessing and degradation capabilities. • MWCNT/poly(imine-urethane) composites demonstrate reversible bond driven patch repair, welding, and shape changing behaviour, offering on-demand adaptability. • The 10% MWCNTs/PIU-2 nanocomposites achieves excellent electromagnetic wave absorption and clean recovery of undamaged MWCNT fillers via degradation. Thermoset polymer nanocomposites are arduous to reprocess, degrade, repair once damaged or reclaim functional fillers, leading to environmental pollution and waste of resources upon reaching the end of service life. Herein, three solid dialdehyde urethane monomers (DAU-1, DAU-2 and DAU-3) with varying numbers of methoxy groups were synthesized and cured with triamine. The cured poly(imine-urethane) (PIU-1, PIU-2 and PIU-3) polymeric matrix exhibits a gradual increase in mechanical, thermal and stress relaxation properties with an increase in the number of methoxy groups. All three poly(imine-urethane) systems demonstrated scratch repair, reprocessing and degradation behaviors due to the presence of reversible imine and hydrogen bonds. Notably, after the second cycle of reprocessing PIU-3, the tensile strength and Young’s modulus were significantly increased by 70% and 49%, respectively, owing to the improved polymer configuration and alignment. The results showed that the activation energy of metathesis degradation and stress relaxation properties of all poly(imine-urethane) were dependent on the imine bond, structural configuration by multiple hydrogen bonds and steric barriers influenced by methoxy and urethane groups. Finally, multiwalled carbon nanotubes coated with poly(imine-urethane) (MWCNTs/PIU-2) with different filler loadings were fabricated, which demonstrated patch repair, welding and shape changing performance as a result of the presence of reversible bonds. Additionally, the 10 wt% MWCNTs/PIU-2 nanocomposite displayed good electromagnetic wave absorption performance with a reflection loss of −34.02 dB at 10.06 GHz and a wide effective absorption band of 3.01 GHz. Meanwhile, the undamaged MWCNT fillers were reclaimed from the nanocomposite by taking advantage of the metathesis cleavability of the reversible imine bonds. Poly(imine-urethane)s (PIUs) were prepared using triamine and synthesized dialdehyde urethane (DAUs) containing different number of methoxy groups, owing to the presence of dual dynamic bonds the resultant MWCNTs/PIU nanocomposites exhibits excellent microwave absorption, degradation, and repairing features. Download: Download high-res image (435KB) Download: Download full-size image
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JOURNAL OF POWER SOURCES
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2016
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IF 6.333
Yanchun Yang,Xiaojiao Kang,Lijian Huang,Song Wei,Daocheng Pan
Earth abundant Cu 2 ZnSn(S,Se) 4 (CZTSSe) has been considered as one of the most promising thin film solar cell absorber candidates. Here, we develop a facile water-based precursor solution approach for depositing high-efficiency Cu 2 ZnSn(S,Se) 4 thin film solar cells. In this environmentally friendly approach, inexpensive elemental Cu, Zn, Sn and S powders are used as the starting materials and are dissolved in the aqueous solution of thioglycolic acid and methylamine, forming a homogeneous precursor solution for depositing Cu 2 ZnSnS 4 nanocrystal thin film . As-deposited CZTS nanocrystal thin films are selenized to form the large-grain CZTSSe absorber layers . It was found that Na doping plays an important role in the formation of the extremely dense and flat CZTSSe absorber layer, and fill factor can be significantly improved for Na-doped CZTSSe solar cells, which lead to a photoelectric conversion efficiency of 6.96% with an open-circuit voltage of 378 mV, a short current density of 28.17 mA cm −2 , and a fill factor of 65.4%.
研究领域:
材料科学
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新能源材料
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半导体薄膜
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光伏技术
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无机功能材料
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jianghua Huang,Baikang Zhu,Debin Song,Bohong Wang,Lihui Chen,Lu Lu,Qingguo Chen,Limei Gai,Chunyang Zhai,Li Chen,Hengcong Tao
The construction of S-scheme heterostructure is a prospective strategy to remove polycyclic aromatic hydrocarbons (PAHs) from simulated seawater. In this study, a novel Bi 2 S 3 /CeVO 4 S-scheme heterojunction photocatalyst was prepared by solvent thermal method. The successful construction of S-scheme heterostructure is beneficial to the separation and migration of photogenerated carriers, thus achieving excellent redox capacity and efficient production of free radicals, which is conducive to promoting the photocatalyst to transform pollutants into H 2 O, CO 2 . In pure water, the optimized Bi 2 S 3 /CeVO 4 heterojunction (Bi/Ce-30) achieved a high degradation efficiency (97.39 %) for naphthalene (NAP). In simulated seawater, the degradation efficiency of NAP still reaches 87.20 % ( k = 0.01653 min −1 ), which is 7.58 folds higher than pure CeVO 4 . Furthermore, the effect (such as solution pH, pollutant concentration, etc.) on the photocatalytic performance of Bi 2 S 3 /CeVO 4 heterojunction was investigated. The possible photocatalytic degradation processes of NAP were qualitatively analyzed using 3D fluorescence spectroscopy and HPLC-MS to reveal the major degradation pathways. In addition, toxicity assessment software was used to demonstrate the gradual decrease in toxicity of the intermediate products. Furthermore, we elucidated the possible photocatalytic mechanism of Bi 2 S 3 /CeVO 4 S-scheme heterojunction for the degradation of NAP. This work provides new insights into the realization of S-scheme heterojunction for removing polycyclic aromatic hydrocarbons from natural seawater.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
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IF 6.2
Tao Yu,Yiting Che,Hao Fu,Dingfeng Ma,Wenjia Zhao,Shitan Yan,Ting Bian,Liuting Zhang
The innovative design of highly active and noble-metal-free electrocatalysts for the oxygen reduction reaction (ORR) is urgently required for the widespread application of Zinc-air batteries (ZABs). This study presents a porous composite, Co 9 S 8 @NSC, which integrates N and S co-doped carbon aerogels with Co 9 S 8 nanoparticles to create ideal ORR electrocatalysts. The porous carbon aerogels posesess a high specific surface area, which offers abundant catalytic sites and efficient channels for the reactants and electrolytes, while maintaining a uniform distribution of nanoparticles during long-term operation. The collaboration of ORR-active Co 9 S 8 nanoparticles and N and S co-doped carbon aerogels significantly improves ORR performance. Co 9 S 8 @NSC demonstrates a competitive ORR activity, including a high half-wave potential (E 1/2 , 0.85 V), fast electron transfer kinetics (Tafel slop, 53.3 mV dec −1 ), and prominent long-term stability. When utilized as an air cathode catalyst in primary Zn-air batteries, the Co 9 S 8 @NSC electrode displays a power density of 150.9 mW cm −2 and a specific capacity of 735 mAh g zn −1 . Overall, this work presents a promising electrocatalyst design for ORR, which could greatly benefit the development of ZABs.
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Nano Energy
·
2023
·
IF 17.6
Shuai Zhang,Shuo Meng,Ke Zhang,Zhuang Wang,Xiaoyun Xu,Chuanwei Zhi,Shuo Shi,Jinlian Hu
Triboelectric nanogenerator (TENG) is one of the key research directions for future human-computer interaction (HCI), biomedicine, and environmental protection. Bio-based materials are an essential branch of many degradable materials. Keratin has attracted much attention due to its advantages of easy access, biodegradability, and good biocompatibility . A highly sensitive single-electrode TENG (S-TENG) based on CaCl 2 /PVA/keratin and Ecoflex with micro-domes is designed. The excellent stability (18,000 cycles) and stretchability (200%) of the sensor are confirmed by research. Moreover, the presence of CaCl 2 and keratin can significantly increase the S-TENG's output voltage, and the reason is also explored by the density functional theory (DFT) method. Through simulation, it is found that the decrease of the HOMO (highest occupied molecular orbital)-LUMO (lowest unoccupied molecular orbital) gap and the increase of the electrostatic potential are the root causes of the voltage increase. Relying on the excellent characteristics of the S-TENG, finger curvatures, gestures, and object shapes are recognized. Among them, the accuracy of object shape recognition by machine learning algorithm reached 98.1%. This study provides a new method for improving the output efficiency and prolonging the service life of S-TENG and confirms the feasibility of the electron cloud trap model to explain biomass triboelectric materials by keratin and CaCl 2 .
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Jiayi Wang,Penggang Ren,Yanli Du,Xueyan Zhao,Zhengyan Chen,Lu Pei,Yanling Jin
Graphitic carbon nitride (g-C 3 N 4 ) is a promising photocatalyst with lots of merits, such as visible light driven (200–1000 nm), cost-effective and high stability. However, the single g-C 3 N 4 photocatalyst is limited in its performance due to the high complexation rate of photogenerated electrons and holes and the confined specific surface area. Herein, a S-scheme heterojunction catalyst involving tubular g-C 3 N 4 (TCN) and TiO 2 is designed and constructed via precursor reforming strategy with subsequent hydrothermal calcination process. The tubular structure offers more active centers, conducive to light absorption and contact with pollutants, while the heterojunction facilitates the transfer and separation of electrons and holes. Thus, the TCN/TiO 2 catalyst exhibits excellent photocatalytic activity with degradation efficiencies for methylene blue (MB) and tetracycline (TC) reaching 96.6 % and 100 %, respectively, as well as high degradation efficiency for other dyes (Congo red and Eosin y). Besides, TCN/TiO 2 catalyst demonstrates outstanding stability and potential for practical application. An innovative S-scheme heterojunction system has shown remarkable potential for improving the separation and transferring electron-hole pairs, as well as delivering stronger redox capability. This work provides a promising strategy for the preparation of g-C 3 N 4 /TiO 2 catalyst for the effective treatment of contaminated water.
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CHEMOSPHERE
·
2023
·
IF 8.8
Kexue Liu,Na Li,Jia Ding,Na Chen,Suo Wang,Qian Wang,Xiangfeng Yao,Xianxu Li,Jun Wang,Huanshun Yin
Bi 2 O 2 CO 3 /Bi 2 S 3 heterojunction was prepared by one-step hydrothermal method, where Bi(NO 3 ) 3 was employed as Bi source, Na 2 S was used as a sulfur source, and CO(NH 2 ) 2 was adopted as C source. The load of Bi 2 S 3 was adjusted by changing the content of Na 2 S. The prepared Bi 2 O 2 CO 3 /Bi 2 S 3 illustrated strong photocatalytic activity towards dibutyl phthalate (DBP) degradation. The degradation rate was 73.6% under the irradiation of visible light for 3 h, which were 3.5 and 1.87 times for Bi 2 O 2 CO 3 and Bi 2 S 3 , respectively. In addition, the mechanism for the enhanced photoactivity was investigated. After combined with Bi 2 S 3 , the formed heterojunction structure inhibited the recombination of photogenerated electron-hole pair, improved the visible light adsorption, and accelerated the migration rate of the photogenerated electron. As a result, analysis of the radical formation and the energy band structure revealed that Bi 2 O 2 CO 3 /Bi 2 S 3 was consistent with the S-scheme heterojunction model. The S-scheme heterojunction allowed the Bi 2 O 2 CO 3 /Bi 2 S 3 to possess high photocatalytic activity. The prepared photocatalyst presented acceptable cycle application stability. This work not only develops a facile one-step synthesis technique for Bi 2 O 2 CO 3 /Bi 2 S 3 , and also provides a good platform for the degradation of DBP.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Qingmiao Zhang,Tianhao Yao,Yanni Chen,Xunan Jing,Xiaoping Zhao,Daquan Wang,Hongkang Wang,Lingjie Meng
Transition metal oxides as potential anodes of lithium-ion batteries (LIBs) possess high theoretical capacity but suffer from large volume expansion and poor conductivity. To overcome these drawbacks, we designed and fabricated polyphosphazene-coated yolk-shelled CoMoO 4 nanospheres , in which polyphosphazene with abundant C/P/S/N species was readily converted into carbon shells and provided P/S/N dopants. This resulted in the formation of P/S/N co-doped carbon-coated yolk-shelled CoMoO 4 nanospheres (PSN-C@CoMoO 4 ). The PSN-C@CoMoO 4 electrode exhibits superior cycle stability of 439.2 mA h g −1 at 1000 mA g −1 after 500 cycles and rate capability of 470.1 mA h g −1 at 2000 mA g −1 . The electrochemical and structural analyses reveal that PSN-C@CoMoO 4 with yolk-shell structure, coated with carbon and doped with heteroatom not only greatly enhances the charge transfer rate and reaction kinetics, but also efficiently buffers the volume variation upon lithiation/delithiation cycling. Importantly, the use of polyphosphazene as coating/doping agent can be a general strategy for developing advanced electrode materials.
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MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 4
·1-11
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IF 5.7
Li Yangguang,Yang Qiaoran,Feng Yifan,Ye Bang-Ce
For practical analysis and simultaneous detection of arbutin (AR) and hydrochinone (HQ) in cosmetics, an electrochemical sensor has been designed based on nitrogen and sulfur co-doped Fe–Ni alloy (N,S-FeNi 3 /C) nanoparticles. The N,S-FeNi 3 /C has been prepared for the first time via hydrothermal synthesis and high-temperature carbonization. N,S-FeNi 3 /C not only improves the charge transfer to the surface, but also provides rich active sites and fast ion diffusion rates owing to the iron and nickel bimetallic materials. In addition, the d-band structure of transition metals (nickel and iron) introduced by the N and S atoms exhibits an electronic structure similar to that of noble metal catalysts, thus enhancing electrocatalytic activity and increasing conductivity. Additionally, the double doping of S and N atoms significantly increases the active sites of carbon atoms; thus, N-S-FeNi3/C exhibits excellent electrochemical catalytic activity for the oxidation of AR and HQ. Further, the N,S-FeNi 3 /C sensor is used for the simultaneous determination of HQ and AR by square-wave pulse voltammetry. Distinct oxidation peaks of HQ and AR are observed at potentials of +0.028 V and +0.352 V (vs. SCE). The electrical signal increases linearly in the HQ concentration ranges of 0.1–100 μM and 0.05–70 μM for the simultaneous determination of AR and HQ with a detection limit as low as 0.0476 and 0.0135 μM (S/N = 3), respectively. Thus, rapid and accurate detection of AR and HQ in spiked cosmetics is successfully achieved, with a recovery ranging from 96.4 to 104.2%, and the relative standard deviation is lower than 3.8–4.0%. Graphical Abstract
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RSC Advances
·
2023
·Vol. 13
·期 12
·8227-8237
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IF 3.9
Xiaofei Fu,Junwu Tao,Zizhou Zhao,Siwen Sun,Lin Zhao,Zuming He,Yong Gao,Yongmei Xia
Reducing the recombination rate of photoexcited electron–hole pairs is always a great challenging work for the photocatalytic technique. In response to this issue, herein, a novel Z-scheme CuInS2/In2O3 with interfacial S–O linkages was synthesized by a hydrothermal and subsequently annealing method. The Fourier transform infrared (FT-IR) and X-ray photoelectron spectrometer (XPS) measurements confirmed the formation of covalent S–O bonds between CuInS2 and In2O3. The quenching and electron spin resonance (ESR) tests revealed the Z-scheme transfer route of photogenerated carriers over the CuInS2/In2O3 heterojunctions, which was further verified theoretically via density functional theory (DFT) calculations. As expected, the CuInS2/In2O3 heterojunctions showed significantly boosted photocatalytic activities for lomefloxacin degradation and Cr(VI) reduction under visible light illumination compared with the bare materials. Accordingly, a synergistic photocatalytic mechanism of Z-scheme heterostructures and interfacial S–O bonding was proposed, in which the S–O linkage could act as a specific bridge to modify the Z-scheme manner for accelerating the interfacial charge transmission. Furthermore, the CuInS2/In2O3 heterojunction also exhibited excellent performance perceived in the stability and reusability tests. This work provides a new approach for designing and fabricating novel Z-scheme heterostructures with a high-efficiency charge transfer route.
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