ANALYTICAL CHEMISTRY
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2025
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IF 6.7
Fei Hu,Kaihui Liu,Yunyun Zhang,Shuhao Zhao,Tianyi Zhang,Cuiping Yao,Xing Lv,Jing Wang,Xiaolong Liu,Niancai Peng
Infectious diseases, especially respiratory infections, have been significant threats to human health. Therefore, it is essential to develop rapid, portable, and highly sensitive diagnostic methods for their control. Herein, a short-time preamplified, one-pot clustered regularly interspaced short palindromic repeats (CRISPR) nucleic acid detection method (SPOC) is developed by combining the rapid recombinase polymerase amplification (RPA) with CRISPR-Cas12a to reduce the mutual interference and achieve facile and rapid molecular diagnosis. SPOC can reduce the detection time and stably detect up to 1 copy/μL of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA without affecting the detection sensitivity. A highly sensitive one-pot assay integrated with reverse transcription RPA is achieved by wrapping paraffin with a specific melting point on the lyophilized CRISPR reagent surface. A self-heating pack is designed based on thermodynamic principles to melt the paraffin and release CRISPR reagents, enabling low-cost and time-saving detection. Notably, the designed system, coupled with RNA extraction-free technology, can achieve “sample-in-answer-out” detection of the SARS-CoV-2 Orf1ab gene within 22 min using smartphone imaging. The developed assay is validated on 12 clinical samples, and the results 100% correlate with real-time polymerase chain reaction. SPOC is time-saving, is easy to operate, and can eliminate centrifugal and complex hardware devices, satisfying the demand for point-of-care diagnostics in resource-constrained settings.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Ishioma Laurene Egun,Yang Hou,Zhengfei Chen
Zinc Supercapatteries (ZnSCs) are promising, low-cost and environmentally friendly electrochemical energy storage devices, with biomass-derived carbon showing promising results as its positrode active material. However, achieving sustainable biomass-derived carbon via a simple, single-stage and low-temperature process with properties for optimum electrochemical performance is still a challenge. In this study, we show that ultramicroporous and self-doped carbon which are critical electrode properties can be obtained from wet waste coffee grounds via a single-stage thermal process termed molten base carbonization and activation. The process integrates carbonization, in-situ activation and self-doping in one thermal step, driven by the catalytic reactivity of intercalated potassium ion within various components. Temperature control during the process resulted to changes in the microstructure, hierarchical porosity, oxygen and nitrogen functionalities affecting electrochemical performance. The carbon obtained at 700 °C (CGZ-700) as positive electrode active material in Zinc supercapattery achieved specific capacity of 361 mAh g −1 , specific capacitance of 204F g −1 at 0.1 A g −1 , alongside a specific energy and power of 91.99 Wh kg −1 and 89.99 W kg −1 . At 1.0 A g −1 , it achieved a coulombic efficiency of 99.8 % and 78 % capacity retention after 10,000 cycles. This study offers a facile, low temperature single-stage thermal conversion process for low-cost waste biomass, advancing the application of waste-derived carbon in ZnSCs and sustainable energy storage devices.
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高影响因子
CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Bolin Yang,Changliu Kuang,Zhenglong Liu,Chao Yu,Chengji Deng,Jun Ding,Zhoufu Wang,Shixian Zhao
In order to effectively improve the density and oxidation resistance of ZrB 2 -SiC coating materials, HfB 2 was added into ZrB 2 -SiC system and their physical properties, oxidation resistance were explored. It was observed that the flexural strength of the spark plasma sintered sample with 8 vol% HfB 2 was 717.1 MPa, which was 162.6 % higher than that of the sample without HfB 2 (273.1 MPa). At the same time, the oxidation activation energy of the sample with 15 vol% HfB 2 was increased to 511.98 kJ/mol, showing excellent oxidation resistance. The oxidation process is that HfB 2 and ZrB 2 were oxidized prior to SiC to form HfO 2 and ZrO 2 to form a dense oxide layer on the outermost layer of the sample, and SiC reacted to form a second dense SiO 2 layer to hinder oxygen intrusion. In summary, diboride can achieve the synergistic effect of improving the oxidation resistance and structural optimization of ZrB 2 -SiC-HfB 2 coatings composites, which provides a theoretical basis for its practical application.
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ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Lulu Wang,Xuhong Guo,Fang Zhao
The luminescent solar concentrator photo microreactor (LSC-PM), a microreactor utilizing luminophores to convert the high-energy photons in sunlight to those that can be absorbed by the photoreaction, holds promising prospects in solar photochemical synthesis, which is to harness sunlight to directly drive photoreactions. Herein, we proposed two new types of LSC-PMs, i.e., the fluoropolymer tube-in-tube reactor and the glass triple-channel reactor, both of which implemented the idea of having luminophores be dissolved in a solvent to form the luminescent fluid, instead of being immobilized in the solid lightguide. The two reactors achieved convenient reuse of the photodegraded luminescent fluid and rapid screening and change of the luminophore types to satisfy the demands of different photoreactions. According to the test of a synthetically significant reaction performed in the triple-channel reactor, it was estimated that a CO2 emission reduction of 15 kg could be realized to produce 1 g of N-formylpiperidine under sunlight as compared to employing an artificial light source. The low-cost and easily assembled tube-in-tube reactor and the deliberately designed triple-channel reactor, with both excellent chemical and irradiation resistance and high flexibility in the choice of luminophore types, could both serve as potential options for different applications in solar photochemical synthesis.
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Journal of Energy Storage
·
2024
·
IF 8.9
Wang Hanbo,Pei Dongyu,Wan Sheng,Wang Ziming,Fan Zhitian,Tian Yumei,Li Kechang,Lu Haiyan
We initially proposed a facile one-step electrodeposition method utilizing Cyclic Voltammetry (CV) for the growth of NiO nanospheres (NiO-NSs) on three-dimensional nickel foam (NF) substrates. Notably, no binders, templates, or surfactants were introduced throughout the entire experimental process, ensuring the cleanliness and environmental friendliness of the synthesis process. The reaction parameters were successfully fine-tuned to achieve efficient in-situ growth, porous structure, and uniform morphology. The resulting optimized electrodes underwent characterization using diverse microscopic techniques. Subsequently, the electrochemical performance was analyzed in both half and full cell configurations. The obtained porous electrode materials in-situ grown on NFs exhibited a distinct nanosphere morphology with an average diameter of approximately 200 nm. The NiO-NSs exhibited satisfactory electrochemical performance in three-electrode system, demonstrated an enhanced specific capacitance of 438.2C g −1 (876.4 F g −1 ) at 1 A g −1 , highlighting their exceptional electrochemical performance. Furthermore, the assembled supercapacitor with NiO-NSs and activated carbon yielded a significantly high energy density of 37.71 Wh kg −1 and a power density of 246.38 W kg −1 at 1 A g −1 . More significantly, the outstanding capacity retention was 81.27 % after 45,000 continuous GCD cycles. This study offered novel insight into a facile synthesis method, utilizing CV electrodeposition for designing high-performance metal oxide or hydroxide materials, ultimately boosting electrochemical performance.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2024
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IF 5.8
Ziming Wang,Fangbing Liu,Dongyu Pei,Hanbo Wang,Sheng Wan,Yan Wang,Mingrui Yu,Kechang Li,Haiyan Lu
As environmental and carbon emission issues become increasingly severe, electrochemical energy storage systems have gained attention. Compared to traditional supercapacitors, zinc-ion hybrid capacitors (ZIHCs) are not only environmentally friendly but also cost-effective. MnO 2 , with its low cost, eco-friendliness, high theoretical capacity, and stable crystal structure, is considered a promising positive electrode material. In this study, the morphology of MnO 2 was optimized using electrodeposition. During cycling, zinc ions reversibly intercalate and extract from MnO 2 , forming a cactus-like nanoflower structure. This structure is loose and porous, providing ample reaction space for active materials. The assembled device exhibits excellent performance in both energy density (85.68 Wh kg −1 ) and stability (91.60 %).
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Catalysts
·
2025
·Vol. 15
·期 2
·169
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IF 4
Shihu Ding,Peng Tan,Nuo Meng,Xiguo Zhang,Lin Ma,Minghua Zhou,Wei Wang
In this study, the novel composite materials of activated carbon (AC) and persulfate (PS) doped by nitrogen (N) and sulfur (S) were successfully synthesized through one-step mechanical ball milling. Different from the previous liquid-phase activation process of PS, the direct in situ solid-phase activation of PS was achieved through the newly generated chemical bonds between AC and PS. The increased crystal surface exposure and highly electronegative atoms provided more reactive sites for the modified composites, enabling them to extract electrons from the pollutant. Compared to S doping, the N-doped composite exhibited a higher oxidative degradation ability, with a removal rate of 93.6% for tetracycline (TC, 40 mg/L) within 40 min. The interactions between AC and PS that occur in the interior of the composite avoid the limitations of mass transfer between the solid–liquid interface, thus expanding the pH application range of the catalytic reaction and minimizing the interference of other components in the solution. The synergistic effect between active oxygen species and electron transfer is the main mechanism for promoting pollutant degradation. This research puts forward a new insight into the activation approach of PS and proposes a feasible method for the advanced treatment of TC wastewater.
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ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Jiang-Nan Zhao,Chenchen Liu,Kang Yang,Rui Tang,Qiyan Fu,Kai Ke,Bo Yin,Ming-Bo Yang,Wei Yang
Integrating multiple functions into fabrics has provided attractive opportunities for smart wearable technologies. However, it remains challenging to achieve functionalities with fabrics through a facile green pathway suitable for industrialization. Herein, we demonstrate a facile metal-free and solvent-free route to endow commercial fabrics with unified functions utilizing hydroxyethyl cellulose (HEC) and carbon black (CB) via facile dip-coating. Based on the superior compatibility of HEC and CB, incorporating trace amounts of CB (as low as 0.25 wt %) triggers remarkable photo/electro-responsive thermal conversion with rapid responsiveness, appropriate temperatures, and reliable repeatability, verifying wearable heating performances of the modified fabrics. Notably, the resultant fabrics serving as a tribopositive material of triboelectric nanogenerators harnessed electrical signals from minute movements to deliver an open voltage of 321 V, a short current of 3.84 μA, and a transferred charge of 9 nC, and eventually achieved a maximum instantaneous power density up to 2067 mW/m2, showing a significant improvement of 28.2 times higher than that of the original fabric. Furthermore, the fabric-based TENGs effectively deliver instantaneous feedback on human motion and gait analysis, which exhibits good application prospects for detecting and optimizing body postures. The eco-friendly and effective methodology drives the facile and sustainable conversion of commercial fabrics toward wearable healthcare applications.
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APPLIED CATALYSIS A-GENERAL
·
2024
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IF 4.7
Xinzheng Ma,Jingyi Chen,Ziang Zhao,Ronghe Lin,Xiaoling Mou,Yihui Li,Li Yan,Hejun Zhu,Yunjie Ding
Solvent-free oxidation of benzyl alcohol on bimetallic Pt-Bi catalysts supported on activated carbon (AC), carbon black, carbon nanotube, and N-doped carbon (NC) was studied. While the dispersions of both metals significantly increased on all the bimetallic catalysts, the composition and distribution of the metal species were strongly influenced by different supports. The formation of PtBi alloy was favored on most supports except AC, where aggregation of Bi was observed. Moreover, the oxidation activity was found to closely link to the surface Bi:Pt ratios. Extensive optimizations on PtBi/NC catalyst in batch and flow reactors yielded impressive benzaldehyde yields of 86 % and 70 %, respectively, under mild conditions, which are comparable or even superior to the performances of most state-of-the-art catalysts. Notably, a 96-hour continuous test in a trickle-bed reactor demonstrated stable operation without catalyst deactivation, demonstrating the promising industrial potential.
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高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-15
·
IF 14.7
Cui Lele,Chen Bin,Chen Dongxu,He Chen,Liu Yi,Zhang Hongyi,Qiu Jian,Liu Le,Jing Wenheng,Zhang Zhenghua
The meticulous design of advanced electrocatalysts and their integration into gas diffusion electrode (GDE) architectures is emerging as a prominent research paradigm in the H 2 O 2 electrosynthesis community. However, it remains perplexing that electrocatalysts and assembled GDE frequently exhibit substantial discrepancies in H 2 O 2 selectivity during bulk electrolysis. Here, we elucidate the pivotal role of mass transfer behavior of key species (including reactants and products) beyond the intrinsic properties of the electrocatalyst in dictating electrode-scale H 2 O 2 selectivity. This tendency becomes more pronounced in high reaction rate (current density) regimes where transport limitations are intensified. By utilizing diffusion-related parameters (DRP) of GDEs (i.e., wettability and catalyst layer thickness) as probe factors, we employ both short- and long-term electrolysis in conjunction with in-situ electrochemical reflection-absorption imaging and theoretical calculations to thoroughly investigate the impact of DRP and DRP-controlled local microenvironments on O 2 and H 2 O 2 mass transfer. The mechanistic origins of diffusion-dependent conversion selectivity at the electrode scale are unveiled accordingly. The fundamental insights gained from this study underscore the necessity of architectural innovations for mainstream hydrophobic GDEs that can synchronously optimize mass transfer of reactants and products, paving the way for next-generation GDEs in gas-consuming electroreduction scenarios.
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高影响因子
Small
·
2024
·
IF 13
Tong Hu,Shufen Zhang,Yong Qi
The ability to reversibly exhibit structural color patterns has positioned photonic crystals (PCs) at the forefront of anti-counterfeiting. However, the security offered by the mere reversible display is susceptible to illicit alteration and disclosure. Herein, inspired by the electronic message captcha, bilayer photonic crystal (BPC) systems with integrated decryption and verification modules, are realized by combining inverse opal (IO) and double inverse opal (DIO) with polyacrylate polymers. When the informationized BPC is immersed in ethanol or water, the DIO layer displayed encrypted information due to the solvent-induced ordered rearrangement of polystyrene (PS) microspheres. The verification step is established based on the different structural colors of the IO layer pattern, which result from the deformation or recovery of the macroporous skeleton induced by solvent evaporation. Moreover, through the evaporation-induced random self-assembly of PS@SiO 2 and SiO 2 microspheres, unclonable structurally colored identifying codes are created in the IO layer, ensuring the uniqueness upon the verification. The decrypted code in the DIO layer is valid only when the IO layer displays the pattern with the predetermined structural color; otherwise, it is a pseudo-code. This structural color-based “decryption-verification” approach offers innovative anti-counterfeiting applications in nanophotonics.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Fan Li,Shang Sun,Lina Ma,Wenjing Zhang,Min Zhou,Yu Fu,Hengrui Guo,Xueying Su,Jinliang Shi,Hao Luo,Yang Yang
The intrinsically low electrical conductivity of elemental iodine and its slow redox kinetics represent two significant obstacles that hinder the commercialization of aqueous zinc-iodine batteries. These challenges can be addressed by modulating the adsorption-desorption equilibrium of iodide ions in the active material. This study presented a synergistic strategy of “Electronic Modulation” and “Phase Transition Engineering” to optimize the catalytic adsorption-desorption dynamics. A dual-designed Fe ions doped VO 2- x heterostructure anchored on reduced graphene oxide (Fe-VO 2- x /rGO) is demonstrated to synchronously adjust iodine adsorption and boost redox kinetics. The Fe-induced electronic structure modulation elevated the d-band center of vanadium, creating catalytic sites to promote the desorption of iodide ions and facilitate their diffusion. Concurrently, the phase transition from VO 2- x to V 2 O 5- n within the heterostructure establishes a 3D conductive network, synergizing with rGO to ensure rapid ion/electron transport. This “adsorption-catalysis-transport” collaborative mechanism enabled the Fe-VO 2- x /rGO cathode to achieve an ultrahigh capacity retention of 81.48% after 60,000 cycles at 20 A g −1 , surpassing state-of-the-art zinc-iodine systems. The work provides a paradigm for manipulating interfacial dynamics through electronic and crystallographic dual regulation in conversion-type batteries.
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