Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Yang Yaqian,Ran Wenhao,Li Ying,Chen Yancheng,Chen Di,Shen Guozhen
Biological vision system-inspired optoelectronic synapses integrate sensing, memory, and processing for external information perception. However, most efforts focus on spatial expansion while overlooking critical dimensions like polarization and temporal evolution, which are critical for information extraction in complex environments. Inspired by the polarization-sensitive properties of kingfisher vision, we develop a polarization-sensitive optoelectronic synapse array device based on PEA 2 SnI 4 microwires array. Their anisotropic properties ensure polarization recognition, achieving a dichroic ratio of 1.38. And the asymmetric electrode designs create differentiated contact barriers, facilitating efficient charge storage and erasure under low power consumption. By employing four polarization-state-dependent convolutional kernels, the device demonstrates edge extraction capabilities even under 50% salt pepper noise. Furthermore, it enables high-precision in-sensor reservoir computing, with 100% accuracy in extracting fish trajectories under complex light environments. This work demonstrates motion perception in complex environments and provides a foundation for developing multi-dimensional, time-resolved visual systems for intelligent sensing and recognition.
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INDUSTRIAL CROPS AND PRODUCTS
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2025
·
IF 6.2
Pei-Ru Zhou,Yu Chai,Jia-Tong Chen,Xiao-Ping Zheng,Yan-Zhen Zheng
The valorization of agricultural waste is critical for sustainable development, yet challenges persist in obtaining light-colored lignin with preserved structural integrity. In this study, an innovative one-step pretreatment strategy integrating deep eutectic solvents (DESs) with H 2 O 2 was developed to extract light-colored lignin directly from tea stem waste. The DES-H 2 O 2 system enabled the selective dissociation of lignin–carbohydrate complexes while preserving the fundamental aromatic structure of lignin. By varying the H 2 O 2 dosage, significant improvements in lignin decolorization were achieved, as evidenced by a marked reduction in the color difference relative to milled wood lignin (MWL). Comprehensive characterization using FTIR, GPC, Zeta potential, 31 P NMR, 2D-HSQC NMR, and XPS revealed that H 2 O 2 -induced oxidation not only facilitated the conversion of non-conjugated carbonyls into conjugated structures but also induced molecular depolymerization, reduced particle size and hydrogen-bond, and enhanced surface electronegativity. These modifications contributed to decreased chromophore efficiency and suppressed aggregation, ultimately yielding lignin with improved optical properties. Furthermore, incorporation of the light-colored lignin into a commercially available base cream demonstrated its potential as a sustainable UV-shielding agent, achieving a sun protection factor (SPF) exceeding 50 at optimal lignin concentrations. This work provides a promising green pathway for the high-value utilization of agricultural waste and lays the groundwork for the development of environmentally friendly, high-performance natural UV-protection products.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Liangliang Huang,Zhaodong Pan,Mengfei Hu,Rui Wang,Jun Jin,Huanwen Wang,Yansheng Gong
Converting carbon dioxide into fuel via photocatalysis holds immense significance in advancing the cause of sustainable energy generation. In this work, co-doped In 2 O 3 nanosheets with two transition metals, nickel (Ni) and copper (Cu), were successfully prepared using a straightforward ammonia precipitation and calcination technique. Notably, the 10 %Ni-5 %Cu-In 2 O 3 sample exhibited a remarkable CO generation rate of 528.8 μmol g −1 h −1 , which is a substantial 43.63-fold increase compared to the pristine In 2 O 3 (12.1 μmol g −1 h −1 ). Furthermore, the selectivity of the CO product was significantly enhanced from 19.7 % to 69.4 %, marking a significant improvement. The incorporation of Ni and Cu effectively modulated the energy band positions of In 2 O 3 , the synergistic modulation of these bimetals jointly augmented the light absorption of In 2 O 3 across various visible wavelength regions. Additionally, the introduction of Ni and Cu notably prolonged the lifetime of photogenerated carriers and facilitated the spatial separation of electrons and holes. The smaller radius of the doped Ni and Cu ions compared to In may have induced defect formation, leading to a stronger adsorption capacity. Our findings not only underscore the efficacy of transition metal co-doping in photocatalytic CO 2 reduction but also offer valuable insights into the design and fabrication of such catalysts.
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REACTIVE & FUNCTIONAL POLYMERS
·
2025
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IF 5.1
Yajie Zhang,Chuan Huang,Xingyuan Liao,Saiyaer Sidike,Mingming Guo,Yichuan Zhang
Carbonized polymer dots (CPDs) have been studied extensively for room temperature phosphorescence (RTP) due to their low cost, good biocompatibility and crosslink-enhanced emission effect. Although considerable achievements have been reached in recent years, it is still a formidable task to prepare long-lived RTP CPDs. Herein, the Arg-CPDs was introduced into a rigid boric acid (BA) matrix to enhance the RTP lifetime of the Arg-CPDs@BA composites. The nitrogen-rich arginine framework integrated with phosphorus doping enhances spin-orbit coupling and accelerates the intersystem crossing and promotes the generation of triplet excitons. The formed C B covalent bond between Arg-CPDs and rigid B 2 O 3 matrix restricts the vibration and rotation of CPDs, thus inhibiting the non-radiative transition of the triplet excitons and making the composite exhibit a relatively long-lived RTP emission of 983 ms (18 s for naked eyes). It was nearly seven times longer than that of the matrix-free Arg-CPDs. Besides, the potential applications in anti-counterfeiting and white light-emitting diodes were demonstrated.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Xiangyang Chen,Zhensen Liang,Aodi Hu,Minggang Zhao
L-Cysteine (L-Cys), a sulfur-containing amino acid, plays a crucial role in various biological processes. Rapid and accurate detection of L-Cys in the human body is significant for clinical diagnosis and drug analysis. However, classic electrochemical sensing mechanisms are usually based on redox reactions, and substances with similar redox properties in the serum can easily interfere with the detection process. In this study, we present a novel approach for the detection of L-Cys using Schottky barriers of Ni/Cu2O/Ag nanocubes. The electrode exhibits excellent selectivity towards L-Cys due to the specific interaction between Cu2O and L-Cys through the formation of Cu–S bonds. The Schottky barrier at the Cu2O/Ag interface, formed due to the difference in work functions, impedes electron transfer and can be modulated by the adsorption of charged L-Cys molecules. The introduction of light irradiation enhances the barrier modulation capability, resulting in improved sensitivity. Experimental results demonstrate that the Ni/Cu2O/Ag electrode exhibits a linear response to L-Cys concentration within 0–2400 nM at pH 3.0 and pH 7.0, with a low detection limit of 11.86 nM. The electrode shows excellent performance in real sample analysis, exhibiting high recovery rates and low relative standard deviations. The light-assisted barrier enhancement mechanism provides a new avenue for the development of highly selective and sensitive electrochemical sensors.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Shishu Sun,Tianyi Sun,Dashuai Zhang,Jinrui Liu,Liying Ren,Chuilong Chen,Wei Yao,Zaifeng Shi
In this paper, the synthesis, characterization, and photocatalytic performance of CuNi/TiO 2-x composites in the degradation of antibiotic Norfloxacin (NOR) under visible light were investigated. Compared to conventional TiO 2 , the composite catalyst demonstrated superior photocatalytic activity by introducing CuNi nanoparticles and oxygen vacancy in TiO 2 . The oxygen vacancy defect in titanium dioxide crystal reduced the band gap energy. In addition, the incorporation of Cu nanoparticles leveraging Surface Plasmon Resonance (SPR) and Ni nanoparticles as electron traps further markedly enhanced the electron-hole pair separation efficiency and solar energy utilization, catalyzing NOR degradation efficiently. Electron Spin Resonance (ESR) confirmed the generation of reactive oxygen species, which was pivotal to the NOR degradation. This study underscores the potential of bimetallic composites for environmental remediation, particularly in treating antibiotic-laden wastewater.
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ACS Biomaterials Science & Engineering
·
2024
·
IF 5.4
Shuming Liu,Chunhua Ge,Zhiqiang Li,Jinyao Shan,Keke Chen,Xuefeng Li,Yu Liu,Xiangdong Zhang
Digital light processing (DLP) 3D bioprinting technology has attracted increasing attention in tissue engineering in recent years. However, it still faces significant technical and operational challenges such as cell carcinogenesis caused by prolonged exposure to ultraviolet light and the presence of heavy metal ions in complex photoinitiator systems. In this study, a novel strategy is designed to introduce carbon quantum dots into visible-light-induced silk fibroin bioink as initiators (CDs/SilMA) applied for DLP 3D bioprinting technology. The incorporation of carbon quantum dots facilitates the formation of precise hydrogel structures at 415 nm visible wavelength, enabling the creation of brain, bronchus, spine, and ear models. Replacing heavy metal photoinitiators with carbon quantum dots imparts fluorescence properties to the bioink and enhances its mechanical properties. Meanwhile, the fibroin protein-based hydrogel exhibits favorable properties, such as drug loading, slow release, degradability, and biocompatibility. This is the first study to propose the application of carbon quantum dots in silk fibroin-based bioink. Moreover, the resulting product demonstrates excellent compatibility with the DLP printing process, making it promising for practical applications in various tissue engineering scenarios with specific requirements.
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RENEWABLE ENERGY
·
2025
·
IF 9.1
Kan Zou,Anjiang Gao,Yong Huang,Kuan Ding,Alexander N. Kozlov,Maxim V. Penzik,Xun Hu,Shu Zhang
Biomass pyrolysis oil holds great potential as a renewable transportation fuel, but it remains challenging to regulate the composition of bio-oils in scale-up reactors. In this paper, the components of bio-oil were regulated through controlled volatile-char interaction in a pilot-scale reactor. Meanwhile, combustion of bio-oil-diesel mixture was also performed. In an innovatively designed pilot-scale reactor, the volatile-char interaction was regulated by adjusting the feedstock layer height, significantly reducing the complexity of the light components in the bio-oil. The main components became phenols (over 74 %), with a small amount of ketones and furans. Intense volatile-char interaction converted ketones and phenols into furans, which was beneficial for hydrogenation. After hydrogenation, the alcohol content of light oil increased to 82%–93 %, enhancing its utilization value. When blended with diesel in a 5 % ratio, the mixed oil exhibited lower fuel consumption and emissions of CO, CO 2 , NO x , and smoke in engine combustion tests, with a higher exhaust temperature. The lower boiling point and viscosity of the mixed oil facilitated atomization in the engine, and its oxygen element participated in the combustion process, optimizing combustion performance and reducing pollutants emission. These findings provide important pilot-scale references for utilization of biomass pyrolysis oils as transport fuels.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Wang,Boxuan Yao,Wenjing Song,Junnan Zhang,Mingyang Zhou,Wei Hu,Lei Zhao,Jian Liu,Shenghong Yang
The flexible regulation of carbon dots (CDs) emission wavelengths through controlling single variable remains a significant challenge. In this study, we present a novel single-factor tuning preparation strategy for synthesizing full-color fluorescent CDs in an open, rapid and solvent-free reaction system. Tunable purple-to-red emission CDs were prepared within 5 min solely by adjusting o -phenylenediamine/dicarboxylic acid mass ratios. The production yields and quantum yield of CDs can reach up to 70.5 % and 34.1 %, respectively. Changing the reactants ratio affects the dehydration and carbonization. This led to an orderly red-shift in CDs emission wavelength. Detailed characterizations and theoretical calculations reveal key insight. The transformation in optical features correlates with a gradient increase in particle size. It also correlates with an increase in graphitic nitrogen and sp 2 -conjugated domains. These CDs exhibit excellent biocompatibility and stable fluorescence characteristics, making them successful for bioimaging applications in live cells and zebrafish embryos. Furthermore, leveraging the simplicity and solvent-free nature of the synthesis, full-color and high color rendering index (CRI > 83) white light LEDs with tunable color temperature were successfully fabricated, demonstrating substantial application potential for commercial lighting. The proposed single-factor solvent-free synthesis strategy may further improve the industrialization potential of CDs-based optical materials.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haonan Sun,Haifeng Ji,Danyang Qiao,Yang Xu,Xiongwei Qu,Yu Qi,Zhaochi Feng,Xiaojie Zhang,Fuxiang Zhang,Ruihu Wang,Beibei Dong
Covalent organic frameworks (COFs) are one type of good platforms for photocatalysis, but conflating three keys (light absorption, charge separation and catalytic conversion) of photocatalysis all in one photocatalyst for efficient photocatalytic water splitting remains challenging. Herein, we employ phenanthroline, the two nitrogen atoms of which have strong complexation competence to anchor metal cocatalysts, and trigonaldehydes to synthesize novel vinylene-linked COFs (PVCOFs) through the Aldol condensation reaction. PVCOFs exhibit wide visible light absorption capacity with absorption band edge at above 600 nm, and the optimized H 2 and O 2 evolution rates of PVCOF-1 are as high as 11,525 and 2056 μmol g −1 h −1 , respectively, which are much higher than those of the reported dual-functional COFs-based photocatalysts. The promising photocatalytic performance is attributed to high π-conjugation of vinylene linkage, which results in strong electron delocalization and eminent charge separation efficiency. The strong complexation competence of the nitrogen atoms in phenanthroline can anchor metal cocatalyst, permit efficient charge transfer in the COF/cocatalyst interfaces, and hasten catalytic conversion, thus improving the catalytic conversion efficiency and endowing phenanthroline-based COFs for photocatalytic water splitting for the first time. This work sheds new light on the vinylene-linked COFs photocatalysts for solar-to-chemical conversion.
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Polymers
·
2024
·Vol. 16
·期 3
·369
·
IF 4.7
Zhonghui Wang,Qiang Gao,Haihang Luo,Jianming Zhao,Haojun Fan,Yi Chen,Jun Xiang
In recent years, polyurethane has drawn great attention because of its many advantages in physical and chemical performance. In this work, firstly, polyurethane was impregnated in a non-woven fabric (NWF). Then, polyurethane-impregnated NWF was coagulated utilizing a wet phase inversion. Finally, after alkali treatment, microfiber non-woven fabrics with a porous polyurethane matrix (PNWF) were fabricated and used as substrates. SnIn4S8(SIS) prepared by a microwave-assisted method was used as a photocatalyst and a novel SIS/PNWF substrate with multiple uses and highly efficient catalytic degradation ability under visible light was successfully fabricated. The surface morphology, chemical and crystal structures, optical performance, and wettability of SIS/PNWF substrates were observed. Subsequently, the photocatalytic performance of SIS/PNWF substrates was investigated by the decomposition of rhodamine B (RhB) under visible light irradiation. Compared with SIS/PNWF-2% (2%, the weight ratio of SIS and PNWF, same below), SIS/PNWF-5% as well as SIS/PNWF-15%, SIS/PNWF-10% substrates exhibited superior photocatalytic efficiency of 97% in 2 h. This may be due to the superior photocatalytic performance of SIS and the inherent hierarchical porous structure of PNWF substrates. Additionally, the hydrophobicity of SIS/PNWF substrates can enable them to float on the solution and further be applied on an open-water surface. Furthermore, tensile strength and recycle experiments demonstrated that SIS/PNWF substrates possessed superior mechanical strength and excellent recycle stability. This work provides a facile and efficient pathway to prepare SIS/PNWF substrates for the degradation of organic pollutants with enhanced catalytic efficiency.
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Separations
·
2024
·Vol. 11
·期 9
·274
·
IF 2.5
Wenjun Xu,Qianyi Wang,Jintao He,Fuzhen Liu,Xiang Yan,Yin Xu
The development of appropriate and effective periodate (PI) activation technology is currently a popular research area. This study presents a novel efficient photocatalytic activation approach of PI for pollutant degradation based on carbon nitride (g-C3N4) and visible light (Vis). The results show that the system can remove 92.3% of acid orange 7 (AO7) within 60 min under the g-C3N4/PI/Vis reaction system. The degradation rate constant (kobs) reached 4.08 × 10−2min−1, which is 4.21,5.16 times, and 51.3 times higher than that of the g-C3N4/Vis system (9.7 × 10−3min−1), PI/Vis system (7.9 × 10−3min−1) and the g-C3N4/PI system (7.96 × 10−4min−1), respectively. Clearly, the addition of PI significantly enhances the degradation efficiency of AO7 in the system. Additionally, under the same reaction conditions, the presence of PI showed excellent oxidation capacity in the photoactivation process compared with other common oxidants, such as peroxymonosulfate, peroxydisulfate, and H2O2. Moreover, the g-C3N4/PI/Vis system showed excellent removal of AO7 across a wide range of pH levels and in the presence of various anions. Electron paramagnetic resonance (EPR) and quenching experiments suggested that the superoxide anions (•O2−) and singlet oxygen (1O2) dominated in the oxidation of pollutants in the g-C3N4/PI/Vis system. In addition, the catalyst showed relative stability during cyclic testing, although a slight reduction in degradation efficiency was observed. In brief, the g-C3N4/PI/Vis system is highly efficient and environmentally friendly, with significant application potential in wastewater treatment.
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