MATERIALS LETTERS
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2022
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IF 3.574
Ruifeng Ren,Pengfei Tan,Lu Yang,Huanhuan Zhai,Mingyuan Zhang,Jiaoyang Chen,Hele Liu,Jun Pan
The development of hollow tubular nanostructured photocatalysts has been identified as a research priority in the realm of photocatalysis. However, fabricating bismuth vanadate (BiVO 4 ) nanotubes, which are effective photocatalysts for water purification, remains challenging. The present work effectively produced uniform single-phase BiVO 4 nanotubes using a template-free approach. As a consequence of the unique hollow tubular structure, the prepared sample exhibited a high visible light absorption capacity and a large specific surface area, which improves photocatalytic efficiency. Within 120 min, a degradation rate of up to 70% of tetracycline hydrochloride was reached under visible light. This study will enrich the morphological diversity of BiVO 4 photocatalyst and promote the development of BiVO 4 -based photocatalysts.
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Journal of Materials Chemistry A
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2022
·Vol. 10
·期 24
·12968-12976
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IF 14.511
Boyu Cui,Hao Xie,Hao Sun,Tong Ji,Shuang Li,Xue Jia,Weihong Wang
Converting wheat straw waste into a high-performance material is necessary and challenging from the perspective of “waste to wealth” and green development. This study successfully fabricated an anisotropic ultrastrong, light-transmitting, and biodegradable film from wheat straw using the top-down strategy. The resulting wheat straw film (WSF) exhibited superb tensile strength (up to 754.34 MPa), specific strength (up to 580.26 MPa cm3 g−1), and toughness (up to 18.72 MJ m−3) due to the well-aligned cellulose nanofibers after the chemical treatment and densification. Moreover, the WSF exhibited remarkable transmittance (≈74%), haze (≈79%), and anisotropic optical properties. Considering its degradability and excellent performance, the full wheat straw-based film could be applied to sustainable biomass-based products (such as optoelectronic devices and flexible electronics).
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ACS Applied Materials & Interfaces
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2022
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IF 10.383
Jingda Zhao,Xin Wang,Yubing Xu,Yuzhu Pan,Yuwei Li,Jing Chen,Qing Li,Xiaobing Zhang,Zhuoya Zhu,Zhiwei Zhao,Elias Emeka Elemike,Damian C. Onwudiwe,Byung Seong Bae,Suhaidi Bin Shafie,Wei Lei
Dual-mode photodetectors (PDs) have attracted increasing interest owing to their potential optoelectrical applications. However, the widespread use of PDs is still limited by the high cost of epitaxial semiconductors. In contrast, the solution processability and wide spectral tunability of perovskites have led to the development of various inexpensive and high-performance optoelectronic devices. In this study, we develop a high-performance electronically modulated dual-mode PD with near-infrared (NIR) narrowband and visible light broadband detection based on organic–inorganic hybrid methylammonium lead halide perovskite (MAPbX3; MA = CH3NH3 and X = Cl, Br, and I) single crystals with a pnp configuration. The operating mode of the dual-mode PD can be switched according to voltage bias polarity because the photon absorption region and carrier transport performance are tuned at different bias voltages. The dual-mode PD exhibits a NIR light responsivity of 0.244 A/W and a narrow full width at half-maximum of ∼12 nm at 820 nm at positive voltages and an average visible light responsivity of ∼0.13 A/W at negative voltages. The detectivities of both modes are high (∼1012 Jones), and the linear dynamic range is wide (>100 dB). Our study provides a new method for fabricating multifunctional PDs and can expand their application in integrated imaging systems.
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高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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2022
·Vol. 38
·期 6
·1475-1481
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IF 2.726
Peng Hao,Jiang Jiaxin,Liu Yifang,Wang Xiang,Li Wenwang,Zheng Gaofeng
Asynchronized surface modification method based on coaxial electrospinning was developed to fabricate high-efficiency photodegradative nanofiber for water purification. TiO 2 nanoparticles assembled uniformly on the surface of polycaprolactone(PCL) nanofibers to form composite nanofibers through one step process. The maximal content of Ti element was 25.6%(mass fraction) in the PCL/TiO 2 composite nanofibrous membrane, which exhibited hydrophilicity and excellent photodegradation under visible light in water. The Rhodamine B dye degraded 96.17% in 120 min under visible light by the PCL/TiO 2 composite membrane. The adsorption behavior fitted Langmuir model well and indicated chemical related adsorption. This PCL/TiO 2 composite nanofibrous membrane has super degradation properties and displays great application potential to environmental protection.
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JOURNAL OF POLYMER RESEARCH
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2022
·Vol. 29
·期 2
·1-11
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IF 3.061
Gao He,Yuan Liemei,Liu Guojie,Gao Jun
Photochromic materials with stable properties during long-term use have a very broad application prospect. Herein, five kinds of spirooxazines (SO1-SO5) with antioxidant properties were successfully synthesized by blending and covalently bonding antioxidants. Then various photochromic polyacrylate laminating adhesives (PA1-PA7) with good fatigue resistance were prepared by incorporating spirooxazines into polyacrylate. Among them, this study used 2, 6 -di-tert-butyl-4-methylphenol (BHT) as the main antioxidant, and tris (2, 4-di-tert-butylphenyl) phosphite (168) as the auxiliary antioxidant. Upon ultraviolet (UV) activation, these PA films possessed superior photochromism and light responsiveness. Importantly, unlike traditional physical blending photochromic polymers, SO2 was successfully covalently bonded into PA through reaction (PA6), effectively improving the fatigue resistance and thermal stability of the PA film. Doping with BHT, it further improved the photochromic properties of the compound film (PA7).
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JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Yufang Li,Yangchun Feng,Hang Bai,Jinsong Liu,Dayuan Hu,Jiyu Fan,Honglie Shen
In recent years, large and small industries have discharged a multitude of organic pollutants into the environment, causing environmental pollution. Titanium dioxide (TiO 2 ) materials is very important photocatalyst as a result of its outstanding applications to remove organic contaminants from the environment. Nonetheless, the low utilization rate of visible light of TiO 2 has limited its application. To begin with, Black TiO 2 is produced by the magnesium thermal reduction method to promote the absorption of visible light, Subsequently, The black TiO 2 /SnO 2 composites are synthesized by chemical synthesis method to form a hetero-junction to augment the photocatalytic activity. The morphology, chemical composition, phase structure and photocatalytic degradation of Rhodamine B (RhB) under visible light irradiation were investigated. The morphological properties demonstrated that a Ti 3+ self-doped disorder layer forms on the surface of TiO 2 nanophase, and black TiO 2 nanoparticles are well decorated with SnO 2 nanoparticles. After 90 min of visible light irradiation, RhB has a photocatalytic degradation efficiency of 96.62%, which is 1.597 times that of TiO 2 nanoparticles, and its cycle stability is well beyond our expectation. The ameliorated photocatalytic degradation performance of TiO 2 /SnO 2 composite is ascribed to the formation of a "type Ⅱ heterojunction", which not only reinforces the absorption of visible light of black TiO 2 /SnO 2 nanoparticles, but also heightens the separation and transfer efficiency of the photogenerated carriers.
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ANALYTICAL CHEMISTRY
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2023
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IF 7.4
Cui Wang,Mengli Zhang,Lipeng Bai,Panpan Gai,Feng Li
The peroxidase (POD)-like nanozyme typically requires the addition of exogenous H2O2. To address the limitation, previous work mainly adopted a cascade strategy for H2O2 production. Herein, we propose a new light-driven self-cascade strategy to construct POD-like nanozymes without exogenous H2O2. The model nanozyme resorcinol–formaldehyde resin-Fe3+ (RF-Fe3+) is synthesized with the hydroxyl-rich photocatalytic material RF as the carrier to in situ chelate metal oxides, which can simultaneously achieve the functions of in situ H2O2 generation under irradiation and substrate oxidation via POD-like behavior. Notably, RF-Fe3+ exhibits high affinity to H2O2, attributed to the excellent adsorption ability and hydroxyl-rich feature of RF. Furthermore, the dual photoelectrode-assisted photofuel cell was further constructed with a high-power density of 120 ± 5 μW cm–2 based on the RF-Fe3+ photocathode. This work not only demonstrates the new self-cascade strategy of in situ generation of catalysis substrates but also provides an opportunity to extend the catalytical field.
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ACS Photonics
·
2023
·
IF 7
Panpan Hao,Wei Jiang,Mengjie Li,Mufang Li,Qiongzhen Liu,Liyan Yang,Yan Tan,Yuedan Wang,Dong Wang
A novel flexible photodetector using yarn-based phototransistors is reported for the first-time. Reduced graphene oxide (rGO) doped with poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) was prepared by simple solution processing and coated by tungsten disulfide quantum dots (WS2 QDs) for novel yarn-based phototransistors (YPTs). The transistor-based photodetector exhibits good p-type transistor behavior and high transconductance (4.7 mS). The YPTs with an rGO-PEDOT:PSS/WS2 QDs heterojunction as the photosensitive layer are regulated by different light wavelength, light power, and gate voltage with UV–visible light. It is observed that the highest photoresponsivity of the device (Rmax) is 4.42 × 102 A/W under 365 nm UV light, the maximum specific detectivity (D*max) is 2.86 × 1011 Jones, and the fast response and recovery times are 1.78 and 2.91 s under a broad wavelength range, respectively. This excellent performance can be attributed to the synergistic effect of the WS2 QDs/rGO-PEDOT:PSS composites. In addition, the fully flexible phototransistor prepared by composite nanomaterials coated on viscose yarn still maintains a stable performance under different bending states and has been successfully applied in the field of UV–visible visual detection and intelligent wearable optoelectronics. These results pave a simple route for the development of wearable, high-performance optoelectronic devices.
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CHEMISTRY OF MATERIALS
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2023
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IF 8.6
Meiqing Yang,Yuanchen Dong,Chuang Li
Living organisms operate far from equilibrium in order to maintain their adaptive structures and functions by continuous energy consumption. The development of synthetic out-of-equilibrium systems using light as an input fuel will allow for remote and noninvasive control over a range of important chemical/biological processes. Here, we report on the rational design of light-fueled DNA hydrogels that exhibit life-like nonequilibrium and dissipative features. Such hydrogels are formed through a two-component mixing strategy, where merocyanine photoacid bearing a robust pH-adjustment capability delicately imparts photoinactive but pH-sensitive DNA components with an adaptive response to light. The transient hydrogel spontaneously dissipates to its sol state in the dark, enabling a highly reversible sol–gel transition that is fine-tuned by irradiation conditions. We construct reprogrammable DNA hydrogel shapes/patterns by alternating the photopatterning/dark-erasing processes using a single recyclable ink. Our work provides a general waste-free approach to developing other light-fueled out-of-equilibrium hydrogels for applications in smart materials and soft robotics.
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FUEL
·
2023
·
IF 7.4
Rihong Xiao,Yili Zhang,Zhuo Xiong,Junying Zhang,Yongchun Zhao
Photocatalytic technology has the advantages of environmental friendliness, low energy consumption, and fast reaction speed, which can be applied in the field of visible light mercury removal. High stability and narrow bandgap are fundamental factors for ideal semiconductor photocatalysts. A novel method of hydrothermal synthesis of CQDs/2D-BWO composite catalyst to improve the oxidation efficiency of elemental mercury was proposed. The morphology, physicochemical properties, and optical performance of the materials were fully characterized. The experiment of Hg oxidation efficiency under visible light showed that C 2 /2D-BWO exhibited a Hg removal efficiency of was as high as 86.3 % under visible light and adequate cyclic stability. The effects of SO 2 and NO on Hg oxidation were also studied, and the reasons for the improved of photocatalytic activity of CQDs on 2D-BWO were analyzed based on DFT calculations. The reaction mechanism of the catalytic oxidation of Hg by C 2 /2D-BWO was proposed, and C 2 /2D-BWO was found to be an efficient and stable visible light catalyst.
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Biotechnology for Biofuels and Bioproducts
·
2023
·Vol. 16
·期 1
·1-13
·
IF 0
Zhang Yang,Meng Wenchang,He Yuting,Chen Yuhui,Shao Mingyu,Yuan Jifeng
Background Whole-cell biocatalysis has been exploited to convert a variety of substrates into high-value bulk or chiral fine chemicals. However, the traditional whole-cell biocatalysis typically utilizes the heterotrophic microbes as the biocatalyst, which requires carbohydrates to power the cofactor (ATP, NAD (P)H) regeneration. Results In this study, we sought to harness purple non-sulfur photosynthetic bacterium (PNSB) as the biocatalyst to achieve light-driven cofactor regeneration for cascade biocatalysis. We substantially improved the performance of Rhodopseudomonas palustris -based biocatalysis using a highly active and conditional expression system, blocking the side-reactions, controlling the feeding strategy, and attenuating the light shading effect. Under light-anaerobic conditions, we found that 50 mM ferulic acid could be completely converted to vanillyl alcohol using the recombinant strain with 100% efficiency, and > 99.9% conversion of 50 mM p -coumaric acid to p -hydroxybenzyl alcohol was similarly achieved. Moreover, we examined the isoprenol utilization pathway for pinene synthesis and 92% conversion of 30 mM isoprenol to pinene was obtained. Conclusions Taken together, these results suggested that R. palustris could be a promising host for light-powered biotransformation, which offers an efficient approach for synthesizing value-added chemicals in a green and sustainable manner. Graphical Abstract
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Nature Communications
·
2021
·Vol. 12
·期 1
·1-8
·
IF 14.919
Ling Huan,Wu Jianchang,Su Fengyu,Tian Yanqing,Liu Yan Jun
Electrochromic devices can modulate their light absorption under a small driving voltage, but the requirement for external electrical supplies causes response-lag. To address this problem, self-powered electrochromic devices have been studied recently. However, insensitivity to the surrounding light and unsatisfactory stability of electrochromic devices have hindered their critical applications. Herein, novel perovskite solar cell-powered all-in-one gel electrochromic devices have been assembled and studied in order to achieve automatic light adjustment. Two alkynyl-containing viologen derivatives are synthesized as electrochromic materials, the devices with very high stability (up to 70000 cycles) serves as the energy storage and smart window, while the perovskite solar cell with power-conversion-efficiency up to 18.3% serves as the light detector and power harvester. The combined devices can automatically switch between bleached and colored state to adjust light absorption with variable surrounding light intensity in real-time swiftly, which establish significant potentials for applications as modern all-day intelligent windows.
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