JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Tao Liu
The indiscriminate discharge of wastewater containing a large amount of organic solvents has led to increasingly serious water pollution problems. Although absorbents-based removal methods can effectively remove organic solvents from water, the currently used absorbents have the problem of complex preparation processes. This work uses green polydimethylsiloxane (PDMS) to propose a simple dip-coating method to directly transform discarded young coconut husk (YCH) into an absorbent, PDMS-coated YCH, which directly avoids multiple synthesis steps and the use of harmful chemicals. Relying on the water repellency provided by PDMS, the absorbent has the ability to remove organic solvents from water, showing an excellent organic solvents-water separation capability. After this absorbent is used continuously 15 times, the adsorption removal efficiency of the absorbent remains at 99.2% and it also retains its own structural characteristics, demonstrating outstanding recyclability. Not only that, the prepared absorbent also has excellent self-cleaning and anti-fouling ability, showing good practical application potential. This work not only uses more environmentally friendly synthetic materials but also proposes a simpler method for preparing absorbents, which can be applied to the development and utilization of other types of agricultural waste biomass.
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高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Yu-Cheng Liu,Rong Zou,Wen-Wu Liu,Chong-Yang Cui,Yi-Xiao Lei,Cai-Xia Li,Sheng-Tao Niu,Zhi-Qiang Xu,Wei-Qian Chen,Wen-Jun Niu,Mao-Cheng Liu,Ming-Jin Liu,Bingni Gu,Fen Ran,Yu-Lun Chueh
Insertion of an inorganic HTM intermediate at the CsPbBr 3 /Carbon interface can significantly improve photo-generated holes extraction efficiency without sacrificing advantages in device stability. Herein, low-cost and eco-friendly Co 3 O 4 nanocrystals were synthesized by precipitation method and utilized as efficient inorganic HTM for CsPbBr 3 PSCs . By regulating the hole quasi-fermi level (E f, HTL ) of the perovskite film with Co 3 O 4 nanocrystals possessing a lower conduction band (CB), the built-in electric field (BEF) inside the CsPbBr 3 can be reinforced, for which the Co 3 O 4 -induced energy level reconstruction facilitates fast charge separation and extraction because of the intensified driving force. In addition, the charge recombination behavior can be effectively inhibited. Finally, all inorganic CsPbBr 3 PSCs with an architecture of FTO/ c -TiO 2 / m -TiO 2 /CsPbBr 3 /Co 3 O 4 /carbon PSC realizes efficiency of 8.92% with an open-circuit voltage ( V oc ) of 1.531 V. Furthermore, the unencapsulated Co 3 O 4 -based PSC exhibits excellent stability in ambient air, keeping 98% of its initial efficiency after 90 days in 80% high humidity condition, and 97% of initial efficiency after 40 days in a high-temperature atmosphere of ∼80 °C.
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Chemical Engineering and Processing-Process Intensification
·
2023
·
IF 4.3
Qiang Liu,Jia-Ni Zhang,Ting-Liang Xie,Shi-Xiao Wei,Hao-Tian Tong,Shuang-Feng Yin
The average size and particle size distribution (PSD) of zeolitic imidazolate frameworks (ZIFs) (such as ZIF-8, ZIF-67) are closely related to their physical and chemical properties. However, it is difficult to prepare small ZIFs with narrow PSD in traditional batch reactors owing to poor mixing efficiency. Here, a four-stage oscillating feedback microreactor (FOFM) was developed to prepare ZIFs by microemulsion method. CFD simulations and visualization experiments were conducted to investigate liquid-liquid two-phase flow patterns involved, demonstrating that chaotic advection can be effectively produced, thus dispersed phase is broken up into small droplets and homogeneous microemulsions are obtained. The proposed microemulsion method based on FOFM enables preparation of ZIF-8 with small average size (38.2 nm) and narrow PSD ( σ g = 1.24) without surfactant at a flow rate of 90 mL/min.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Yuwei Duan,Jungang Wang,Dongfang Xu,Peigen Ji,Hui Zhou,Yong Li,Shaoming Yang,Zhuang Xie,Xiaohu Hai,Xuruo Lei,Rui Sun,Zihao Fan,Ke Zhang,Shengzhong Liu,Zhike Liu
To simultaneously stabilize cesium lead triiodide (CsPbI 3 ) precursor solution and passivate the defects in CsPbI 3 film is greatly significant for achieving highly stable and efficient CsPbI 3 perovskite solar cells (PSCs). Herein, an effective redox 4-fluorobenzothiohydrazide (FBTH) is developed to stabilize the precursor solution and passivate iodine/lead-related defects for high-quality CsPbI 3 film. The comprehensive research confirms that 1) a new compound FBTH-I is obtained from an effective redox interaction between FBTH and molecular iodine (I 2 ) in perovskite precursor solution, which can effectively impede the formation of I 2 molecule and restrain I − migration in perovskite film by forming N–H···I bond; 2) FBTH-I can also passivate Pb-related defects via forming S···Pb interaction. Consequently, the CsPbI 3 PSC based on FBTH-treated precursor solution exhibits a fascinating power conversion efficiency (PCE) of 21.41%, which is one of the highest PCE values among the reported pure CsPbI 3 PSCs so far, and an outstanding stability against the harsh conditions, such as thermal annealing and continuous light-illumination.
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Advanced Optical Materials
·
2023
·
IF 9
Leying Zha,Lei Ning,Zeyuan Sun,Lixin Song,Pingfan Du,Jie Xiong
In perovskite solar cells (PSCs), the buried interface between the electron transfer layer (ETL) and perovskite (PVK) layer profoundly affects the charge carrier transfer efficiency, which has significant implications for the efficiency and long-term stability of the device. Herein, an organic chemical compound 4,6-diamino-2-mercaptosine (DMP) is incorporated into the ETL/PVK interface in order to optimize the interfacial performance through a hydrogen bond bridging junction. DMP is tightly anchored to the ETL surface by forming the intermolecular hydrogen bonding with the structure as N─H∙∙∙N. This bridge connection is beneficial for enhancing the interface contact, further restraining severe nonradiative charge recombination. Synchronously, the interaction of ─SH with uncoordinated Pb 2+ passivates the defects on the bottom layer of perovskite, further regulating the perovskite crystal growth. Overall, the results express that the power conversion efficiency (PCE) of PSCs based on the DMP interface has significantly increased to 21.65% without obvious hysteresis. Meanwhile, the unencapsulated modified devices show superior environmental stability, maintaining over 85% of their initial PCE even after 500 h in an atmospheric environment.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Ruojin Zheng,Xiaoyan Gan,Kegui Li,Shenhao Zhang,Maling Xiang,Liling Guo,Hanxing Liu
In recent years, the extensive exploration of two-dimensional (2D) perovskites in the perovskite solar cell field has been driven by their remarkable humidity stability and tunable optoelectrical properties. However, the device performance in solar cells is hampered by the constraints posed by the quantum and dielectric confinement effects. In this study, ethanolamine (EA + ) with a high dielectric constant was introduced as a spacer cation to fabricate 2D perovskite (EA) 2 (MA) 4 Pb 5 I 16 films. The investigation focused on evaluating the influence of various additives on the crystallinity , surface morphology , light absorption capacity, and carrier lifetime of EA + -based perovskite thin films . By incorporating MACl as an additive, we achieved smooth and compact perovskite thin films of superior quality, leading to perovskite solar cells (PSCs) with a remarkable photovoltaic efficiency of 10.24%. Furthermore, the unencapsulated (EA) 2 (MA) 4 Pb 5 I 16 -based device maintained 83% of its original efficiency after 840 h of storage in ambient conditions, outperforming the 2D perovskite counterpart that employed phenethylamine (PEA + ) as the spacer cation with a dielectric constant of 3.314. These results convincingly demonstrate that the strategic incorporation of high dielectric constant organic cations into 2D PSCs offers a promising avenue for elevating their efficiency and humidity stability.
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 45
·16085-16093
·
IF 6.4
Xin Sun,Minghui Yin,Ruixue Xu,Zhiwei Fu,He Zhu,Qikai Guo,Yang Li,Chao Li,Yan Li,Kai Qian
As intrinsically stretchable materials for flexible electronics construction, liquid metal (LM) based composite conductors face challenges to achieve a high conductivity with minimum resistance increase due to the large dimensional change and poor wettability under a large tensile strain. To address this issue, a super-stretchable eutectic gallium indium (EGaIn) foamed elastomer composite is prepared with the assistance of a sugar template and O2 plasma treatment, and displays a marginal resistance change of only ∼31.3% under a large strain of 500% due to the reorientation and elongation of the conductive network. The EGaIn conductor exhibits superior properties of a high uptake of LM and conductivity enhancement from ∼2.38 × 104 (0% strain) to ∼2.97 × 105 S m−1 (500% strain) due to the strong capillary force during stretching. This work is a significant step toward high-performance stretchable conductors, demonstrating great potential in multifunctional device development including self-powered nanogenerators, electromagnetic interface (EMI) shielding, and thermal regulators.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Huihui Xie,Qixu Hu,Junzi Huang,Min Liu,Peng Wei,Yahong Xie,Ying Qi
The plasmonic property of metal nanoparticles could improve the photovoltaic performance of perovskite solar cells (PSCs). In this work, the plasmonic Au nanoparticles (Au NPs) was introduced into the SnO 2 electron transport layer (ETL), improving the photovoltaic performance of perovskite solar cells (PSCs) based on carbon electrode by approximately 26.28 %. The device structure is the FTO glass/SnO 2 /perovskite (CH 3 NH 3 PbI 3 )/carbon electrode. By optimizing the volume of Au NPs, the photocurrent of PSCs increased from 18.49 mA cm −2 to 23.25 mA cm −2 by 25.74 %, and the power conversion efficiency (PCE) from 10.96 % to 13.84 % by 26.28 %. The improved performance of the device is due to the local surface plasmon resonance (LSPR) of Au NPs, which enhances the optical absorption in the perovskite layer and improves the conductivity of the electron transport layer (ETL). Fluorescence spectroscopy showed that PSCs containing Au NPs reduced the recombination of electron and hole between the interface of ETL and perovskite and could transmit charge faster than PSCs without Au NPs. These results indicate that the plasmonic metal nanoparticles can greatly improve the efficiency of PSCs.
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INTERNATIONAL JOURNAL OF PHARMACEUTICS
·
2023
·
IF 5.8
Wendi Liang,Yingzhen Fan,Yinghui Liu,Ting Fang,Jian Zhang,Yuyi Xu,Ji Li,Dongkai Wang
The high level of reactive oxygen species (ROS) at the tumor site has been widely used in the tumor targeted delivery. However, the ROS stimulus-responsive vector itself is also a ROS consumer, and the consumption of endogenous ROS may not be sufficient to maintain sustained drug release. In this study, we designed and synthesized ROS/pH dual-sensitive polymer micelles for the co-delivery of emodin (EMD) and chlorambucil (CLB). The release of quinone methides (QM) can consume GSH, on the one hand, it can enhance the chemotoxicity of phenylbutyrate nitrogen mustard, on the other hand, emodin can induce oxidative damage of tumor cells and maintain the sustained targeted release of drugs.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiaoying Feng,Yixin Kuang,Suxin Zhou,Juan Zheng,Gangfeng Ouyang
The substitution position of functional group is potential to affect the microstructure and adsorption performance of functionalized polystyrene (PS) nanospheres, yet to be explored. In this study, a series of hyper-crosslinked PS nanospheres with isomeric chlorine substitution have been prepared by emulsion polymerization and Friedel-Crafts reaction. The detailed characterizations indicated that the substitution position of chlorine greatly influenced the pore volume and specific surface area of constructed PS nanospheres, and the hyper-crosslinked ortho -Cl-functionalized nanospheres ( o - x ClFNs) possessed the highest specific surface area and largest pore volume, followed by para - and meta -Cl-functionalized nanospheres ( p - x ClFNs and m - x ClFNs). Besides, these PS nanospheres were fabricated as even solid phase microextraction (SPME) coatings to study their extraction performance for substituted benzenes, chlorobenzenes, polychlorinated biphenyls (PCBs) and polybrominated biphenyls (PBBs). The experimental results showed that the p - x ClFNs possessed the most outstanding extraction efficiencies for halogenated organic pollutants, and it was combined with gas chromatography-mass spectrometry (GC–MS) to develop a highly sensitive method, realizing the precise quantifications of trace PCBs and PBBs in environmental water. Our work provided invaluable insights on the choice of functional monomer to construct high-performance adsorbent, also demonstrated the important function of PS on the enrichments of organic pollutants.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Xiangfen Xue,Mingjie Wei,Jing Yuan,Xinyu Huang,Qinghua Cao,Changkun Xia,Xiangheng Niu,Xiulian Yin
A convenient, fast, low-cost detection and discrimination method is demanded for environmental monitoring but still it remains more technological challenges. Herein, we demonstrate that the inner filter effect (IFE), in combination with three-dimensional fluorescence spectroscopy, can offer a virtual sensor array (VSA) as a proper solution. And with the aid of pattern recognition techniques, it is feasible to recognize compounds with structural similarities economically and effectively. In this study, with the help of visual clustering plots of principal component analysis (PCA), a prediction model based on hierarchical strategy was made using support vector machine (SVM) method for the qualitative profiling of aromatic pollutants. The VSA was constructed by a single metal–organic framework (MOF) recognition unit (MOF-74 (Zn)) with the excitation wavelength as external regulatory factors. Pattern characteristics of four aromatics with very similar structures (phenylamine, chlorobenzene, nitrobenzene, and phenol), both single analyte and binary mixtures, were acquired. The primary constituents of multi-dimensional spectral signals were subsequently extracted and fed into a vector machine to construct a prediction model through 10-fold cross-validation optimization, resulting in a classification accuracy of 100% for single analytes and 96% for mixtures. Quantitative research has shown that, except for chlorobenzene, all three other analytes can be predicted in concentration within an acceptable error range, and the mixture can be predicted proportionally. Moreover, the VSA can be used to distinguish these pollutants in tap and river water also. We propose for the first time a new tack for the construction of VSA in a general manner, namely using three-dimensional full range fluorescence scanning for IFE based sensing to get multiple times of information resulting from different weak interaction between analyte and sensor for decision-making.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·
IF 4.5
Wang Ying,Ye Qiufeng,Hang Pengjie,Yao Yuxin,Li Biao,Kan Chenxia,Zhang Daoyong,Yu Xuegong,Yang Deren
Full-inorganic CsPb(I x Br 1- x ) 3 (0 < x < 1) optoelectronic devices have given rise to widespread interest of researchers owing to their excellent photovoltaic properties and promising thermal stability. However, defects at the interface between the electron transport layer (ETL) and the perovskite layer cause the open-circuit voltage ( V OC ) deficiency for inorganic perovskite solar cells (PSC). In this work, Baclofen (BCF), with carboxy group, amidogen group, and Cl in its molecule, is used as an interlayer between SnO 2 and CsPb(I x Br 1- x ) 3 inorganic perovskite. It is proved that the BCF can not only be beneficial for the growth of perovskite film but also act as a passivation layer for the SnO 2 /perovskite (PSK) interface, which significantly improves the open-circuit voltage of PSCs. Finally, a high V OC of 1.31 V and a power conversion efficiency (PCE) of 15.36% are realized for our BCF-treated PSCs.
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