PEST MANAGEMENT SCIENCE
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2022
·Vol. 78
·期 8
·3277-3286
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IF 4.462
Renxuan Zou,Baoyu Li,Wengui Duan,Guishan Lin,Yucheng Cui
BACKGROUND Nanopesticides have been proved to be a powerful and promising tool to solve the issues in agriculture. The purpose of the present study was to develop ecofriendly nanopesticide systems by the strategy of comprehensive utilization of two natural biomass resources (bagasse and turpentine oil) because of their incomparable advantages. RESULTS In this research, a series of nanocellulose carriers ETOCN-1 – ETOCN-4 (ETOCN, esterified TEMPO-oxidized cellulose nanofibers) with different degrees of substitution were prepared and characterized by Fourier-transform infrared (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM). Then, 21 1,3,4-thiadiazole-amide compounds 8a – 8u containing gem -dimethylcyclopropane ring were designed, synthesized and characterized. A preliminary bioassay indicated that compound 8i (R = p -Br Ph) exhibited broad-spectrum antifungal activity against the tested fungi. Furthermore, drug-loading complexes 8i/ETOCN-1 – 8i/ETOCN-4 were fabricated by integration of nanocellulose-based carriers ETOCN-1 – ETOCN-4 with bioactive compound 8i , and the drug-loading capacities, microstructures and sustained-releasing performance of these complexes were also investigated. According to the observation of scanning electron microscopy (SEM) images of complex 8i/ETOCN-2 , the small-molecule drug and the carrier formed a well-distributed and compact complex, which led to the excellent drug-loading capacity and sustained-releasing performance in the ethanol/water (1:1, v/v ) system. CONCLUSIONS Complexes 8i/ETOCN-1 – 8i/ETOCN-4 deserved further study as the promising candidates for the development of nanopesticides. © 2022 Society of Chemical Industry.
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Journal of Materials Chemistry C
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2022
·Vol. 10
·期 22
·8815-8823
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IF 8.067
Runda Guo,Weizhuo Zhang,Xin Li,Linyuan Lian,Hongting Chen,Chencheng Peng,Liang Sun,Shiyuan Liu,Jianbing Zhang,Lei Wang
Blue emitting CsPb(Br–Cl)3 perovskite nanoparticles (NPs) play an important role in optoelectronic applications. However, the synthesis of stable blue perovskite NPs with excellent photoluminescence quantum yield (PLQY) is still challenging. Here, a new strategy of conveniently using strontium halides and amine halides for simultaneous doping and surface passivation of CsPb(Br–Cl)3 perovskite NPs is proposed. Through experimental studies and calculations, it is found that divalent Sr2+ cations can partly replace the B-site Pb2+ ions in the lattice structure of perovskite NPs and cause a slight lattice contraction, not only passivating the defects but also providing chances for bluer NPs. As a result, the deep-blue CsPb(Br–Cl)3 perovskite NPs with PL emission centered at 455 nm and a high PLQY of 96% were obtained. In addition, a white light-emitting device (WLED) with the NPs as an emissive layer exhibited a maximum power efficiency of 76 lm W−1 with Commission International de L’Eclairage (CIE) coordinates of (0.33, 0.34). These findings provide fundamental insights into the excited state dynamics of colloidal cesium lead halide (CsPbX3) perovskite NPs that can be used as components of LEDs for practical applications.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2022
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IF 5.895
Hang-Zhi Zhu,Shan Jiang,Jun-Jie Wu,Xue-Rong Zhou,Peng-Yang Liu,Feng-Hong Huang,Xia Wan
Astaxanthin is a highly value-added keto-carotenoid compound. The astaxanthin 3S,3′S-isomer is more desirable for food additives, cosmetics, and pharmaceuticals due to health concerns about chemically synthesized counterparts with a mixture of three isomers. Biosynthesis of 3S,3′S-astaxanthin suffers from limited content and productivity. We engineered Yarrowia lipolytica to produce high levels of 3S,3′S-astaxanthin. We first assessed various β-carotene ketolases (CrtW) and β-carotene hydroxylases (CrtZ) from two algae and a plant. HpCrtW and HpCrtZ from Haematococcus pluvialis exhibited the strongest activity in converting β-carotene into astaxanthin in Y. lipolytica. We then fine-tuned the HpCrtW and HpCrtZ transcriptional expression by increasing the rounds of gene integration into the genome and applied a modular enzyme assembly of HpCrtW and HpCrtZ simultaneously. Next, we rescued leucine biosynthesis in the engineered Y. lipolytica, leading to a five-fold increase in biomass. The astaxanthin production achieved from these strategies was 3.3 g/L or 41.3 mg/g dry cell weight under fed-batch conditions, which is the highest level reported in microbial chassis to date. This study provides the potential for industrial production of 3S,3′S-astaxanthin, and this strategy empowers us to build a sustainable biorefinery platform for generating other value-added carotenoids in the future.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Gaozu Liao,Peng Xu,Ping Lu,Xiaojiao Qing,Zhanjiang Yu,Yu Chang,Weirui Chen,Yiming Tang,Jing Wang,Xi Wang,Xukai Li,Laisheng Li,Dehua Xia
Single Co atoms dispersed on CMK-3 was synthesized and employed as efficient catalyst to degrade APAP in O 3 /PMS process. The results of morphology and structure characterization indicated that the as prepared catalyst possessed uniform array of mesoporous channel structure with a long-range. Co atoms were single atomic dispersed in CMK-3 skeleton with the form of CoN 4 coordination. The BET surface area and average pore diameter of 3.6% SA Co/CMK-3 were measured as 956 m 2 /g and 3.6 nm, respectively. For APAP degradation by 3.6% SA Co/CMK-3 + PMS/O 3 process, TOC removal efficiency reached to 60% and 78.9% in initial 1 min and 15 min, respectively. The influence of initial pH was investigated and demonstrated that APAP could be efficiently mineralized in a wide pH range. In addition, high mineralization rates were also achieved for other refractory organics (nitrobenzene and sulfamethoxazole). Radical quenching experiments and ESR indicated that SO 4 •− , •OH and 1 O 2 were all responsible for APAP degradation. DFT simulations elucidated that single Co atoms and N-heteroatoms on 3.6% SA Co/CMK-3 served as dual reaction sites for PMS and O 3 decomposition, which enhanced the ROS generation and APAP mineralization.
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PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
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2023
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IF 4.7
Wenjuan Zhang,Zimeng Zhang,Cun Li,Xiaoxue Yu,Qing He,Chunxue You,Daowen Li,Qianying Liu,Jiaqi Zhang
Essential oils (EOs) and their volatile secondary metabolites have been proved to be effective on storage pests control, while restricted on the application due to unclear mechanism. Molecular dynamics (MD) simulations and binding free energies analysis provided an effective approach to reveal mechanism on conformational calculation. In this work, the insecticidal and repellent capacities of Praxelis clematidea and Ageratum houstonianum oils and their main components identified by gas chromatography–mass spectrometry (GC–MS) were scientifically measured. Interestingly, P. clematidea oil exhibited strong fumigant toxicity against Tribolium castaneum (LC 50 = 7.07 mg/L air). Moreover, two EOs exhibited over 80% repellent rate against T. castaneum at the highest concentration of 78.63 nL/cm 2 . Furthermore, hundreds of enzymes related to the regulation of biological processes of T. castaneum were screened to explore the underlying molecular mechanism and develop promising insecticides. Besides, top hits were subjected to MD simulations and binding free energies analysis to elucidate complex inter-molecular stability and affinity over simulated time. The results demonstrated that isolongifolene, δ -cadinene, β -caryophyllene and caryophyllene oxide were prioritized as they were establishing conserved and stable interactions with residues of nuclear hormone receptor 3 ( TcHR3 ) of T. castaneum , which suggested that the four sesquiterpenes have potential to be promising insecticides on storage pests control.
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FOOD AND CHEMICAL TOXICOLOGY
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2023
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IF 4.3
Xueqin Wang,Zhenzhen Cui,Yuan Luo,Yu Huang,Xinbin Yang
Xanthine oxidase (XO), a key enzyme in purine catabolism, catalyzes the oxidation of xanthine to uric acid in the body, but overproduction of uric acid may lead to hyperuricemia . This study aims to investigate in vitro XO inhibitory and in vivo anti-hyperuricemic properties of sodium kaempferol-3′-sulfonate (KS). The kinetic analysis indicates that KS is a reversible competitive inhibitor and has significant inhibitory effects on XO activity with an IC 50 value of 0.338 μM. Fluorescence spectra suggested that KS could cause fluorescence quenching and conformational changes of XO due to the formation of a KS-XO complex. Molecular docking studies demonstrated that KS interacted with several amino acid residues of XO by the π-π stacking, hydrogen bonds , and hydrophobic interactions. The inhibitory mechanism of KS on XO activity might be the insertion of KS into the active site of XO to prevent the entrance of the substrate xanthine and induce conformational changes of XO. The results carried out in hyperuricemic mice showed that KS reduced serum XO activity, serum uric acid (UA), creatinine (CRE), and urea nitrogen (BUN) levels, as well as alleviating renal histopathological injury. These findings suggest that KS may be a new potent XO inhibitor against hyperuricemia-related diseases.
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ACS Applied Energy Materials
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2021
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IF 6.024
Deyu Gao,Mengjia Li,Liqun Yang,Chenglin Wang,Xueni Shang,Xiaohui Ma,Cuncun Wu,Boxue Zhang,Hongwei Song,Cong Chen
Defects in the perovskite photoactive layer will cause severe non-radiative recombination and lead to severe efficiency loss and stability degradation. In this work, a type of cation, 3-APA+, was added to the perovskite precursor to passivate the cation defect and interface/surface defects. Our results reveal that incorporating 3-APA+ with amino and carboxyl functional groups could enhance electronic properties of the interfacial and bulk due to a more efficient charge transfer between the bulk and interfaces and the reduced electronic defect energy levels. The hybrid cation-based perovskite film exhibits a longer photoluminescence lifetime and a lower density of trap states, indicating the effectively passivated vacancies, thus reducing the non-radiative recombination pathway. In addition, the bifunctional group can cross-link the perovskite grains through hydrogen bonds to form a dense perovskite film with a larger grain size. Consequently, the best performing devices with an optimized power conversion efficiency of 20.4% showed an efficiency loss of only 7% at a maximum power tracking of 2000 s at full sunlight intensity. Therefore, directly adding 3-APA+ to the precursor can provide ideas for passivating defects in the perovskite material and improving its stability.
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Nanomaterials
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2021
·Vol. 11
·期 12
·3242
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IF 5.076
Yu Sun,Jin Chen,Fengchao Wang,Yi Yin,Yan Jin,Jun Wang,Xiaogai Peng,Ruiyi Han,Canyun Zhang,Jinfang Kong,Jing Yang
Nowadays, Mn-doping is considered as a promising dissolution for the heavy usage of toxic lead in CsPbX3perovskite material. Interestingly, Mn-doping also introduces an additional photoluminescence band, which is favorable to enrich the emission gamut of this cesium lead halide. Here, a solution spraying strategy was employed for the direct preparation of CsPbxMn1−x(Br,Cl)3film through MnCl2doping in host CsPbBr3material. The possible fabrication mechanism of the provided approach and the dependences of material properties on Mn-doping were investigated in detail. As the results shown, Pb was partially substituted by Mn as expected. With the ratio of PbBr2:MnCl2increasing from 3:0 to 1:1, the obtained film separately featured green, cyan, orange-red and pink-red emission, which was caused by the energy transferring process. Moreover, the combining energy of Cs, Pb, and Mn gradually red-shifted resulted from the formation of Cs-Cl, Pb-Cl and Mn-Br coordination bonding as MnCl2doping increased. In addition, the weight of short decay lifetime of prepared samples increased with the doping rising, which indicated a better exciton emission and less defect-related transition. The aiming of current work is to provide a new possibility for the facile preparation of Mn-doping CsPbX3film material.Keywords:MnCl2doping;CsPbxMn1−x(Br,Cl)3;thin films;solution spraying
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ACS Applied Nano Materials
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2021
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IF 5.097
Zhentong Han,Yaxin Zhao,Haoji Jiang,Ao Sheng,Hao Li,Hao Jia,Zhiyuan Yun,Zhong Wei,Heyun Wang
The present study eliminated nonselective defects by amending the MOF-based mixed matrix membrane (MMM) interface with (3-aminopropyl) triethoxysilane (APTES) via Schiff’s base reaction. This modification on the ZIF-90 nanoparticle surfaces enhanced the polydimethylsiloxane (PDMS) matrix interaction in the MMMs. Interfacial defects were then minimized through APTES-ZIF-90 nanoparticle surface alkoxy and PDMS chain hydroxyl group cross-linking. Enhanced chemical interactions between the nanoparticles and the polymeric matrix in the APTES-ZIF-90/PDMS MMMs resulted in higher interface compatibility and separation performance than the ZIF-90 nanoparticle MMMs, which ultimately improved its ethanol affinity and hydrophobicity. When the load of APTES-ZIF-90 nanoparticles was 15% and the temperature was 40 °C, the pervaporation performance of APTES-ZIF-90/PDMS MMMs was optimal, the separation factor was 16.8, and the permeation flux was 223 g/(m2·h). Compared with pure PDMS, the separation factor and permeation flux increased by 91 and 67%, respectively. In addition, stable APTES-ZIF-90/PDMS MMM pervaporation performance was observed after an optimal operation time of 120 h. Overall, the present work presented methods to optimize MOF-based MMMs for enhanced interface morphology and separation performance for ethanol recovery.
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ACS Applied Materials & Interfaces
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2021
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IF 9.229
Jiapin Liu,Yun Huang,Zhixing Zhao,Wenhao Ren,Zhuangzhi Li,Chao Zou,Ling Zhao,Zhaomin Tang,Xing Li,Mingshan Wang,Yuanhua Lin,Haijun Cao
The sodium super ion conductor (NASICON) structure materials are essential for sodium-ion batteries (SIBs) due to their robust crystal structure, excellent ionic conductivity, and flexibility to regulate element and valence. However, the poor electronic conductivity and inferior energy density caused by the nature of these materials have always been obstacles to commercialization. Herein, using yeast as a template to derive NASICON structure Na3MnTi(PO4)3 (NMTP) materials (noted as Yeast@NMTP/C) is presented. The Yeast@NMTP/C material retains the microsphere morphology of the yeast template and not only controls the particle size (around 2 μm) to shorten the Na+ diffusion pathways but also improves the electronic conductivity to optimize the electrochemical kinetics. The Yeast@NMTP/C cathode delivers reversible multielectron redox reactions including Ti4+/3+, Mn3+/2+, and Mn4+/3+ and exhibits a high capacity of 108.5 mAh g–1 with a 79.2% capacity retention after 1000 cycles at a 2C rate. The sodium storage mechanism of Yeast@NMTP/C reveals that the addition of Ti4+/3+ redox plays a key role in improving the Na+ diffusion kinetics, and both solid-solution and two-phase reactions take place during the desodiation and sodiation process. Additionally, the high-rate and long-span cycle performance of Yeast@NMTP/C at 10C is ascribed to contribute to pseudocapacitance.
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Environmental Science-Nano
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2021
·Vol. 8
·期 12
·3590-3602
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IF 8.131
Yu Sun,Guanghua Lu,Peng Zhang,Xin Ling,Ranran Zhou,Zhenhua Yan,Jianchao Liu
The environmental behavior of pollutants in water is associated with aquatic colloids, especially organic colloids, which may be swallowed by aquatic organisms. In this study, bovine serum albumin (BSA) and phycocyanin (PCA) as organic protein colloids were used to evaluate their impacts on the accumulation and biotoxicity of benzophenone-3 (BP3). A bioaccumulation kinetic model based on daphnids (Daphnia magna) and zebrafish (Danio rerio) was established to quantify the effects of colloids on the different absorption pathways for BP3. When the freely dissolved concentration of BP3 was fixed at 100 μg L−1, environmentally relevant concentrations of colloids always acted as a carrier in the intestine, transferring BP3 to lipids, and the positive carrier efficiency decreased with the increase of colloid concentration. Protein colloids also enhanced passive absorption, of which the efficiency increased with colloid concentration. However, the contribution of the carrier effect of colloids in the intestine was almost negligible. Two aquatic organisms obtained BP3 mainly from water, and the upper limit of bioaccumulation in the colloid matrix was dependent on the absorption of colloid–BP3 by organisms or the mass transfer on the surface of organisms. Besides, BP3 caused thyroid hormone content and gene expression disorders on the hypothalamus–pituitary–thyroid axis in zebrafish larvae. The opposite colloid concentration dependence of gene expression was observed for BSA and PCA. The colloids may affect the active BP3 concentration in organisms through their adsorption and desorption behaviour outside and inside organisms, thereby affecting the toxicity of pollutants. This study suggests reconsidering the true ecological risks of pollutants bound to organic colloids in natural environments.
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CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Xingrui Pu,Xing Cheng,Qiaohong Yan,Yueming Lin,Rentai Yan,Ruize Yang,Xiaohong Zhu
The need to develop safe solid-state lithium batteries has stimulated intense research efforts for Li + solid electrolytes. However, the low conductivity limits the development of NASICON LiZr 2 (PO 4 ) 3 (LZP) electrolyte. Here, the doping effects of Ta on the structure, surface morphologies and electrochemical properties of Li 1- x Zr 2- x Ta x (PO 4 ) 3 (LZTP, x = 0, 0.01, 0.02, 0.04, 0.06 and 0.08) solid electrolyte were analyzed. LZTP was prepared using a simple solid-state reaction route, followed by sintering at 1200 °C for 12 h. A proper content of Ta 5+ substitution for Zr 4+ is beneficial to stabilize the high conductive rhombohedral (α) phase of LZP at room temperature. Doping Ta 5+ is conducive to unblocking of Li + at the M1 site and facilitates the occupation of Li + at the M2 site, thereby expanding the pathway for Li + conduction. Rietveld refinement data demonstrated that the Zr–O and P–O bond lengths ( d Zr-O and d P-O ) increased with a decrease in Zr–O–P bond angles ( θ Zr-O-P ) as x rose. The distortions in the ZrO 6 octahedron may weaken the coulomb attraction in Li + -O 2- , resulting in a lower activation energy ( E a ) and a higher Li + conductivity. The highest room-temperature conductivity (6.06 × 10 −5 S cm −1 ) was obtained at x = 0.06, which reached 1.5 × 10 −4 S cm −1 at 50 °C. The E a was found to decrease from 0.388 eV ( x = 0) to 0.306 eV ( x = 0.06). In addition, Ta doping resulted in improved connectivity and reduced pore formation, which also contributed to the decrease in resistance. The Raman spectrum demonstrated that some phonon modes of bending vibration in PO 4 were degenerate and external modes became too weak to be observed or even disappeared as Ta content increased. This change in the modes also had an impact on the Li + conductivity. Overall, the LZTP-0.06 appears to be a promising candidate for the solid electrolyte.
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