JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 8
·3551-3567
·
IF 4.5
Yang Xia,Wei Songrui,Ma Xilong,Gao Zhuwei,Huang Wei,Wang Dun,Liu Zhongxin,Wang Jieqiong
The photothermal process exhibits the largest energy conversion efficiency among all solar energy utilization processes. In this study, a core–shell CoTiO 3 @MnO 2 (CTM) composite photothermal catalyst was synthesized by supporting MnO 2 on CoTiO 3 by hydrothermal synthesis. Binding to peroxymonosulfate (PMS) heterogeneous catalyst removed tetracycline in wastewater. The new catalyst was characterized by FT-IR, UV–Vis, XRD, BET, SEM, TEM, and so on. Kinetic analysis showed that CTM activated PMS at a rate of 3.2 and 3.5 times higher than that of pure light and heat conditions, with complete degradation of tetracycline (TC). Since the outer MnO 2 layer converted the absorbed solar energy into thermal energy, PMS was activated to generate active species while performing electron transfer, which resulted in a considerably improved catalytic efficiency. To prove the wide applicability of the catalyst, other pollutants were degraded, including bisphenol A (BPA), metronidazole (MNZ), and methyl orange (MO). The three pollutants were degraded within 40 min. Finally, our findings demonstrated the mechanism of the photothermal degradation process and provided a novel approach for environmental remediation using renewable solar energy.
Graphical Abstract In this paper, the degradation efficiency of CoTiO 3 was improved by loading MnO 2 on CoTiO 3 . Binding to peroxymonosulfate (PMS) heterogeneous catalyst activation for the catalytic degradation of tetracycline. It was found by experiments that the core-shell structure of the composite material CoTiO 3 @MnO 2 had better photothermal catalysis efficiency than photocatalysis and thermal catalysis.
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2023
·Vol. 66
·期 4
·1539-1550
·
IF 8.1
Zhan Weiqing,Zhang Haoqi,Lyu Xiaolin,Luo Zhong-Zhen,Yu Yan,Zou Zhigang
Ionogels have attracted much attention in recent years because of their good thermal stability, high ionic conductivity, and non-volatility. However, there is a trade-off between the mechanical strength and stretchability of ionogels, which results in unsatisfactory mechanical performance. Herein, strong polymer crystallization and weak ion-dipole interaction are combined to prepare an ultra-tough and super-stretchable ionogel. The crystalline region can dissipate the energy through the stress-induced disaggregation mechanism in the stretching process and toughen the gel, while the reversible formation and dissociation of the ion-dipole interaction between amorphous polymer chains and ionic liquids can provide elasticity for large strain. These ionogels have high toughness, strong tensile strength, large Young’s modulus, and good stretchability. Furthermore, the ionogels also possess other properties like good fatigue resistance, quick self-recovery, high transparency, recyclability, self-healing ability, high ionic conductivity, and wide electrochemical window. This ionogel exhibits great potential in several iontronic devices, such as triboelectric nanogenerators, ionic thermoelectric materials, and strain sensors. This study develops a new method to guide the preparation of high-performance ionogels by combining reversible strong and weak interactions.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 190
·期 1
·1-11
·
IF 6.408
Duan Nuo,He Chuxian,Lin Xianfeng,Yu Wenyan,Wang Zhouping,Yuan Wenbo,Wu Shijia
Zeolitic imidazolate framework (ZIF-8) base-aptamer “gate-lock” biomaterial probes have been synthesized for monitoring intracellular deoxynivalenol (DON) and cytochrome c (cyt c) levels. The aptamer and organic fluorescent dye were regarded as a recognition element and a sensing element, respectively. In the presence of DON, the aptamers of DON and cyt c were specifically bound with the DON and induced cyt c, leading to the dissociation of aptamers from the porous surface of the probes. The gate was subsequently opened to release methylene blue (MB) and Rhodamine 6G (Rh6G), and their fluorescence (emission of MB at 700 nm and Rh6G at 550 nm) significantly recovered within 6 h. Cell imaging successfully monitored the exposure of DON and the biological process of cyt c discharge triggered by the activation of the DON-induced apoptosis pathway. In addition, the response between DON and cyt c was observed during the apoptosis process, which is of high significance for the comprehensive and systematic development of mycotoxins cytotoxicity. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 11
·3371-3382
·
IF 2.936
Kang Yuexin,Sun Shangde,Wang Ping
Monoricinolein (MRO) is a renewable and biodegradable surfactant derived from castor oil (CO). In this work, a novel ionic liquid (IL)-catalyzed method for selective MRO preparation by the glycerolysis of CO was investigated. Six basic ILs ([Bmim]Im, [Bmim]OH, [Bmim]DCN, [Bmim]OAc, [Emim]OAc, [Emim]Im) were screened and evaluated as homogeneous catalysts. Among the tested ILs, [Bmim]Im showed the best catalysis performance. An evaluation of the effects of reaction variables on the IL-catalyzed glycerolysis was carried out (temperature, reaction time, IL load and substrate ratio). The maximum MRO yield (75.77 ± 1.20%) and triacylglyceride (TAG) conversion (96.67 ± 0.10%) were obtained under the following optimized conditions: CO/glycerol molar ratio 1:6, IL load 10%, 180 °C, 3 h, and no water added. The results showed that the selectivity of MRO was enhanced. The activation energies (Ea) for CO conversion and formation of the MRO were 44.07 kJ/mol and 54.99 kJ/mol, respectively. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2022
·Vol. 15
·期 1
·1-14
·
IF 23.655
Gong Cheng,Zhang Cong,Zhuang Qixin,Li Haiyun,Yang Hua,Chen Jiangzhao,Zang Zhigang
The interfacial defects and energy barrier are main reasons for interfacial nonradiative recombination. In addition, poor perovskite crystallization and incomplete conversion of PbI 2 to perovskite restrict further enhancement of the photovoltaic performance of the devices using sequential deposition. Herein, a buried interface stabilization strategy that relies on the synergy of fluorine (F) and sulfonyl (S=O) functional groups is proposed. A series of potassium salts containing halide and non-halogen anions are employed to modify SnO 2 /perovskite buried interface. Multiple chemical bonds including hydrogen bond, coordination bond and ionic bond are realized, which strengthens interfacial contact and defect passivation effect. The chemical interaction between modification molecules and perovskite along with SnO 2 heightens incessantly as the number of S=O and F augments. The chemical interaction strength between modifiers and perovskite as well as SnO 2 gradually increases with the increase in the number of S=O and F. The defect passivation effect is positively correlated with the chemical interaction strength. The crystallization kinetics is regulated through the compromise between chemical interaction strength and wettability of substrates. Compared with Cl − , all non-halogen anions perform better in crystallization optimization, energy band regulation and defect passivation. The device with potassium bis (fluorosulfonyl) imide achieves a tempting efficiency of 24.17%.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Science China-Materials
·
2022
·Vol. 66
·期 4
·1398-1406
·
IF 8.64
Wei Xiaoqian,Li Zijian,Jang Haeseong,Kim Min Gyu,Qin Qing,Liu Xien
Surface strain tuning in a coupled heterostructure efficiently engineers the catalytic performance of heterogeneous catalysts by altering the electronic structures and boosting electron transport. Generally, Bi-based catalysts are more favorable than ZnO for CO 2 electroreduction to formate, but Bi is much more costly than Zn. Herein, a new Bi 2 O 2 CO 3 /ZnO heterojunction catalyst with porous nanoplate morphology is synthesized through a hexadecyl trimethyl ammonium bromide-templated hydrothermal reaction for a highly efficient catalytic CO 2 reduction reaction (CO 2 RR) to produce formate. The Bi 2 O 2 CO 3 /ZnO catalyst shows a maximum Faradaic efficiency of 92% for formate production at −1.0 V vs. reversible hydrogen electrode (RHE) and a large partial current density of −200 mA mg Bi
−1 at −1.2 V vs. RHE. More importantly, the mass activity of Bi 2 O 2 CO 3 /ZnO normalized by Bi mass is an approximately 3.1-fold enhancement over that of the pristine Bi 2 O 2 CO 3 at −1.2 V vs. RHE. By coupling X-ray photoelectron spectroscopy and adsorption spectroscopy measurements, the charge transfer from the Zn atom to the Bi atom through a heterogeneous interface results in an electron-enriched Bi 2 O 2 CO 3 surface, which facilitates CO 2 capture and activation. Meanwhile, compressive stress produced on the catalyst surface helps optimize the adsorption energy of the reaction intermediate, synergistically enhancing the catalytic selectivity and activity of Bi 2 O 2 CO 3 /ZnO for electrochemical CO 2 reduction to formate.
✓ 已验证
产品关联
DOI
高影响因子
Science China-Technological Sciences
·
2022
·Vol. 66
·期 1
·267-280
·
IF 3.903
Xiao Meng,Yao Yuan,Liu WenGuang
Stretchable ionic thermoelectric (i-TE) materials have attracted growing interest in converting low-grade thermal energy into electricity. However, substantial improvement on i-TE performance of quasi-solid ionogels remains a significant challenge. Here, a nanocomposite ionogel with skin-like stretchability, high i-TE performance, thermostability and durability is prepared by hybridizing ionic liquid (IL) and Laponite nanosheets into waterborne polyurethane (WPU). With multiple H-bond, WPU can accommodate a higher content of IL, thereby improving its ionic conductivity. After cation exchange between IL and Laponite, the negatively charged Laponite sheets and released Na + can enhance the ionic Seebeck coefficient by enlarging thermophoretic mobility difference between the cations and anions in ionogel. Besides, incorporation of Laponite causes the decrease of thermal conductivity. Thus, the WPU-IL-Laponite ionogel exhibits a high ionic thermopower of 44.1 mV K −1 , high ionic conductivity of 14.1 mS cm −1 and low thermal conductivity of 0.43 W m −1 K −1 at a relative humidity of 90%. The corresponding ionic figure of merit of the ionogel is 1.90±0.27. Moreover, the ionogel demonstrates excellent durability during repeated stretching process. The stretchable ionogel can be fabricated into ionic thermoelectric capacitor to convert thermal energy from solar radiation into electricity.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2019
·Vol. 189
·期 4
·1096-1107
·
IF 2.14
Zhang Peng,Wang Junqian,Ding Xuanwei,Lin Jun,Jiang Hao,Zhou Hongjun,Lu Yuan
Cell-free synthetic biology has become a robust technology platform for synthesizing proteins and chemicals in recent years. Cell-free synthetic biology system activates biological machinery without the use of living cells, which opens new opportunities for the addition or synthesis of toxic substances at high concentrations in biological systems. Although it is generally accepted that an in vitro cell-free synthesis system has a high tolerance ability to toxic substances, there is a lack of relevant data to support this view. To explore particular tolerance ability, a range of different surfactants, lipids, materials, biofuels, and chemical drugs were selected for testing their effects in Escherichia coli –based cell-free protein synthesis system. The results showed the limit concentrations of different toxic substances. Moreover, the results demonstrated that the tolerance ability of a cell-free system is much higher than that of a cell system. This study further provides a rationale for the synthesis of toxic biopharmaceuticals, biochemicals, and biofuels by using cell-free systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2019
·Vol. 37
·期 8
·737-743
·
IF 2.804
Hong Yang,Cheng Xun-Liang,Liu Ge-Jun,Hong Dong-Sheng,He Si-Si,Wang Bin-Jie,Sun Xue-Mei,Peng Hui-Sheng
Given that conventional bulky electrochemical energy storage devices are too rigid and heavy to be considered wearable, developing fully integrated power systems is expected to accelerate the successful commercialization of smart electronic textiles. Although great achievements have been made for fiber-shaped energy storage devices, there remain key challenges pertaining to their fabrication efficiency, scalability, and stability. Herein, a general and highly efficient method is developed to continuously fabricate supercapacitor fibers with lengths of kilometers at high production rate up to 118 m/h through a simple one-step wet spinning method. Beneficial from the designed unique two-circle-in-one-circle architecture, the resulting supercapacitor fibers demonstrated high electrochemical stability even after being bended for 1 × 10 5 cycles. As a demonstration, these continuous supercapacitor fibers were further woven into a flexible power scarf for large-scale applications in wearable electronics. This simple and scalable fabrication process combined with the unique structure provides a general and effective paradigm to design other fiber-shaped devices like sensors, batteries, and solar cells.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 17
·11417-11434
·
IF 3.442
Wang Dadao,Li Jian,Xu Zhifeng,Zhu Yeran,Chen Guoxin,Cui Zheng
A novel three-dimensional ball-flower-like g-C 3 N 4 /NiO (GN) photocatalyst was firstly fabricated by a simple two-step calcination method for enhanced degradation capability. Our investigation focuses on the construction of p–n heterojunction and specific ball-flower-like structure to overcome limitations of single-component semiconductors, such as low surface area, poor light response and fast recombination of the photogenerated electrons and holes. Detailed photocatalytic experiments revealed that the novel ball-flower-like GN (50%) exhibited much higher activity for the removal of TC and Cr 6+ than single g-C 3 N 4 , NiO and traditional layered GN. The trapping experiments proved that the superoxide radicals ( \( ^{ \cdot } {\text{O}}_{2}^{ - } \) ), holes (h + ) and electrons (e − )were the main active species in the photodegradation process. Moreover, three different degradation pathways and fourteen intermediate products of TC were also determined by the LC/MS analysis and these intermediates could be further degraded completely into CO 2 , H 2 O, \( {\text{NH}}_{4}^{ + } \) , carboxylic acids and any other inorganic intermediates. These results will benefit the fabrication of other 3D p–n heterojunction photocatalysts and their potential application in treatment of organic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2019
·Vol. 149
·期 3
·882-890
·
IF 2.372
Zhang Lu,Yu Deyou,Wu Minghua,Lin Junxiong
Abstract In order to improve the photocatalytic degradation performance of Ag 3 PO 4 and reduce the cost of photocatalyst made of Ag 3 PO 4 , a kind of Ag 3 PO 4 /TiO 2 composite was successfully fabricated via a simply precipitation method for the Ag 3 PO 4 nanoparticles being loaded on the surface of commercial titanium dioxide (P25) to form a heterostructure. The Ag 3 PO 4 /TiO 2 composite were characterized by FT-IR, XRD, XPS, FE-SEM, HR-TEM, DRS and PL and applied for the degradation of formaldehyde solution under solar radiation. The results showed that the degradation rat of Ag 3 PO 4 /TiO 2 composite (0.01796 min −1 ) was much higher than that of pure Ag 3 PO 4 (0.00775 min −1 ), indicating that the Ag 3 PO 4 /TiO 2 composite possessed better photocatalytic degradation activity for the formaldehyde solution than pure Ag 3 PO 4 . The composite significantly decreased the dosage of silver for photocatalyst under solar radiation, thereby reduced the cost of the photocatalyst made from silver. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 8
·6410-6424
·
IF 3.442
Kang Shuai,Qiao Shiya,Hu Zuming,Yu Junrong,Wang Yan,Zhu Jing
The high-performance electromagnetic wave (EMW) absorption materials have great potential in both civil and military fields. A novel approach to prepare the reduced graphene oxide covalently grafted polyaniline (rGO-g-PANI) nanocomposites with the strong absorption intensity and broad bandwidth was employed in this paper. Specifically, the aniline monomers were bonded with the graphene oxide (GO) nanosheets via the nucleophilic ring-opening reaction of epoxy groups of GO. Coupling with the role of the reducer, rGO modified with aniline (rGO-An) was prepared. Subsequently, the rGO-g-PANI nanocomposites were synthesized by the interfacial polymerization, in which the rGO-An nanosheets served as the reactivity point for the interfacial polymerization of aniline, and PANI nanorods grew vertically on the rGO nanosheets. The calculated results of electromagnetic parameters suggest that the minimum reflection loss of the rGO-g-PANI nanocomposites can reach up to − 60.3 dB at the frequency of 11.1 GHz with the thickness of 2.86 mm, and the effective absorption bandwidth less than − 10 dB (90% microwave absorption) is as wide as 4.7 GHz (from 9.3 to 14 GHz) when the content of rGO-g-PANI in the paraffin matrix is 30 wt%. Compared with the rGO/PANI nanocomposites prepared via non-covalent absorption, the microwave absorption performance of the rGO-g-PANI nanocomposites has been greatly enhanced. The results in turn demonstrate that the covalent bonds between rGO nanosheets and PANI nanorods can facilitate the formation of the highly conductive networks, further promoting the EMW absorption.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）