NEW JOURNAL OF CHEMISTRY
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2023
·Vol. 47
·期 30
·14217-14224
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IF 3.3
Min Wang,Zhiwei Huang,Zhongmin Feng,Zhuqing Wang
With the rapid economic development, electronic waste is increasing year by year, but its recovery rate is low and there are few materials for selective and efficient recovery of gold from low concentration gold-containing solutions. Therefore, we designed and prepared a polymer nanomaterial poly(m-phenylenediamine) (PmPD) containing a large number of reducing groups. The material is simple to prepare and can selectively recover low concentrations of gold from acidic solutions (pH = 3.0) within 60 min. In addition, the material can be used to recover gold from river water, lake water and tap water. It has good selective recovery for both low (10 mg g−1) and high (50 mg g−1) concentration gold solutions in the presence of different metal ions. PmPD has some redox ability to recover 1490 mg g−1 of Au(III). In addition, PmPD has a good economic effect because it can be recycled many times.
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SENSORS AND ACTUATORS B-CHEMICAL
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2023
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IF 8.4
Yunpeng Wang,Yue Niu,Ruiting Hao,Jing Zhou,Meng Guo,Ying Liu,Wenbo Liu,Yanwei Chang,Hao Li,Yao Wang,Guofu Zhou
Structure nanocrystallization dramatically enhances the specific surface area and is one of the most popular methods for preparing high-performance gas sensing materials. However, most of the preparation methods are suffering high-cost and long time-consuming. This work synthesized Cu 2 ZnSnS 4 (CZTS), a cost-effective and stable direct-bandgap semiconductor with cauliflower-like morphology by facile solution drop coating and low-temperature annealing. The morphology and gas sensing performance of CZTS films could be modulated by controlling the annealing time. The gas sensors showed a significant response toward ppb-level NO 2 (1.287 toward 50 ppb) with a short response, recovery time, and high selectivity at room temperature (25 °C). It is worth mentioning that the limit of detection is 50 ppb, which is the first report on the ppb-level detection ability of CZTS-based NO 2 gas sensors. The enhanced sensitivity of the cauliflower-like CZTS nanocrystal-based gas sensor can be ascribed to the small grain size, large specific surface area for effective gas diffusion, and excellent conductivity of the spherical packed structure.
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CHEMICAL ENGINEERING JOURNAL
·
2023
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IF 15.1
Qingqing Zhou,Yong Liu,Lin Wang,Kun Wang,Haodong Chen,Hailing Zheng,Yang Zhou,Zhiwen Hu,Zhiqin Peng,Junmin Wan,Bing Wang
Developing an effective analytical method for microtrace detection of ancient silk is highly desirable and vitally crucial for exploring the origin and spread of silk. Herein, a taxonomically specific anti-fibroin monoclonal antibody was prepared and an elaborate visible/near-infrared (vis/NIR) photoelectrochemical (PEC) immunosensor was proposed. The sensor employed Ag 2 S nanoparticles (NPs) grown in situ on ZnO nanowire array-MXene nanocomposites (ZnO-MX) via a sonochemical method as a photosensitive material. The experimental results illustrated that the ZnO-MX/Ag 2 S-based sensor presented 6.8 times larger PEC responses than a ZnO-MX-based sensor under visible light illumination, and the PEC signal of the ZnO-MX/Ag 2 S nanocomposites was 30 times as high as that of ZnO-MX under 808 nm NIR light, indicating enhanced photoelectric activity and a matched energy band structure of ZnO with MXene and Ag 2 S. This PEC immunosensor exhibited excellent potential for the ultrasensitive detection of Bombyx mori silk traces due to its wide linear range of 0.005–50 ng mL −1 and low detection limit of 1.51 pg mL −1 . Additionally, the immunosensor showed outstanding specificity, stability, and repeatability, particularly for the qualitative detection of archeological artifacts. Given its aforementioned benefits, ZnO-MX/Ag 2 S nanocomposites are potentially attractive photoactive materials for use in vis/NIR PEC immunosensors. Moreover, this demonstrated method offers a feasible method to investigate the history and distribution of ancient silk.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Xueqing Li,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jianmei Lu
The production of hydrogen peroxide (H 2 O 2 ) from oxygen and water is an attractive route for converting solar energy into chemical energy. In order to achieve high solar-to-H 2 O 2 conversion efficiency, floral inorganic/organic (CdS/TpBpy) composite with strong oxygen absorption and S-scheme heterojunction was synthesized by simple solvothermal-hydrothermal methods. The unique flower-like structure increased the active sites and oxygen absorption. The existence of S-scheme heterojuntion facilitated the charge transfer across the built-in electric field. Without sacrificial reagents or stabilizers, the optimal CdS/TpBpy had a higher H 2 O 2 production (3600 µmol g -1 h −1 ), which was 2.4 and 25.6 times than those of TpBpy and CdS , respectively. Meanwhile, CdS/TpBpy inhibited the H 2 O 2 decomposition, thus increasing the overall output. Furthermore, a series of experiments and calculations were carried out to verify the photocatalytic mechanism. This work demonstrates a modification method to improve the photocatalytic activity of hybrid composites, and shows potential applications in energy conversion.
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Journal of Energy Storage
·
2023
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IF 9.4
Ramzi Nasser,Hao Zhou,Amira Ben Gouider Trabelsi,Fatemah Homoud AlKallas,Habib Elhouichet,Ji-Ming Song
Designing hybrid composites electrodes with hierarchical nano-structural features and superb electrochemical performances sites is vital factor for engineering advanced supercapacitors . Herein, a novel nanocomposite from CoWO 4 nanodots anchored on olive derived activated carbon doped with N and S (OACNS) is successfully prepared via an in-situ hydrothermal process. The well dispersion of the CoWO 4 nanodots (pseudo-capacitor type) with ca. 7 nm in diameter on the OACNS nanosheets prevents their agglomerations to build hierarchical porous structure with high surface area (162.8 cm 2 ·g −1 ) and various pores sizes distribution. Noteworthy, through the synergistic effect , the composite shows superb capacitance value of 152 mAh·g −1 (0.5 A·g −1 ) and splendid life cycle of 93.5 % (via 12,000 cycles). Interestingly, an asymmetric CoWO 4 @OACNS//OACNS hybrid supercapacitor provides excellent specific energy (53.6 Wh·kg −1 ) at maximum specific power of 650 W·kg −1 . Such fascinating electrochemical performance indicates that the proposed CoWO 4 @OACNS hybrid composite can be exploited as cathode for next generation of energy storage devices.
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Materials Today Physics
·
2023
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IF 11.5
Lin Long,Xiaosi Qi,Lei Wang,Shaohong Cai,Mingsen Deng
Magnetic-dielectric nanocomposites with excellent synergetic effect were deemed as the ideal candidates for high-performance microwave absorbers (MAs). Herein, we adopted a simple hydrothermal route and hydrogenous reduction to synthesize magnetic-dielectric CoFe@MoO 2 /MoS 2 flower-like multicomponent nanocomposites (MCNCs). By controlling the different reduction temperature and time, the content of component (i.e., CoFe, MoO 2 and MoS 2 ) can be easily tuned, which is conducive to adjust electromagnetic parameter and optimize magnetic loss. Results demonstrated that the CoFe@MoO 2 /MoS 2 flower-like MCNCs could be easily regulated by simply changing the content of CoFe in favor of improved magnetic loss and optimized impedance matching. So, the prepared magnetic-dielectric CoFe@MoO 2 /MoS 2 flower-like MCNCs presented the minimum reflection loss of −55.91 dB and the widest effective bandwidth of 7.24 GHz. The strategies for adjusting rich interfaces and optimized magnetic loss are very instructive for the development of high-performance MAs and devices.
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DIAMOND AND RELATED MATERIALS
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2023
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IF 4.1
Yanling Jin,Aiyue Sun,Jiahui Geng,Fang Ren,Zhengyan Chen,Lu Pei,Zhenfeng Sun,Yanli Du,Peng-Gang Ren
Nickel cobalt sulfides have exhibited great promise as supercapacitor electrode materials owing to the abundant redox states and considerable theoretical capacities. However, they still suffer from sluggish reaction kinetics, resulting in undesirable capacitance, cyclic and rate performances. Herein, electrochemical exfoliated graphene with high dispensability was utilized as the matrix and uniform nickel‑cobalt sulfide nanorods grown on graphene (Ni-Co-S/G) was achieved by a facile two-step strategy for enhanced capacitive performances. This well-constructed Ni-Co-S/G can provide plentiful active sites for electrochemical reaction , offer more efficient and rapid electron/ion transfer pathways during the charge/discharge process, and the tight contact of nickel‑cobalt sulfide nanorods and graphene can improve the stability. Consequently, the obtained Ni-Co-S/G electrode exhibits a high specific capacity of 1579.68 F g −1 at 1 A g −1 , splendid rate capability (1240 F g −1 at 20 A g −1 ) and excellent cycling stability with capacity retention of 91.5 % after 5000 cycles at 5 A g −1 . Additionally, the assembled asymmetric supercapacitor (ASC) device Ni-Co-S/G//AC with Ni-Co-S/G and commercial active carbon as positive and negative electrode displays an energy density of 75.3 W h kg −1 at the power density of 1125 W kg −1 , still retaining 50.5 Wh kg −1 even at 16.9 kW kg −1 . This work provides a potential strategy to design high-performance nickel‑cobalt sulfides electrode for advanced supercapacitors .
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JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Enya Wu,Yang Yu,Jiayue Hu,Gang Ren,Mingshan Zhu
The conjugation of membrane filtration (MF) with advanced oxidation process (AOPs) is being considered as an alternative advanced treatment process for the potable reuse of wastewater. Beyond conventional MF/AOPs conjugation, a new downstream MF process with piezoelectric-channels induced piezo-activated peroxymonosulfate (PMS) is herein constructed to deal with antiepileptic carbamazepine (CBZ) pollutants through polyvinylidene fluoride (PVDF) membrane (PVDF-M10). Through a MF process, ca. 93.8% CBZ pollutants can be removed under an ultrasonic-assisted piezo-activation PMS, whereas only 18.3% and 60.2% CBZ can be removed by using pure PVDF membrane under the same condition and PVDF-M10 membrane without ultrasonic-assisted piezo-activation. Even after 9-cycles, CBZ removal efficiency was maintained at 56.4% under this MF process. These superior performances are attributed to the piezoelectric exfoliated-MoS 2 nanosheets (E-MoS 2 ) embedded PVDF nanofibers in PVDF-M10 membrane, which lead to rich piezoelectric-channels in the membrane. These piezoelectric-channels not only produced more charges to activate PMS to boost the yield of reactive oxide species (ROS) but also provided an ideal platform for the rapid reaction between CBZ and ROS during MF process. This investigation develops a new MF technique to conjugate piezo-activation of PMS-AOPs for the efficient removal of emerging pollutants for the potable reuse of wastewater.
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CARBON
·
2023
·
IF 10.9
Yongjun Zhou,Yuanya Zhang,Jing Wang,Yu He,Junya Yuan,Xuehu Men
Epoxy resin (EP) composites are attracting intensive interest for aviation aircraft applications due to superior machinability and high corrosion resistance . However, the poor tribological performance of EP matrix greatly limits its wide application because of highly brittle and weak thermal properties. Herein, we constructed a vine-like MXene@MoS 2 /Carbon nanofiber aerogel (MMoCA) via directed freezing method and cellulose carbonization treatment. The obtained MMoCA exhibited long-range-aligned 3D porous lamellar structure and the MXene@MoS 2 attached to carbon nanofiber surface presented good dispersion inside the aerogel. Such a novel aerogel bestowed the EP composites with outstanding thermal properties through constructing continuous oriented thermal diffusion channels inside the EP matrix. Meanwhile MMoCA reinforced EP composites (MMoCA-EP) showed great potential in tribological application, resulting from the rapid friction heat dissipation and high-quality transfer films during the friction process . This study has a significant guidance to develop high performance polymer composites in the frontier field of tribology .
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Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Yong Xiang,Wencai Bai,Jianggen Han,Zhouxuan Zang,Xiangmeng Chen,Li Xu,Guoji Liu
The industrial application potential of current adsorbents for Au(III) recovery is limited due to their high costs, poor adsorption capacity, and complicated preparation processes. This study introduces a novel approach to address these challenges by synthesizing metal sulfides through a one-step hydrothermal method. The synthesized metal sulfides exhibit exceptional adsorption capacities, exceeding 1500 mg/g. Particularly, petal-shaped CuS demonstrates outstanding performance in extracting gold from complex solutions, including fresh water and simulated leaching liquid of electronic circuit boards. With an impressive adsorption capacity of 2536 mg/g in a 700 mg/L Au (III) spiked solution, CuS achieves a remarkable 90.6% removal efficiency. The adsorption process of CuS on gold can be well described by a pseudo-second-order kinetic model and the Langmuir model. Furthermore, CuS is successfully loaded onto sodium alginate (SA) aerogel for large-scale applications. The layered structure of SA overcomes the challenge of solution retrieval, making it a promising material with outstanding removal performance for industrial use. In cases where a high specific surface area does not confer advantages, CuS demonstrates superior performance compared to numerous gold ion adsorbents. This observation motivates us to emphasize the content of active functional groups during the design of gold ion adsorbents. This research significantly advances the field of Au(III) recovery by providing cost-effective and efficient adsorbents with simplified synthesis processes and strong adsorption capabilities.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Hankui Sang,Congming Tang,Kai Ma,Xinli Li
The scarcity of fresh water resources necessitates us to develop an efficient technique for sustainable production of clean water from seawater and wastewater. Here, we constructed the 1 T-MoS 2 /PDA (polyaniline) as a photothermal material for purification of seawater and wastewater to produce clean water through interfacial evaporation by virtue of sunlight. 1 T-MoS 2 has a higher evaporation capacity of water than 2 H-MoS 2 , which was selected to prepare 1 T-MoS 2 /PDA composite for photothermal conversion. As expected, 1 T-MoS 2 /PDA composite offers a higher evaporation rate of water than both 1 T-MoS 2 and PDA , which owes to an excellent light absorbance, low light reflectance and good wettability . Under irradiation of 1 sun, the evaporation rate of water over the 1 T-MoS 2 /PDA composite in pure water reached 1.51 kg m −2 h −1 , and the photothermal conversion efficiency reached 92%. Encouragingly, 1 T-MoS 2 /PDA composite can be well used to treat real seawater and various wastewater such as organic dye solution and heavy metal ion solution, in which the evaporation rate of water is close to pure water, and the quality of water is better than the standard of drinking water established by the World Health Organization (WHO). Besides, 1 T-MoS 2 /PDA composite still maintain an excellent evaporation performance after treatment of acidic solution and alkaline solution, indicating an excellent durability. This work provides a feasible solution for producing clean water by solar-driven interfacial evaporation from seawater and wastewater.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Yuelong Xu,Jingyue Wang,Shasha Wang,Zuozhao Zhai,Bin Ren,Zhi Tian,Lihui Zhang,Zhenfa Liu
Multifunctional electrocatalysts are desirable for overall water splitting and zinc-air batteries. In this work, N, S co-doped carbon nanotubes (CNT-NS) with a plentiful of defects were obtained through a novel molecular-level codoped and lattice defect construction method. Thiamine hydrochloride and thiocarbamide were adopted as new precursors in situ doping N and S into multi-walled CNTs surfaces, and lattice defects were constructed by in situ chemical etching using ammonium chloride and ammonium bicarbonate . These surface defects and N,S biatom co-doping synergistic effects can accumulate the CNT-NS to exhibit the superior behavior for electrocatalysis of water splitting and zinc-air batteries. The overpotential for overall water splitting was 1.61 V and the specific capacity for zinc-air batteries was 781 mA h g −1 , which was superior to previous works. According to the Operando Raman spectroscopy measurements, the S atoms can serve as the intrinsic catalytic sites for HER and OER , and the defective CNT structures could enhance the catalytic kinetics by the electron-transfer process. Further, density functional theory (DFT) results also indicated the contribution of binary atoms co-doping for low ΔG H∗ values. Therefore, this work provides the valuable reference for rational design/construction for metal-free catalysts of overall water splitting.
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