ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Chunhuan Zhang,Jiale Xu,Mu Liu,Haoyu Wang,Jiachen Ma,Riming Hu,Fahao Ma,Zhaoke Zheng,Xuchuan Jiang
Nickel-based materials exhibit great potential for electrocatalytic upgrading of poly(ethylene terephthalate) (PET)-derived ethylene glycol (EG) and biomass-derived glycerol (GLY). However, the high energy barrier for generating active species (Ni3+OOH) and their limited ability to activate EG and GLY significantly impede the efficient conversion of EG and GLY. Herein, CuO@Ni(OH)2–x core–shell nanowires with abundant oxygen vacancies and p–n junction interfaces were successfully designed, which exhibited high activity and selectivity for EG/GLY-to-formic acid at industrial-grade current densities. Particularly, for EG electrooxidation, CuO@Ni(OH)2–x offered 300 mA cm–2 at an ultralow potential of 1.58 V vs RHE with ∼99% Faradaic efficiency for HCOOH production. Experimental and theoretical analysis revealed that (1) the oxygen vacancies and p–n junction synergistically mediate the atomic coordination and electronic structure of Ni2+–OH, which facilitates OH– adsorption and decreases the energy barrier of O–H bond cleavage, and hence accelerates the formation of Ni3+OOH; (2) the high exposure of Ni3+ enabled by oxygen vacancies enhances the adsorption of EG/GLY and the cleavage of the C–C bond, which boosts the kinetics of EG/GLY-to-formic acid. As a proof of concept, a solar-driven reactor equipped with a “one-click” operating system was designed for the upcycling of real-world PET bottles, achieving a Faradaic efficiency of 86.7% for HCOOH. This work underlines the synergistic regulation of defects and p–n junctions in nickel-based electrocatalysts for efficient PET and biomass-derived alcohol electrooxidation.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Lin Wei,Yang Zhibin,Tao Jin-Gang-Lu,Zhao Qianqian,Liu Fuyu,Li Wanshan,Feng Renfei,Zhang Yu,Fu Xian-Zhu,Luo Jing-Li,Zhao Bin
Developing efficient and durable electrocatalysts for
alkaline
seawater hydrogen evolution remains challenging because of sluggish
water dissociation kinetics. Herein, we report a defect-rich d-p orbital-hybridized
Os/o-CNTs electrocatalyst ( dph -Os def /o-CNTs)
prepared by rapid room-temperature NaBH 4 reduction. The
partially oxidized CNT support anchors defective Os nanoclusters and
induces C–Os/C–O–Os electronic coupling, generating
electron-deficient Os sites with modulated 5d electronic structures.
In alkaline simulated seawater (1 M NaOH + 3.5 wt % NaCl), dph -Os def /o-CNTs requires only 91 mV to reach
100 mA cm –2 and exhibits a Tafel slope of 19 mV
dec –1 , with stable operation over 350 h and 10,000
CV cycles. In situ Raman spectroscopy, AIMD simulations, and DFT calculations
reveal that Os vacancies reorganize interfacial water into an ordered
H-bond network, promote O-down water adsorption, and reduce the water
dissociation barrier from 1.12 to 0.56 eV. Moreover, an Al | OH – | H 2 primary cell using dph -Os def /o-CNTs as the cathode delivers 1.41 V and 10.92
mW cm –2 , enabling simultaneous hydrogen generation
and electricity output.
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Qinhan Wu,Pengkun Zhang,Dong-Hau Kuo,Binghong Wu,Adugna Boke Abdeta,Zhengjie Su,Longyan Chen,Osman Ahmed Zelekew,Jinguo Lin,Xiaoyun Chen
Monoclinic lindgrenite (Cu 3 (MoO 4 ) 2 (OH) 2 )-like CuMoOS oxysulfide catalyst with high catalytic activity in the dark was synthesized by a facile method. Hydrazine reduced cations to increase Cu + and Mo 4+ proportions, sulfur doping was used to diminish the problem of poor stability caused by the excessive deviations of the catalyst from electric neutrality due to the high Cu + and Mo 4+ concentrations. The ratios of Cu + /Cu 2+ and Mo 4+ /Mo 6+ ions affected the catalytic activity of CuMoOS catalysts. The CuMoOS with a Cu + /(Cu + +Cu 2+ ) ratio of 0.708 showed abundant oxygen vacancies and the best catalytic reduction effect. Through controlling the Cu + content of the catalyst, its defective structure, and electron transfer resistance, the reduction reaction with NaBH 4 can be effectively adjusted. CuMoOS-3 catalyst shows a complete catalytic reduction of 4-NP (50 ppm) within 4 min 50 ppm MB, RhB and MO organic dyes were completely reduced within 4 min, 6 min, and 8 min, respectively. At the same time, Cr 6+ , as a model heavy metal ion , was completely reduced in 12 min, and its pseudo-first-order reaction kinetic constant reached 0.1709 min −1 . Good stability was kept after six cycling experiments. Therefore, the high-efficiency CuMoOS catalyst synthesized by green procedures displays the potential for industrial application.
✓ 已验证
产品关联
DOI
高影响因子
POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2023
·
IF 7
Jialin Duan,Zhiyan Xu,Yunmin Shi,Lanxiang Jiang,Yali Fan,Yulin Li,Ming Ni,Jianjun Hou
The yellowing and quality deterioration are important factors to shorten the storage period of peeled water chestnuts (PWCs). Integration of 4-OH-7-C 3 HO-coumarin and controlled atmosphere (CA) storage (Ne, O 2 ) to extend the storage period of PWCs has not been studied. The objective of the investigation was to reveal the mechanics with that integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ) extended the storage period of PWCs. PWCs were treated with 4-OH-7-C 3 HO-coumarin (1.2 %), CA storage (81.2 % Ne, 18.8% O 2 ), and integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ). The yellowing degree, weight loss, yellowing substance contents, enzymatic activities, total soluble solids content, titratable acidity content, ascorbic acid content, and microbe of PWCs were detected. 4-OH-7-C 3 HO-coumarin (1.2 %), CA storage (81.2 % Ne, 18.8 % O 2 ), and integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ) extended the storage period by 3, 9 and 12 d. Integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8% O 2 ) was the best. On day 12, integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ) reduced the yellowing degree from 99.5% to 0, the peroxidase activity from 35,603.37 to 28,504.61 U s −1 kg, the eriodictyol content from 3.09 × 10 −4 % to 0, the weight loss from 5.24 % to 0. Integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ) increased the total soluble solids content from 9.37 % to 13.49%, the titratable acidity content from 5.67 × 10 −3 % to 8.62 × 10 −3 % , and the titratable acidity content from 8 × 10 −5 % to 8.55 × 10 −5 %. Integration of 4-OH-7-C 3 HO-coumarin (1.2 %) and CA storage (81.2 % Ne, 18.8 % O 2 ) can be employed to extend the storage period of PWCs. This study provided a theoretical basis for the practical application of integration of 4-OH-7-C 3 HO-coumarin and CA storage (Ne, O 2 ) to extend the storage period of PWCs.
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 24
·8122-8135
·
IF 4.174
Jialin Yu,Qi Gao,Lijuan Zhang,Yunshan Zhou,Yuxu Zhong,Jianbo Yin,Yuanyuan Zhou,Fangsheng Tao,Yong'an Wang
ε-[Al13O4(OH)24(H2O)12]7+, which shares similarity with the phosphotriesterase active site ZnII–OH–ZnII, was specially chosen to interact with the cluster α-PMo10V2O405− to form a new three-dimensional intercluster, which crystallized in the monoclinic space group P21/m with Z = 2, for the decontamination of chemical warfare agents. The experimental results showed that 50 mg of the compound decontaminated 96.4% (within 120 min) and 99.5% (within 40 min) of sulfur mustard (HD) (4 μL) and soman (GD) (4 μL), respectively, in ambient conditions. The decontamination processes followed first-order reaction kinetics with a rate constant and half-life of 0.01234 min−1 and 56.15 min for HD and 0.1198 min−1 and 5.78 min for GD, respectively. It was concluded that the α-PMo10V2O405− moiety was responsible for the catalytic oxidation of HD into non-toxic sulfoxide, while the ε-[Al13O4(OH)24(H2O)12]7+ moiety was responsible for the catalytic hydrolysis of HD and GD into nontoxic hydrolysates. Besides, the compound showed notable efficacy for the decontamination of HD on guinea pig skin and of GD on Kunming mouse skin, indicating high potential for use in human skin protection and treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Yan Yang,Chengxiao Sun,Hua Deng,Qiang Fu
Dielectric capacitors with high dielectric constant and energy density are of great importance for electronic devices. Barium titanate(BaTiO 3 ) have been widely explored for polymer-based dielectric composites owning to its ultrahigh dielectric constant and commercial availability. However, due to the large difference of dielectric constant between BaTiO 3 and polymer matrix , the interface becomes fragile under electric field, which is not conducive for the improvement in breakdown strength and energy storage density . Herein, a flower like barium titanate/nickel hydroxide(BTO/Ni(OH) 2 ) core-shell structured filler has been fabricated to provide a novel approach to modify the interface between BTO and P(VDF-HFP) matrix for dielectric polymer composites . Ni(OH) 2 nanoflakes have grown in-situ on the surface of hydroxylated BaTiO 3 particles to form the flower like core-shell assemblies via hydrothermal reaction . Then, these synthetic BTO/Ni(OH) 2 particles with specific flower-like core-shell structure can be uniformly dispersed in P(VDF-HFP) without any additional surface modification due to their surface –OH groups. Meanwhile, Ni(OH) 2 shell triggered beta phase of P(VDF-HFP) near core-shell filler based on the interfacial interaction between Ni(OH) 2 and P(VDF-HFP). Thus, the intensity of the local electric field can be gradually reduced due to the formation of a dielectric constant gradient. Besides, these Ni(OH) 2 nanoflakes shell are able to cut down the local electric field and prevent the growth of electrical trees on the surface of BaTiO 3 during breakdown process. When the composite filler content is 10 wt%, the dielectric constant and breakdown strength increases to 14.8 and 330 kV/mm from 11 to 260 kV/mm, respectively. And the calculated energy density is 7.13 J/cm 3 , which is 1.5 times that of 10 wt% BTO/P(VDF-HFP) composite film . This study provides a novel shell material Ni(OH) 2 for the preparation of BTO core-shell structure filler, which has good compatibility with polymer substrates .
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 44
·25677-25689
·
IF 3.049
Renjie Gu,Xuelei Li,Kunpeng Cheng,Lixiong Wen
A micro-impinging stream reactor (MISR) consisting of a commercial T-junction and steel capillaries, which is of intensified micromixing efficiency as compared with traditional stirred reactors (STR), was applied for the preparation of Co and Al co-doped Ni(OH)2 nanocomposites and their modification with reduced graphene oxide (RGO). The co-precipitation preparation process was conducted under precisely controlled proportions and concentrations of reactants in the MISR. Therefore, element analysis showed a higher uniform distribution of metal ions within the nanocomposites obtained through the MISR. The structural characterization and electrochemical measurements also showed that the MISR-prepared metal-doped nanocomposites were of more uniform dispersion and superior electrochemical performance than those prepared with STR. In addition, by modifying with RGO in the MISR, the electrochemical performance of Co and Al co-doped Ni(OH)2 nanocomposites could be further improved. The Co and Al co-doped Ni(OH)2/RGO prepared under optimal conditions achieved an ultrahigh specific capacitance of 2389.5 F g−1 at the current density of 1 A g−1 and displayed an excellent cycling stability with 83.7% retention of the initial capacitance after 1000 charge/discharge cycles in 6 M KOH aqueous solution.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2018
·Vol. 125
·期 2
·789-806
·
IF 1.515
Yan Huaipu,Zhang Hong-Yu,Wang Liping,Zhang Yuecheng,Zhao Jiquan
The immobilization of ruthenium species on polyethylenimine (PEI) modified magnetic nanoparticles coated with silica afford a multifunctional catalyst (Fe 3 O 4 @SiO 2 @PEI@Ru(OH) x ) for the aerobic oxidation/Knoevenagel condensation of alcohols and active methylene compounds. A wide scope of alcohols and malononitrile could be converted to their corresponding condensation products in excellent yields under mild conditions. This catalyst has advantages of leaching-free of ruthenium species and ease of recovery by an external magnet. The activity deactivation of the catalyst was investigated and was ascribed to the transformation of surface Ru 3+ to Ru 4+ in the process of aerobic oxidation of alcohols.
✓ 已验证
产品关联
DOI
高影响因子
Energy & Environmental Science
·
2018
·Vol. 12
·期 1
·194-205
·
IF 30.067
Jin-Qi Xie,Ya-Qiang Ji,Jia-Hui Kang,Jia-Li Sheng,Da-Sha Mao,Xian-Zhu Fu,Rong Sun,Ching-Ping Wong
Although integrated energy storage devices, such as in-plane micro-supercapacitors (MSCs), are attractive for powering portable microelectronic devices, it is still challenging to develop patterning techniques with high practicability and to rationally design and fabricate electrochemically active materials using feasible procedures. Here, we propose a facile solution-immersion method of fabricating interdigitated copper electrodes with an in situ converted array of Cu(OH)2@FeOOH nanotubes (NTs). A copper current collector can be patterned together with widely employed copper circuits by a facile copper-patterning approach based on cost-effective electroless catalytic deposition of copper with patterned Ag catalysts, which is greatly conducive to the integration of in-plane energy storage devices into microelectronic systems. Furthermore, the rationally designed array of Cu(OH)2@FeOOH NTs, which was converted in situ from the patterned copper electrodes, was demonstrated to be an excellent electrochemically active material with advantages that included a porous structure with a large specific surface area, excellent wettability by the electrolyte, short ion diffusion lengths and one-dimensional electron transport pathway. The resulting MSC devices that were fabricated with the interdigitated Cu(OH)2@FeOOH/Cu electrodes exhibited a high specific capacitance (58.0 mF cm−2 at 0.1 mA cm−2), a high energy density (18.07 μW h cm−2), excellent cycling stability and desirable flexibility.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2018
·
IF 4.484
Xiaona Wang,Juan Sun,Jingxin Zhao,Zhenyu Zhou,Qichong Zhang,Ching-ping Wong,Yagang Yao
Fiber-shaped supercapacitors (FSC), among the most promising next-generation flexible energy storage devices, attract tremendous attention due to their high power density and rapid charging and discharging. However, their practical application is hindered by the low energy density that results from inferior specific capacitance and a limited voltage window. Herein, we design a flexible fiber-shaped asymmetric supercapacitor (FASC) with high energy density using vanadium nitride (VN) nanowires (NWs) on carbon nanotube fiber (CNTF) as negative electrode and ultrathin Ni(OH)2 nanosheet wrapped nickel cobalt oxide (NiCo2O4) to form a hierarchical nanowire array (HNWA) structure on CNTF as positive electrode. As-assembled FASC device has a maximum operational voltage of 1.6 V, with a highest areal capacitance of 291.9 mF/cm2 (106.1 F/cm3) and an energy density of 103.8 μWh/cm2 (37.7 mW/cm3). The FASC device possesses excellent reliability and achieves a retaining capacitance of more than 90% after 3000 bending cycles, which boosts practical applications for next-generation flexible energy storage devices.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2013
·
IF 2.144
Beibei Wang,Huan Shang,Cuiping Nie,Qi Wang,Meihu Ma,Zhaoxia Cai
A novel two-step controlled basic water phase method has been developed for synthesizing size-tunable and water-soluble CdTe/Cd(OH) 2 core/shell quantum dots with high quantum yield and good stability. The size of the prepared CdTe/Cd(OH) 2 core/shell quantum dots can be easily manipulated by varying the concentrations of NaOH solution step by step. The maximal emission wavelengths of the series CdTe/Cd(OH) 2 core/shell QDs were from 513 nm to 610 nm (emission colors tuned from green to red). The CdTe/Cd(OH) 2 core/shell quantum dots not only possess high quantum yield (up to 83%) but also exhibit excellent photostability (being stable after being stored for more than 2 months). The CdTe/Cd(OH) 2 core/shell quantum dots were characterized by transmission electron microscopy , high-resolution transmission electron microscopy, X-ray powder diffraction spectrometry , ultraviolet–visible spectrometry and fluorescence spectrometry. The water-soluble nature of the CdTe/Cd(OH) 2 core/shell quantum dots offers great potentiality for their chemical and biological applications. This method is easily controlled, low-cost and reproducible. So it is possible to extend this approach to the preparation of other size-tunable inorganic metal hydroxide capped core/shell quantum dots.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Yao Jin,Xiangwei Yuan,Lian Ou,Jiaying Wu,Jiangtao Hu,Kang Xue,Xiaoli Xiong
Formaldehyde is known to harm the respiratory, nervous, and digestive systems of people. In this paper, a novel dandelion-like electrocatalyst with core–shell heterostructure arrays were fast self-assembled prepared in situ using copper foam (CF) as support substrate and 2,3,6,7,10,11 hexahydroxy-triphenyl (HHTP) as ligand (Cu(OH) 2 @Cu 3 (HHTP) 2 /CF) by a simple two-step hydrothermal reaction. The 1D Cu(OH) 2 nanorods “core” and the 2D π-conjugated conducting metal–organic frameworks (Cu 3 (HHTP) 2 c MOF) “shell” with remote delocalized electrons give the dandelion-like heterogeneous catalysts excellent electrochemical activity such as a large specific surface area, high conductivity and a fast electron transfer rate. The Cu(OH) 2 @Cu 3 (HHTP) 2 /CF exhibited excellent electrocatalytic performance for formaldehyde under alkaline conditions with a linear range of 0.2 μmol/L – 125 μmol/L and 125 μmol/L – 8 mmol/L, a detection limit as low as 15.9 nmol/L (S/N = 3), as well as good accuracy, consistency, and durability, and it effectively identified FA in food.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）