MICROCHEMICAL JOURNAL
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2019
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IF 3.206
Guohan Sun,Shiqiao Wang,Jianfeng Zhou,Jianbin Pan,Yanli Tong,Qinghua Mei,Haiyun Zhai
In the present study, a novel and facile poly-m-amino-benzenesulfonic acid (p-m-ABSA) film on glassy carbon electrode (GCE) was developed using pulse potentiostatic method (PPM), which is employed with the oxidative polymerization of m-ABSA at anode potential. Meanwhile, a simple and sensitive sensor was fabricated to detect normetanephrine (NMN), which is one of the significant diagnostic markers for diseases. Compared with bare GCE, the p-m-ABSA film prepared on GCE surface has the advantage of increasing electrode surface area and active sites distinctly, thus obviously improving the electrocatalytic activity. The results demonstrated that the developed electrochemical sensor exhibited high sensitivity, stability, selectivity and excellent electrocatalytic activity towards NMN. The surface morphology of p-m-ABSA/GCE was characterized by scanning electron microscopy (SEM), indicating that the electrode surface had a layered structure. The preparation conditions and analysis methods of sensors were studied in detail. Under optimum conditions, peak current and concentrations of NMN were linearly related well from 0.5 to 30.0 µM with a limit of detection (S/N = =3) of 0.17 µM. Moreover, this modified sensor has also been successfully used for the detection of NMN in human serum samples.
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高影响因子
POLYMER TESTING
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2022
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IF 4.931
Jiang Tu,Suhui Xie,Qianyu Zhao,Jinping Guan,Chunhong Wu,Peng Wang
Developing eco-friendly durable flame-retardant cotton fabric not only expands its application area, but also caters to the healthy and environmentally friendly concept of consumers. Herein, a reactive P/S/N-containing synergistic flame retardant (PSN) was synthesized to prepare eco-friendly durable flame-retardant cotton fabric through chemical modifying method. Flame-retardant finishing deteriorated the softness, whiteness, tensile strength and air permeability of cotton fabric. PSN conferred outstanding flame retardancy, fire safety and durability to cotton fabric. For treated fabric with the add-on of 14.2%, it achieved an LOI value of 36.5% and extinguished spontaneously even after 50 laundering cycles. Its peak heat release rate, total heat release and fire growth rate index values decreased sharply than those of the control fabric. PSN exhibited high-efficiency flame-retardant behavior, and the synergy between P, S and N elements facilitated the formation of intumescent barrier on the fiber surface during combustion. The hydrolysis of covalent bond and formation of phosphate/sulphonate during laundering both accounted for the decrease in flame retardancy of treated fabric.
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高影响因子
Journal of Materials Chemistry A
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2023
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IF 11.9
Luyao Zheng,Cong Liu,Wenbiao Zhang,Boxu Gao,Tianlan Yan,Yahong Zhang,Xiaoming Cao,Qingsheng Gao,Yi Tang
To design and build effective electrocatalysts for water splitting is a key challenge, but hardly any non-noble metal catalysts can match the performance of Pt at cathodes and Ir or Ru at anodes. The synergistic combination of non-noble metal catalysts could be a better option for overall water splitting (OWS). Herein, a heterostructured electrocatalyst of MoP/CoMoP2 nanoparticles embedded in N, P-doped carbon matrix (MoP/CoMoP2@NPC) was fabricated via reticular chemistry. Results indicate that, due to the cooperative effect of MoP/CoMoP2 interfaces and phosphorous vacancies, MoP/CoMoP2@NPC shows the extraordinarily efficiency and robust stability for hydrogen/oxygen evolution reactions and OWS in a wide pH range. This work could offer a promising interface-engineering approach to develop and build effective cooperative electrocatalysts for the sustainable production of hydrogen.
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
Xusheng He,Chao Xiao,Huichao Du,Yanyan Wang,Xin Ding,Kang Zheng,Meng Xue,Xingyou Tian,Xian Zhang
Poly(p-phenylene-2,6-benzobisoxazole) (PBO) fiber and polytetrafluoroethylene (PTFE) resin have been widely acknowledged as excellent wave-transparent materials for future high-frequency applications due to their exceptional dielectric properties. However, the weak interfacial bonding between these two materials hampers their full potential. In this study, we successfully addressed this limitation by enhancing the surface roughness of PBO fibers and introducing active sites through the in-situ grafting of silica nanowires. The added silica acted as an interfacial anchor on the PBO fiber surface, significantly improving the bonding force between PBO and PTFE. PBO/PTFE wave-transparent laminated composites were fabricated using hot compression molding. The results demonstrate that the PBO (treated with in-situ grown silica)/PTFE laminated composites exhibit superior interlaminar shear strength (ILSS), flexural strength, flexural modulus, and tensile modulus compared to the pristine PBO/PTFE laminated composites. Specifically, these properties are found to be 58.6%, 32.9%, 138.1%, and 25.35% higher, respectively. Additionally, these composites demonstrate low dielectric constant and dielectric loss. Most notably, they achieve a wave transmittance of 91.45% at 10 GHz, indicating significant potential for wide-range applications in next-generation advanced military weapons, such as “lightweight/high-strength/wave-transparent” electromagnetic window materials, as well as civilian communication base stations.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2023
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IF 4.3
Yang Li,Ling Ling,Chuan-Fan Ding
Human milk oligosaccharides (HMOs), the third most abundant components in breastmilk, show high structural diversity with many isomers. Here, we proposed a trapped ion mobility spectrometry-mass spectrometry (TIMS-MS) strategy for the differentiating and isomer-specific quantification of HMOs combined with Girard reagent P-d 0 /d 5 (GP-d 0 /d 5 ) derivatization . Three functional HMO isomer pairs including LNT/LNnT, 3'-SL/6'-SL, and 2'-FL/3'-FL were investigated by the proposed method. The GP-derivatized HMO isomers showed enhanced ionization efficiency (8-fold) and achieved mobility separation with ΔCCS % ≥ 3.7% in TIMS-MS. With the GP-d 5 derivatized HMOs as an internal standard, HMOs in real samples could be quantified by derivatization with GP-d 0 , and each isomeric species could be further determined based on their corresponding mobility peaks. The recoveries of spiked HMOs are obtained at 72.4 − 109%. Thus, an isomer-specific quantification strategy for HMO isomers was developed based on the GP-d 0 /d 5 derivatization and TIMS-MS.
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高影响因子
Journal of Cleaner Production
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2023
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IF 11.1
Zeying Yang,Boyong Cao,Yi Cao,Xiaowei An,Xiyan Yue,Guoqing Guan,Yanhao Zhang,Baoxian Ye,Zhengkun Xie
Emerging contaminant N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine has caused severe threats to ecosystems, necessitating the development of highly sensitive detection methods. Herein, a reliable and ultra-sensitive electrochemical sensor based on a carbon paste electrode modified by hexagonal wurtzite zinc oxide was developed for selective determination and degradation of N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine. Experimental results demonstrated the successful application of the sensor for detecting N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine in soil samples. The contaminant contents were found to be 1.46–24.68 nmol L −1 in Zhengzhou City and 1.99–11.3 nmol L −1 in Pingdingshan City, respectively, along with a satisfactory recovery rate. Density functional theory calculations revealed that the hexagonal wurtzite zinc oxide crystal significantly decreased the activation energy of catalytic conversion compared to cubic sphalerite , resulting in a notable improvement in sensor response. Cryogenic electron microscopy technique further confirmed that the electrocatalytic degradation product of N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine was not toxic N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine quinone . Under optimal analysis conditions, the sensor achieved widely low as well as high linear ranges (0.1–800 nmol L −1 and 0.9–20 μmol L −1 ) with a low detection limitation (33 pmol L −1 ), indicating that such a highly sensitive and cost-effective electrochemical sensor has the potential for environmental pollutants monitoring .
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高影响因子
JOURNAL OF POWER SOURCES
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2023
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IF 9.2
Peng Wang,Tao Yu,Liping Hao,Xuanwen Liu
Efficient electrocatalysts are crucial for overcoming the sluggish kinetics of the oxygen-evolution reaction (OER) and facilitating the advancement of energy storage technologies such as metal-air batteries and hydrogen production through water electrolysis. This study proposes a synergistic approach combining amorphization and interfacial engineering to improve OER performance by fabricating heterojunctions between crystalline NiFe(OH) x and amorphous NiP x . The formation of a strongly coupled crystalline-amorphous heterojunction enables optimization of the electronic structure at the catalytic site and accelerates charge transfer at the interface, thereby improving the reaction kinetics. Notably, we investigate the dynamic adsorption behavior of PO 4 3− during the OER process by introducing Na 3 PO 4 into the electrolyte, revealing that P vacancies serve as active sites in promoting OER activity. Lastly, electrochemical measurements demonstrate that NiFe(OH) x /NiP x /NF exhibits a low overpotential of 220 mV at 10 mA cm −2 and Tafel slope of 35 mV·dec −1 , surpassing the performance of laboratory-prepared noble metal catalysts and most reported NiFe-based electrocatalysts.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Xiao Xu,Yucheng Dong,Fangfang Liu,Hui Wang,Xuyun Wang,Xiaoyuan Li,Jianwei Ren,Rongfang Wang
Electrochemical urea electrolysis holds great potential for energy-efficient hydrogen production and wastewater treatment . However, developing cost-effective and highly active catalysts remains a challenge. In this study, a novel bifunctional electrocatalyst of Ni–Zn bimetallic nanosheets (ZnO–Ni 2 P) was synthesized on Ni foam (NF) for efficient urea decomposition in urea-containing wastewater. The results showed that inactive ZnO phase acted as an "electron pump", which facilitated electron redistribution between Ni and P atoms and created localized vacancies of Ni and P cations. This optimized electronic configuration enhanced the kinetics of both the urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). Additionally, a unique particle-porous structure with abundant grain boundaries was achieved through the utilization of the Kirkendall Effect and Ostwald Ripening . In an alkaline urea electrolysis system , the alkaline urea electrolyzer assembled with ZnO–Ni 2 P/NF sample as both electrodes exhibited a low driving potential of only 1.424 V to achieve a current density of 10 mA cm −2 , which outperformed the commercial noble metal-based electrolyzer (RuO 2 ||Pt/C). The results verify that incorporating an inactive phase to manipulate the electronic structure of the active phase can be an effective strategy in developing catalysts for urea electrolysis.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Xu Zhang,Zifang Peng,Shijiao Hou,Qiannan Sun,Hang Yuan,Dan Yin,Wenfen Zhang,Yanhao Zhang,Jianwei Tang,Shusheng Zhang,Zongwei Cai
p -Phenylenediamine (PPD) antioxidants are heavily used for protection of commercial rubber products (e.g., vehicle tire), resulting in their widespread contamination in ecosystem. PPD-quinones (PPDQs), the toxic quinone derivatives of PPDs, are also discovered as novel environmental pollutants. However, the contamination characteristics of PPDs/PPDQs in fresh atmospheric snow (without deposition on the Earth surface) have seldom been studied. This work first reports the broad distributions of PPDs and PPDQs in fresh atmospheric snow collected from seven Chinese urban areas. Individual median values of detected concentrations were in the ranges of 0.4 to 260 pg g −1 (PPDs) and 0.7 to 104 pg g −1 (PPDQs). The concentration deviation by long-term deposition on the ground was eliminated. In most sampling regions, wearing of vehicle rubber tires was possibly responsible for spatial-dependent PPDs’ pollution level variations, and high concentrations of PPDs promoted PPDQs’ formation in snow from atmosphere. Yet, excessive O 3 may further oxidize and reduce PPDQs in atmospheric fresh snow from Zhengzhou, which is different from previous research. Furthermore, snowfall was noticed might amplify concentrations of three PPDs and PPDQs in an inland lake, which possibly worsen corresponding pollution in water system. Current study elucidates the potential impacts of snow-bound PPDs/PPDQs on ecosystems should not be underestimated.
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PubMed
高影响因子
APPLIED ENERGY
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2023
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IF 11.2
Shuang Liu,Limin Ma,Cheng Zhen,Dan Li,Yishu Wang,Qiang Jia,Fu Guo
Bismuth telluride-based thermoelectric (TE) devices were widely used in waste heat recovery due to their high thermoelectric figure of merit (ZT), but the severe diffusion between Sn-based solder and TE pillar generated porous and brittle Sn-Te intermetallic compound (IMC), which seriously restricted the reliable service of devices. Ni-based coating was used but the thick Ni-Te IMC also impaired the properties of TE pillars. In this work, the crystalline Co-P coating was inserted between the p-type TE material Bi 0.5 Sb 1.5 Te 3 and the solder by electrodeposition, and the power generation sustainability of the TE pillar were significantly improved, and the mechanism was revealed. The microstructural characterization proved that the Co-P coating could effectively resist the diffusion of active Sn, Bi, Sb, Cu atoms. Co-P coating would provide support for the structural integrity and performance sustainability of TE pillars. It was worth noting that an ultrathin CoTe 2 IMC layer was formed between the Co-P coating and the Bi-Sb-Te pillar, which was much thinner than the Ni-Te IMC layer reported in the literature. This indicated that Co-P only consumed little thermoelectric elements, but also a good metallurgical bond was formed between the Co-P and the Bi-Sb-Te. After aging at 423 K for 150 h, the maximum output power and average Seebeck coefficient of the TE pillar without coating dropped significantly by 74% and 34%, respectively, and the internal resistance rose by 67%. Remarkably, the maximum output power and average Seebeck coefficient of the TE pillar protected by the Co-P coating only decreased by 14% and 5%, respectively, and the internal resistance only increased by 6%.
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高影响因子
FUEL
·
2023
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IF 7.4
Yuwei Ma,Yan Li,Fenglong Zhang,Fei Ruan,Ruifen Wang,Guangtong Hai,Juming Liu,Jinxiao Bao
Ni directional doping in the lattice of CdS V with the Ni cations targeted linked to P (CdS V -Ni-P) was successfully synthesized via a step wise assembly method, which exhibited an excellent photocatalytic hydrogen production performance. The photoelectric performance characterization proved that the Ni directional doping and Ni cations targeted linked with P in CdS V -Ni-P not only accelerating the photo-generated electrons transfer but also decreasing efficiency of the charge recombination. The density functional theory (DFT) calculations proved that CdS V -Ni-P can also induce more charge-carriers participate in photocatalytic reaction and decrease electron binding restriction capacity. Moreover, the results of UV–vis DR spectra and VB-XPS spectra confirmed that the construction of this CdS V -Ni-P could effectively narrow the bandgap. Meanwhile, the result of Gibbs free energy demonstrated the S-H adsorption bond in CdS V -Ni-P was get weaken, which is benefit for hydrogen desorption from S sites, thus achieving a high hydrogen evolution reaction (HER) result. Based on the synergistic effects, CdS V -Ni 6.7 -P 9.6 presented a relatively high hydrogen evolution rate of 167.5 mmol h -1 g −1 under the visible light irradiation (λ ≥ 420 nm), which is almost 60 times of CdS V .
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
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IF 8.4
Wei Wu,Jingyu Long,Yuanjun Guo,Xiaotao Zu,Sean Li,Xia Xiang
A surface acoustic wave (SAW) H 2 S gas sensor based on CuO-TiO 2 p-n heterojunction film was designed and fabricated. The sensor exhibits high sensitivity to H 2 S due to the significant current response of CuO-TiO 2 film to H 2 S gas and the appropriate work point of SAW sensor based on CuO-TiO 2 composite film. The linearity change for sensor frequency shift is strongly associated with the location of work point when the H 2 S concentration increases from 1 to 300 ppm. In addition, the porosity of CuO-TiO 2 film is beneficial to the efficient adsorption for H 2 S, leading to the higher frequency shift of the sensor. The SAW sensor also shows good selectivity and stability to H 2 S with stable frequency shift under different humidity levels.
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高影响因子
危险品化学品经营许可证（带存储）