DALTON TRANSACTIONS
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2023
·Vol. 52
·期 40
·14435-14442
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IF 4
Qihao Wu,Tao Xie,Li Zhang,Hui Ding,Heju Gao,Jiahui Jiang,Guancheng Xu
To achieve broad commercialization of rechargeable metal–air batteries, the development of non-precious metal-based bi-functional oxygen electrocatalysts is critical. In this study, we prepared N,S co-doped porous carbon materials containing Co9S8 nanoparticles (Co9S8/NSC) through a one-step pyrolysis process. The process involved the pyrolysis of a polydopamine (PDA) coated Co-formic acid framework (Co-FF) derived Co3O4 and thiourea. The improved catalyst Co9S8/NSC-1 exhibited satisfactory long-term durability and superior oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) activity, the half-wave potential (E1/2) of the ORR reached 0.83 V, and the OER overpotential at 10 mA cm−2 (η10) was 300 mV. The zinc–air battery (ZAB) based on Co9S8/NSC-1 assembly had a maximum power density of 102.0 mW cm−2 and the cycle life reached 500 cycles. The material preparation method was simple, environmentally friendly and inexpensive, providing a feasible strategy for the development of non-precious metal-based electrocatalysts.
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2023
·
IF 5.1
Wei Zhang,Bingtao Wang,Yan Xia,Wei Wang,Zhenghong Guo,Zhengping Fang,Juan Li
It is a great challenge to prepare polyamide 6 (PA6) compounds with outstanding fire safety and mechanical properties. In this research, a flame retardant containing P/N/S elements (SNDP) was synthesized using 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), 2-thiophene-carboxaldehyde and 4-aminobenzonitrile. The PA6/SNDP compounds were prepared using a melt blending method. Two chain extenders were incorporated into PA6/SNDP compounds to adjust their mechanical properties. The results suggest that PA6 compound with 10 wt% SNDP obtains a UL-94 V-0 rating (1.6 mm) and a limiting oxygen index (LOI) value of 27.4 vol%. SNDP induces the degradation of PA6 and decreases its mechanical properties. While the two chain extenders have reinforced effects on PA6/SNDP and this effect of 1,3-phenylene-bis-oxazoline is superior to another one. Moreover, the main flame-retardant mode of actions for SNDP in PA6 is gas-phase effect, including scavenging free radicals and diluting flammable gases.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Chengduan Wang,Wan Gou,Changlu Liu,Dong Fu,Lvshan Zhou,Chuan Lai,Bin Xie,Shasha Zhu
The new corrosion inhibitor of S-benzyl-O,O'-bis( p -tert-butyl phenyl)dithiophosphate (SOBP) was synthesized and characterized by elemental analysis, FT-IR, 1 H NMR, 13 C NMR, 31 P NMR and single crystal X-ray diffraction. Meanwhile, the corrosion inhibition and mechanism of SOBP for Q235 steel in 1.0 M HCl were studied by weight loss and potentiodynamic polarization measurement, also the crystal structure of corrosion inhibitor was presented. The potentiodynamic polarization measurement result indicates that SOBP is a mixed-type inhibitor. The two methods all reveal that the inhibition efficiency increases with the concentration of SOBP, which is an effective corrosion inhibitor. The adsorption of SOBP on Q235 steel surface in 1.0 M HCl belongs both physisorption and chemisorption.
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ACS Applied Energy Materials
·
2023
·
IF 6.4
Lele Lu,Qiang Li,Runhao Zhang,Jialong Jiang,Shiqi Zhang,Jiachen Guo,Peng Cheng,Wei Shi
Transition-metal phosphides (TMPs) are regarded as ideal HER electrocatalysts owing to their rich reserve, flexible composition, competitive activity, and excellent stability. Yet, TMPs still suffer from poor electrical conductivity and agglomeration under a high synthetic temperature of the solid-state reaction. Benefiting from the monodisperse metal sites with organic matrix surrounded, metal–organic frameworks (MOFs) have great potential as a feedstock to produce MOF-derived TMPs with tailored microenvironments of the active sites. Herein, a series of nanostructured Ni2P@SNC were facilely fabricated by a one-step phosphorization of a well-designed Ni-MOF with red phosphorus as a “P” source. The optimal Ni2P@SNC-800 displayed an overpotential of 80 mV in 1.0 M KOH and 97 mV in 0.5 M H2SO4 at 10 mA cm–2, demonstrating excellent HER performance as well as long durability in both electrolytes. The comprehensive performance of Ni2P@SNC-800 surpasses that of other heteroatom-free MOF-derived Ni2P significantly. This work provides a facile approach for the design and synthesis of MOF-derived TMPs coated with a heteroatom-doped carbon matrix as an electrocatalyst with high activity.
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Journal of Materials Chemistry A
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2023
·Vol. 11
·期 35
·19091-19106
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IF 11.9
Xiaoyun Chen,Pengkun Zhang,Dong-Hau Kuo,Qinhan Wu,Adugna Boke Abdeta,Binghong Wu,Zhengjie Su,Longyan Chen,Osman Ahmed Zelekew,Jinguo Lin
Herein, we demonstrated S2− anion incorporation into BiVO4 for converting an oxidative-type BiVO4 photocatalyst into a reductive-type BiV(S,O)4−x (labeled BiVOS) sulfo-oxide photocatalyst for efficient N2 fixation under an ambient environment. BiVOS-2 not only exhibited the highest NH3 production rate of 563.6 μmol g−1 h−1 without sacrificial agents and with durable stability but also had an apparent quantum efficiency (AQE) of 2.18% at 420 nm and a solar-to-ammonia (STA) conversion efficiency of 0.071% in pure water under AM1.5G light irradiation. At the same time, the sulfur-free BiVO4 can't realize N2 to NH3 conversion. The S2− doping introduced Vo, which converted V5+ around Vo into V4+ to keep the electrical neutrality. The active atoms V4+ were exposed and activated N2, and the electron hopping between V5+ and V4+ improved electron transfer. Density functional theory (DFT) calculation indicates that S2− anion doping can enhance adsorption energy, elongate the NN bond of the adsorbed N2 molecule, and facilitate electron transfer to the antibonding orbital of the N2 molecule, leading the BiVOS sulfo-oxide catalyst to have excellent N2 fixation activity. This study provides a promising method for converting an oxidative-type catalyst into a reductive catalyst to extend material applications.
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TALANTA
·
2023
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IF 6.1
Mengjiao Li,Yu Wu,Chenxi Ke,Zichen Song,Meie Zheng,Qingjie Yu,Hongda Zhu,Huiling Guo,Hongmei Sun,Mingxing Liu
In this study, an ultrasensitive unlabeled electrochemical immunosensor for the detection of cardiac troponin I (cTnI) was developed based on Pt/Au modified B,S,N co-doped reduced graphene oxide (Pt/Au–B,S,N-rGO) as a signal amplification platform. First-principles calculations were employed to analyze the electron density of states of Pt/Au–B,S,N-rGO, revealing an increase in the electron density of the graphene oxide (GO) states. Furthermore, scanning electron microscopy (SEM), X-ray photoelectron diffraction spectroscopy (XPS), and electrochemical detection were used to successfully construct and analyze Pt/Au–B,S,N-rGO. The results showed that B,S,N-rGO exhibited good electrochemical activity, and the Au/Pt NPs demonstrated excellent catalytic properties, which provided a strong foundation for achieving high-sensitivity detection. Moreover, the constructed unlabeled electrochemical immunosensor had an ideal linear range (0.1 pg/mL∼50 ng/mL) and detection limit (0.082 pg/mL). In human serum detection, the results of this immunosensor were essentially similar to the ELISA results for the same samples, which suggested that the immunosensor had a promising clinical application prospect for the detection of cTnI.
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高影响因子
Solar RRL
·
2023
·
IF 7.9
Zihao Wang,Chengwu Shi,Rui Cao,Kai Lv,Changsheng Ye,Wangchao Chen,Guiju Hu,Fuling Guo,Yanqing Wang
Herein, Na 2 SSeO 3 solutions are prepared by hydrothermal method at 140 °C for 8 h using Se powder and Na 2 SO 3 solution (the molar ratios of Se:Na 2 SO 3 = 1:4, 1:5, 1:6) and the chemical composition of Na 2 SSeO 3 solutions is analyzed by X-ray photoelectron spectroscopy. Sb 2 S y Se 3− y thin films are prepared by chemical bath deposition (CBD) at 90 °C for 5 h and subsequently annealed at 375 °C for 10 min and etched by N -butyldithiocarbamic acid solution in DMF. The effect of the Na 2 SSeO 3 solution, growth solution volume, etching on the thickness and chemical composition of Sb 2 S y Se 3− y thin films, and the power conversion efficiency (PCE) of the corresponding solar cells is systematically investigated. The result reveals that the Na 2 SSeO 3 solutions may be the mixing solutions containing Na 2 SSeO 3 , Na 2 S 2 SeO 6 , Na 2 S 2 Se 2 O 6 , Na 2 Se. When the molar ratio of Se:Na 2 SO 3 and growth solution volume is 1:5 and 56 mL and the Sb 2 S y Se 3− y thin films with annealing are etched, the PCE of Sb 2 S y Se 3− y solar cells is 8.00% with spiro-OMeTAD and 8.43% with spiro-OMeTAD:TMT-TTF. The PCE of 8.43% is the highest value for Sb 2 S y Se 3− y solar cells using CBD and demonstrates that the composition engineering is an important strategy for improving the PCE of Sb 2 S y Se 3− y solar cells using CBD.
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CHEMOSPHERE
·
2023
·
IF 8.8
Yunlei Zhou,Zhuangzhuang Wang,Huanshun Yin,Xiaoting Cui,Ying Tian,Zhen Qiao,Suo Wang,Runye Hu,Wenjing Lv,An Mao,Jun Wang
2D Ag/BiOCl/Bi 2 O 2 CO 3 S-scheme heterojunction was prepared with oxygen vacancy (OVs) via one-pot hydrothermal method. The XRD and XPS analysis indicated the synthesized sample contained Ag nanoparticles (AgNPs) instead of Ag ions. The SEM and HRTEM pictures showed that BiOCl/Bi 2 O 2 CO 3 nanosheets were modified with AgNPs. Compared with AgNPs, BiOCl, and Bi 2 O 2 CO 3 , Ag/BiOCl/Bi 2 O 2 CO 3 exhibited highly photocatalytic inactivation of pathogenic fungi ( Fusarium graminearum ) due to the wide light absorption range and S-scheme heterojunction structure, which improved the production and transfer of photogenerated carrier, and enhanced the separation of photogenerated e − /h + pairs. In addition, the improved photocatalytic disinfection against Fusarium graminearum of Ag/BiOCl/Bi 2 O 2 CO 3 was verified in Sedeveria Letizia plant . Furthermore, active species capture assay and ESR experiments disclosed the involvement of OVs, h + , ∙O 2 − , ∙OH, and – for Fusarium graminearum destruction during photocatalysis process. The S-scheme heterojunction was proved via oxygen vacancy, which was extensively beneficial to increase charge transmission and separation efficiency. Our work proposed Ag/BiOCl/Bi 2 O 2 CO 3 was an efficient and ecological fungicide to inactive Fusarium graminearum in vitro and vivo for crop disease .
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JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
·
2023
·
IF 3.4
Yang Chang,Yafei Xia,Xiaojun Liu,Putian Yu,Furong Fan,Yangyang Shi,Shixin Yan,Shu Yan
Background Cholestasis is a commonly occurring disorder induced by impaired bile flow, for which there is no effective treatment so far. Qingre Lidan decoction (QRLD) is a clinically used herbal compound for the long-term treatment of bile circulation disorders arising from inflammation and obstruction in the gallbladder and bile ducts. The objective of this study was to investigate the protective effect of QRLD on cholestatic liver injury and its possible mechanism. Methods α-Naphthyl isothiocyanate (ANIT) was used to induce cholestatic liver injury in rats. Liver histopathology and serum biochemical markers were used to assess QRLD's protective impact. The possible biomarkers and mechanism of the therapeutic benefits of QRLD were investigated using a UHPLC-based Q-Exactive Orbitrap MS / MS untargeted serum metabolomics technique together with 16 S rRNA microbiota profiling. Afterwards, using RT-qPCR as well as Western Blot techniques, the expression of pertinent indicators was determined. Results The intervention effect of QRLD was stronger at medium and high dosages than at low doses, and it dramatically decreased the levels of serum biochemical markers in cholestatic rats reflecting alterations in liver function and relieving ANIT-induced abnormalities in the liver's histopathology. Serum metabolomics showed that QRLD could affect the metabolic profile of cholestatic rats, mainly related to glycerophospholipid metabolism, taurine and hypotaurine metabolism, alanine, aspartate and glutamate metabolism, and histidine metabolic pathway. Additionally, analysis of 16 S rRNA gene sequencing indicated that QRLD could moderate ANIT-induced microbiota disorders, particularly Romboutsia, Bifidobacterium, Fusicatenibacter, Prevotella_9, Prevotellaceae_NK3B31_group and Prevotella_1. Other experimental results showed that QRLD significantly upregulated the mRNA and protein expression of PPARα, CYP7A1 and NTCP in the liver, inhibited the expression of p-IκBα, p-p65 and TNFα while increasing the anti-inflammatory factor IL-10, and downregulated the expression of MDA (a peroxidation product) and D -lactic acid (an intestinal barrier indicator) while increasing the expression of SOD and GSH. Conclusions QRLD can effectively regulate endogenous metabolites and microbiota disorders in cholestatic rats that are correlated with the attenuation of inflammation and oxidative stress.
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高影响因子
POLYMER
·
2023
·
IF 4.6
Jingjing Hou,Lu Han,Shuzheng Sun,Mingkai Li,Junbo Yue,Yanqin Yang,Jingde Li
The commercialization of lithium-sulfur (Li-S) batteries has been restrained mainly by lithium polysulfides (LiPSs) shuttling and sluggish electrochemical reactions . Herein, a functional separator with synergy effect between adsorption and catalysis is proposed to solve the above problems. Specifically, an ultrathin barrier layer of a functionalized intrinsic microporous polymer (Li-AOPIM-1) is coated on SWCNT gutter layer through spin coating and applied to modify the cathode side of commercial polypropylene (PP) separator. In this configuration, the robust SWCNT gutter layer with high conductivity can not only work as a physical barrier to block the macropores of PP separator, but also improve the integral conductivity, resulting in a rapid charge migration and reaction kinetics. The electronegative heteroatoms N and O in Li-AOPIM-1 top layer have strong adsorption capability to LiPSs so that modified separator can restrain the shuttle effect admirably. Moreover, the introduction of lithiated sites further enhance the lithium-ion conductivity. Accordingly, the Li-S batteries implementing this modified separator deliver stable lifespan with only 0.062% capacity fading rate per cycle after 500 cycles at 1 C and superior rate performance of 700.6 mAh g −1 at 3 C. This work will provide a feasible strategy for the practical applications of high-performance Li-S batteries.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yu Wang,Yuxin He,Yujing Chi,Peiji Yin,Lishan Wei,Wenwen Liu,Xinyao Wang,Han Zhang,Haiyan Song
Photocatalytic H 2 O 2 production is a green and sustainable technology, which still exposes the issues of excessive dependence on organic electron donors and pure O 2 , and lacking effective use. It is necessary to develop more efficient and more economical photocatalysis system for H 2 O 2 production. Here, we construct a S-scheme p-n heterojunction from the p-type MnS and the n-type protonated g-C 3 N 4 (PCN) semiconductors for photocatalytic H 2 O 2 production and achieve the in situ use of H 2 O 2 for oxidative degradation of oxytetracycline (OTC). The PCN/MnS composite synthesized by a one-step method well maintains a nanosphere structure of α-MnS and load the PCN on the sphere surface to form a heterojunction with strong interaction. PCN/MnS exhibits the improved photogenerated charge separation and electron transfer efficiency. An optimal photocatalyst can produce 669.6 μM of H 2 O 2 for 6 h without using the electron donors and the pure O 2 gas. The mechanism proposed the contribution of a S-scheme p-n heterojunction forms between PCN and MnS. The electrons in conduction band (CB) of MnS are responsible for the major single-electron reduction of •O 2 - radicals and the auxiliary two-electron reduction of O 2 for H 2 O 2 production, while the holes in valence band (VB) of PCN further promote the separation of photocarriers. The photogenerated H 2 O 2 can be effectively used as an in-situ oxidant to achieve 82.2% degradation of OTC in water within 80 min. The •O 2 - radicals which originate from the in situ decomposition of H 2 O 2 over PCN/MnS mainly contribute to the OTC oxidation .
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CATALYSIS COMMUNICATIONS
·
2023
·
IF 3.7
Qirui Zhang,Xiushuai Guan,Xiaokun Wang,Xiaochao Zhang,Changming Zhang,Jinbo Xue,Caimei Fan
The construction of heterojunction structure is an effective strategy for solving photogenerated electron-hole recombination. In this work, a kind of 1D/2D S-scheme BiPO 4 /BiOBr heterojunction film is designed and constructed by in-situ electrochemical-ion-exchange method on Bi plate. The S-scheme transfer path of photogenerated electrons of BiPO 4 /BiOBr film is collaboratively confirmed through DFT calculation and in-situ X-ray photoelectron spectra. As-prepared S-scheme BiPO 4 /BiOBr heterojunction film has the higher CO 2 photoreduction activity (296.5 μmol·g −1 ) to CO, 1.9 times than pure BiOBr film, which should be mainly attributed to improved light utilization efficiency and effective separation/migration of photogenerated electron-hole pairs.
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