ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Siyu Zhang,Changdong Ke,Mengge Jiang,Yuancheng Li,Weilin Huang,Zhi Dang,Chuling Guo
Efficient remedies for living organisms including bacteria to counteract cadmium (Cd 2+ ) toxicity are still highly needed. Plant toxicity studies have showed that exogenous S(-II) (including hydrogen sulfide and its ionic forms, i.e., H 2 S, HS − , and S 2− ) application can effectively alleviate adverse effects of Cd stress, but whether S(-II) could mitigate bacterial Cd toxicity remains unclear. In this study, S(-II) was applied exogenously to Cd-stressed Shewanella oneidensis MR-1 and the results showed that S(-II) can significantly reactivate impaired physiological processes including growth arrest and enzymatic ferric (Fe(III) reduction inhibition. The efficacy of S(-II) treatment is negatively correlated with the concentration and time length of Cd exposure. Energy-dispersive X-ray (EDX) analysis suggested the presence of cadmium sulfide inside cells treated with S(-II). Both compared proteomic analysis and RT-qPCR showed that enzymes associated with sulfate transport, sulfur assimilation, methionine , and glutathione biosynthesis were up-regulated in both mRNA and protein levels after the treatment, indicating S(-II) may induce the biosynthesis of functional low-molecular-weight (LMW) thiols to counteract Cd toxicity. Meanwhile, the antioxidant enzymes were positively modulated by S(-II) and thus the activity of intracellular reactive oxygen species was attenuated. The study demonstrated that exogenous S(-II) can effectively alleviate Cd stress for S. oneidensis likely through inducing intracellular trapping mechanisms and modulating cellular redox status. It suggested that S(-II) may be a highly effective remedy for bacteria such as S. oneidensis under Cd-polluted environments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yuan-li Wang,Tong-hui Yang,Song Yue,Hang-bo Zheng,Xiao-pan Liu,Peng-zhao Gao,Hang Qin,Han-ning Xiao
Composition optimization, structural design, and introduction of external magnetic fields into the catalytic process can remarkably improve the oxygen evolution reaction (OER) performance of a catalyst. NiFe2O4@(Ni, Fe)S/P materials with a heterogeneous core–shell structure were prepared by the sulfide/phosphorus method based on spinel-structured NiFe2O4 nanomicrospheres. After the sulfide/phosphorus treatment, not only the intrinsic activity of the material and the active surface area were increased but also the charge transfer resistance was reduced due to the internal electric field. The overpotential of NiFe2O4@(Ni, Fe)P at 10 mA cm–2 (iR correction), Tafel slope, and charge transfer resistance were 261 mV, 42 mV dec–1, and 3.163 Ω, respectively. With an alternating magnetic field, the overpotential of NiFe2O4@(Ni, Fe)P at 10 mA cm–2 (without iR correction) declined by 45.5% from 323 mV (0 mT) to 176 mV (4.320 mT). Such enhancement of performance is primarily accounted for the enrichment of the reactive ion OH– on the electrode surface induced by the inductive electric potential derived from the Faraday induction effect of the AMF. This condition increased the electrode potential and thus the charge transfer rate on the one hand and weakened the diffusion of the active substance from the electrolyte to the electrode surface on the other hand. The OER process was dominantly controlled by the charge transfer process under low current conditions. A fast charge transfer rate boosted the OER performance of the catalyst. At high currents, diffusion exerted a significant effect on the OER process and low OH– diffusion rates would lead to a decrease in the OER performance of the catalyst.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 27
·14674-14681
·
IF 11.9
Huaikun Zhang,Wentao Wang,Zechuan Dai,Yin Zhu,Mingyu Cheng,Bocheng Zhang,Yafei Feng,Yangyang Zhang,Genqiang Zhang
Ru clusters have great potential as excellent bifunctional catalysts for the hydrogen evolution reaction (HER) and hydrazine oxidation reaction (HzOR), but suffer from the difficulty of stabilization on the substrate and tuning the electronic environment. Herein, we present Ru clusters supported on N, S co-doped hollow carbon spheres (Ru/NSCS) by elaborately designed Ru–S bonds to anchor Ru clusters and optimize the surrounding coordination environment. The Ru/NSCS exhibits superior electrocatalytic performance for the HER and HzOR, where an ultrasmall overpotential of 40 mV and a working potential of −81 mV at 10 mA cm−2 can be achieved, respectively. The two-electrode system requires an applied voltage of only 26 mV to achieve 10 mA cm−2 and remains stable for 20 hours. Theoretical calculations reveal that the Ru–S bonds induce partial charge transfer from Ru clusters to the N, S co-doped carbon base, thus optimizing the adsorption energy of *H and dehydrogenation intermediates of N2H4.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xusen Cheng,Bo Liu,Yunfeng Qiu,Ke Liu,Zhuluni Fang,Jinteng Qi,Zhuo Ma,Tiedong Sun,Shaoqin Liu
Commonly used dense arrays of nanomaterials on carbon cloth (CC) are not suitable to accommodate microorganisms in microbial fuel cells (MFCs) due to their unmatched size. To simultaneously enrich exoelectrogens and accelerate the extracellular electron transfer (EET) process, SnS 2 nanosheets were selected as sacrificial templates to prepare binder-free N,S-codoped carbon microflowers (N, [email protected] ) by polymer coating and pyrolysis . N, [email protected] showed a cumulative total charge of 125.70C/m 2 , approximately 2.11 times higher than that of CC, indicating its better electricity storage capacity. Moreover, the interface transfer resistance and diffusion coefficient in bioanodes were 42.68 Ω and 9.27 × 10 -10 cm 2 /s, respectively, superior to CC (141.3 Ω and 1.06 × 10 -11 cm 2 /s). Remarkably, N,S-codoped carbon microflowers excreted more flavin than CC, as confirmed by continuous fluorescence monitoring. Biofilm and 16S rRNA gene sequence analysis revealed that exoelectrogens were enriched, and nanoconduits were generated on the N, [email protected] anode. In particular, flavin excretion was also promoted on our hierarchical electrode, effectively driving the EET process. MFCs equipped with the N, [email protected] anode could deliver a power density of 2.50 W/m 2 , coulombic efficiency of 22.77 %, and chemical oxygen demand (COD) removal amount of 90.72 mg/L/d, higher than that of bare CC. These findings not only demonstrate that our anode is capable of solving the cell enrichment issue, but it may also increase EET rates by bound flavin with outer membrane c-type cytochromes (OMCs) to simultaneously boost the power generation and wastewater treatment performance of MFCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 23
·7869-7875
·
IF 4
Deling Wang,Lu Chen,Yuzhou Xia,Ruowen Liang,Xiyao Liu,Shaoming Ying,Guiyang Yan
Developing novel photocatalysts with an intimate interface and sufficient contact is significant for the separation and migration of photogenerated carriers. In this work, a novel Co@NC/ZnIn2S4 heterojunction with a strong Co–S chemical bond was formed at the interface between Co@NC and ZnIn2S4, which accelerated charge separation. Meanwhile, the recombination of the electron–hole pairs was further restricted by the Co@NC/ZnIn2S4 Schottky junction. The Co@NC (5 wt%)/ZnIn2S4 composite exhibited an H2 evolution rate of 33.3 μmol h−1, which is 6.1 times higher than that of the pristine ZnIn2S4, and Co@NC/ZnIn2S4 showed excellent stability in the photocatalytic water splitting reaction. Its apparent quantum yield reached 38% at 420 nm. Furthermore, the Kelvin probe test results showed that the interfacial electric field formed as the driving force for interface charge transfer was oriented from Co@NC to ZnIn2S4. In addition, the Co–S bond as a high-speed channel facilitated the interfacial electron transfer. This work reveals that in situ formed chemical bonds will pave the way for designing high-efficiency heterojunction photocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2023
·
IF 4.1
Baikang Zhu,Qinbin Dong,Jianghua Huang,Mengmeng Yang,Xianlei Chen,Chunyang Zhai,Qingguo Chen,Bohong Wang,Hengcong Tao,Li Chen
Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi2Sn2O7/β-Bi2O3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi2Sn2O7 on β-Bi2O3 microspheres. The optimized Bi2Sn2O7/β-Bi2O3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of β-Bi2O3. This improvement originated from higher photoelectron–hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of ·O2– and ·OH. Additionally, Bi2Sn2O7/β-Bi2O3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi2Sn2O7/β-Bi2O3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Hui Lv,Zuoyi Xiao,Shangru Zhai,Xuting Wang,Jingai Hao,Qingda An
Developing advanced electrode materials for high-performance supercapacitor applications is of great significance. However, it challenging due to the low specific capacitance of carbon-based electrodes and the sluggish charge transfer kinetics of pseudocapacitive materials. In this work, a hybrid electrode material was designed and prepared to enhance the electrochemical performance. Pseudo-active copper sulfide (Cu x S) particles were uniformly loaded on the skeleton of S-doped sodium carboxymethyl cellulose (CMC)-derived 3D hierarchical porous carbon (S-CPC). Owning to the good electron conduction at the interface, abundant micro-/mesoporous pathways, large accessible surface, and excellent redox activity of Cu x S particles, the optimized Cu x S@S-CPC-400 sample showed a high specific capacitance of 1372 F g −1 (191 mAh g −1 ) at a current density of 0.5 A g −1 . Furthermore, the assembled asymmetric supercapacitor with activated carbon and Cu x S@S-CPC-400 as the negative and positive electrodes, respectively, displayed an energy density of 75.3 W h kg −1 at a power density of 380.8 W kg −1 and excellent long-life stability with a capacitance retention of 86.67% over 10000 cycles. This work provides a feasible route to develop hybrid electrodes for high-performance energy storage systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Lijin Wang,Zhongyuan Guan,Zhenyang Liu,Ouyang Lin,Wenrong Cui,Zhe Yin,Aiwei Tang
The interplay between ZnS shelling reaction and cation exchange affected the genuine nanostructure of the multinary Cu–In–S-based nanocrystals (NCs), which arose from the dosage and injection speed of Zn precursors as well as the surface of the seed NCs. The effects of Zn precursors on the growth of Cu–In–Zn–S NCs have been previously reported. However, effective control of cation exchange based on the surface of seed NCs is still lacking. Herein, a seed-mediated growth method was developed to eliminate the instability of free ligands and ions on the seed NCs. The clean surface of seed NCs was critical for balancing the internal cation exchange and epitaxial shelling reaction of NCs. Importantly, the photoluminescence quantum yield of the Cu–In–Zn–S NCs has been improved without peak shift through this method. In this dynamic balanced process, the as-obtained Cu–In–Zn–S NCs were confirmed to be gradient alloyed structures rather than core-shell structures. Furthermore, this method can be used to synthesize green- and red-emission Cu-In-Zn-S NCs as well. This seed-mediated strategy through simple redispersion may pave a way toward the controllable synthesis of NCs with gradient alloyed structures.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
·
2023
·
IF 5.8
Yong-Qiang Xu,Liu-Yuan Zang,Hai-Yu Gao,Jin Peng,Dong-Yun Zheng,Chao Liu,Xiao-Jun Liu,Dong-Bing Cheng,Chun-Nan Zhu
Gd 3+ -doped quantum dots (QDs) have been widely used as small-sized bifunctional contrast agents for fluorescence/magnetic resonance (FL/MR) dual-modality imaging. However, Gd 3+ doping will always compromise the FL of host QDs. Therefore, balancing the Gd 3+ doping and the optical properties of QDs is crucial for constructing high-performance bifunctional nanoprobes . Additionally, most paramagnetic QDs are synthesized in the organic phase and need to be transferred to the aqueous phase for bioimaging. Herein, ingeniously designed shell-doped Cu-In-S/ZnS:Gd 3+ QDs have been prepared in the aqueous phase. It has been demonstrated that isolating paramagnetic Gd 3+ from fluorescent Cu-In-S core via doping Gd 3+ into ZnS shell not only avoided the decrease of FL quantum yield (QY), but also ensured the water accessibility of paramagnetic Gd 3+ ions, by which the FL QY and r 1 relaxivity of Cu-In-S/ZnS:Gd 3+ QDs achieved as much as 15.6% and 15.33 mM -1 ·s -1 , respectively. These high-performance QDs with excellent stability, low biotoxicity, and good tumor permeability were successfully applied for in vivo tumor FL/MR dual-modality imaging, and have shown significant potential in the precision detection and diagnosis of diseases.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Yulin Zhao,Haoyan Huang,Ning Lv,Chunyan Huang,Huili Chen,Han Xing,Chaorui Guo,Ning Li,Di Zhao,Xijing Chen,Yongjie Zhang
Genipin (GP), the reactive metabolite of geniposide (GE), is responsible for GE-induced hepatotoxicity. As a potential detoxification pathway, the inactivation of GP by glutathione S-transferases (GSTs) has not yet been characterized. In this study, the thiol-GSH conjugates of GP, M532-1 and M532-2 were first identified and the catalytic activities of GSTs were investigated both in vitro and in vivo. GSTA1-1 and GSTA4-4 showed high activity in the formation of both thiol-GSH conjugates, whereas GSTA4-4 specifically catalyzed M532-2 formation in vitro. The active GST isoforms protect against alkylation of N-acetylcysteine (NAC), a classic model nucleophile. GST inhibition attenuated M532-1 formation in rat bile, confirming the in vivo catalytic role of GSTs. In conclusion, this study demonstrated the inactivation of GP by GSTs and implied that interindividual variability of GSTs may be a risk factor for susceptibility to GE-induced hepatotoxicity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2022
·
IF 10.753
Da Wang,Shiwen Dong,Siqi Fu,Yi Shen,Tao Zeng,Weiti Yu,Xiaohui Lu,Lizhang Wang,Shuang Song,Jun Ma
It is a feasible strategy to prepare reliable biochar catalysts for heterogeneous catalytic ozonation (HCO) processes by using inexpensive, high quality, and easily available raw materials. Here, an environmentally friendly, simple, and green biochar catalyst rich in nitrogen (N) and sulfur (S) has been prepared by the pyrolysis of kelp. Compared with directly carbonized kelp biomass (KB), acid-activated KB (KBA) and base-activated KB (KBB) have higher specific surface areas and more extensive porous structures, although only KBB displays effective ozone activation. Imazapic (IMZC), a refractory organic herbicide, was chosen as the target pollutant, which has apparently not hitherto been investigated in the HCO process. Second-order rate constants ( k ) for the reactions of IMZC with three different reactive oxygen species (ROS), specifically k O3, IMZC , k OH, IMZC , and k 1O2, IMZC , have been determined as 0.974, 2.48 × 10 9 , and 6.23 × 10 5 M −1 s −1 , respectively. The amounts of graphitic N and thiophene S derived from the intrinsic N and S showed good correlations with the IMZC degradation rate, implicating them as the main active sites. OH and O 2 − and 1 O 2 were identified as main ROS in heterogeneous catalytic ozonation system for IMZC degradation. This study exemplified the utilization of endogenous N and S in biological carbon, and provided more options for the application of advanced oxidation processes and the development of marine resources.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of CO2 Utilization
·
2022
·
IF 8.321
Haolin Du,Yifei Ye,Ping Xu,Jianmin Sun
The development of novel and efficient catalysts for the cycloaddition of CO 2 -epoxide has attracted the interest of researchers. In this work, a series of dicationic vinyl-functionalized imidazolium ionic liquids (ILs) were prepared, then polymerized and further copolymerized with 1,4-divinylbenzene (DVB) by free radical reaction. The synthesized PIL-DVB-IV catalyst presented 93% yield and 99% selectivity to the product of propylene carbonate under the optimized reaction conditions of 110 °C, 2.0 MPa for 6 h. Besides, the PIL-DVB-IV catalyst exhibited excellent recyclability and generality to various epoxides. The potential energy surface of the catalytic reaction was given by the computation of Density Functional Theory (DFT), which further revealed the proton migration catalytic mechanism of PIL-DVB-IV catalyst. The kinetic process of the catalyst was illustrated through the study of catalytic reaction kinetics and the calculation of DFT.
✓ 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）