ENERGY
·
2025
·
IF 9.4
Yulei Zhang,Zonglu Yao,Junyi Ma,Jiadong Yu,Ping Ai,Ruixia Shen,Yi Liang,Lixin Zhao
Low interspecies electron transfer efficiency among microorganisms is a critical factor limiting anaerobic digestion performance. In this study, conductive and stable biochar (BC) was combined with redox-active anthraquinone-2-sulfonate (AQS) to enhance electron transfer efficiency through their synergistic effects, thereby improving the efficiency of anaerobic digestion. Results showed that cumulative methane production (CMP) reached 176.34 mL/g VS under optimal conditions, including an AQS impregnation concentration of 1 mmol/L, a BC/AQS addition of 5 %, and a total solid (TS) content of 10 %. The addition of BC/AQS enriched Proteiniphilum and Methanobacterium , which shifted the methanogenic pathway from acetoclastic to hydrogenotrophic, significantly improving volatile fatty acid conversion and total organic carbon degradation. Redundancy analysis (RDA) and changes in key enzyme-encoding genes indicated that BC/AQS enhances the synergistic interaction between Proteiniphilum and Methanobacterium through the redox activity of quinone/C=O functional groups, which may play a key role in the formation of direct interspecies electron transfer (DIET). This study provides a promising strategy to enhance microbial electron transfer mechanisms in anaerobic digestion by leveraging the complementary properties of meso-materials, offering new insights into the utilization of agricultural waste for energy production.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Guang-Yuan Wang,Shan-Shan Yang,Jie Ding,Cheng-Xin Chen,Le Zhong,Lan Ding,Ming Ma,Guo-Sheng Sun,Zong-Liang Huang,Nan-Qi Ren
In this study, a novel solid-phase redox mediator (RM) was manufactured via immobilizing anthraquinone-2-sulfonate (AQS) onto modified biochar (BC). The RM was used to enhance the anaerobic granular sludge (AGS) driven anaerobic biodegradation of azo dyes. Prepared at the optimal pyrolysis temperature of 550 ℃, the AQS modified BC550 exhibits a higher adsorption capacity of about 12.81% toward AQS compared to that of commercial granular activated carbon (GAC). X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy analyses showed that BC550-AQS contained more redox moieties (quinone and C = O) than GAC-AQS, indicating that the BC550 is suitable as a carrier of immobilized AQS. During the 36-h reaction, incubation of BC550-AQS as the solid-phase RM obviously enhanced the capacity of AGS (BC550-AQS + AGS), evidenced by the maximum percentage of Reactive Red 2 (RR2) decolorization (92.27%), which increased up by 80.55% and 14.48% compared to the controls (BC550-AQS, 17.95%) and (GAC-AQS + AGS, 78.61%). Besides, BC550-AQS exhibits good reusability and a higher RR2 decolorization rate (per AQS dosage) over 15 consecutive cycles. The mechanism of biodegradation pathway of RR2 initiated by BC550-AQS was studied using liquid chromatography-mass spectrometry and chemical computation. Density-functional theory calculations successfully predict that the RR2 biodegradation pathway mainly includes azo bond cleavage and electron attraction with a stronger electron affinity. This work not only proposes a deep insight into the biodegradation pathway of RR2 by employing BC550-AQS in an anaerobic biological system but also develops effective solid-phase RMs for efficient removal of contaminants from wastewaters by biological treatment.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
高影响因子
CHEMICAL PAPERS
·
2024
·
IF 2.1
Lin Yan,Ren Yu,Lin Xiaoyun
Reduced graphene oxide (RGO) loaded with sodium anthraquinone-2-sulfonate (AQS) was prepared using one-pot hydrothermal synthesis. The phase, composition and structure of the prepared materials were characterized by transmission electron microscope (TEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (XRD). The AQS, RGO and AQS/RGO on functionalized carbon cloth (FCC) electrodes were established. The performance of AQS/FCC, RGO/FCC and AQS/RGO/FCC were tested by galvanostatic charge–discharge (GCD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The specific capacitance ( C s ) of AQS/FCC, RGO/FCC and AQS/RGO/FCC is 9.29, 194.8 and 402.5 F g −1 at the current density ( C d ) of 0.5 A g −1 , respectively. After 1000 cycles of charging and discharging, the capacity retention of AQS/RGO/FCC remained at 92.6%. Therefore, the AQS/RGO/FCC electrode exhibits excellent rate performance, excellent charging and discharging performance and cycling stability in supercapacitors (SCs).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2010
·
IF 3
Wenchao Peng,Fengbao Zhang,Guoliang Zhang,Bo Liu,Xiaobin Fan
Gold nanoparticles supported on four different metal oxides were prepared and applied in the chemoselective reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid (DNS). With sodium formate as hydrogen source, > 99% of the DNS was transformed into 4,4′-diaminostilbene-2,2′-disulfonic acid (DSD) without the reduction of olefinic group, which uncovers a clean synthetic approach for useful amino substituted stilbene sulfonic acids.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2019
·
IF 2.584
Fanfan Gao,Xinyu Li,Yue Zhang,Chengde Huang,Wen Zhang
Redox flow batteries have received wide attention because of their unique advantages such as high efficiency, long cycle life, low operating cost, and independent adjustment of energy power. In this study, five types of anthraquinone derivative organic redox couple were selected, and the surfaces of graphite felt were modified. When the number of functional groups is increased or the substitution position is closer to the carbonyl (C═O) groups, a more pronounced hindrance for the C═O reaction on the benzene ring is observed; thus, the electrochemical performance and reversibility decreases. Sodium 9,10-anthraquinone-2-sulfonate solution is the best organic redox couple in terms of both reversibility and electrochemical performance. It was also found that all the surface treatment methods of graphite felt are beneficial for improving their electrochemical performances. All these superior results demonstrate that the graphite felt treated under air exposure at 550 °C for 3 h exhibited the best electrochemical performance, which might be attributed to the increase in the content of C–OH functional groups.
研究领域:
储能技术
·
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2017
·
IF 4.075
Qiongzhen Liu,Bo Wang,Jiahui Chen,Fei Li,Ke Liu,Yuedan Wang,Mufang Li,Zhentan Lu,Wenwen Wang,Dong Wang
In present work, polypyrrole (PPy) has been in-situ polymerized on a poly(vinyl alcohol- co -ethylene) (PVA- co -PE) nanofirous textile to form a 3D interconnecting PPy nanowires/nanofibrous textile composite electrode (designated as NW-PPy/NFs/PET). It demonstrates that the introduction of anthraquinone-2-sulfonic acid sodium (AQS) can tune the morphology of PPy from nanospheres to nanowires. The resulting PPy@PVA- co -PE conformal nanofibers act as bridges among intertwined PPy@PET fibers and PPy nanowires, leading to continuous pathways for ion/electron transfer and larger surface area for faradic reaction. Benefiting from this unique structure, the two-electrode supercapacitor using NaCl solution as electrolyte delivers a high power density of 800 W kg −1 at an energy density of 20 W h kg −1 per mass of active materials. Furthermore, the symmetric all-solid-state NW-PPy/NFs/PET supercapacitor demonstrates high flexibility and cycle stability. Therefore, this work may open a new way to develop light weight and cost-effective electrodes for flexible energy storage devices.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2019
·
IF 4.018
Sixuan Xiao,Yujie Zhang,Long Ma,Shan Zhao,Nan Wu,Debao Xiao
In this paper, 1,1′-bis (2-sulfonatoethyl) viologen (SEV) and 1,1′-bis (3-sulfonatopropyl) viologen (SPV) as chromophore were synthesized and used to fabricate hydrogel-based electrochromic devices . The electrochromic hydrogel, consisting of SEV (or SPV), water, sodium carboxymethylcellulose and 1,1′-ferrocenedimethanol, was employed to fabricate all-in-one electrochromic devices. The proposed SEV/SPV-based hydrogel electrochromic devices have satisfactory coloration efficiency up to 304 cm 2 /C, response times below 3 s and driving voltages below −0.8 V. Surprisingly, SEV-based hydrogel and SPV-based hydrogel electrochromic device showed high cycling stability, attenuating 2% after 10000 cycles and attenuating 1% after 8000 cycles, respectively. The easy-to-make process for device and outstanding electrochromic properties of the hydrogel containing SEV and SPV make it promising to achieve environmentally benign electrochromic devices for smart windows and so forth.
研究领域:
材料科学
·
电化学
·
光电
✓ 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）