MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
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IF 4.6
Yunlan Xu,Jiaxin Mou,Lin Dong,Qingmei Qiao,Dengjie Zhong
The performance of photocatalytic fuel cell (PFC) depends on photoanode, which is the key to generate photoexcited carriers and degrade organic wastes. In this study, ZnIn 2 S 4 nano-bandgap semiconductor and polypyrrole were used to modify TiO 2 to prepare polypyrrole/ZnIn 2 S 4 /TiO 2 /Ti photoanode to increase its photo-response range and the separation of photoexcited carriers. The PFC with polypyrrole/ZnIn 2 S 4 /TiO 2 /Ti photoanode and copper cathode was built to degrade RhB and generate electricity. The RhB removal rate, open-circuit voltage, short-circuit current density, and maximum power density of the photocatalytic fuel cell were 94.6 % (1 h), 0.47 V, 0.23 mA cm −2 and 21.11 μW cm −2 , respectively. The improvement of PFC performance is attributed to the good visible-light responsive properties of polypyrrole/ZnIn 2 S 4 .The presence of polypyrrole acts as both an electron donor and a hole acceptor, which provides an ideal pathway for the separation and transmission of photogenerated carriers. The synergistic effect of polypyrrole, ZnIn 2 S 4 and TiO 2 eventually increases the photocatalytic ability of the PFC. This research can offer reference for the study of TiO 2 -based efficient visible light responsive PFC.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Catalysts
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2019
·Vol. 9
·期 10
·835
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IF 3.444
Jiawen Li,Ruizhen Li,Luomei Zou,Xingyong Liu
Photocatalytic fuel cell (PFC) has been verified to be a promising technique to treat organic matter and recover energy synchronously. Sulfate radicals (SO4·−), as a strong oxidant, have obvious advantages in the degradation of refractory pollutants compared with hydroxyl radicals (·OH), which is the dominant radical in PFC. This study reports a coupling method of PFC and persulfate (PS) activation to promote the degradation of antibiotic norfloxacin (NOR) and simultaneous electricity generation. The added PS as an electron acceptor could be activated by photoelectric effects to produce SO4·−at the electrodes-electrolyte interface. In the solution, PS as supporting electrolyte could accelerate the electron transfer and also be activated by ultraviolet (UV) light irradiation, which could extend the radical oxidation reaction to the whole solution and improve the PFC performance. The performance comparison among different systems indicated the excellent synergistic effect of PFC and PS activation for improving NOR degradation and electricity generation. The effects of influencing factors including initial pH, PS concentration, and initial NOR concentration on the degradation of NOR were investigated extensively to find out the optimal conditions. Moreover, according to the results of radical capture experiments, the significantly contribution of both SO4·−and ·OH to the degradation of NOR was demonstrated and a tentative function mechanism for the NOR degradation in the proposed system was provided. Finally, total organic carbon and real wastewater treatment confirmed the high mineralization and practical applicability of the proposed PFC/PS system.Keywords:photocatalytic fuel cell;persulfate activation;norfloxacin;degradation;electricity generation
研究领域:
环境科学
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化学工程
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DOI
高影响因子
WATER RESEARCH
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2021
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IF 11.236
Xiangyu Chen,Juanjuan Yao,Hongsen Dong,Mingjian Hong,Naiyun Gao,Zhi Zhang,Wenchao Jiang
A collaborative system including peroxymonosulfate (PMS) activation in a photocatalytic fuel cell (PFC) with an BiOI/TiO 2 nanotube arrays p-n type heterojunction as photoanode under visible light (PFC(BiOI/TNA)/PMS/vis system) was established. Xenon lamp was used as the light source of visible light. A 4.6 times higher pseudo-first-order bezafibrate (BZF) degradation rate constant was achieved in this system compared with the single PFC(BiOI/TNA)/vis system. The radical quenching experiments revealed that the contribution of reactive oxidative species (ROS) followed the order of 1 O 2 ≈ h + >> •OH > SO 4 •− >>O 2 •− . The EPR tests demonstrated that PMS addition enlarged the formation of 1 O 2 , •OH and SO 4 •− , but suppressed O 2 •− yield. Interestingly, 1 O 2 was further proved to dominantly originated from the priority reaction between positive photoinduced holes ( h + ) and negatively charged PMS. Besides, N 2 -purging tests and density functional theory calculation indicated that PMS probably reacted with residual photoinduced electron ( e − ) on the more negative conduction band (CB) of BiOI to form •OH and SO 4 •− , but competed with dissolved oxygen. Other e − transferred to the less negative CB of TNA through p-n junction will efficiently move to cathode through the external circuit. The greatly promoted power generation of PFC system was observed after PMS addition due to extra h + consumption and efficient e − separation and transfer. Besides, three possible pathways for BZF degradation were proposed including hydroxylation, fibrate chain substituent and amino bond fracture. This study can provide new insights into the mechanisms of PMS assisted photocatalysis and accompanying energy recovery.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
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2025
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IF 6.7
Hanlu Zeng,Yunlan Xu,Dengjie Zhong,Qingmei Qiao,Yuqin Yang,Jitai Li
Photocatalytic fuel cell (PFC) is a new device that can efficiently degrade organic pollutants and recover their energy. This paper used solvothermal method to prepare a flower-like copper bismuth oxide/bismuth oxy bromide/Chitosan/Titanium (CuBi 2 O 4 /BiOBr/CS/Ti) photoanode. It was then assembled with a Cu cathode to produce a PFC for reducing rhodamine B (RhB) and generating power. Different analytical methods were utilized to analyze the photoanode's chemical composition, crystal structure, and electrochemical properties. CuBi 2 O 4 /BiOBr/CS/Ti had higher photocatalytic activity than single and binary composite photoanodes, which had good stability. The RhB degradation rate, maximum power density ( P max ), maximum photocurrent density ( J sc ) and the fill factor ( FF ) of the PFC were 90.98 %, 30.80 μW·cm −2 , 0.283 mA·cm −2 and 0.22, respectively. The results of transient photocurrent (i-t), electrochemical impedance spectra (EIS) and Mott-Schottky (M-S) spectra, and free-radical capture experiments indicated that the enhancement of the photocatalytic performance of the CuBi 2 O 4 /BiOBr/CS/Ti photoanode was due to the formation of the Z -scheme heterojunction between CuBi 2 O 4 and BiOBr and the electron mobility of CS. This achieved the rapid separation and transfer of electron (e − )-hole (h + ) pairs and maintained the strong oxidation of holes in the valence band (VB) of BiOBr and the strong reduction of electrons in the conduction band (CB) of CuBi 2 O 4 . This research introduces a novel approach to design and establish excellent performance photoanode of PFC system.
研究领域:
环境科学
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材料科学
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电化学
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DOI
高影响因子
Journal of CO2 Utilization
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2019
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IF 5.189
Fengjia Xie,Rong Chen,Xun Zhu,Qiang Liao,Dingding Ye,Biao Zhang,Youxu Yu,Jinwang Li
Carbon dioxide (CO 2 ) as greenhouse gas is the primary cause of global warming. One of the ideal routes to remedy CO 2 emission is to transform it to hydrocarbons by photocatalytic reduction of CO 2 . However, poor yield and product selectivity of photocatalytic reduction of CO 2 pose significant challenges to its widespread applications. To address this critical issue, a coupled system that integrates photocatalytic reduction of CO 2 with photocatalytic fuel cell (PFC) is developed for direct power generation using CO 2 . In this coupled system, the products by photocatalytic reduction of CO 2 works as the fuels for the PFC to directly generate electricity. Direct power generation by this coupled system is demonstrated via only in the presence of CO 2 as the input under illumination. A short circuit current density of 0.175 mA/cm 2 and a maximum power output of 0.110 mW/cm 2 are yielded for the case with the supply of CO 2 , which are much higher than those without CO 2 . Moreover, it is interesting to find that the fuel concentrations at the PFC outlet are even higher than those at the PFC inlet, implying that the coupled system proposed in this study can not only generate the electricity but also yield the solar fuels. This work opens a new avenue for the CO 2 utilization toward direct power generation.
研究领域:
环境科学
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能源工程
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化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2018
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IF 6.434
Xuefeng He,Ming Chen,Rong Chen,Xun Zhu,Qiang Liao,Dingding Ye,Biao Zhang,Wei Zhang,Youxu Yu
In this work, a photocatalytic fuel cell (PFC) with membrane electrode assembly (MEA) structure was designed for simultaneous organic compounds degradation and electricity generation. For the photoanode, the TiO 2 with the quantum-dot sensitization by CdS-ZnS was used to broaden the absorption spectrum to visible light. For the cathode, an air-breathing mode was utilized to enhance the oxygen transport. The performance of the developed PFC was evaluated under different operation conditions, including the light intensity , liquid flow rate, concentrations of electrolyte and organics. Results indicated that the designed PFC could yield good performance. The increase of the light intensity and electrolyte concentration could improve the PFC performance . It is also found that when the flow rate was increased, the PFC performance dropped down in the testing range. Too high organics concentration led to the decrease of the PFC performance.
研究领域:
环境科学
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能源工程
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材料科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Qingsong Zhang,Qimou Deng,Yaoyao Zhang,Yang Xiao,Chunlei Zhang,Haiyi Gong,Qingming Zeng,Qingyan Zhang,Qingyi Zeng
Unavoidable organics in uranium wastewater or contaminated waters derive great challenges to traditional uranium removal techniques. Here, a drivingpower enhanced photocatalytic fuel cell (DEPFC) is designed by using a carbon felt (CF)-based UiO-66-NH 2 derived zirconia (ZrO 2 )/N-doped porous carbon (ZrON-C/CF) cathode and a monolithic photoanode, composing of a front FTO glass-based BiVO 4 film and a rearmounted Si photovoltaic cell, for effectively oxidizing organics and simultaneously reducing UO 2 2+ from complex wastewater under sunlight illumination. The water contact angle measurements demonstrate that ZrO 2 can improve the hydrophilia of cathode thus increases the contact between UO 2 2+ and cathode. The density functional theory indicates that N-doping can enhance the electronegativity of cathode and increases UO 2 2+ adsorption. Meanwhile, the enhanced UO 2 2+ reduction facilitates the charge separation in BiVO 4 film, therefore enhancing the organic oxidation. Consequently, under AM 1.5 illumination, the designed DEPFC can remove almost 100% of UO 2 2+ and simultaneous degrade 99% organics within 40 min
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2018
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IF 4.61
Linsen Li,Jinhua Li,Jing Bai,Qingyi Zeng,Ligang Xia,Yan Zhang,Shuai Chen,Qunjie Xu,Baoxue Zhou
Toxic and refractory organic pollutants are continually discharged into the water environment, which has become the crisis for the human living and sustainable development. However, organic pollutants also contain large amounts of chemical energy. In this paper, we studied the effect and mechanism of organic pollutants oxidation and chemical energy conversion for neutral wastewater via strengthening reactive oxygen species (ROS) of HO and O 2 − in a photocatalytic fuel cell (PFC) system, since ROS has the power to oxidize or even mineralize the organics and is environment-friendly to treat refractory organic pollutants. In our PFC system, the HO was enhanced by the cyclic radical chain reaction via the addition of Fe 2+ and tetrapolyphosphate (TPP), while O 2 − was enhanced by setting an additional bias voltage at the anode which was favorable to O 2 production. The results show that the HO and O 2 − concentration are highly enhanced, showing 8.28 and 8.99 times those of traditional PFC, respectively. Meanwhile, the degradation rate constant is remarkably increased by 6.52 times when methylene blue is used as a model pollutant. Furthermore, the performance of wastewater PFC is so improved that the short-circuit current density ( J sc ) and maximum power density ( J V max ) have been increased by a factor of 9.05 and 12.67 times in the same experiment, respectively.
研究领域:
环境科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Jun Zhang,Longwei Li,Jili Zheng,Penglin Yang,Xuehong Wu,Chuanxiao Cheng,Jun Li,Yongjia Tian,Fan Wang
A coupling system combining Fenton process with dual rotating disk photocatalytic fuel cell (PFC) was developed to improve methyl orange (MO) removal and simultaneous electricity production, in which the (NH 4 ) 3 PO 4 modified bamboo charcoal (BC) was acted as cathode catalyst. Due to the existence of the N and P containing functional groups on the BC catalyst and the rotating electrode, the hybrid system could efficiently reduce oxygen to generate some hydroxyl radical and related species for MO removal. Therefore, Fenton-PFC-BC with rotation system showed a superior MO removal efficiency of 85%, 2.4 times higher than that in the traditional Fenton-PFC-Pt with aeration system. The radicals inhibition assays and hydrogen peroxide quantitative studies revealed that HO , h + and O 2 − were primarily responsible for MO degradation. Furthermore, the MO removal performance for Fenton-PFC-BC with rotation system was investigated at different parameters (such as rotating speed, BC loading, pH and ferrous ion concentration) to obtain optimal operation conditions. Results of energy analysis and reusability experiment showed that the proposed Fenton-PFC-BC with rotation system provided a cost-effective and stable method for the organic degradation and energy recovery.
研究领域:
环境科学
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化学工程
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能源技术
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Hanlu Zeng,Yunlan Xu,Dengjie Zhong,Yuqin Yang,Qingmei Qiao
Photocatalytic fuel cell (PFC) provides a new method to degrade organic pollutants and recover their energy simultaneously. In this work, a novel flower-like hierarchical photoanode (PANI/Bi 2 Sn 2 O 7 /BiOBr/Ti) was synthesized by solvothermal method and assembled with Cu cathode to form a PFC for rhodamine B (RhB) degradation and simultaneous power generation. The crystal structure, chemical composition, and morphology of the photoanode was characterized by a variety of analysis techniques. The photocatalytic activity of the ternary hierarchical composite photoanode was superior to that of single and binary composite photoanodes. Its maximum photocurrent density, maximum power density, degradation rate and FF were 0.241 mA·cm −2 , 21.52μW·cm −2 , 92.97 % (90 min) and 0.18, respectively. In addition, it still maintains high photocatalytic activity after five consecutive uses. Based on the analysis results of transient photocurrent (i-t), EIS, DRS spectrum, M-S curve and free radical capture experiments, the improvement of photocatalytic performance of PANI/Bi 2 Sn 2 O 7 /BiOBr/Ti photoanode is attributed to the formation of dual Z-scheme heterojunction between PANI and BiOBr and between Bi 2 Sn 2 O 7 and BiOBr, which realizes the rapid separation and transfer of electron-hole pairs, and retains the strong oxidation of holes in VB of BiOBr and the strong reduction of electrons in LUMO of PANI and CB of Bi 2 Sn 2 O 7 . This study provides a new research idea for the design and construction of high efficiency photoanode in PFC system.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Xiangyu Chen,Juanjuan Yao,Bin Xia,Jingye Gan,Naiyun Gao,Zhi Zhang
The influence of pH and dissolved oxygen (DO) on the degradation of ofloxacin (OFX) in water by UVA-LED/TiO 2 nanotube arrays photocatalytic fuel cell (UVA-LED/TNA PFC) was investigated. The degradation pathway depended on the location of OFX frontier orbital with different ionization states and the role of reactive oxidative species (ROSs) played with varied pH and DO values. In presence of DO, the quencher tests revealed that O 2 − played a key role at pH 3.0, 7.0 and 11.0, while OH made its greatest contribution at pH 3.0 and the effect of h + was largely inhibited at pH 11.0. Hydroxylation for cationic OFX was more significant, while demethylation and piperazinyl ring oxidation for anionic OFX occurred more quickly compared to other forms. Besides, zwitterionic OFX underwent decarboxylation and combination of demethylation & hydroxylation more easily. Much higher power generation was observed in presence of DO at pH 7.0, probably due to the enhanced adsorption of OFX on the TNA, and DO could amplify the electric potential between the two electrodes. The degradation efficiencies were almost the same in presence or absence of DO, but the pathways were different and e- aq may replace O 2 - as the leading ROSs in absence of DO.
研究领域:
环境科学
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化学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Meng Tan,Hao Du,Yangjie Fu,Xin Ma,Ningyi Li,Derek Hao,Qi Wang
High-efficiency photoelectrode played a significant role in photocatalytic fuel cell (PFC) systems. In this study, a zinc-based metal-organic framework modified by carbon quantum dots (N-Zn-MOF/CQDs) and the BiVO 4 were respectively presented as the photocathode and photoanode of the PFC system toward Cr(Ⅵ) reduction. Various analytical techniques were utilized to characterize the physicochemical, optical and photoelectrochemical properties of the as-prepared samples. With the addition of CQDs, the visible-light response and charge separation rate were remarkably enhanced. In the PFC system, the circuit current density of 58.04 mA cm −2 and max power density of 1.35 mW cm −2 were achieved, which was superior to other reported PFC systems. Under optimized conditions, 100% Cr(Ⅵ) can be removed within 120 min of visible-light illumination. This work provided a new method to decorate the zinc-based metal−organic framework cathode to dramatically improve the photocatalytic performance.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）