JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Mohan Zu,Xin Li,Yun Deng,Yiran Hu,Di Zhao,Shukui Shi,Aixin Chen,Xiaoli Jin,Fengyun Su,Haiquan Xie
Photocatalytic hydrogen peroxide (H 2 O 2 ) synthesis in pure water (H 2 O) is challenging because it requires simultaneous efficient charge separation and selective two-electron oxygen reduction. Herein, we report an S-scheme Mn 0.2 Cd 0.8 S/ZnIn 2 S 4 (MZ) heterojunction that synergistically regulates interfacial charge flow and surface oxygen (O 2 ) adsorption configuration. The optimized MZ-15 achieves a H 2 O 2 production rate of 3917.3 μmol g −1 h −1 in pure water without sacrificial agents. The S-scheme pathway promotes charge separation while preserving strong redox capability. More importantly, the pronounced ionic-radius mismatch between Mn 2+ and Cd 2+ in Mn 0.2 Cd 0.8 S induces an asymmetric electronic environment that shifts O 2 adsorption from side-on to end-on (Pauling-type) configuration, thereby favoring O O bond retention and two-electron oxygen reduction reaction (2e − ORR). This work highlights that simultaneous engineering of interfacial charge dynamics and O 2 adsorption geometry is a powerful strategy for highly selective photocatalytic H 2 O 2 production An S-scheme Mn 0.2 Cd 0.8 S/ZnIn 2 S 4 heterojunction achieves coupled interfacial charge-flow engineering and Pauling-type O 2 adsorption to realize selective 2e⁻ ORR for H 2 O 2 production in sacrificial‑agent‑free pure water. Download: Download high-res image (187KB) Download: Download full-size image
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 9
·4277-4287
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IF 3.3
Jiaxin Mou,Yunlan Xu,Dengjie Zhong,Haixing Chang,Jun Li,Chunzi Xu,Hui Wang,Hongyu Shen
To expand the optical absorption range and charge transfer efficiency of photoanode, the ZnIn2S4/PANI/TiO2/Ti photoanode was developed using a coating method and applied in a photocatalytic fuel cell (PFC) system for the removal of organic pollutants and chemical energy recovery. The prepared photoanode obtained a maximum photocurrent density of 4.19 mA cm−2 (1.2 V vs. SCE). The rhodamine B (RhB) removal efficiency, maximum power density (Pmax) and short-circuit current density (Jsc) of PFC constructed with the ZnIn2S4/PANI/TiO2/Ti composite photoanode and Cu cathode were 93.80% (1 h), 18.83 μW cm−2 and 0.26 mA cm−2, respectively. The improved photocatalytic activity of PFC was due to the outstanding photoelectric properties of the ZnIn2S4/PANI hybrid material, in which PANI, as a photosensitizer, promoted the absorption of visible light by the photoanode. The photoexcited electrons of ZnIn2S4 and PANI tend to be directly transferred to the CB of TiO2, while holes accumulate in the VB of PANI to participate in the oxidation reaction. The synergistic effect accelerates the separation of photogenerated electron–hole pairs and improves the photoelectric conversion efficiency of PFC.
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Toxics
·
2022
·Vol. 10
·期 10
·555
·
IF 4.472
Tingting Liu,Fanyu Yang,Liming Wang,Liang Pei,Yushan Hu,Ru Li,Kang Hou,Tianlong Ren
The application of semiconductor photocatalysts with narrow band gaps is hindered by the rapid recombination of electron–hole pairs and limitation of multiple reactive oxygen species (ROS) synchronous generation. A n–n-type direct Z-scheme heterostructured photocatalyst was constructed based on the staggered band alignment of bismuth tungstate (Bi2WO6) and indium zinc sulfide (ZnIn2S4) to reveal the synergistic effect of charge separation and multiple ROS synchronous generation on boosting photocatalytic performance. Under irradiation, electrons in the conduction band (CB) of Bi2WO6and holes in the valence band (VB) of ZnIn2S4recombined at interface to prolong the lifetime of electrons in the CB of ZnIn2S4and holes in the VB of Bi2WO6. Meanwhile, the multiple ROS synchronously generated to oxidize pollutant due to the strong redox ability of electrons of ZnIn2S4and holes of Bi2WO6, which was determined by the CB potential of ZnIn2S4and VB potential of Bi2WO6. The results provided valuable insights for the application of photocatalysts with a narrow band gap in the field of water pollution control.Keywords:photocatalysis;direct Z-scheme heterojunction;charge separation;redox ability;photoelectrochemical property
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2018
·
IF 3.849
Noor Ahmed Nahyoon,Lifen Liu,Kané Rabé,Sarwan Ahmed Nahyoon,Azmat Hussain Abro,Fenglin Yang
In this study, a novel heterojunction silver phosphate-iron-graphene oxide -titanium phosphate (Ag 3 PO 4 /Fe/GTiP) composite was fabricated by the simple chemical process. The prepared composite was characterized by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible spectroscopy (UV-vis), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and electrochemical impedance spectroscopy (EIS). This catalyst was used as anode material in photocatalytic fuel cell (PFC) with cathode catalyst ZnIn 2 S 4 for efficient degradation of rhodamine B (RhB) with sustainable electricity generation. In PFC the degradation of 90% RhB (10 mg/l) with electricity generation of 0.18 V during 70 min was achieved at pH-3 of 0.05 M Na 2 SO 4 electrolyte. By increasing the RhB concentration up to 100 mg/l the electricity generation was increased up to 0.55 V. Under pure photocatalysis degraded 92.14% RhB (10 mg/l) with Ag 3 PO 4 /Fe/GTiP in 90 min. The discoloration efficiency and electricity generation are influenced by factors such as pH, external resistance, dye concentration, and aeration rate in the PFC. After four cycles of reuse, there was no decrease in PFC performance, which proves its positivity for sustainable energy generation as a greener technology.
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CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Huiqin An,Min Li,Wei Wang,Zhaotao Lv,Congying Deng,Jingyuan Huang,Zhen Yin
The novel ternary reduced graphene oxide/1D TiO 2 nanotubes/3D ZnIn 2 S 4 microspheres (rGO/TiO 2 /ZIS) heterostructured photocatalyst with high-efficiency H 2 production capacity under visible light illumination is designed and prepared in this work. In rGO/TiO 2 /ZIS system, the 1D TiO 2 nanotubes are tightly inserted in the interspace of flower-like ZnIn 2 S 4 microspheres, which are further covered by rGO, leading to an intimate contact among ZnIn 2 S 4 , TiO 2 and rGO. The exquisite design of rGO/TiO 2 /ZIS makes it possess remarkable superiority in photocatalysis . Firstly, the unique 3D microsphere structure of ZIS increases the surface area and visible light absorption ability caused by their unique hollow structure. More importantly, the matched CB and VB positions between ZIS and TiO 2 contribute to separate photogenerated holes and electrons of ZIS efficiently under visible light; then, the separated electrons on TiO 2 are further transferred to rGO due to the superior-strong electron-attracting ability of rGO. At last, the thoroughly suppressing recombination of photogenerated holes and electrons is achieved by the mutually-reinforcing synergy among ZIS, TiO 2 and rGO, and thus the hydrogen generation capacity of ZIS is significantly enhanced. The H 2 production amount and rate of rGO/TiO 2 /ZIS (2.0 wt% rGO and 50 wt% ZIS) after 10 h are 4623 μmol/g and 462.3 μmol/g/h, respectively, which is 71.1 times of pristine TiO 2 and 1.6 times of ZIS under the same condition. The apparent quantum yield of rGO/TiO 2 /ZIS (2.0 wt% rGO and 50 wt% ZIS) in 10 h is about 0.6888%. This excellent photocatalytic performance is ascribed to the mutually-reinforcing synergy among ZIS, TiO 2 and rGO, which can be confirmed by X-ray photoelectron spectroscopy, photoelectrochemical measurements and photoluminescence spectrum. Based on the photocatalytic and characterization results, the corresponding mechanism is proposed.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Xiaoman Li,Yuanhua Liu,Haiming Huang,Jianhua Cheng
Photocatalysis-self-Fenton combining photocatalytic production of H 2 O 2 with Fenton reaction has been a hotspot, but the pH limitation and iron sludge production problems remain unsolved. Herein, we proposed a self-fenton system based on N-doped carbon dots modified ZnIn 2 S 4 (NCDs@ZnIn 2 S 4 ) composites that exhibits effective degradation of antibiotics under neutral pH using low amounts of Fe 2+ . The decoration of ZnIn 2 S 4 with NCDs significantly increased the surface area, visible light absorption, charge transfer ability and oxygen adsorption ability. NCDs@ZnIn 2 S 4 composites exhibited a high H 2 O 2 production rate (1528 μM g −1 •h −1 ) under visible light, which was 1.9 and 5.3 times higher than ZnIn 2 S 4 and NCDs, respectively. Meanwhile, the Fe 2+ /NCDs@ZnIn 2 S 4 system with a low concentration of Fe 2+ (1 mg/L) could remove over 95% levofloxacin and oxytetracycline within 30 min. Interestingly, the highest degradation efficiency occurred under neutral pH. Quenching experiments and analytical measurements indicated that the high catalytic performance under pH = 7 with low amounts of Fe 2+ stemmed from the higher amount of inner-generate H 2 O 2 under neutral pH and easy regeneration of Fe 2+ by photoinduced electrons for high •OH yields. Additionally, the Fe 2+ /NCDs@ZnIn 2 S 4 system exhibited high degradation performance under different water matrix and ultrahigh degradation efficiency towards levofloxacin under real sunlight irradiation. The work shows the prospects of photocatalysis-self-Fenton systems for overcoming the pH limitation and the difficulty of iron sludge separation in the purification of effluents.
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Nanoscale
·
2016
·Vol. 8
·期 6
·3711-3719
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IF 7.76
Wei Chen,Tian-Yu Liu,Ting Huang,Xiao-Heng Liu,Xu-Jie Yang
In this report, we rationally designed and fabricated P-C3N4/ZnIn2S4 nanocomposites by in situ immobilizing ZnIn2S4 nanosheets onto the surface of mesoporous P-doped graphite carbon nitrogen (P-C3N4) nanosheets in a mixed solvothermal environment; their application to the photoreduction of 4-nitroaniline was used to estimate the photocatalytic performance. Different to the template route, here the mesoporous P-C3N4 nanosheets were prepared with a template-free strategy. The as-fabricated P-C3N4/ZnIn2S4 nanocomposites were systematically characterized by analyzing the phase structure, chemical components, electronic and optical properties and separation of charge carrier pairs. More importantly, these P-C3N4/ZnIn2S4 heterostructures have been proven to be highly efficient visible light responsive photocatalysts for photo-reduction, and meanwhile exhibit excellent photo-stability during recycling runs. The sufficient evidence reveals that the significantly improved photocatalytic performance is mainly attributed to the more efficient charge carrier separation based on the construction of a close heterogeneous interface. This work may provide new insights into the utilization of P-C3N4/ZnIn2S4 nanocomposites as visible light driven photocatalysts for comprehensive organic transformations in the field of fine chemical engineering.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 24
·14646-14658
·
IF 10.7
Aihua Yan,Tongyang Zhang,Fei Huang,Shijian Lu,Quande Wang,Huaqi Yuan,Ye Gao,Wenxue Zhao,Jixu Zhang,Zigao Su
Exploring visible-light-driven photocatalytic materials for water splitting is of great significance for achieving green and renewable hydrogen fuel. In this work, MoS2/Sv-ZnIn2S4/Cu(OH)2 (MS/Sv-ZIS/COH) dual-junction composites for hydrogen generation were constructed by an in situ structure-tailored technique. Based on the in situ decomposition of Cu3Mo2O9 (CMO), the instantaneous formation of the sulfur vacancy (Sv), Ohmic-type MS/Sv-ZIS heterojunction and Schottky-type Sv-ZIS/COH heterojunction not only markedly boosted the carrier separation and quickly expedited the charge transfer, but also efficiently inhibited charge recombination and significantly accelerated the hydrogen reduction dynamics. As a result, such composites exhibited an optimum hydrogen production rate of 11.5 mmol h−1 g−1, which was approximately 4.6 times higher than that of pristine ZIS. This work provides an in situ design method to construct new photocatalytic materials for accelerating the redox dynamics and enhancing the water splitting performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Weigang Cui,Churu Zhang,Shuangjiang Li,Yi Liu,Long Tian,Mengrui Li,Yunfei Zhi,Shaoyun Shan
In this study, copper oxide (CuO) was prepared by the microwave-assisted hydrothermal technique subsequently, CuO was grown in situ onto different rare metal compounds to prepare Z-scheme heterojunctions to improve the degradation efficiency of tetracycline (TC) in water environments. Various characterization proved the successful synthesis of all composite materials, and the formation of tight heterojunction interfaces, among which, the core–shell structure ZnIn 2 S 4 @CuO exhibited excellent photocatalytic degradation capability. Research results indicated that the degradation efficiency of ZnIn 2 S 4 @CuO for TC (50 mg/L) in the water environment reached 95.8 %, and the degradation rate is 2.41 times and 12.93 times that of CuO and ZnIn 2 S 4 alone, respectively, the reason is because of the introduction of ZnIn 2 S 4 , Z-scheme heterojunction structures and internal electric field (IEF) is constructed and formed to extend the visible light response range of photocatalysts to improve electron-hole separation efficiency, and enhance charge transfer. In addition, ZnIn 2 S 4 @CuO-2 exhibited good stability and reproducibility, with no significant loss of activity after five cycles. Finally, the precise locations of free radical attack on TC were investigated by the combined use of high-resolution mass spectrometry (HR-MC) and frontier electron densities (FEDs), and a reasonable degradation pathway was provided. The results of this research provide a new and viable approach to overcome the limitations of conventional photocatalytic materials in terms of limited visible light absorption range and fast carrier recombination rates, which offers promising prospects for a wide range of applications in the field of wastewater purification.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Jixu Zhang,Liang Mao,Aihua Yan,Fei Huang,Nan Li,Zigao Su,Huaqi Yuan,Bolei Hui,Heng Wang
The sluggish charge-carrier kinetics for conventional photocatalysts severely limit the photogenerated charge utilization and result in unfavorable hydrogen evolution efficiency. To address these challenges, CoS/S v -ZnIn 2 S 4 /Ni(OH) 2 photocatalysts, containing sulfur vacancy, p-n-type heterojunction and Ohmic contact, were successfully constructed via an in-situ technique. Defect-mediated enrichment of photogenerated electrons at sulfur vacancies achieved fast charge transfer and inhibited the carrier recombination. The interfacial electric field (IEF) due to p-n-type heterojunction enhanced the carrier separation and transfer. Ohmic contact rapidly extracted the photogenerated charges and accelerated the hydrogen reduction reaction dynamics. As expected, CoS/S v -ZnIn 2 S 4 /Ni(OH) 2 catalysts reached an impressive hydrogen evolution rate of 19.45 mmol g −1 h −1 , which was 8.61 times higher than that of pure ZIS. This work demonstrates that the synergistic effect between sulfur vacancies and IEF effects may establish a new paradigm for designing high-efficiency multi-component sulfide-based photocatalysts.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Xueling Wei,Yuanhao Yang,Zhen Ma,Qiujie Li,Qian Sun,Dekai Zhang,Enzhou Liu,Hui Miao
Bismuth oxysulfide (Bi 2 O 2 S), as a unique new two-dimensional layered material, has gradually attracted the interest of researchers because of its excellent photoelectric properties. How to enhance its charge kinetics is the key to improve photoelectrochemical (PEC) properties. Herein, the cascade type II-I heterostructure of Bi 2 O 2 S/Bi 2 S 3 /ZnIn 2 S 4 O (oxygen doping) was rationally fabricated by oxygen doping for efficient PEC water splitting through one-step hydrothermal method. Bi 2 S 3 was in close contact with Bi 2 O 2 S through Bi atom sharing, while ZnIn 2 S 4 O has enhanced polarity. The double-synergistic effect of the cascade II-I heterojunction with strong interface interaction and asymmetric crystal modification could greatly promote the transfer efficiency of the surface charge and the bulk charge, inhibited the photogenerated carrier recombination, and enhanced the overall charge dynamics. The results showed that the photocurrent density of Bi 2 O 2 S/Bi 2 S 3 /ZnIn 2 S 4 O composite photoanode was 4.82 mA cm −2 under the condition of 1.23 V vs. RHE, which was 9.09 times with that of monomer Bi 2 O 2 S. This study opened up a new way for the application of Bi 2 O 2 S-based photoelectrodes in the field of PEC water splitting.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guoqiang Zhang,Zhiqi Wang,Tao He,Jingli Wu,Jinzhi Zhang,Jinhu Wu
Exploring efficient and robust CO 2 photoreduction and water splitting photocatalysts are critical for closing the anthropogenic carbon cycle and developing H 2 energy source. Herein, ultrasmall pomegranate-like Z-scheme CdIn 2 S 4 /ZnIn 2 S 4 heterojunctions with abundant vacancies were rationally designed and in-situ constructed though L-cysteine assisted solvothermal method with precipitation conversion strategy. The obtained CdIn 2 S 4 /ZnIn 2 S 4 -3 photocatalyst displays the highest performance in the photocatalytic conversion of CO 2 and H 2 O into CO and H 2 with yields of 1194.5 and 475.7 μmolg −1 h −1 , respectively, which increase respectively by 62.2% and 123.1% compared to CdIn 2 S 4 under the visible light irradiation. In addition, CdIn 2 S 4 /ZnIn 2 S 4 -4 hybrid exhibits excellent stability and activity during the 23-hour continuous HER, the average yield of H 2 in 23-hour is up to 10286.6 μmolg −1 h −1 . This study provides a practical method for in-situ fabrication of ultrasmall pomegranate-like Z-scheme nano-heterostructures with abundant vacancies, which are valuable for efficient and robust implementation in a wide range of environmental and energy applications.
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