Article
Chemistry, Physical
Yaru Wang, Jianjun Zhao, Wenqing Hou, Yiming Xu
Summary: In CdS photocatalysis, loading Ni3S4 can increase the production rates of H2 and H2O2, but the photoelectron accumulation efficiency on the cathode is relatively low. A possible mechanism is proposed, involving interfacial electron transfer from CdS to Ni3S4, followed by increased surface reaction for proton (oxygen) reduction on Ni3S4 sites and sulfide (water) oxidation on CdS sites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Ning Ma, Ruining Cai, Chaomin Sun
Summary: Biomineralization is an important process utilized by microorganisms to sequester heavy metal ions, with this study showing the significant improvement of cadmium resistance and removal abilities in a deep-sea bacterium through CdS nanoparticle biomineralization using L-cysteine. The psTD enzyme was identified as a key factor in enhancing bacterial cadmium resistance and directing the formation of CdS nanoparticles. Results also showed the development of single-enzyme biomineralization of CdS nanoparticles driven by psTD, indicating its potential as a capping reagent for controlling the size and structure of nanocrystals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Andrey Zagoruiko, Pavel Mikenin
Summary: The study showed that in a specific temperature range, high efficiency H2S decomposition can be achieved through chemisorption-catalytic process, with the reaction proceeding in a quasi-stationary mode. The hydrogen yield significantly exceeds the equilibrium values during this process.
Article
Nanoscience & Nanotechnology
Anna Stavitskaya, Aleksandr Glotov, Fereshteh Pouresmaeil, Ksenia Potapenko, Eliza Sitmukhanova, Kristina Mazurova, Evgenii Ivanov, Ekaterina Kozlova, Vladimir Vinokurov, Yuri Lvov
Summary: In this study, a scalable and efficient photocatalyst for sustainable hydrogen production was developed using clay nanotube-templated mesoporous silica and CdS quantum dots. By optimizing the CdS and cocatalyst (Ru) concentration, an efficient visible light photocatalyst was obtained for hydrogen production. The hierarchical structure and presence of Al in the photocatalyst led to improved catalytic activity compared to MCM-41, showing almost 100% efficiency of the catalytically active phase.
ACS APPLIED NANO MATERIALS
(2022)
Review
Energy & Fuels
Mohamad Fakhrul Ridhwan Samsudin
Summary: The idea of supporting the Sustainable Development Goals (SDGs) has led to extensive research on environmentally friendly energy generation methods, particularly solar and hydrogen energy. Photo(electro)catalytic hydrogen production has been explored competitively due to its versatile platform for utilizing solar energy. However, the high voltage requirement for water electrolysis (>1.23 V) poses a bottleneck for this system's economic prospects.
Article
Environmental Sciences
Pinki Kotwal, Rohit Jasrotia, Anant Vidya Nidhi, Jahangeer Ahmed, Sanchit Thakur, Abhishek Kandwal, Mohd Fazil, Saad M. Alshehri, Tokeer Ahmad, Ankit Verma, Naresh Sharma, Rajesh Kumar
Summary: This study focuses on the fabrication of Ga doped Co0.6Cu0.4Fe2O4 nanocatalysts via sol-gel auto combustion for hydrogen production. The nanocatalysts demonstrated excellent photocatalytic and electrocatalytic activity for green hydrogen generation. The results suggest that Ga doped catalysts have potential applications in sustainable energy production.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Physical
Qihong Lu, Haosong You, Wenjian Fang, Xiaochuan Li, Xianghua Zeng, Wenfeng Shangguan
Summary: In this study, CdS quantum dots and Ni2+ were incorporated into layered calcium niobate perovskite KCa2Nb3O10 to achieve efficient visible-light photocatalytic hydrogen production. The photocatalytic activity was significantly enhanced with the increase of the interlayered Ni content. The highly efficient activity can be attributed to the heterojunction structure, which effectively inhibits the recombination of photo-generated electron-hole pairs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhenglong Xia, Rui Yu, Hong Yang, Bifu Luo, Yuanyong Huang, Di Li, Junyou Shi, Dongbo Xu
Summary: This study reports a novel photocatalyst composed of two-dimensional zinc porphyrin nanosheets and cadmium sulfide nanoparticles, which can efficiently utilize both visible and near-infrared light for photocatalytic hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Juan Fang, Fan Sun, Amanj Kheradmand, Haimei Xu, Hao Dong, Xiaoping Yi, Hui Hong, Xunliang Liu
Summary: Thermo-photo catalytic water splitting is a promising method for utilizing full-spectrum solar energy. Two g-C3N4 catalysts (M-CN and C-CN) were synthesized using different precursors and investigated for their synergistic effect between photo and thermal energies. Hydrogen production rates through thermo-photo catalysis, thermal catalysis, and photocatalysis were compared. Results showed that the TPC pathway exhibited higher hydrogen generation rates than TC and PC pathways, indicating a coupling effect between photoelectric and photothermal effects. The mechanism of this synergistic effect was characterized by photoelectrochemical experiments, which showed that higher temperatures promote the separation and migration of charge carriers, explaining the improved hydrogen production rate in thermo-photo catalysis.
Article
Energy & Fuels
Andrey Zagoruiko, Pavel Mikenin
Summary: This research focuses on the simulation of a cyclic chemisorption-catalytic process for H2S decomposition using a solid FeS catalyst-chemisorbent. The simulation confirmed the feasibility of stable cyclic non-stationary operation and the nearly complete decomposition of H2S. The process can be conducted at moderate temperatures with reasonable capital costs, making it economically competitive with conventional technologies.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2022)
Article
Chemistry, Multidisciplinary
Luis Fernando Morelos-Medina, Rufino Nava-Mendoza, Carlos Martin Cortes-Romero, Rodrigo Rafael Velazquez-Castillo, J. Santos-Cruz, Maria de los Angeles Cuan-Hernandez
Summary: Solid solutions ZnxCd1-xS were synthesized using coprecipitation and sonochemistry methods, and the influence of the synthesis method on the morphology and electronic properties of the systems was investigated. X-ray diffraction confirmed the formation of a solid solution with hierarchical morphology, and the crystallite size was found to decrease with the incorporation of Zn in the crystal lattice. Other characterization techniques were also used to study the band edge emission and water splitting performance. The results suggest that the incorporation of Zn enhances the charge separation and defect generation in the catalyst structure, leading to improved hydrogen production.
JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Analytical
Ahmed Hassan, Rabia Liaquat, Naseem Iqbal, Ghulam Ali, Xue Fan, Zelong Hu, Mustafa Anwar, Awais Ahmad
Summary: The performance of photo-electrochemical water splitting was significantly enhanced by developing a ZnS composite with graphene, achieving notable improvements in both photo-current density and hydrogen yield.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Anna Y. Kurenkova, Tatiana B. Medvedeva, Nikolay Gromov, Andrey Bukhtiyarov, Evgeny Y. Gerasimov, Svetlana Cherepanova, Ekaterina A. Kozlova
Summary: The photoreforming of rice and corn starch with simultaneous hydrogen production was investigated over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The study focused on the influence of starch pretreatment conditions on the reaction rate. The maximum rate of H-2 evolution was found to be 730 mu mol h(-1) g(-1) in the solution obtained after starch hydrolysis in 5 M NaOH at 70 degrees C.
Article
Engineering, Environmental
Weilin Zhong, Chao Wang, Hailun Zhao, Suqing Peng, Zhipeng Tian, Riyang Shu, Ying Chen
Summary: In this study, Au nanoparticles loaded on TiO2 nanoflakes were synthesized as efficient photothermal catalysts for bio-derived glycerol photothermal reforming hydrogen production. The study found that the generation of photogenerated carriers is crucial in the photothermal reforming process, and the hot electrons excited by Au nanoparticles promote intermolecular collisions through thermalization. These findings contribute to the understanding of photothermal enhanced reforming and provide insights for the development of renewable energy.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Ozlem Uguz Neli, Oezlem Budak, Atif Koca
Summary: Cadmium zinc sulfoselenide (CdZnSSe) and reduced graphene oxide-cadmium zinc sulfoselenide (RGO)-CdZnSSe composite-based photoelectrodes were fabricated using a facile, simultaneous co-electrodeposition method for the first time. The rCV technique allowed for homogeneous decoration of CdZnSSe particles among RGO sheets, resulting in improved photoelectrochemical performance in hydrogen evolution. The Cd0.8Zn0.2S0.2Se0.8 photodecoration demonstrated the highest photocurrent density (4.08 mA cm-2), which was further increased to 5.00 mA cm-2 by decorating with RGO. The proposed rCV technique showed superiority in fabricating well-controlled RGO-CdZnSSe composite photoelectrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Jinrong Lu, Zihan Li, Huiyuan Gao, Wenquan Cui
Summary: Based on the co-assembly method, pure organic heterojunctions (TCPP/PDINH) were constructed by combining TCPP with the organic semiconductor PDINH, forming a close contact interface through intermolecular pi-pi stacking and hydrogen bond interactions. The enhanced photocatalytic activity of TCPP/PDINH for phenol degradation compared to single aggregates was due to matched energy band positions and close contact interfaces promoting a Z-scheme structure, accelerating charge carrier separation efficiency. Additionally, the presence of two-dimensional PDINH aggregates as a support basement improved the stability of TCPP aggregates, making them heterogeneous and enhancing operation and recycling.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Pengfei Wu, Changli Zhou, Yanpeng Li, Minghui Zhang, Pengxian Tao, Qingling Liu, Wenquan Cui
Summary: In this study, CQD@FeOOH material was prepared using a simple and environmentally friendly two-step process, exhibiting remarkable degradation performance in a synergic photocatalytic/Fenton system; characterization techniques confirmed the material structure and photoelectric performance features; high catalytic activity was maintained through optimization of conditions.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Hongxia Guo, Xiao Wang, Huan Wang, Wenquan Cui, Meng Li, Wanli Xie
Summary: This study demonstrates an effective increase in the CO2 performance of calcium-based adsorbent by incorporating bimetallic oxides with variable valence state. The (Fe-Mn)-doped CaO sample exhibits excellent CO2 adsorption capacity and carbonation conversion, with the enhanced performance attributed to the uniform distribution of particles and the electron transfer between Fe and Mn. The synergistic interaction of Fe and Mn significantly enhances the adsorption kinetics and reduces the activation energy of the carbonation reaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jinrong Lu, Zhimin Li, Li Liu, Wenquan Cui
Summary: Supramolecular photocatalysts based on organic pi-conjugate semiconductors have shown great potential in the field of pollutants photodegradation. This study employed interfacial charge transfer (IFCT) on supramolecular photocatalysts of porphyrins and perylenediimide by Fe(III) ions to enhance the photocatalytic activity for degrading organic pollutants such as phenol. The introduction of Fe(III) significantly improved the photocatalytic activity, with a rate constant up to 42 times higher compared to the system without Fe(III). The enhancement of charge separation via IFCT mechanism was proven to be an effective strategy for improving the photocatalytic oxidation activity of supramolecular photocatalysts.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Shuang Zhao, Caixia Hou, Lirong Shao, Weijia An, Wenquan Cui
Summary: A highly dispersed TiO2 nanoparticle-modified three-dimensional graphene hydrogel composite (TiO2-rGH) with excellent adsorption and photocatalytic degradation performance was successfully prepared. The composite exhibited a large specific surface area and enhanced charge transport channels, resulting in efficient and fast degradation of 2,4-dichlorophenol solution. Moreover, the composite showed good stability and has potential applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Shuyao Wang, Weijia An, Jinrong Lu, Li Liu, Jinshan Hu, Yinghua Liang, Wenquan Cui
Summary: By preparing a Cu/CuFe2O4 catalyst with oxygen vacancies and a photocatalysis-Fenton degradation system, efficient degradation of organic pollutants can be achieved. The degradation activity of this system is superior to traditional photocatalysis and Fenton oxidation methods.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Yaohang Gu, Xuanyu Wang, Ateer Bao, Liang Dong, Xiaoyan Zhang, Haijun Pan, Wenquan Cui, Xiwei Qi
Summary: This study demonstrates the promising strategy of enhancing the electrochemical efficiency through precise engineering of electrical conductivity in single atom catalysts, with the example of phosphorus-doped Rh SAC anchored on Co3O4 nanosheets array. The introduction of P atom significantly improves the catalytic activity for alkaline oxygen evolution reaction and overall water splitting. Moreover, the high conductivity at grain boundary plays a crucial role in improving the charge transfer efficiency of the Rh catalytic center.
Article
Chemistry, Physical
Minghui Zhang, Xiao Wang, Xiwei Qi, Hongxia Guo, Li Liu, Qiao Zhao, Wenquan Cui
Summary: CuO/Ag/UiO-66 catalysts exhibit high selectivity towards HCOOH in photocatalytic CO2 reduction. The formation of a Z-scheme heterojunction between CuO and UiO-66, with Ag as a bridge, promotes charge transfer and separation, leading to the high selectivity. Experimental and theoretical results confirm that CuO is responsible for the activation of CO2, while Ag possesses strong adsorption capacity for *H protons, facilitating the generation of HCOOH.
JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Weijia An, Shining Hu, Tao Yang, Huan Wang, Jinshan Hu, Wenquan Cui, Yinghua Liang
Summary: The Fe-doped two-dimensional BiOCl nanosheets with rich surface oxygen vacancies were prepared and exhibited excellent degradation performance for phenol solution under the photocatalytic-Fenton synergistic effect. The surface oxygen vacancies played a crucial role in enhancing the synergistic degradation activity.
Article
Chemistry, Physical
Chang Liu, Jinrong Lu, Jinshan Hu, Li Liu, Weijia An, Yinghua Liang, Wenquan Cui
Summary: A reduced graphene oxide modified oxygen vacancies-rich CuFe2O4 (rGO/CuFe2O4-OVs) with dual reactive centers was synthesized for efficient removal of tetracycline (TC) through an adsorption-photo Fenton synergistic degradation system. The introduction of rGO increased the specific surface area and accelerated the transfer of photogenerated electrons, while the dual reaction centers improved the degradation efficiency of TC by promoting the separation of photogenerated carriers and providing adsorption active sites for the activation of H2O2.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Weijia An, Huan Wang, Tao Yang, Jiefan Xu, Yushan Wang, Dong Liu, Jinshan Hu, Wenquan Cui, Yinghua Liang
Summary: Fe-doped three-dimensional flower-like structures BiOBr (Fe-BiOBr) with rich surface oxygen vacancies (OVs) were prepared and showed high degradation activity in the presence of H2O2 and visible light irradiation. The Fe-BiOBr composites not only exhibited good removal efficiency for phenolic compounds and coking wastewater, but also had good structural stability. The oxygen vacancies played a crucial role in promoting the photocatalytic-Fenton synergistic degradation activity by improving carrier separation efficiency and acting as the adsorption and activation site of H2O2 to produce hydroxyl radicals.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Weijia An, Shining Hu, Chang Liu, Jinshan Hu, Huan Wang, Wenquan Cui, Yinghua Liang
Summary: Surface-modified Fe2O3 nanoparticles were used to construct two-dimensional sheet structure Bi24O31Cl10 composites (Fe2O3/Bi24O31Cl10), which exhibited excellent charge transport properties and synergistic degradation activity. The degradation rate of phenol reached 94.52% after 75 min of visible light irradiation, which was 6.7 and 3.6 times higher than the photocatalytic and Fenton activities, respectively. The improved degradation activity was attributed to the close interfacial contact and matched energy level structure between Fe2O3 nanoparticles and Bi24O31Cl10, which enabled efficient charge transport and rapid charge separation. Additionally, the valence state transition of Fe ions promoted the generation of more .OH through the Fenton reaction, enhancing the synergistic degradation activity. The active species in the degradation process were investigated, and a photocatalytic-Fenton synergistic degradation mechanism was proposed.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Pengxian Tao, Xiao Wang, Qiao Zhao, Hongxia Guo, Li Liu, Xiwei Qi, Wenquan Cui
Summary: In this study, the morphology and titanium content of TS-1 were optimized using a facile dual-structure directing agent method. The Ti-rich TS-1 nanoplates showed improved photocatalytic H2 production performance from methanol. It was revealed that the nanoplate-like morphology is beneficial to the photocatalytic activity by largely retaining photogenerated electrons. The Ti-O group was proposed to function as the active site for both reduction and oxidation half reactions instead of separate Ti and O sites. The formation of hydroxylated Ti also promoted the photocatalytic performance. These insights into the mechanisms suggest the great potential of Ti-rich TS-1 nanoplates as commercial photocatalytic materials.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Yan Gao, Xiao Wang, Hongxia Guo, Li Liu, Huan Wang, Wenquan Cui
Summary: In this study, the addition of ionic liquids (ILs) to the electrolyte solution was found to significantly enhance the photocatalytic performance of CO2 reduction to ethanol. The cations of [Emim]BF4 in ILs were enriched toward the cathode region under external bias, facilitating the capture of CO2. Additionally, a strong interaction was observed between [Emim]BF4 and the Cu2O/TiO2 catalyst surface, enhancing the separation efficiency and migration rate of photogenerated charges. This favorable environment created by ILs contributed to the rapid conversion of CO2 into intermediates CO2- and *CO, ultimately promoting the selectivity of C-C coupling to C2H5OH.
MOLECULAR CATALYSIS
(2023)
Review
Chemistry, Multidisciplinary
Junlan Guo, Yinghua Liang, Huan Wang, Li Liu, Wenquan Cui
Summary: In photocatalytic hydrogen production, cocatalysts play vital roles in enhancing light absorption, promoting charge separation, increasing active sites, and improving the ability of H adsorption. Optimizing the size, position, configuration, and quantity effect of cocatalysts is crucial for designing efficient and stable cocatalysts.
PROGRESS IN CHEMISTRY
(2021)
