Article
Chemistry, Multidisciplinary
Parham Haghighi, Amin Bazyari, Somayeh Alijani, Fatemeh Khademian, Levi Theodore Thompson
Summary: The surface of a mesoporous tungsten- and bismuth-promoted titania-silica nanocomposite was modified using a silylation method to enhance the adsorption capacity and photodegradation of organic dyes under visible light irradiation.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
P. Nivetha, B. Kavitha, M. Kalanithi
Summary: BaWO4-MoS2 nanocomposites synthesized by co-precipitation method exhibit excellent photocatalytic activity and antimicrobial properties, showing high efficiency in dye removal and potential environmental applications.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Physics, Multidisciplinary
Shiue-Yuan Shiau, Monique Combescot
Summary: This article discusses the formation and properties of Wannier excitons and Frenkel excitons in semiconductors. Wannier excitons are made from delocalized electrons and holes, while Frenkel excitons are made from highly localized excitations. The article also presents a new approach to studying Frenkel excitons and highlights the importance of understanding the spin and spatial degeneracies of excitonic states.
Article
Engineering, Chemical
Sivakumar Vigneshwaran, Chang Min Park, Sankaran Meenakshi
Summary: A novel hybrid photocatalyst NCS@MX was synthesized using a two-step hydrothermal treatment, showing high catalytic activity in degrading RhB under visible light irradiation. The use of NCS@MX increased the separation efficiency of photoinduced e and h+ through optical response and recombination rate, leading to enhanced photocatalytic degradation of RhB.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Kuilin Lv, Detian Wan, Dezhi Zheng, Yushan Qin, Yuguang Lv
Summary: In this study, different amounts of polypyrrole modified BiVO4 photocatalyst were synthesized, and the optimal doping amount of 5% showed the highest photocatalytic activity. The mechanism of enhanced activity was discussed, with photogenerated holes transferring to the pi orbital of PPy and electrons transferring to the conduction band of BiVO4 for effective charge separation and stabilization.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Environmental Sciences
Mysoon M. Al-Ansari, Latifah Al-Humaid, Majdoleen Aldawsari, Nora Dahmash Al-Dahmash, T. Selvankumar, R. Mythili
Summary: This work presents the production of a highly efficient visible light-driven Ag2Ox loaded ZnFe2O4 nanocomposite photocatalyst using a wet impregnation technique. The nanocomposites showed better photocatalytic activity for the degradation of rhodamine B and Reactive Red 120 dyes compared to bare ZnFe2O4 nanoparticles. The 3 wt% Ag2Ox loaded ZnFe2O4 nanocomposites exhibited a 99% removal efficiency for the dyes and demonstrated consistent performance without decreasing activity throughout 3 consecutive cycles.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Lei Li, Yan Du, Houxiang Sun, Huabing Zhang, Zicong Zhong
Summary: This paper reports the successful preparation of efficient CdZnS/SnS2/SnO2 heterojunction by sequential template approach and hydrothermal method. The heterostructure greatly enhances the photocatalytic degradation ability of Rhodamine B (RhB). The CdZnS/SnS2/SnO2 exhibits good stability and reusability, and its superior removal activity is mainly attributed to the formation of heterojunction improved light harvesting and enhanced separation efficiency.
Article
Materials Science, Multidisciplinary
Somayeh Alikarami, Ali Soltanizade, Fereshteh Rashchi
Summary: Semiconductor photocatalyst is a simple, efficient, low-cost, and green solution for dealing with the environmental crisis. In this study, CdS-Ag2S heterostructure photocatalyst was synthesized by ion exchange technique, which showed enhanced light absorption, narrower band gap, and more efficient charge transfer and separation. The CdS-Ag2S heterostructure exhibited high photocatalytic activity and stability, suggesting its potential in environmental remediation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Qiang Li, Lijie Wang, Jupu Song, Linshen Zhang, Chunfeng Shao, Hong Li, Hemin Zhang
Summary: A novel S-scheme heterojunction of In2S3/Bi2WO6 hybrid catalyst was synthesized by assembling In2S3 nanoparticles on Bi2WO6 microsphere through a simple precipitation route. The resulting materials were characterized for their morphology, structures, composition, chemical and optical properties. The In2S3/Bi2WO6 composites exhibited superior photocatalytic behavior for dyes decomposition and showed good stability and reusability. The improved photoactivity was attributed to the formation of S scheme heterojunction, which facilitated photocarriers disassociation and maintained strong redox power. The decomposition pathway of Rhodamine B was revealed and the S-scheme charge transfer mechanism was elucidated.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
I. Betsy Elizabeth, Elaiyappillai Elanthamilan, Sea-Fue Wang, I. Sharmila Lydia
Summary: A multifunctional Zn3V2O8/polyaniline composite was successfully synthesized and characterized. The composite exhibited remarkable photocatalytic activity and supercapacitive behavior.
Article
Chemistry, Multidisciplinary
Himadri Priya Gogoi, Anurag Dehingia, Anmol Singh, Pranjit Barman
Summary: In this study, heterostructured BiOCl-LaOCl composites were synthesized using KCl as a source of chlorine and varying contents of LaOCl as raw materials in the presence of ethylene glycol at a temperature of 100 degrees C by using the solvothermal method. The prepared composites were characterized and showed excellent photocatalytic activity for degrading Rhodamine B dye under sunlight irradiation. The BiOCl-LaOCl-1 composite exhibited the highest catalytic activity among all the synthesized materials, with a reaction rate four and six times higher than those of BiOCl-LaOCl-2 and BiOCl, respectively. The scavenger test results indicated that superoxide and hole radicals were mainly responsible for the photodegradation, and the high BET surface area of the composite also contributed to its enhanced photocatalytic activity.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Engineering, Environmental
Yage Zheng, Haojie Qi, Liang Zhang, Yujuan Zhang, Lvling Zhong, Xiaomin Zhang, Yao Feng, Juanqin Xue
Summary: A PVA aerogel/TiO2/MoS2/Au catalyst prepared by hydrothermal method was used for the degradation of Rhodamine B. The composite showed a uniform and well-structured porous network structure, high specific surface area, and large pore diameter. It had a high absorption rate in the visible light range and effectively inhibited the recombination of photogenerated electron-hole pairs due to the formation of a heterojunction. The composite material exhibited excellent photocatalytic performance, achieving a degradation rate of 86% in two hours. The PVA-supported photocatalysts were easily recoverable and maintained high catalytic activity even after 5 recycles.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Swaminathan Arumugam, Thirugnanam Bavani, Manickam Selvaraj, Badria M. Al-Shehri, Mani Preeyanghaa, Sieon Jung, Jayaraman Theerthagiri, Bernaurdshaw Neppolian, Sepperumal Murugesan, Jagannathan Madhavan, Myong Yong Choi
Summary: A novel FeMoO4/g-C3N4-2D/2D Z-scheme heterojunction photocatalyst was synthesized, showing 2D-iron molybdate (FeMoO4) nanoplates combined with 2D-graphitic carbon nitride (g-C3N4) nanosheets. The optimum FeMoO4/g-C3N4 composite (1:3 ratio of g-C3N4 and FeMoO4) exhibited enhanced degradation performance with a rate constant value of 0.02226 min-1 and good stability even after three cycles. It is proposed that the FeMoO4/g-C3N4 Z-scheme heterojunction effectively enhances the transfer and separation ability of e -/h+ pairs, leading to increased photocatalytic efficiency for the degradation of Rhodamine B.
Article
Environmental Sciences
S. P. Keerthana, R. Yuvakkumar, P. Senthil Kumar, G. Ravi, S. Hong, Dhayalan Velauthapillai
Summary: In this study, polyethylene glycol-assisted antimony tungstate nanorod photocatalysts were prepared via a hydrothermal route. The properties of the catalysts were investigated, and it was found that the 10 ml PEG-assisted sample exhibited a narrow bandgap and nanorod growth without agglomeration. Fourier transform infrared spectroscopy and Raman spectroscopy confirmed the composition and vibrational modes of the samples. Furthermore, the prepared 10 ml PEG-Sb2WO6 photocatalyst showed high efficiency and stability in degrading toxic pollutants in wastewater, making it a promising candidate for water treatment applications.
Article
Environmental Sciences
Dhanaprabhu Pattappan, Stella Vargheese, K. Kavya, R. T. Rajendra Kumar, Yuvaraj Haldorai
Summary: Metal-organic frameworks (MOFs) have shown potential as effective visible light photocatalysts for degrading dyes. Among nickel, iron, and titanium-based MOFs, Fe-MOF exhibited the highest dye degradation efficiency and stability under solar light irradiation, attributed to its ability to suppress photoinduced charge recombination. Furthermore, the photodegradation of dye using Fe-MOF followed first-order kinetics and was mainly driven by superoxide anion radicals.
Article
Chemistry, Physical
Wei Li, Xiao Wang, Qiong Ma, Fei Wang, Xiao-shan Chu, Xue-chuan Wang, Chuan-yi Wang
Summary: This study successfully enhanced the hydrogen evolution activity under solar light by constructing a CdS@h-BN/rGO catalyst, which exhibited excellent photoresponse and interfacial conductivity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Wei Li, Xiao-shan Chu, Fei Wang, Yan-yan Dang, Xiao-yun Liu, Xue-chuan Wang, Chuan-yi Wang
Summary: The construction of a 3D porous g-C3N4/GO skeleton aided by graphene oxide, with the immobilization of precious-metal cocatalysts, significantly enhances the photocatalytic hydrogen production under simulated solar light. The improved anchoring stability of cocatalysts and increased active sites due to electron acceptors contribute to the enhanced performance of the resulting 3D p-CNG-M composite catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Wei Li, Fei Wang, Xiao-shan Chu, Xiao-yun Liu, Yan-yan Dang
Summary: In this study, a 3D porous carbon-doped h-BN/rGO hybrid was successfully prepared with an enhanced hydrogen evolution reaction (HER) performance. The improved photoresponsivity and electrochemical property, as well as excellent durability in pH=8.5, were achieved through the synergistic effect of h-BN/rGO heterointerface and carbon-doping strategy.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Wei Li, Fei Wang, Xiao-shan Chu, Yan-yan Dang, Xiao-yun Liu, Tenghao Ma, Jia-yuan Li, Chuan-yi Wang
Summary: Solar-induced water splitting is a promising method for hydrogen production, and MoS2 is an important material for synthesizing efficient photocatalysts. By embedding MoS2 nanostructures on a 3D porous BN/rGO skeleton, the BNG-M composite showed enhanced HER rate and durability, with abundant active sites and fast interfacial charge mobility. The catalyst also displayed high photoresponsivity and outperformed many reported MoS2 and BN based catalysts.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Wei Li, Xiao-shan Chu, Fei Wang, Yan-yan Dang, Xiao-yun Liu, Teng-hao Ma, Jia-yuan Li, Chuan-yi Wang
Summary: This study presents a CdS-Pd nanocatalyst with improved stability and activity for solar-induced overall water splitting. The CdS-Pd nanocatalyst showed 110-fold higher activity than pristine CdS. It also demonstrated high apparent quantum yields under broadband light illumination. The findings provide important insights for the development of stable and efficient CdS-based photocatalysts for hydrogen production.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xiao-Li Hao, Xiao-Shan Chu, Ke-Ling Luo, Wei Li
Summary: Under light induction, a CdS nanocatalyst decorated with Au single-atom sites was used to efficiently catalyze the ATRA reaction under mild conditions, exhibiting higher yields and selectivity compared to existing reaction systems.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Wei Li, Teng-Hao Ma, Yan-Yan Dang, Xiao-Yun Liu, Jia-Yuan Li, Chuan-Yi Wang
Summary: In this study, a stable transition metal sulfide (TMS)-based photocatalyst with high photoactivity for hydrogen production was achieved by growing ultrafine MoS2 as a co-catalyst on the surface of Sb2S3 nanorods to form a type-II heterostructured catalyst. The obtained heterostructured catalyst exhibited significantly improved broadband-light harvesting and had 34.9-fold and 11.7-fold higher hydrogen evolution reaction photoactivity compared to bare Sb2S3 and MoS2, respectively, under simulated sunlight irradiation. The coordination interactions at the heterointerface provided highly enhanced photostability.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Physical
Wei Li, Fei Wang, Xiao-yun Liu, Yan-yan Dang, Jia-yuan Li, Teng-hao Ma, Chuan-yi Wang
Summary: By introducing N heteroatoms into the lattice of hexagonal CdS nanoparticles, N-doped CdS nanocatalysts were prepared. The synergetic promotion of heteroatom-semiconductor coordination (HSC) interaction effectively improved the utilization of photoexcited carriers, resulting in high apparent quantum yield. Under simulated sunlight irradiation, the nanocatalyst exhibited high hydrogen evolution rate with excellent photostability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Xiao-li Hao, Xiao-shan Chu, Xiao-yun Liu, Wei Li
Summary: Solar driven water-to-hydrogen conversion is a promising technology. Researchers achieved high photocatalytic HER activity by decorating single-atomic Pt on the surface of CdS nanoparticles, which promoted the migration of photo-carriers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Wei Li, Yan-yan Dang, Xiao-li Hao, Fei Wang, Xiao-yun Liu, Chen-hui Zhao
Summary: This study improves the performance and stability of cadmium sulfide photocatalyst by doping glucose as a carbon heteroatom precursor, achieving higher efficiency of light-to-hydrogen conversion.
Article
Chemistry, Multidisciplinary
Wei Li, Jiayuan Li, Tenghao Ma, Guocheng Liao, Fanfan Gao, Wen Duan, Keling Luo, Chuanyi Wang
Summary: The formation of a uniform mesoporous CdS shell on the surface of Sb2S3 nanorods (NRs) via a surface cationic displacement strategy constructs the core-shell Sb2S3@CdS heterojunction with high BET surface area and excellent near-infrared light harvesting capacity. The Sb-S-Cd bonding interaction and van der Waals force significantly enhance the stability and synergy of Sb2S3/CdS heterointerface throughout the entire surface of Sb2S3 NRs, promoting the Sb2S3-to-CdS electron transfer due to the formation of built-in electric field. Therefore, the optimized Sb2S3@CdS catalyst achieves highly enhanced simulated sunlight-driven Cr(VI) reduction and decomplexation of complexed Cr(III), resulting in effective chromium-containing wastewater treatment.
Article
Energy & Fuels
Wei Li, Yanyan Dang, Tenghao Ma, Jiayuan Li, Guocheng Liao, Fanfan Gao, Wen Duan, Xuechuan Wang, Chuanyi Wang
Summary: A photoreduction method was used to immobilize Ni single atoms on CdS nanoparticles, forming an electric metal-semiconductor interaction (EMSI) that greatly promoted H2O-to-H-2 conversion under simulated sunlight. The nanocatalyst with 1.25‰ Ni loading achieved the highest conversion rate and photostability, along with improved light absorption capacity and photexciton utilization efficiency. Under alkaline conditions, OH- ions reacted with photogenerated holes to inhibit oxidation and enhance conversion performance. This study provides insights for improving photocatalyst performance through non-noble metallic single-atom cocatalysis.
Article
Engineering, Environmental
Wei Li, Yanyan Dang, Jiayuan Li, Tenghao Ma, Guocheng Liao, Fanfan Gao, Wen Duan, Ji Li, Xuechuan Wang, Chuanyi Wang
Summary: This study explores the influence of the morphological characteristics of hexagonal cadmium sulfide nanoparticles and nanorods on the photocatalytic performance of hydrogen production. It is found that the size difference between the nanoparticles and nanorods leads to different nanoconfinement effects, affecting the separation and migration kinetics of photoexcitons and thus the catalytic performance. By synthesizing CdS nanoparticles and nanorods and decorating them with single-atomic titanium, two forms of nano-confined systems are constructed. The results show that CdS nanoparticles, under the three-dimensional nanoconfinement dynamics, have a significant inhibitory effect on the migration of photoexcitons, resulting in higher photocatalytic hydrogen production under simulated sunlight conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Chen-Hui Zhao, Ke-Ling Luo, Wei Li
Summary: In this study, a MoS2/CoP heterostructure was synthesized as a photocatalyst, which demonstrated a Z-scheme electron transfer mechanism that effectively suppressed photoinduced carrier recombination and achieved enhanced hydrogen evolution activity under simulated solar light.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Zhen-yu Zhu, Jia-yuan Li, Wei Li, Xiao-yun Liu, Yan-yan Dang, Teng-hao Ma, Chuan-yi Wang
Summary: Photocatalysis technology is a promising strategy for Cr(vi) pollution in wastewater. However, the instability of traditional transition metal sulfides (TMSs) under light-irradiation limits their photoactivity. In this study, a novel heterostructured catalyst was developed by uniformly anchoring CdS nanoparticles on the surface of Sb2S3 nanorods. The optimized catalyst exhibited significantly enhanced photoactivity for Cr(vi) reduction, surpassing bare Sb2S3 by approximately 138 times.
ENVIRONMENTAL SCIENCE-NANO
(2022)