Degradation Of RhB Research Articles

Non-metallic nitrogen-doped graphene quantum dots coupled with g-C3N4 achieve efficient photocatalytic performance

Photocatalysis has been prominently featured as a promising technology for solving environmental problems and energy crises. The incorporation of supported non-metallic cocatalysts is paramount in significantly augmenting the efficiency and performance of semiconductor photocatalysis. N-GQD/CN was successfully prepared and showed excellent performance in terms of light-absorbing capacity, carrier separation efficiency and visible-light driving. The findings underscore the exceptional photocatalytic prowess of the 0.02 wt.% N-GQD/CN composites, particularly in the degradation of RhB, HCl-TC, and BPA under visible light irradiation. The 0.02 wt.% N-GQD/CN composite could eliminate 91.2 % RhB in 90 min, remove 72.4 % of the HCl-TC in 180 min, and degrade 47.9 % of the BPA in 4 h. All of the activities of the 0.02 wt.% N-GQD/CN was superior to that of the monomer g-CN. This elevated photocatalytic performance can be predominantly attributed to the N-GQDs acting as co-catalysts. These N-GQDs possess substantial specific surface areas, effectively enhancing light absorption and facilitating synergistic interactions with g-CN nanosheets. Exploring the utility of N-GQD/CN using ionic interference and pH photocatalysis experiments. The present work provides a rational strategy for designing 0D/2D photocatalysts with improved visible light activity for environmental applications.

Synergetic effects of in-plane and interlayer dual regulation on sandworm-like graphitic carbon nitride for high-efficiency photocatalytic performance

Carbon nitride with tailored atomic structure has recently attracted considerable attention, however, the fast carrier recombination and incomplete visible light absorption great limited the practical application. Here, novel intramolecular synergetic effects of in-plane and interlayer dual regulation on sandworm-like graphitic carbon nitride (CN-NiC) was constructed for promoting the photocatalytic performance. Benefiting from the visible light band tail resulted from the extended π-conjugated system from carbon bridged doping, CN-NiC possesses expanded visible absorption range, and reduces the bandgap. More importantly, the Ni intercalation acts as an electron transport channel between the interlayer to reinforce the transfer of charge carriers. With this unique molecular structure, the optimized CN-NiC2 photocatalyst exhibits a high photocatalytic performance with 23.9 and 11.1-fold improvement as much as that of CN for H2 evolution and RhB degradation, respectively. In addition, the photocatalytic performance remains stable after several times cycles. This research provides an idea to obtain atomic structure tailored CN-based photocatalyst for high efficiency photocatalytic application.

Unraveling the effect of Cu doping on the structural and morphological properties and photocatalytic activity of ZrO2

Pristine ZrO2 and doped with different concentrations of Copper (0–7 %) were synthesized using a sol-gel combustion route. Several advanced techniques like XRD, EDX, TEM, XPS, P.L., and UV–vis spectrophotometer have characterized the compositions. The XRD proved that all peaks matched with a tetragonal phase of ZrO2 without any impurities of other phases. An average crystallite size rises from 20 to 55 nm by increasing the concentrations of Copper. The elemental analysis was examined by EDX and confirmed the presence of Cooper, Zirconium, and Oxygen. The red shift was observed due to a decrease in the bandgap (5.5–4.01 eV) with increasing the Cu concentrations. From the analysis of photocatalysis of pure ZrO2 and different concentrations of Cu-doped ZrO2 for M.B., RHB, and mix of them. The increase in doping of Cu led to enhancing the performance of the removing MB from 35 to 80 %, however, the RHB degradation was from 42 to 81 % while the mix of M.B. and RHB reached 85 % with 7 % Cu-doping ZrO2.

Dual-functional, highly efficient CaIn2S4/PDA@SnO2 photocatalyst with Z-Scheme for photocatalytic hydrogen production from water splitting and organic pollutant degradation

Heterojunction can be used to develop semiconductor catalysts with high photocatalytic activity. In this work, a Z-Scheme CaIn2S4(CIS)/PDA@SnO2 photocatalyst was successfully synthesized. Firstly, SnO2 hollow nanospheres were prepared by hydrothermal method. On this basis, SnO2 hollow nanospheres wrapped by polydopamine (PDA) were obtained via self-polymerization of dopamine. Finally, the CIS/PDA@SnO2 composites were synthesized via a one-step oil bath method. The heterojunction has successfully achieved effective separation of electron-hole pairs. PDA acted as a photosensitizer and an electron transfer medium in the heterojunction. Multiple characterization techniques such as XRD, SEM, TEM, BET, XPS, PL, UV–vis DRS, EPR and photoelectrochemical measurements were used for material structure and performance analysis. The photocatalytic performance of the photocatalysts was tested by photocatalytic hydrogen production from water splitting and RhB solution degradation. A flower-like close contact between CaIn2S4 and PDA@SnO2 interfaces can be obviously observed via SEM and TEM images. The band gap energies (Eg) of CaIn2S4 and PDA@SnO2 are 2.06 eV and 3.74 eV. CaIn2S4/PDA@SnO2-1(CPS-1) exhibits stronger light absorption together with lower transfer resistance compared to other samples. CPS-1 showed excellent photocatalytic hydrogen production and RhB degradation performance. Furthermore, the results of active species capture experiments, Mott-Schottky curve, XPS measurement and other tests show that it is logical to use the Z-Scheme charge mobility process to explain the better photocatalytic activity of the CIS/PDA@SnO2 composite. This work will present an efficient option for the fabrication of Z-Scheme heterojunctions and possibly further develop a new avenue for the control of the structure of semiconductor photocatalysts.

Photocatalytic Efficacy and Degradation Kinetics of Chitosan-Loaded Ce-TiO2 Nanocomposite towards for Rhodamine B Dye

The recent advancement in the production of nanomaterials with novel architectures and functionality has allowed for the effective treatment of industrial wastewaters and contaminated soil and, in that view, the current study aimed to investigate the catalytic efficacy of biopolymer-loaded titanium nanocomposite. Therefore, Cerium (Ce)-titanium dioxide (TiO2) loaded chitosan nanocomposite was formed and studied its catalytic efficacy towards the degradation of an industrial dye pollutant. For the production of Ce-TiO2/chitosan nanocomposite, we followed the hydrothermal synthesis route and the formed nanocomposite was thoroughly analyzed for the crystallinity (using powdered X-ray diffraction, XRD), surface bonding, and nature (using Fourier transform infrared, FTIR spectroscopy), morphology (scanning electron microscopy, SEM), elemental composition (electron diffraction analysis by X-rays, EDAX), porosity (Brunauer–Emmett–Teller, BET), and particles size in powdered form (transmission electron microscopy, TEM). Then the efficiency of synthesized nanocomposite was tested towards the photocatalytic degradation of Rhodamine B (Rh B) dye by applying various parameters such as the irradiation time, solution pH, catalyst dosage, and the dye concentration. Further, the Langmuir–Hinshelwood model was employed to investigate the kinetics of RhB degradation and provided a conceivable photocatalytic mechanism. It was indicated based on the catalyst mechanism that the modification of TiO2 nanoparticles with Ce and loading onto chitosan biopolymer may have accelerated the photocurrent transport due to an increase in the number of electrons and holes generated by the photon’s irradiation. In this way, the study has witnessed the excellent photocatalytic performance of Ce-TiO2/chitosan with 95% Rh B degradation as against the pure TiO2 nanoparticles thus stressing the importance of developing novel composite photocatalysts.

Synthesis of novel ZnIn0.2Ga1.8O4/CaIn2S4 composite material with S-scheme heterojunction for efficient photocatalytic degradation of organic pollutants and hydrogen evolution

Semiconductor photocatalysts that can both photocatalytic evolve hydrogen from water and degrade organic pollutants are very important to solve the problem of energy shortage and environmental pollution. The S-scheme ZnIn0.2Ga1.8O4/CaIn2S4 complex was successfully synthesized using sol–gel and oil bath methods. Characterization technique indicates that chrysanthemum-shaped CaIn2S4 is anchored on the surface of irregular nanoparticles ZnIn0.2Ga1.8O4, forming a closely packed heterostructure. The bandgap values of CaIn2S4 and Zn(In0.1Ga0.9)2O4 were determined as 2.11 eV and 3.61 eV, respectively. Under visible-light irradiation, the ZnIn0.2Ga1.8O4/CaIn2S4-1(ZC-1) photocatalyst exhibited superior performance in degrading an organic pollutant (RhB) and generating hydrogen compared to ZnGa2O4, ZnIn0.2Ga1.8O4, and CaIn2S4 alone. The photocatalytic degradation of RhB using ZC-1 was 1.7, 1.31, and 1.14 times higher than that of ZnGa2O4, ZnIn0.2Ga1.8O4, and CaIn2S4, respectively. Moreover, the photocatalytic hydrogen evolution rate of ZC-1 was 5.8, 3.7, and 13 times higher than that of ZnGa2O4, ZnIn0.2Ga1.8O4, and CaIn2S4, respectively. The formation of S-type heterojunctions in the composite photocatalysts was confirmed through free radical trapping and electron paramagnetic resonance tests, further enhancing hydrogen production and organic pollutant degradation. This study presents a novel approach for developing ZnGa2O4-based composite photocatalysts with S-scheme heterojunctions to address energy shortage and environmental pollution in the future.

One-pot synthesis of an Au modified BiOCOOH plasmonic photocatalyst with enhanced photocatalytic activity

In this work, we designed the plasmonic photocatalyst of Au–BiOCOOH through a one-pot method, which can be used to effectively treat wastewater contaminated with rhodamine (RhB) and tetracycline (TC). Compared with neat BiOCOOH, as expected, the resulting Au–BiOCOOH illustrated significantly boosted photocatalytic efficiency for degrading RhB and TC under visible light illumination. Remarkably, 3.0%Au–Bi showed the most optimal performance against RhB and TC, achieving degradation rates of 99.5 % and 99.7 % within 120 min. Through multiple characterization techniques, the physical and chemical photoelectric properties of the photocatalyst as well as the photocatalysis mechanism were discussed in detail. UV–visible diffuse reflectance spectroscopy (DRS) analysis demonstrates that the loading of Au nanoparticles (Au NPs) onto 2D nanosheets of BiOCOOH significantly expanded the wavelength range of response of BiOCOOH to visible light. Separately, the outcomes of electrochemical impedance spectroscopy (EIS) and photoluminescence (PL) manifestly reveal that the presence of Au NPs on BiOCOOH can efficiently reduce the interfacial charge transfer resistance and accelerate the photogenerated charge transfer. The free radical trapping test provided evidence for the essential role played by holes (h+) and superoxide radicals (·O2−) were involved in the degradation of RhB. The study provided a possibility to improve the photocatalytic efficiency of BiOCOOH.

Nitrogen-doped Zn/Fe@PCN derived from metal-organic frameworks activating persulfate to efficiently degrade rhodamine B.

The Zn/Fe@N-doped porous graphitic carbon catalyst (Zn/Fe@PCN) was successfully produced through one-step pyrolysis of g-C3N4 and Zn/Fe-MOF and was used for the activation of persulfate (PS) for the degradation of RhB. The Zn/Fe@PCN/PS system was able to degrade 95.92% of RhB in 30min at a rate of 0.6453min-1 when RhB was concentrated at 50mg L-1. The efficient degradation of RhB is primarily realized through the synergistic activation of PS by Zn, Fe, and N to produce reactive oxygen species 1O2, [Formula: see text], [Formula: see text], and ·OH. Zn0/Fe0 in Zn/Fe@PCN forms a galvanic cell with carbon to release electrons to join in the activation of PS. The doping of Zn not only provides sufficient electrons for the activation of PS but also promotes the effective reduction of Fe2+ and thus the Fe2+/Fe3+ cycle. The N doping accelerates the electron transfer during the reaction progress.

Enhanced visible-light activation of persulfate for the removal of RhB by supported nano-(C,N,B)-tridoped TiO2/copper foam mixed-crystals.

Photocatalytic persulfate activation by TiO2 and its application in sewage treatment have aroused great interest because of its high decontamination ability and strong adaptability, but the low light energy utilization rate and poor recycling of TiO2 limited its practical application. Herein, by using C-, N-, and B-modified TiO2 and immobilizing it on copper foam, we prepared a new and efficient (C,N,B)-TiO2/copper foam photocatalyst with enhanced visible-light activation performance of persulfate for the removal of RhB. It almost completely degraded RhB within 15min of UV-vis light photocatalysis-assisted persulfate oxidation reaction with TOC removal of 53.17% in 30min and presented the excellent long-term recyclability and stability, which is much better or comparative than those photocatalysts in the related literatures. (C,N,B)-TiO2/copper foam exhibited the largest apparent rate constant (0.149min-1), 1.16 times higher than (C,N,B)-TiO2 (0.128min-1), and 2.40 times higher than that of TiO2 (0.062min-1), respectively. C,N,B doping modified the crystalline phase of TiO2, narrowed its band gap, and reduced charge-carrier recombination rate. These, together with the synergistic effect between photocatalysis and persulfate activation for enhancing generation of active species, jointly promoted the performance enhancement of TiO2. The 1O2 was the primary oxidation active species for the degradation of RhB, and the radical species (SO4•-, •O2-, and •OH) could further accelerate the photocatalytic activation of persulfate reaction.

Structural tuning of bismuth molybdate composite photocatalyst for pollutants removal

In this study, a one-step hydrothermal method was employed to tune the structural characteristics and properties of Bi2MoO6-based composite. The manipulation of the phase composition and crystallite dimensions of Bi2MoO6 was achieved by varying the dosage of sodium molybdate, as evidenced by the XRD analyses. Moreover, the amalgamation of modified Bi2MoO6 nanoparticles with supporting materials such as kaolinite and attapulgite was observed to potentially impede the phase transition of Bi2MoO6. Emphasis was also placed on the influence of support quantity on the composite's structural attributes. Experimental results substantiated that the Bi2MoO6-based composite (BMOK-1.5/1) exhibited exceptional adsorption and photocatalytic performance in the degradation of TC and RhB under visible light exposure, particularly when three-fifths of the theoretical quantity of sodium molybdate was incorporated. The enhanced performance is attributed to the composite's large specific surface area, increased surface hydroxyl groups, and diminished recombination rate of photogenerated carriers. This study introduces a straightforward approach for regulating the structural aspects of bismuth-based photocatalysts.

Preparation of Cu2O/ g-C3N4-modified TiO2 composite catalysts by a two-step method: degradation of RhB in sunlight

Preparation of Cu2O/ g-C3N4-modified TiO2 composite catalysts by a two-step method: degradation of RhB in sunlight

Integrating Bi-containing metal–organic frameworks for enhancing their LED visible-light-driven photocatalytic activities towards Rhodamine dye

Tuning metal–organic framework (MOF) properties to enhance their catalytic activities has recently gained considerable attention. In this work, Bi(III) MOFs, including UU-200, CAU-17, and their integrated architecture, namely MIX-UCAU, were effectively prepared and characterized by various techniques, including FE-SEM, XRD, XPS, FT-IR, Raman, TGA, and EIS analyses. Results revealed that the UU-200 and CAU-17 frameworks were effectively integrated into a heterojunction MOF using a mixture of DMF and MeOH. The MIX-UCAU exhibited increased crystallinity, higher oxygen defect concentration and improved light absorption. The combined UU-200-CAU-17 framework also showed enhanced photo-generated electron-hole pairs separation and immigration performance compared to single MOFs. The photodegradation experiments of Rhodamine B dye (RhB) in an aqueous solution showed that the MIX-UCAU had a high photodegradation efficiency of ca. ∼ 99 % within 90 min under energy-saving visible LED light irradiation, surpassing the bare UU-200 (∼81 %) and CAU-17 (∼89 %). In addition, the catalyst showed good photostability under successive cyclic experiments. The LC/MS and radical quenching tests revealed the degradation of RhB, including several steps, including the N-dealkylation, decarboxylation, deamination, and ring cleavages to tiny fragmentation products, and these procedures were predominantly controlled by the active species of O2•– and h+. The study provides a facile and efficient strategy for developing photocatalysts for treating organic pollutants in wastewater.

Visible light driven S-scheme GQDs/BiOBr heterojunction with enhanced photocatalytic degradation of Rhodamine B and mechanism insight

A crucial and desirable objective in the wastewater treatment field is to design photocatalysts that can efficiently remove emerging pollutants while also being environmental-friendly. This work proposed a novel graphene quantum dots/BiOBr (GQDs/BiOBr) heterojunction with strong interfacial interactions through a hydrothermal method. Consequently, in just 140 min, RhB was almost entirely photodegraded by the GQDs/BiOBr and a rate constant 3.26 times higher than pristine BiOBr. The enhanced photocatalytic activity of GQDs/BiOBr was primarily associated with strengthened visible light absorption and improved charge transfer efficiency, as demonstrated through both experimental characterizations and density functional theory (DFT) calculation. Furthermore, with only a minor alteration in the surface chemical structure, GQDs/BiOBr retained strong photocatalytic ability after five cycles (RhB degradation of 85.17 %). The construction mechanism of S-scheme heterojunction, photogenerated carriers' transfer and photocatalytic mechanism were deduced by DFT calculation. The results derived from the radical trapping experiments as well as electron spin resonance (ESR) indicated that the presence of h+ and ·O2− were crucial for the degradation process of RhB. Finally, possible degradation intermediates had been identified and pathways of RhB were proposed, and the results of the toxicity assessment showed that ecotoxicity could be reduced or even eliminated. This effective and reliable visible-light-driven photocatalyst may be applied to build a photocatalytic degradation system for the environmentally friendly and energy-efficient removal of organic pollutants.

Fe2+-driven Mo(IV)/Mo(VI) redox-catalyzed PMS degradation of RhB

Molybdenum disulfide (MoS2) can activate peroxymonosulfate (PMS) to degrade organic pollutants, but due to the continuous consumption of Mo(IV) during the reaction and the slow conversion of Mo(VI) to Mo(IV), the severe shortage of Mo(IV) regeneration will cause a large loss of catalyst, thus increasing the operation cost. In this study, different transition metal ions were introduced directly into the reaction system. The effects of conditions such as light, initial pH, transition metal ion concentration and PMS dose on the degradation effect of rhodamine B were investigated. The coupling mechanism was proposed based on the free radical scavenging reaction. The experimental results showed that the different transition metals activated PMS in the order of Co2+> Fe2+> Cu2+> Mn2+> Zn2+> Ni2+. In the Fe2+/MoS2/PMS/light system, the Fe2+ concentration ranging from 0.05 mM to 0.2 mM was proportional to the activation PMS efficiency. Free radical burst experiments suggested that ·OH and SO4−· were the main reactive radicals that effectively promoted the degradation of pollutants. Humic acid had an inhibitory effect on the removal of RhB from the MoS2/Fe2+/PMS/light system. Fe2+ completed its own redox cycle (Fe3+/Fe2+) while continuously catalyzing the conversion of Mo species (Mo(VI)/Mo(IV)) in 5 cycles.

Zn2SnO4/SnO2/g-C3N4 heterojunction: High efficiency photocatalytic degradation of Rhodamine B in simulated visible light

Photocatalysis is an effective solution to wastewater treatment problems, and semiconductor heterojunctions for photocatalysis can effectively separate photogenerated carriers to improve the performance of photocatalytic degradation of pollutants. In this paper, a ternary composite photocatalyst with a heterojunction structure (Zn2SnO4/SnO2/g-C3N4) was prepared to photodegradeRhodamine B in simulated visible light. The experimental findings demonstrate that the Zn2SnO4/SnO2/g-C3N4 photodegradation rates and efficiencies for RhB are much higher than those for SnO2, g-C3N4, SnO2/g-C3N4, and Zn2SnO4/SnO2. We obtained a 3:1 mass ratio of Zn2SnO4/SnO2 to g-C3N4 by optimization, with a maximum degradation rate of 99.5 % and a maximum kinetic constant k of 0.692 min-1·g−1 for the photocatalytic removal of RhB by Zn2SnO4/SnO2/g-C3N4. The radical trapping experiments suggest the primary role of ·O2– for the photocatalytic removal of RhB. The ternary composite photocatalyst Zn2SnO4/SnO2/g-C3N4 shows promise for potential applications in RhB degradation owing to its exceptionally.

Preparation of 1 T-WS2 under different conditions and its enhancement of Fe(III)/Fe (II) cycle, synergistic catalysis of PMS activation and degradation of organic pollutants

In the Fenton-like system, the activation of sulfate-based AOPs (advanced oxidation processes) is inhibited by the slow conversion of Fe(III) to Fe(II). WS2 and other transition metal sulfides has good reducibility and can promote the conversion of Fe(III) to Fe(II), thus having excellent co-catalytic effect. However, the degradation effects of WS2 in different crystal phases are also different. In this paper, WS2 with different 1 T phase content was prepared under different conditions. The co-catalytic performance of WS2 in the WS2/Fe3+/PMS (peroxymonosulfate) system was further studied. When WCl6/TAA = 1: 12 and the temperature was 200 °C, WS2 had the best co-catalytic effect. 1 T phase WS2 was verified by XRD, Raman and TEM. XPS showed that the content of 1 T phase was the highest in W-200. The WS2/Fe3+/PMS system could efficiently degrade 20 mg/L phenol solution within 20 min. Free radical capture experiments and ESR showed that·SO4-,·OH,·O2- were the main active radicals. The excellent reusability of the 1 T-WS2 was proved by recycling experiments and the generation of sulfur vacancies. The system can be widely applied to the degradation of RhB, OFX and other pollutants. The degradation of different pollutants by WS2 in different oxidation systems was studied.

Synthesis of a reusable magnetic photocatalyst based on BiOCl / MnxZn1-xFe2O4 composites and its application on RhB degradation

Water pollution is becoming an increasingly serious issue, which threatens human survival. However, existing technology for addressing this issue has not developed adequately, and the recovery of polluted water remains difficult. Therefore, it is critical to develop innovative wastewater treatment technology, which is highly effective, uses little energy, and produces no secondary pollution. In this study, a Z-type heterojunction BiOCl/MnxZn1-xFe2O4 magnetic composite photocatalyst was created by the hydrothermal method. Using RhB as the target dye, the photocatalytic performances of the composite samples were assessed. The structure of composite samples was studied by SEM, X-ray diffraction, and UV–vis diffuse reflectance spectroscopy.The findings demonstrate that the heterojunction created by the addition of MnxZn1-xFe2O4 and BiOCl lowers the rate at which photogenerated electrons and holes recombine. Meanwhile, the prepared BiOCl/MnxZn1-xFe2O4 magnetic composite photocatalyst exhibited a notable catalytic degradation effect on RhB. Among them, the degradation rate of BiMn-5 was as high as 94.6%, showing better photocatalytic performance than other composite samples with different mass ratios. In addition, the product can be recycled. After five repeated tests, the average degradation rate remained as high as 88.7%. Therefore, the BiOCl/MnxZn1-xFe2O4 magnetic composite photocatalyst developed herein can be a new technology for efficient and environmentally friendly sewage treatment in line with contemporary needs.

Type II Heterojunction Formed by 3D Flower-like Microspheres of BiOBr/NH2–Fe-MOF with High Photocatalytic Degradation of RhB via Visible Light

Type II Heterojunction Formed by 3D Flower-like Microspheres of BiOBr/NH₂–Fe-MOF with High Photocatalytic Degradation of RhB via Visible Light

Performance study of BiVO4/BiOCl, a catalytic material for water cleaning with full spectral response in landscape design

BiVO4/BiOCl photocatalytic materials were prepared by photodeposition using BiVO4 with the exposed active crystalline planes as substrates. Driven by Vis-NIR BiVO4/BiOCl removes 73.29 %/61.12 % of tetracycline, and its degradation of RhB, MB, MO, phenol, CIP, BHA, BPA, and coumarin reaches 55.86 %–90.45 % (Vis)/40.97 %–82.09 % (NIR), respectively. In addition, it has good degradation ability for antibiotics in landscape water environment. The existence of disparities in energy levels gives rise to the distinct crystal surface capping ions, thereby inducing the generation of oxygen vacancies (OVs) within the system. Driven by the inherent electric field, the localized surface plasmon resonance (LSPR) effect, which is facilitated by OVs, enhances the broad-spectrum degradation across the entire response spectrum of the heterojunction. This research leverages the creation of OVs and the establishment of heterojunctions to present a novel concept for the development and investigation of the full-spectrum-driven purification materials for landscape water ecosystems.

Hydrothermal synthesis of porous CdS/Bi2S3/BiOIO3 nanocomposites for solar-driven photocatalytic degradation of rhodamine B

A heterojunction structure incorporating three photocatalysts, corresponding to a ternary composite CdS/Bi2S3/BiOIO3, was proposed to address the issues of poor stability, low efficiency in utilizing visible light, and poor performance in degrading refractory organic pollutants for conventional photocatalysts. Therefore, the interconnected CdS/Bi2S3/BiOIO3 structure facilitated the transfer of electrons from Bi2S3 to BiOIO3 by reducing the band gap, as well as the transfer of h+ from BiOIO3 to Bi2S3. As a result, slow carrier recombination and a decreasing band gap were found, resulting in the good performance of RhB degradation. As a medium, CdS could improve the e- and h+ transmission efficiency between Bi2S3 and BiOIO3. According to performance measurements, after excluding the influence of adsorption, the photocatalytic activity of CdS/Bi2S3/BiOIO3 reached 94.22 % after 30 min and remained stable after five cycles. A quenching experiment illustrating the importance of superoxide and hydroxyl radicals in RhB degradation, which might be applied to other refractory organic contaminants. DRS studies demonstrated that the composite combines the benefits of CdS and Bi2S3, with better light absorption across a broader wavelength range. According to the photocatalytic mechanism, the formation of a compact, three-component heterostructure at the interface increases light absorption while decreasing electron-hole recombination. The results of corresponding novels may yield valuable insights for the development of an effective approach in the design of a high-performance photocatalysis system for the degradation of pollutants.