Efficient Donor Research Articles

O‐Bridged Co‐Cu Dual‐Atom Catalyst Synergistically Triggers Interfacial Proton‐Coupled Electron Transfer: A New Approach to Sustainable Decontamination

AbstractHeteroatom‐bridged dual‐atom catalysts (DACs), featuring more flexible active sites and intermetallic interaction, provide an opportunity for sustainable environmental remediation. Herein, an innovative oxygen‐bridged Co‐Cu DAC supported on nano‐alumina (CoOCu‐DAC) is fabricated using a straightforward two‐step process. The as‐prepared catalyst significantly enhances both decontamination kinetics and peroxymonosulfate (PMS) utilization efficiency by 1–3 orders of magnitude toward monoethanolamine (MEA, pKa = 9.5) compared to Co single‐atom catalyst (Co‐SAC) and bulk metal catalysts, and largely outperforms previously reported systems. In‐situ ATR‐FTIR and theoretical investigations reveal that the secondary introduction of Cu plays multiple important roles: it activates lattice oxygen to trigger key proton transfer (PT) of MEAH+ via nucleophilic attack at the interface and subsequently favors deprotonated MEA as an efficient electron donor to accelerate electron transfer (ET) by enhancing orbital overlaps for the co‐activation of O2 and PMS. Such a stepwise proton‐coupled electron transfer (PCET)‐enhanced catalytic pathway mediated by CoOCu‐DAC is fundamentally different from common route identified in Co‐SAC‐involved Fenton‐like system. The established binary QSAR further substantiates the universality of PCET‐enhanced strategy toward versatile nitrogen‐containing organic compounds. This study offers a new perspective for sustainable water decontamination and other related areas of catalysis based on rationalized design of multifunctional catalysts at atomic level.

More than Oxidants: Persulfates as Efficient Sulfonate Donors in O -Sulfation

More than Oxidants: Persulfates as Efficient Sulfonate Donors in <i>O</i> -Sulfation

(1R)-2,3,4,6-Tetra-O-benzyl-1-C-allyl-1-deoxy-1-C-(2-thiazolyl)-D-galactopyranose

We have previously reported that thiazolylketol acetates, synthesized by the addition of 2-lithiothiazole to sugar lactones followed by acetylation, are efficient glycosyl donors affording O-, N-, P-, and C-glycosides. After the first example of C-glycosidation recently described by us, we report here on the unexpected outcome of the reaction of a thiazolylketol acetate with allyltrimethylsilane in the presence of trimethylsilyl triflate. The obtained intermediate, an intramolecular N-thiazolium salt, could be stereoselectively converted into the desired allyl C-thiazolylketoside.

Synthesis and photovoltaic properties of the efficient polymer donor based on benzo[1,2-b:4,5-b’]difuran unit

Synthesis and photovoltaic properties of the efficient polymer donor based on benzo[1,2-b:4,5-b’]difuran unit

A qualitative study exploring barriers and facilitators in deceased organ donation process among transplant coordinators in India

Although India’s organ donation rate is less than 1 per million population, significant disparities exist between the regions and centres within the country, leading to varying consent rates among different organ donation centres. Therefore, this study aimed to understand the experience of transplant coordinators and their barriers and facilitators in the deceased organ donation process across various organ donation centres in India. A phenomenological study using interviews was conducted among fourteen transplant coordinators purposefully recruited from public and private organ donation centres in India, with experience between six years and more than a decade. Audio recordings were transcribed and analysed using framework analysis. Five themes were identified namely: (1) supportive management policies, (2) infrastructure for the deceased organ donation process, (3) delays in the processing time, (4) active involvement in the identification process, and (5) explaining the concept of brain death. The study identifies that implementation priorities include strengthening teamwork, streamlining processes, optimising infrastructure for sensitive discussions, efficient donor identification, and empathetic handling of donor families’ grief stages. Collaborating with law enforcement, applying successful medico-legal strategies, improving family communication, and clarifying brain death concepts ethically and legally can boost consent rates, fostering informed decisions and possibly achieving self-sufficiency in deceased organ donation.

Development of Glycosylation Protocols Using Glycosyl N-Phenylethynyl Pyrrole-2-carboxylates as Donors.

We herein introduce glycosyl N-phenylethynyl pyrrole-2-carboxylates (PEPCs) as novel and highly efficient glycosyl donors. The unique inclusion of the pyrrole group, serving as both an electron-donating group and an ortho-tethering scaffold, imparts exceptional shelf stability while retaining reactivity for glycosylation reactions. PEPC donors exhibit broad utility for both O- and N-glycosylation across a variety of substrates. Additionally, their versatility and efficiency were further demonstrated in a one-pot saccharide synthesis, showcasing their potential for diverse synthetic applications.

Prevalence and screening of hemoglobinopathies and glucose-6-phosphate dehydrogenase deficiency in Yemeni blood donors

ABSTRACT Hemoglobinopathies and Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency pose significant health threats in Yemen, which can be alleviated through robust preventive strategies, highlighting the importance of implementing a cost-effective and efficient blood donor screening method to facilitate early diagnosis and management of erythrocyte disorders, ultimately improving both donor safety and patient health outcomes. Objectives This study aimed to determine the prevalence of total blood cell abnormalities, hemoglobinopathies and G6PD deficiency and evaluate the efficacy of red blood cell (RBC) indices, mentzer index (MI) and naked-eye single tube red cell osmotic fragility (NESTROF) test as screening tools for diagnosis of β thalassemia trait among Yemeni blood donors. Methods A cross-sectional study was conducted with 106 volunteer blood donors who met the national standard criterion of blood donation. Various tests were performed, including complete blood count (CBC), serum ferritin, sickling test, G6PD assay, NESTROF test and high-performance liquid chromatography (HPLC). Results The prevalence of hematological abnormalities among blood donors reached 68.9%, with functional RBC abnormalities at 51.9%, leukopenia at 10.4%, thrombocytosis at 1.9%, and thrombocytopenia at 4.7%. Additionally, hemoglobinopathies were found in 21.7% of donors, with β-thalassemia trait at 3.8%, sickle cell trait at 1.9%, and suspected α-thalassemia trait at 16%, while G6PD deficiency and iron deficiency were present in 12.3% and 17.9% of donors, respectively. The NESTROF test, MCV and MCH demonstrated a sensitivity rate of 100%. MI and MCH exhibited the highest specificity followed by NESTROF test in the screening of β-thalassemia trait. Conclusions The prevalence of hemoglobinopathies and G6PD deficiency appear to be common among Yemeni blood donors. These results emphasize the necessity of comprehensive blood donation screening programs to safeguard the blood supply and promote early detection and management of hemoglobinopathies and G6PD deficiency in Yemen.

Advancing Two-Photon Photodynamic Therapy Over NIR-II Excitable Conjugated Microporous Polymer with NIR-I Emission.

The availability of second near-infrared (NIR-II) excitable two-photon photosensitizers with NIR-I emission for efficient photodynamic therapy (PDT) is limited by challenges in molecular design. In this study, a NIR-II light-excitable two-photon conjugated microporous polymer (Tph-Dbd) with emission in the NIR-I region is developed. The large conjugated system and delocalized electronic structures endow Tph-Dbd with a large two-photon absorption cross-section under NIR-II light excitation. Moreover, the efficient electron acceptor and donor units within the π-conjugated backbones result in NIR-I emission for high signal-to-background ratio imaging, as well as separated highest occupied molecular orbitaland lowest unoccupied molecular orbital distributions for excellent singlet oxygen generation ability. The excellent NIR-II excitable two-photon absorption activity, NIR-I emission, good biocompatibility, and high photostability allow Tph-Dbd to be used for efficient in vitro fluorescence imaging guided PDT. Moreover, the impressive photothermal effect of Tph-Dbd can overcome the limitations of PDT in the treatment of hypoxic tumors. This study highlights a strategy for designing NIR-II excitable two-photon photosensitizers for advanced PDT.

Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications

AbstractOrganic solar cells (OSCs) have emerged as promising candidates for renewable energy harvesting due to their lightweight, flexible, and low‐cost fabrication potential. The efficiency of OSCs is largely determined by the choice of solvents, which significantly affect the film morphology of the active layers, the intermixed donor‐acceptor domains, and overall device performance. Beginning with an introduction to the importance of solvent selection, the screening and classification of solvents, emphasizing their characteristics and classification based on sustainability, solubility, and other additional considerations are explored. Various non‐halogenated solvents, highlighting commonly used aromatic solvents, biomass‐derived solvents, and water/alcohol‐based solvents are explored. The state‐of‐the‐art donor and acceptor materials, focusing on efficient donor materials such as PM6 and D18, and high‐performing Y‐series acceptors are also presented. Strategies for developing high‐performance OSCs processed using non‐halogenated solvents are examined, including solvent engineering with additive and additive‐free approaches, ternary strategies, and layer‐by‐layer techniques. The fabrication of large‐area devices using non‐halogenated solvents is addressed, focusing on blade‐coating, slot‐coating, and other processing techniques. Finally, this review outlines future research directions in the non‐halogenated solvent processing of OSCs, emphasizing the need for continuous innovation to overcome existing limitations and propel OSC technology toward commercial viability.

Giant dimeric donors for all-giant-oligomer organic solar cells with efficiency over 16% and superior photostability

Increasing the molecular weight while maintaining mono-dispersity has been proved crucial in innovating high-performance photovoltaic materials in giant oligomeric acceptors. However, developing efficient giant oligomeric donors to replace the batch-varied polymers remains challenging due to a lack of design principles. Here, by designing two unique isomeric rhodanine-based linkers, we successfully regulate the assembly behaviors of giant dimeric donors (G-Dimer-Ds) and fabricate the first all-giant-oligomer OSCs pairing with giant dimeric acceptor DY. Multiple characterizations demonstrate the small homo-molecular interaction with strong thermal-driven assembly capability in G-Dimer-D2 simultaneously facilitates reducing energetic disorder, improving charge transport and obtaining stable morphology, resulting in a satisfactory efficiency of 15.70% and long-term photostability with an extrapolated T80 of ca.10,000 hours, and further enhancing thermal-driven assembly promotes efficiency of 16.05%. Our results provide construction approaches on efficient giant donors, and propose a promising type of OSC with completely definite structures, high efficiency and superior stability.

Chromium uptake and its impact on antioxidant level, photosynthetic machinery, and related gene expression in Brassica napus cultivars.

The development of heavy metals, particularly chromium (Cr)-tolerant crop cultivars, is hampered due to lack of understanding of the mechanisms behind Cr stress tolerance. In this study, two Brassica napus cultivars, ZS758 and ZD622, were compared for Cr stress resistance by using the chlorophyll a fluorescence technique and biochemical characteristics. In both cultivars, Cr stress dramatically decreased PSII and PSI efficiency, biomass accumulation, and antioxidant enzyme levels. Although, cultivar ZS758 showed reduction in oxidative stress by decreasing the production of reactive oxygen species (ROS) in terms of reduced H2O2 and MDA content and increased enzymatic activities of key antioxidants enzymes including SOD, APX, CAT, and POD activities that play a crucial role in the regulation of numerous transcriptional pathways involved in oxidative stress responses. Higher non-photochemical quenching (NPQ) and QY were found in tolerant ZS758 cultivar under Cr stress, indicating that tolerant cultivar had a greater capacity to preserve PSII activity under Cr stress by enhancing heat dissipation as a photo-protective component of NPQ. Lower PSI activity and electron transfer from PSII were confirmed by lower PSI efficiency and higher donor end limitation of PSI in both rapeseed cultivars. The Cr concentration was greater in the ZD622 as compared to ZS758, which affected the mineral nutrients profile and damaged the cellular ultrastructure and related gene expression levels. However, current study suggest that cultivar ZS758 is more resistant to Cr stress than ZD622 due to improved metabolism and structural integrity and Cr stress tolerance that is linked with the increased PSII activity, NPQ, and antioxidant potential; these physiological characteristics can be exploited to select cultivars for Cr stress tolerance.

Optimization of donor cell production for somatic cell nuclear transfer in the critically endangered Vietnamese Ỉ pig

We aimed to establish efficient donor cells to produce piglets by somatic cell nuclear transfer (SCNT) of the endangered Vietnamese Ỉ pig. In Experiment 1, we assessed the effects of cell passages on the in vitro development of SCNT embryos. Cells with five and six passages showed significantly cleaved and blastocyst formation rates (86.72 and 86.64; 35.68 and 35.51, respectively, P < 0.05). The highest average total cell number per blastocyst was observed in groups of cells with five and six passages (50.45 and 50.18, respectively). Experiment 2 was performed to assess the sex of donor cells on the subsequent development of SCNT embryos. There was no significant difference in the cleaved and blastocyst formation rates, and the average total cell between female and male groups (86.51 % vs 86.94 % and 35.31 % vs 35.08 %, 50.29 % vs 50.67 %, respectively, P > 0.05). Experiment 3 was performed to assess the effect of cell lines on the development of SCNT embryos. Our results showed no significant difference in the success rate of fibroblast nuclear transfer into recipient oocytes, the cleaved and blastocyst formation rates, and the average total cell number per blastocyst among the cell lines 6004, 9154, 9155, 9156 and 9157 (P > 0.05). Experiment 4 was performed to assess the ability of SCNT embryos to induce pregnancy and to develop term. SCNT embryos were produced from Ỉ fibroblast cells established based on the results of Experiments 1, 2 and 3. Transfer of blastocyst stage embryos into 19 recipients (100–120 embryos in each) resulted in 14 pregnancies, in which 8 pregnant females terminated on Day 22–42 and 6 others produced 20 cloned piglets from donor cells of a female pig but 5 piglets died before birth and 15 healthy cloned piglets. However, 3 out of 15 healthy piglets died of unknown causes within 24h of birth and 3 out of 15 healthy piglets died at 3–5 days of age due to diarrhoea, 9 out of 15 healthy piglets are now 3 months of age. Finally, we established a protocol for the donor cell production which enabled the production of the endangered Ỉ pig embryos by SCNT and maximized blastocyst production rate by more than 35 % and pregnant rate after the transfer of cloned Ỉ pig embryos to recipients at 73.68 % for the first time in Vietnam.

Synthesis and Density Functional Theory Study on the Functionalization of Carbon Nanotube Conjugates with Amino Compounds and Their Application in Dyeing Processes

AbstractThis study investigates the functionalization of graphene nanotube (GNTs) conjugates with an amino compound called 1‐amino‐2‐hydroxy‐4‐naphthalene sulfonic acid (AHNSA‐GNTs). The study also evaluates the potential application of these conjugates in dyeing processes. The goal is to modify GNTs to enhance their interaction with dyes, thus improving the efficiency of dyeing textiles and the colorfastness of the resulting products. Multiple characterization methods, such as X‐ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM) were used to get a better look at the composites. The findings of the study indicate that AHNSA‐GNTs composites improve dye retention on wool fibers, which leads to a reduction in the consumption of excess dye and water. Density Functional Theory (DFT) calculations were utilized to investigate the electronic properties and binding energies of the functionalized CNTs, providing insights into the molecular interactions between the CNTs and amino compounds. Overall, this study highlights the promising applications of graphene nanotubes in sustainable textile processes. Frontier molecular orbitals (FMOs) and global reactivity descriptors serve as key tools for understanding the stability and chemical reactivity of compounds. These tools were used to calculate FMOs and electronic parameters of compounds 1 and 2 at the B3LYP/6‐31G(d) level of theory. The study examined the highest occupied molecular orbital (HOMO)‐lowest unoccupied molecular orbital (LUMO) energy gap, which provides insights into molecular stability and reactivity. Various physical properties were derived from these calculations, including electron affinity (EA) and ionization potential (IP) to LUMO and HOMO energies. Compound 2 emerged as the most efficient electron donor, possessing the highest HOMO energy, while compound 1 excelled as the best electron acceptor with the highest LUMO energy.

Modulation of Electron Push-Pull by Redox Non-Innocent Additives for Long Cycle Life Zinc Anode.

Application of an aqueous Zn-ion battery is plagued by a water-induced hydrogen evolution reaction (HER), resulting in local pH variations and an unstable electrode-electrolyte interface (EEI) with uncontrolled Zn plating and side reactions. Here, 4-methyl pyridine N-oxide (PNO) is introduced as a redox non-innocent additive that comprises a hydrophilic bipolar N+-O- ion pair as a coordinating ligand for Zn and a hydrophobic ─CH3 group at the para position of the pyridine ring that reduces water activity at the EEI, thereby enhancing stability. The N+-O- moiety of PNO possesses the unique functionality of an efficient push electron donor and pull electron acceptor, thus maintaining the desired pH during charging/discharging. Intriguingly, replacing ─CH3 (electron pushing +I effect) by ─CF3 group (electron pulling ─I effect), however, does not improve the reversibility; instead, it degrades the cell performance. The electrolyte with 2m ZnSO4 + 15mm PNO enables symmetric cell Zn plating/stripping for a remarkable > 10 000h at 0.5mA cm-2 and exhibits coulombic efficiency (CE) ≈99.61% at 0.8mA cm-2 in Zn/Cu asymmetric cell. This work showcases the immense interplay of the electron push-pull of the additives on the cycling.

Enhanced photocatalytic CO2 conversion into reusable fuels with efficient solid-state proton donors

Lead halide perovskites driven photocatalytic CO2 reduction reaction (CO2RR) is restricted by H2O proton source due to the poor water-resistance of perovskites and difficult dissociation of H2O molecules. In this paper, a novel solid-state proton donor of amino acid modified melamine foam (Ami-MF) is developed, which could improve CO2RR of CsPbBr3/Bi2WO6 S-scheme heterojunction. On the one hand, amino acid molecules possess abundant –COOH and –NH2 groups, which are broken easily by catalyst oxidation compared with H2O, supplying sufficient protons for CO2RR. Product yield of Glu-MF/CsPbBr3/Bi2WO6 reaches 112.81 μmol/g/h, which is 3.8 times higher than that (29.83 μmol/g/h) of H2O-MF/CsPbBr3/Bi2WO6. Moreover, glutamic acid (Glu), cysteine (Cys), arginine (Arg) as typical acidic, neutral and basic amino acids are selected to explore proton supply from different amino acids. Glu-MF/CsPbBr3/Bi2WO6 exhibits the best CO2RR than other two Ami-MF, ascribing to the dicarboxylic structure of Glu. On the other hand, MF is an integral part in solid-state proton donor. Product yield of Glu-MF/CsPbBr3/Bi2WO6 is about 46.2 times higher than that (2.44 μmol/g/h) of powdery Glu/CsPbBr3/Bi2WO6, which ascribes to the efficient gas–solid CO2RR system induced by the three-dimensionality and porosity of MF. This study develops an efficient solid proton donor to enhance perovskites driven CO2RR.

Novel lignin α-O-4 derived hydrogen donors in CQ-based photoinitiating systems for dental resins

The purpose of this work is to explore the properties of the lignin-derived amine-free photoinitiating systems (PISs) during the curing process. Four novel hydrogen donors (HD1, HD2, HD3, and HD4) derived from lignin α-O-4 structural were designed and synthesized by simple methods, and their low C–H bond dissociation energies on methylene were determined by molecular orbitals theory. Four experimental groups using CQ (camphorquinone)/HD PIs formulated with Bis-GMA/TEGDMA (70 w%/30 w%) were compared to CQ/EDB (ethyl 4-dimethylamino benzoate) system. The photopolymerization profiles and double bond conversion rate was tracked by FTIR experiments; the color bleaching ability of the samples and color aging test assay were performed using color indexes measurements; The cytotoxicity of the samples was also compared to EDB related systems. All of the experimental groups with new HDs were compared to the control group with EDB by statistical analysis. Compared to CQ/EDB system, new lignin-derived hydrogen donors combined with CQ showed comparable or even better performances in polymerization initiation to form resin samples, under a blue dental LED in air. Excellent color bleaching property was observed with the new HDs. Aging tests and cytotoxicity examination of the resin were performed, indicating the new lignin compounds to be efficient hydrogen donors for amine-free CQ-based photo-initiating system. Novel lignin α-O-4 derived hydrogen donors are promising for further usage in light-curing materials.

Effects of anther-stigma position on cross-pollination efficiency in a hermaphroditic plant.

Evolution of cross-pollination efficiency depends on the genetic variation of flower traits, the pollen vector, and flower trait matching between pollen donors and recipients. Trait matching has been almost unexplored among nonheterostylous species, and we examined whether the match of anther length in pollen donors and stigma length in pollen recipients influences the efficiency of cross-pollination. To explore potential constraints for evolutionary response, we also quantified genetic variation and covariation among sepal length, petal length and width, stamen length, style length, and herkogamy. We created 58 experimental arrays of Turnera velutina that varied in the extent of mismatch in the position of anthers and stigmas between single-flowered plants. Genetic variation and correlations among flower traits were estimated under greenhouse conditions. Style length, but not herkogamy, influenced the efficiency of cross-pollination. Plants with stamen length that matched the style length of other plants were more efficient pollen donors, whereas those with the style protruding above the stamens of other plants were more efficient pollen recipients. Significant broad-sense heritability (0.22 > hB 2 < 0.42) and moderate genetic correlations (0.33 > r < 0.85) among floral traits were detected. Our results demonstrated that anther-stigma mismatch between flowers contributed to variation in the efficiency of cross-pollination. The genetic correlations between stamen length and other floral traits suggests that any change in cross-pollination efficiency would be driven by changes in style rather than in stamen length.

A High-Performance Organic Photovoltaic System with Versatile Solution Processability.

Recently developed organic photovoltaic (OPV) materials have simultaneously closed the gaps in efficiency, stability, and cost for single-junction devices. Nonetheless, the developed OPV materials still pose big challenges in meeting the requirements for practical applications, especially regarding the prevalent issues of solution processability. Herein, a highly efficient polymer donor, named DP3, incorporating an electron-rich benzo[1,2-b:4,5-b']dithiophene unit as well as two similar and simple acceptor units is presented. Its primary objective is to enhance the interchain and/or intrachain interactions and ultimately fine-tune bulk-heterojunction microstructure. The DP3:L8-BO system demonstrates the highest power conversion efficiency (PCE) of 19.12%. This system also exhibits high-performance devices with over 18% efficiencies for five batches with various molecular weights (23.6-80.8KDa), six different blend thicknesses (95-308nm), differenced coating speeds (3.0-29.1mmin-1), with promising PCEs of 18.65% and 15.53% for toluene-processed small-area (0.029cm2) cells and large-area (15.40cm2) modules, thereby demonstrating versatile solution processability of the designed DP3:L8-BO system that is a strong candidate for commercial applications.

Enhanced pseudocapacitive properties of cobalt-doped manganese oxide electrode utilizing magnesium sulfate electrolyte for supercapacitors

This paper investigates the enhanced pseudocapacitive properties of cobalt-doped manganese oxide (Co-doped MnO2) electrode in magnesium sulfate (MgSO4) electrolyte for supercapacitor applications. Co-doped MnO2 was synthesized on nickel foam through a controlled hydrothermal process and specific heat treatment parameters. This resulted in the transformation into α-MnO2 with a 2 × 2 tunnel structure. Morphological investigation illustrates the presence of a hierarchical micro-flower structure with a substantial surface area and mesoporous distribution. The specific surface area of the Co-doped MnO2 electrode significantly increased to 158 m2 g−1, compared to the pristine (bare MnO2) electrode (80 m2 g−1). Electrochemical analyses revealed a specific capacitance of 527 F g−1 at 1 A g−1 in MgSO4 (1 M), showcasing a 1.6 times improvement over Na2SO4 (1 M). The unique structure of the Co-doped MnO2, combined with magnesium ions as efficient electron donors, contributes to superior charge-storage, making it a promising candidate for high-performance supercapacitors. Comprehensive characterizations, such as XRD, XPS, BET, SEM, GCD, and EIS, confirm the advantageous electrochemical performance and durability of the Co-doped MnO2 electrode in MgSO4 electrolyte.

Autotrophic denitrification by sulfur-based immobilized electron donor for enhanced nitrogen removal: Denitrification performance, microbial interspecific interaction and functional traits

Sulfur-driven autotrophic denitrification (SdAD) is a promising nitrogen removing process, but its applications were generally constrained by conventional electron donors (i.e., thiosulfate (Na2S2O3)) with high valence and limited bioavailability. Herein, an immobilized electron donor by loading elemental sulfur on the surface of polyurethane foam (PFSF) was developed, and its feasibility for SdAD was investigated. The denitrification efficiency of PFSF was 97.3%, higher than that of Na2S2O3 (91.1%). Functional microorganisms (i.e., Thiobacillus and Sulfurimonas) and their metabolic activities (i.e., nir and nor) were substantially enhanced by PFSF. PFSF resulted in the enrichment of sulfate-reducing bacteria, which can reduce sulfate (SO42−). It attenuated the inhibitory effect of SO42−, whereas the generated product (hydrogen sulfide) also served as an electron donor for SdAD. According to the economic evaluation, PFSF exhibited strong market potential. This study proposes an efficient and low-cost immobilized electron donor for SdAD and provides theoretical support to its practical applications.